A lunar soil concrete preparation vehicle based on material extrusion forming technology and its uses

Abstract

The present invention belongs to the field of space technology, and particularly relates to a lunar soil concrete preparation vehicle based on material extrusion molding technology and its uses. The lunar soil concrete preparation vehicle includes: a lunar soil collection system, a lunar soil transmission system, and a concrete preparation and packaging system; the lunar soil collection system is used to grab and collect lunar soil in place, and the lunar soil transmission system transmits the lunar soil collected by the lunar soil collection system to the concrete preparation and packaging system; the concrete preparation and packaging system includes: a central collection plate (18), an outer pressure-bearing box (19) installed on the central collection plate (18), a lateral push rod (17) arranged directly in front of the outer pressure-bearing box (19), a longitudinal push rod (5) arranged on the side of the outer pressure-bearing box (19), a lunar soil pressure box (4) that can move axially in the axial direction of the outer pressure-bearing box (19), and the lunar soil pressure box (4) is connected to a transmission mechanism to control its reciprocating axial movement. The preparation process of the lunar soil concrete preparation vehicle of the present invention is not affected by external conditions, and the preparation of lunar soil "concrete" can be completely completed only by mechanical extrusion. The device of the present invention has no precision instruments, has strong anti-loss performance, is durable, and is simple to repair. In addition, the device is simple to operate, has a small vehicle weight, and is easy to transfer and transport.

Description

Technical Field

[0001] The present invention belongs to the field of space technology, and particularly relates to a lunar soil concrete preparation vehicle based on material extrusion forming technology and its uses. Background Art

[0002] Nowadays, China's lunar exploration project is developing rapidly, and establishing a long-term living and scientific research base on the moon has gradually become an achievable plan. At present, many studies have been carried out on the technologies related to lunar base construction at home and abroad, and certain achievements have been made. However, due to the particularity of the lunar surface environment and the challenges in lunar soil concrete preparation technology, there are still many problems and technologies to be solved and broken through in this technology. For example, simplifying the lunar soil concrete preparation process and reducing the device investment to reduce the device weight.

[0003] Currently, most of the disclosed technologies use 3D printing technology and other methods to prepare lunar soil "concrete", but it has at least the following disadvantages: There are problems such as high vacuum, high temperature, low temperature, large temperature difference between high and low temperatures, and low gravity on the moon. And 3D printing must mix lunar soil and additives such as magnesium oxide, magnesium chloride, water, etc. to prepare a slurry. Under the above extreme conditions, there are problems with unstable slurry performance. Therefore, when 3D printing and extruding, it is easy to cause blockage or even scrapping of the print head due to the too fast curing speed of the slurry, the instability of the "concrete" printed by 3D printing, and a series of problems such as the bursting of pipelines due to continuous filling of a large amount of slurry. In addition, the launch cost of mixing and pulping in 3D printing technology is relatively large, and the energy consumption is also relatively large.

[0004] To solve the above problems, the present invention is proposed. Summary of the Invention

[0005] The present invention aims at the deficiencies in the existing lunar soil concrete preparation technology, and proposes an automated system based on material extrusion forming technology to replace technologies such as 3D printing to complete the preparation of lunar soil concrete, providing important technical support for the construction of China's lunar surface base.

[0006] The first aspect of the present invention provides a lunar soil concrete preparation vehicle based on material extrusion forming technology, and the lunar soil concrete preparation vehicle includes: a lunar soil collection system, a lunar soil transmission system, and a concrete preparation and packaging system;

[0007] The lunar soil collection system is used to grab and collect lunar soil in place, and the lunar soil transmission system transports the lunar soil collected by the lunar soil collection system to the concrete preparation and packaging system;

[0008] The concrete preparation and packaging system comprises: a central collecting plate 18, an outer pressure box 19 mounted on the central collecting plate 18, a transverse push rod 17 arranged in front of the outer pressure box 19, a longitudinal push rod 5 arranged in front of the outer pressure box 19, and a lunar soil pressure box 4 arranged in the axial direction of the outer pressure box 19 and capable of axial movement, wherein the lunar soil pressure box 4 is connected to a transmission mechanism to control its axial reciprocating movement;

[0009] The lower part of the lunar soil delivery pipe 16 is connected to the outer pressure box 19 , and the front end of the transverse push rod 17 is provided with a concrete bearing plate.

[0010] Preferably, the lunar soil collection system comprises: a mounting plate 11 mounted on the upper end of the lunar soil concrete preparation vehicle, at least one set of mechanical arms mounted on the mounting plate 11, and a lunar soil collection box 10 disposed on the mounting plate 11, wherein three mechanical grippers are disposed at the end of the mechanical arms as end effectors;

[0011] The lunar soil collecting box 10 has an opening on the top.

[0012] Preferably, the lunar soil delivery system comprises: a lunar soil delivery pipe 16 disposed below the lunar soil collection box 10, a pipe opening and closing mechanism, and a pipe opening and closing mechanism control device;

[0013] Among them, the lunar soil delivery pipe 16 is connected to the lunar soil collection box 10, and a pipeline opening and closing mechanism is arranged between the two. The pipeline opening and closing mechanism control device controls the opening and closing of the pipeline opening and closing mechanism.

[0014] Preferably, the pipeline opening and closing mechanism control device is a pressure sensor for measuring the lunar soil pressure in the lunar soil collection box 10, and controls the pipeline opening and closing mechanism to open when the measured pressure reaches a set value, and controls the pipeline opening and closing mechanism to close when the measured pressure does not reach the set value.

[0015] Preferably, the transmission mechanism includes: a ball screw 2, a reduction box 21 and a motor 20 in transmission connection, and the lunar soil pressure box 4 is installed on the ball screw 2.

[0016] Preferably, a concrete bearing sheet is provided at the front end of the longitudinal push rod 5 .

[0017] Preferably, the sensor is a pressure sensor for measuring the lunar soil pressure in the lunar soil collection box 10 .

[0018] Preferably, the robotic arms are in two groups, which are respectively arranged at the front end and the rear end of the mounting plate 11 , and the lunar soil collection box 10 is arranged in the middle of the mounting plate 11 .

[0019] Preferably, the diameter of the lunar soil delivery pipe 16 gradually narrows from the end near the mounting plate to the end far from the mounting plate.

[0020] Preferably, the lunar soil concrete preparation vehicle further includes: a lunar rover chassis 1, the lunar rover chassis 1 having a cavity and an upper opening, the cavity accommodating a lunar soil conveying system and a concrete preparation and dispensing system, and a mounting plate 11 being installed at the upper opening.

[0021] The second aspect of the present invention provides the use of the lunar soil concrete preparation vehicle based on the material extrusion molding technology described in the first aspect, which is used for collecting lunar soil and in-situ extruding and molding it into concrete.

[0022] In the 1970s, Academician Glukhovsky proposed the concept of contact hardening of unstable minerals. The present invention elaborates on the chemical principle of in-situ extruding and molding lunar soil into concrete as follows:

[0023] Lunar soil is formed due to rock weathering, meteorite impacts, etc., so lunar soil contains more glassy substances, has a high surface charge and good adhesion. The particle size of lunar soil is <75 μm (the content of 5 - 15 μm is 20%), and the grading is good.

[0024] The mineral composition of lunar soil includes: silicate and aluminosilicate minerals such as anorthite (CaO·Al2O3·2SiO2), olivine [(Mg,Fe)2SiO4], and pyroxene [(Ca,Mg,Fe)(Si,Al)2O6], and its chemical composition is: SiO2, Al2O3, CaO, Fe2O3, etc. These are all macroscopically dispersed powders of amorphous, metastable, and subcrystalline silicate, aluminate, and aluminosilicate substances, with high free energy and similar properties to metal powders. That is, during the pressing process of such materials, structural bonds are easily formed between particles, resulting in hardening and forming the lunar soil "concrete" described in the present invention.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The moon has problems such as difficult heat dissipation in a vacuum, small gravity, large day-night temperature difference (-160 - 180 °C), moonquakes, meteorite shower impacts, etc. Therefore, the equipment applied on the moon should have strong anti-interference ability. The preparation process of the lunar soil concrete preparation vehicle of the present invention is not affected by external conditions and can complete the preparation of lunar soil "concrete" on the moon entirely relying on mechanical extrusion. The device of the present invention has no precision instruments, has strong anti-loss performance, is strong and durable, and is simple to repair. In addition, the device is simple to operate, has a small vehicle weight, and is easy to transfer and transport. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is an exploded view of the structure of the lunar soil concrete preparation vehicle for Example 1.

[0028] Figure 2It is the upper part of the structural explosion diagram of the lunar soil concrete preparation vehicle in Embodiment 1.

[0029] Figure 3 It is the lower part of the structural explosion diagram of the lunar soil concrete preparation vehicle in Embodiment 1.

[0030] Figure 4 It is the overall appearance structure diagram of the lunar soil concrete preparation vehicle in Embodiment 1.

[0031] Figure 5 It is the top view of the mounting plate 11 of the lunar soil concrete preparation vehicle in Embodiment 1 and some parts mounted thereon.

[0032] Figure 6 It is the bottom view of the mounting plate 11 of the lunar soil concrete preparation vehicle in Embodiment 1 and some parts mounted thereon.

[0033] Figure 7 It is the structure diagram of the mounting plate 11 and the central collection plate 18 of the lunar soil concrete preparation vehicle in Embodiment 1 and some parts mounted between them.

[0034] Figure 8 It is the structure diagram of the central collection plate 18 of the lunar soil concrete preparation vehicle in Embodiment 1 and the parts arranged thereon. Among them, the first longitudinal push rod 5 and the second longitudinal push rod 6 are in the working state.

[0035] Figure 9 It is the structure diagram of the central collection plate 18 of the lunar soil concrete preparation vehicle in Embodiment 1 and the parts arranged thereon. Among them, the pushing state is that the transverse push rod 17 is in the working state.

[0036] 1. Lunar rover chassis, 2. Ball screw, 3. Ball screw bearing seat, 4. Lunar soil pressing box, 5. First longitudinal push rod, 6. Second longitudinal push rod, 7. First robotic arm rotation motor, 8. First robotic arm, 9. Second robotic arm, 10. Lunar soil collection box, 11. Mounting plate, 12. Motor, 13. Longitudinal bevel gear, 14. Transverse bevel gear, 15. Second robotic arm rotation motor, 16. Lunar soil conveying pipe, 17. Transverse push rod, 18. Central collection plate, 19. Lunar soil external pressure box, 20. Motor, 21. Reducer box, 22. Solar panel. Detailed implementation manners

[0037] Those skilled in the art will understand that the following embodiments are only used to illustrate the present invention and should not be construed as limiting the scope of the present invention. For those without specific techniques or conditions noted in the embodiments, the techniques or conditions described in the literature in this field or according to the product specifications shall be followed. For those materials or equipment without the noted manufacturer, they are all conventional products that can be obtained by purchase.

[0038] Those skilled in the art of the present technology can understand that, unless specifically stated otherwise, the singular forms "a", "an", "the" and "said" used herein may also include the plural forms. It should be further understood that the term "comprising" used in the specification of the present invention means the presence of the stated features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or their groups. It should be understood that when we say an element is "connected" to another element, it can be directly connected to other elements, or there may also be intermediate elements. In addition, the "connection" used herein may include wireless connection.

[0039] In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more. The orientation or positional relationship indicated by terms such as "inside", "above", "below", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly defined and limited, the terms "installed", "connected", "provided with" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] Those skilled in the art of the present technology can understand that, unless otherwise defined, all terms used herein, including technical terms and scientific terms, have the same meaning as the general understanding of those of ordinary skill in the technical field to which the present invention belongs. It should also be understood that terms such as those defined in a general dictionary should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted with an idealized or overly formal meaning unless defined as here.

[0042] Embodiment 1

[0043] A lunar soil concrete preparation vehicle based on material extrusion forming technology is driven electrically and mainly includes: a lunar soil collection system, a lunar soil transmission system, a concrete preparation and packaging system, a power supply system, and a control system, a total of 5 subsystems.

[0044] The power supply system is responsible for the collection and distribution of power. The collection of power is mainly achieved through the solar panel 22 installed outside the lunar rover.

[0045] The control system needs to coordinate and control the other four subsystems, monitor the status of each subsystem, and complete interlocking and integrated control. In addition, returning the status data of each system to the astronaut for remote operation of the lunar rover is also one of the main tasks of the control system.

[0046] The lunar soil collection system, the lunar soil transfer system, and the concrete preparation and packaging system are the core parts of the lunar preparation vehicle. Under the combined action of these three subsystems, a series of operations such as lunar soil collection, concrete preparation, and packaging can be achieved.

[0047] The control system also includes a communication antenna and a camera that are adapted to each other.

[0048] The specific structures of these three subsystems are as follows:

[0049] The lunar soil collection system includes: a mounting plate 11 installed at the upper end of the lunar soil and concrete preparation vehicle, two groups of robotic arms installed on the mounting plate 11, namely the first robotic arm 8 and the second robotic arm 9, and a lunar soil collection box 10 arranged on the mounting plate 11; among them, three robotic grippers are provided at the end of the robotic arm as end effectors, and the lunar soil collection box 10 has an opening at the top.

[0050] There are two groups of robotic arms, which are respectively arranged at the front end and the rear end of the mounting plate 11, and the lunar soil collection box 10 is arranged in the middle of the mounting plate 11.

[0051] The specific structure of the robotic arm can adopt a conventional design. For example, each robotic arm is configured with four drive motors, including the first robotic arm rotation motor 7 and the second robotic arm rotation motor 15. Under the combined drive of the four motors, the end of the robotic arm can better traverse the lunar surface area around the preparation vehicle. The end of the robotic arm is connected with three end effectors in the shape of robotic grippers and a small electric push rod. The electric push rod is used as an electric actuator, and its push rod can make a reciprocating motion within a certain stroke. The electric push rod is connected to the robotic gripper through a connecting rod, and the opening and closing degree of the gripper can be controlled by controlling the extension length of the push rod. The gripper closes in a conical shape, and this structural design can ensure that the lunar soil will not spill during the movement of the gripper.

[0052] The lunar soil transfer system includes: a lunar soil transfer pipe 16 arranged below the lunar soil collection box 10, and a pipe opening and closing mechanism; among them, the lunar soil transfer pipe 16 is communicated with the lunar soil collection box 10, and a sensor is arranged between the two, and the sensor controls the opening and closing of the pipe opening and closing mechanism.

[0053] Such as Figure 6As shown, the pipeline opening and closing mechanism can be a rotating opening and closing mechanism arranged at the bottom of the lunar soil collection box 10, specifically: a longitudinal bevel gear 14 and a transverse bevel gear 13 that mesh with each other, and the transverse bevel gear 13 is transmission-connected to a blade group. The opening and closing of the pipeline is achieved by controlling the opening and closing of the blade group, and the longitudinal bevel gear is connected to the motor 12.

[0054] When a certain mass of lunar soil is collected, the sensor sends a signal, the stepper motor rotates, and under the meshing transmission of the longitudinal bevel gear and the transverse bevel gear, the blade group at the bottom of the lunar soil collection box 10 opens, and the lunar soil falls into the lunar soil delivery pipe 16. Subsequently, the lunar soil enters the concrete preparation system through the lunar soil delivery pipe 16.

[0055] The concrete preparation and packaging system comprises: a central collecting plate 18 disposed below the mounting plate 11, an outer pressure box 19 mounted on the central collecting plate 18, a transverse push rod 17 disposed directly in front of the outer pressure box 19, a first longitudinal push rod 5 and a second longitudinal push rod 6 disposed in front of the outer pressure box 19, and a lunar soil pressure box 4 disposed in the axial direction of the outer pressure box 19 and capable of axial movement, wherein the lunar soil pressure box 4 is connected to a transmission mechanism to control its axial reciprocating motion;

[0056] The lower part of the lunar soil delivery pipe 16 is connected to the outer pressure box 19, and the front end of the transverse push rod 17 is provided with an L-shaped concrete bearing piece, wherein the first longitudinal push rod 5 and the second longitudinal push rod 6 are provided with a concrete bearing piece at the front end. Specifically, the transverse push rod 17 and the first longitudinal push rod 5 and the second longitudinal push rod 6 are all arranged on the central collecting plate 18, and the two push rods are arranged at right angles.

[0057] The transmission mechanism includes: a ball screw 2, a reduction box 21 and a motor 20 connected in transmission, and the lunar soil pressure box 4 is installed on the ball screw 2. The lunar soil pressure box 4 is a rectangular parallelepiped, and of course its shape can be changed according to the required concrete shape. The ball screw 2 is installed on the ball screw bearing seat 3.

[0058] The concrete shape is initially set to be a cuboid with a length of 10 to 50 cm and a width and height of 5 to 25 cm. The pressure required for the extrusion molding of lunar soil concrete is 20 MPa. Therefore, according to the formula F = Ps, the minimum thrust extrusion force that the preparation system needs to provide to complete the extrusion molding of concrete is calculated. Therefore, the ball screw pair with model FFZD4006 can meet the design requirements of this system.

[0059] The diameter of the lunar soil transport pipe 16 gradually narrows from the end near the mounting plate to the end far from the mounting plate to save space and facilitate the collection of lunar soil.

[0060] The lunar soil concrete preparation vehicle also includes: a lunar rover chassis 1, the lunar rover chassis 1 having a cavity and an upper opening, the cavity containing the lunar soil delivery system and the concrete preparation and sub-packaging system, and a mounting plate 11 installed at the upper opening. Wheels are installed under the lunar rover chassis 1. The lunar rover chassis 1 is provided with a power system and a control system to supply power to the above-mentioned mechanical arms, sensors, transmission mechanisms, etc. and realize intelligent control.

[0061] In addition, the present invention needs to ensure lubrication and sealing of moving parts, especially bearings, to prevent lunar soil particles from falling in, so as to increase the service life of the device.

[0062] The following is an example of the process from the start of the lunar soil concrete preparation vehicle to the completion of a lunar soil collection, to explain the working method of the lunar soil concrete preparation vehicle:

[0063] 1. The control system controls the driving motor of the robotic arm. When the end of the robotic arm reaches the lunar surface to the set height, it controls the robotic claw to grab the lunar soil;

[0064] 2. After the lunar soil is captured, the four drive motors work together again to control the end of the robotic arm to reach the top of the lunar soil collection box 10, and then control the electric push rod to open the gripper, placing the lunar soil in the lunar soil collection box 10, and then repeat the lunar soil collection work. In this process, the two robotic arms work in sequence;

[0065] 3. When a certain amount of lunar soil is collected, the motor 12 controls the blades at the bottom of the lunar soil collection box 10 to open, so that the lunar soil falls into the outer pressure box 19 so that the preparation system can process concrete. At this time, the front end of the transverse push rod 17 is provided with an L-shaped concrete bearing piece extending into the outer pressure box 19 to receive the lunar soil. Figure 8 shown.

[0066] 4. The control system controls the motor 20 to rotate. After the power transmission and torque amplification of the reduction box 21, the lunar soil pressure box 4 above the ball screw pair 2 will move laterally, thereby entering the outer pressure box 19 to extrude the collected lunar soil to obtain concrete blocks.

[0067] 5. When the concrete preparation system completes one lunar soil processing, it will return to the initial position to wait for the collection of lunar soil for the next processing. At this time, the three electric push rods complete the packaging of the processed concrete. Specifically, the transverse push rod 17 retracts axially and drives the concrete block to move out of the outer pressure box 19 to the corresponding position of the longitudinal push rod 5. Then the first longitudinal push rod 5 and the second longitudinal push rod 6 are started, and the concrete bearing sheet at the front end pushes the concrete block to separate from the central collection plate 18 and enter the cavity of the lunar rover chassis 1. Figure 9As shown. Then the horizontal push rod 17, the vertical push rod 5, and the lunar soil pressure box 4 are reset to wait for the next processing and packaging work.

Claims

1. A lunar soil concrete preparation vehicle based on material extrusion forming technology, characterized in that, The lunar soil concrete preparation vehicle includes: a lunar soil collection system, a lunar soil transmission system, and a concrete preparation and packaging system; The lunar soil collection system is used to grab and collect lunar soil in situ, and the lunar soil delivery system delivers the lunar soil collected by the lunar soil collection system to the concrete preparation and packaging system; The concrete preparation and packaging system comprises: a central collecting plate (18), an external pressure box (19) mounted on the central collecting plate (18), a transverse push rod (17) arranged in front of the external pressure box (19), a first longitudinal push rod (5) and a second longitudinal push rod (6) arranged on the side of the external pressure box (19), and a lunar soil pressure box (4) arranged in the axial direction of the external pressure box (19) and capable of axial movement; The lunar soil pressure box (4) is connected to a transmission mechanism to control its axial reciprocating motion, and the lunar soil pressure box (4) can generate lateral movement, thereby entering the outer pressure box (19) to extrude and shape the collected lunar soil into a concrete block; The lunar soil collection system comprises: a mounting plate (11) mounted on the upper end of the lunar soil concrete preparation vehicle, at least one set of mechanical arms mounted on the mounting plate (11), and a lunar soil collection box (10) arranged on the mounting plate (11), wherein the ends of the mechanical arms are provided with three mechanical grippers as end effectors; The lunar soil collecting box (10) has an upper opening; The front end of the transverse push rod (17) is provided with an L-shaped concrete bearing sheet for extending into the outer pressure box (19) to receive the lunar soil; The front ends of the first longitudinal push rod (5) and the second longitudinal push rod (6) are provided with concrete bearing plates for pushing the concrete blocks away from the central collecting plate (18); The transverse push rod (17) and the first longitudinal push rod (5) and the second longitudinal push rod (6) are all arranged on the central collecting plate (18), and the transverse push rod (17) and the first longitudinal push rod (5) are arranged at a right angle; The lunar soil conveying system comprises: a lunar soil conveying pipe (16) arranged below the lunar soil collecting box (10), a pipe opening and closing mechanism, and a pipe opening and closing mechanism control device; The lunar soil delivery pipe (16) is connected to the lunar soil collection box (10), a pipe opening and closing mechanism is provided between the two, and the pipe opening and closing mechanism control device controls the opening and closing of the pipe opening and closing mechanism; the lower part of the lunar soil delivery pipe (16) is connected to the outer pressure box (19).

2. The lunar soil concrete preparation vehicle based on the material extrusion forming technology according to claim 1, characterized in that, The pipeline opening and closing mechanism control device is a pressure sensor for measuring the lunar soil pressure in the lunar soil collection box (10).

3. The lunar soil concrete preparation vehicle based on the material extrusion forming technology according to claim 1, wherein The mechanical arms are divided into two groups, which are respectively arranged at the front end and the rear end of the mounting plate (11); and the lunar soil collection box (10) is arranged in the middle of the mounting plate (11).

4. The lunar soil concrete preparation vehicle based on the material extrusion forming technology according to claim 1, characterized in that, The diameter of the lunar soil transport pipe (16) gradually narrows from the end near the mounting plate to the end far from the mounting plate.

5. The lunar regolith concrete preparation vehicle based on the material extrusion forming technology according to claim 1, characterized in that, The lunar soil concrete preparation vehicle further comprises: a lunar rover chassis (1), the lunar rover chassis (1) having a cavity and an upper opening, the cavity accommodating a lunar soil delivery system and a concrete preparation and dispensing system, and a mounting plate (11) being mounted at the upper opening.

6. Use of the lunar soil concrete preparation vehicle based on the material extrusion forming technology according to claim 1, characterized in that, It is used to collect lunar soil and extrude it into concrete in situ.

7. The working method of the lunar soil concrete preparation vehicle based on the material extrusion forming technology according to claim 1, characterized in that, The following steps are involved: Lunar soil collection system, lunar soil transfer system, concrete preparation and packaging system; The lunar soil collection system is used to grab and collect lunar soil in-situ; The lunar soil transfer system transfers the lunar soil collected by the lunar soil collection system to the concrete preparation and packaging system; The concrete preparation and packaging system performs an extrusion molding operation on the lunar soil to obtain concrete blocks.

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