A double-layer screen inclined vibration in-situ lunar soil screening mechanism and transportation system
By designing a double-layer screen inclined vibration in-situ lunar soil screening mechanism, a secondary screening is performed using microgravity and eccentric vibration components. Lunar dust is adsorbed through micro-electrodes and alternating power supply, which solves the problems of mechanism runaway and blockage in the lunar soil screening process and improves screening accuracy and equipment stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HARBIN INST OF TECH
- Filing Date
- 2024-05-28
- Publication Date
- 2026-06-12
AI Technical Summary
Problems such as mechanical malfunction, jamming, and blockage exist during the lunar soil screening process, affecting screening accuracy and equipment stability.
A double-layer screen inclined vibration in-situ lunar soil screening mechanism is adopted, including an inclined screen and a horizontal screen assembly. It uses microgravity and eccentric vibration assembly for secondary screening, and uses micro-electrodes and alternating power supply to adsorb lunar dust, and sets up a dust suppression electric field to reduce dust.
It achieves efficient particle size screening of lunar soil, avoids mechanical jamming and clogging, improves the reliability of continuous operation and screening accuracy of the equipment, and reduces the impact of dust on the equipment.
Smart Images
Figure CN118513235B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of screening equipment technology, specifically to a double-layer screen inclined vibration in-situ lunar soil screening mechanism and a transport system. Background Technology
[0002] Lunar soil screening technology is a separation technology that uses screen vibration to separate the particle size of mixed lunar soil collected by a robot. The basic principle of lunar soil screening technology is to use screen vibration to screen lunar soil particles, and finally, to use variable frequency vibration of the screen to achieve the storage and transportation of lunar soil and the discharge of coarse soil. During the lunar soil screening process, various situations such as mechanical wear, blockage, and loss of control can occur, significantly affecting the stability of the technology and the accuracy of the lunar soil screening.
[0003] The main factors influencing the diffusion of lunar soil within the screening mechanism are the robot pouring the soil from above and the vibration of the screen. When the lunar soil enters the screening mechanism from above, its direction of movement remains unchanged along its initial falling direction. However, upon encountering the upper screen, its direction of movement changes. Therefore, the movement of the lunar soil inside the screening machine is quite complex, and with repeated impacts from the vibrating screen, the area affected by the lunar soil gradually increases. Summary of the Invention
[0004] Therefore, the technical problem to be solved by the present invention is to overcome the problems of mechanism loss of control, jamming, and blockage in the lunar soil screening process of the prior art, thereby providing a double-layer screen tilting vibration in-situ lunar soil screening mechanism and transportation system.
[0005] To address the aforementioned technical problems, this invention provides a double-layer screen inclined vibration in-situ lunar soil screening mechanism, comprising: a support frame with a cover on the support frame, the cover having a feed port and a discharge port, the discharge port being connected to a coarse soil receiving hopper; an inclined screen assembly and a horizontal screen assembly disposed within the support frame, the inclined screen being located above the horizontal screen; a fine soil receiving hopper disposed below the horizontal screen, a support member being provided between the fine soil receiving hopper and the support frame; and a base located at the bottom of the fine soil receiving hopper and slidably connected to the fine soil receiving hopper, the base having a drive structure disposed within it, the drive structure being connected to one end of an eccentric vibration assembly, and one end of the eccentric vibration assembly being connected to the support member.
[0006] Furthermore, the inclined screen assembly and the horizontal screen assembly include a screen, microelectrodes, and an alternating power supply, wherein the screen is connected to the alternating power supply via the microelectrodes.
[0007] Furthermore, the tilt angle of the tilting screen assembly is 30°-75°.
[0008] Furthermore, there are two eccentric vibration components, which are symmetrically arranged.
[0009] Furthermore, the eccentric vibration assembly includes a cam, a connecting tube, and a spring. The cam is connected to the drive structure, the spring is disposed inside the connecting tube, and the connecting tube is connected to the cam.
[0010] Furthermore, the drive structure includes two motors connected to the cam.
[0011] Furthermore, it also includes a sliding structure, which is disposed on the fine soil receiving hopper and the base.
[0012] Furthermore, the sliding mechanism includes a slide rail and a groove, the slide rail being disposed on the base and the groove being disposed at the bottom of the fine soil receiving hopper.
[0013] Furthermore, it also includes a connector, which is disposed on the support and the base, and is used to connect the support and the base.
[0014] The present invention also provides a lunar soil transportation system, including the double-layer screen inclined vibration in-situ lunar soil screening mechanism, and further including: an electrode plate disposed at the bottom of the coarse soil receiving hopper and the fine soil receiving hopper; an array electrode disposed at the outlet of the coarse soil receiving hopper and the fine soil receiving hopper, wherein the array electrode and the electrode plate form a dust suppression electric field.
[0015] The technical solution of this invention has the following advantages:
[0016] 1. The double-layer screen inclined vibration in-situ lunar soil screening mechanism provided by the present invention includes: a support frame, a cover on the support frame, a feed port and a discharge port on the cover, the discharge port being connected to a coarse soil receiving hopper; an inclined screen assembly and a horizontal screen assembly disposed within the support frame, the inclined screen being located above the horizontal screen; a fine soil receiving hopper disposed below the horizontal screen, a support member being provided between the fine soil receiving hopper and the support frame; a base located at the bottom of the fine soil receiving hopper and slidably connected to the fine soil receiving hopper, a driving structure disposed within the base, the driving structure being connected to one end of an eccentric vibration assembly, and one end of the eccentric vibration assembly being connected to the support member.
[0017] By installing a cover on the support frame, and providing a feed port and discharge port on the cover, the robot can transport lunar soil to the inclined screen assembly through the feed port. The first sieving occurs under gravity; large-diameter lunar soil particles roll and are isolated along the surface of the upper inclined screen assembly, entering the coarse soil receiving hopper for collection. Small-diameter lunar soil particles are sieved and fall onto the upper surface of the horizontal screen assembly for a second sieving under the excitation of the eccentric vibrating assembly. After sieving, they fall into the fine soil receiving hopper for collection. The lunar soil in the fine soil receiving hopper represents the lunar soil that meets the particle size screening standard. In other words, the inclined and horizontal screen assemblies can utilize microgravity and vibration to thoroughly screen the lunar soil particles. The lunar soil after multiple sievings is stored in the receiving hopper, where the robot dumps the coarse soil and transfers the fine soil.
[0018] This double-layer screen inclined vibration in-situ lunar soil screening mechanism has a relatively simple structure, avoiding jamming and loss of control, and increasing the reliability of continuous operation. Simultaneously, it can perform secondary screening of lunar soil, using the standards for physicochemical testing and analysis in the associated instruments and the preparation of lunar soil products as the basis for particle size screening. Through microgravity and vibration, the lunar soil is screened and stored to meet the particle size standards. Simultaneously, it can perform lunar soil homogenization treatment: the vibration of the double-layer screen by the cam vibration unit loosens the locally accumulated lunar soil on the screen surface, preventing clogging. The base is designed with internal sealing treatment for the drive structure, and some parts of the structure are isolated.
[0019] 2. The double-layer screen inclined vibration in-situ lunar soil screening mechanism provided by the present invention includes a screen, a micro-electrode, and an alternating power supply, wherein the screen is connected to the alternating power supply through the micro-electrode. This mechanism can adsorb lunar dust generated during the screening process, thereby reducing dust generation, ensuring normal equipment operation, improving equipment reliability, and preventing lunar dust from affecting components.
[0020] The summary section is provided to present the chosen concepts in a simplified form, which will be further described in the detailed description below. The summary section is not intended to identify essential or necessary features of this disclosure, nor is it intended to limit the scope of this disclosure. Attached Figure Description
[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0022] Figure 1 A schematic diagram of the structure of the double-layer screen inclined vibration in-situ lunar soil screening mechanism provided by the present invention;
[0023] Figure 2 A perspective view of the double-layer screen inclined vibration in-situ lunar soil screening mechanism provided by the present invention;
[0024] Figure 3 This is a schematic diagram of the inclined screen assembly of the double-layer screen inclined vibration in-situ lunar soil screening mechanism provided by the present invention.
[0025] Figure 4 This is a schematic diagram of the horizontal screen assembly of the double-layer screen inclined vibration in-situ lunar soil screening mechanism provided by the present invention.
[0026] Figure 5 A schematic diagram of the fine soil receiving hopper of the double-layer screen inclined vibration in-situ lunar soil screening mechanism provided by the present invention;
[0027] Figure 6 A schematic diagram of the back structure of the fine soil receiving hopper of the double-layer screen inclined vibration in-situ lunar soil screening mechanism provided by the present invention.
[0028] Figure 7 A schematic diagram of the base of the double-layer screen inclined vibration in-situ lunar soil screening mechanism provided by the present invention;
[0029] Figure 8 This is a schematic diagram of the eccentric vibration component of the double-layer screen tilting vibration in-situ lunar soil screening mechanism provided by the present invention.
[0030] Figure 9 A schematic diagram of the double-layer screen inclined vibration in-situ lunar soil screening mechanism provided by the present invention;
[0031] Figure 10 This is a schematic diagram of the inclined screen assembly of the double-layer screen inclined vibration in-situ lunar soil screening mechanism provided by the present invention.
[0032] Figure 11 A schematic diagram of the traveling wave transport principle provided by this invention;
[0033] Figure 12 This is an installation schematic diagram provided for the present invention;
[0034] Figure 13 A schematic diagram showing the effect of the dust-suppressing electric field before the material leaves the warehouse;
[0035] Figure 14 A schematic diagram illustrating the effect of the dust-suppressing electric field when the material exits the warehouse;
[0036] Figure 15 This is a schematic diagram illustrating the transfer of the dust-suppressing electric field.
[0037] Explanation of reference numerals in the attached figures:
[0038] 1. Support frame; 2. Cover; 3. Feed port; 4. Discharge port; 41. Coarse soil receiving hopper; 5. Inclined screen assembly; 6. Horizontal screen assembly; 7. Fine soil receiving hopper; 8. Support component; 9. Base; 10. Drive structure; 11. Screen; 12. Micro-electrode; 13. Alternating power supply; 14. Cam; 15. Connecting pipe; 16. Spring; 17. Slide rail; 18. Groove; 19. Connector; 20. Electrode plate; 21. Array electrode; 22. Outer shell; 23. Fixing block; 24. Eccentric vibration assembly. Detailed Implementation
[0039] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this disclosure. Therefore, the drawings and description are to be considered exemplary in nature and not restrictive.
[0040] In the description of this disclosure, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this disclosure, "a plurality of" means two or more, unless otherwise explicitly specified.
[0041] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joint" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or connections that allow for communication; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.
[0042] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0043] The following disclosure provides numerous different embodiments or examples for implementing various structures of this disclosure. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this disclosure. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this disclosure, but those skilled in the art will recognize the application of other processes and / or the use of other materials.
[0044] The preferred embodiments of this disclosure are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.
[0045] Currently, existing technologies face the following challenges:
[0046] Challenge 1: High requirements for lunar soil screening, making ground verification difficult.
[0047] In-situ resource utilization systems have high requirements for the particle size distribution of lunar soil samples, and conducting lunar soil sieving experiments on the ground will face many challenges, such as simulating low gravity, simulating the physical properties of lunar soil such as its structure and morphology, and simulating its electrical properties. There is no international experience in on-orbit practice of lunar soil sieving.
[0048] Challenge 2: Clogged screens are difficult to clean.
[0049] Due to the uncertainty of the structure and morphology of the lunar soil mechanism itself, and the possibility of material accumulation in the internal dead corners of the screening mechanism, lunar soil may clog the screen holes during the screening process. Reducing the probability of screen hole clogging and cleaning the screen have become some of the challenges.
[0050] Based on research and the characteristics of the task, the following aspects can be addressed to prevent clogging of the screening mechanism and screen: feeding (uniformity, direction, speed), screen structure improvement (distribution, shape, material), screen movement mode (vibration, shaking, reversal, rotation), and post-processing (mechanical cleaning, solution).
[0051] Challenge 3: Low reliability of continuous equipment operation
[0052] The purely mechanical drive structure and screening mechanism are prone to mechanical fatigue damage and impact damage during operation. At the same time, the movement of lunar soil will accelerate the wear of moving parts, thus increasing the likelihood of screening machine failure.
[0053] Please see Figures 1 to 15 As shown, the present invention provides a double-layer screen inclined vibration in-situ lunar soil screening mechanism, comprising: a support frame 1, a cover 2 on the support frame 1, a feed port 3 and a discharge port 4 on the cover 2, the discharge port 4 being connected to a coarse soil receiving hopper 41; an inclined screen assembly 5 and a horizontal screen assembly 6, disposed within the support frame 1, the inclined screen 11 being located above the horizontal screen 11; a fine soil receiving hopper 7, disposed below the horizontal screen 11, a support member 8 being provided between the fine soil receiving hopper 7 and the support frame 1; and a base 9, located at the bottom of the fine soil receiving hopper 7 and slidably connected to the fine soil receiving hopper 7, the base 9 having a drive structure 10, the drive structure 10 being connected to one end of an eccentric vibration assembly 24, and one end of the eccentric vibration assembly 24 being connected to the support member 8.
[0054] By setting a cover 2 on the support frame 1, and setting a feeding port 3 and a discharging port 4 on the cover 2, the robot can transport lunar soil to the inclined screen assembly 5 through the feeding port 3. The first sieving occurs under gravity; large-diameter lunar soil particles roll and are isolated along the surface of the upper inclined screen assembly 5, entering the coarse soil receiving hopper 41 for collection. Small-diameter lunar soil particles are sieved and fall onto the upper surface of the horizontal screen assembly 6 for a second sieving under the excitation of the eccentric vibration assembly 24. After sieving, they fall into the fine soil receiving hopper 7 for collection. The lunar soil in the fine soil receiving hopper 7 is the lunar soil that meets the particle size screening standard. In other words, the inclined screen assembly 5 and the horizontal screen assembly 6 can fully screen the particle size of the lunar soil using microgravity and vibration. The lunar soil after multiple sievings is stored in the receiving hopper, where the robot dumps the coarse soil and transfers the fine soil.
[0055] This double-layer screen inclined vibration in-situ lunar soil screening mechanism has a relatively simple structure, avoiding jamming and loss of control, and increasing the reliability of continuous operation. Simultaneously, it can perform secondary screening of lunar soil, using the standards for physicochemical testing and analysis in the associated instruments and the preparation of lunar soil products as the basis for particle size screening. Through microgravity and vibration, the lunar soil is screened and stored to meet the particle size standards. Simultaneously, it can perform lunar soil homogenization treatment: the vibration unit of cam 14 vibrates the double-layer screen 11, loosening locally accumulated lunar soil on the surface of screen 11 and preventing clogging. The base 9 is designed with internal sealing treatment for the drive structure 10, and a partially isolated layout is implemented.
[0056] Among them, the fine soil receiving hopper 7 is set between the support frame 1 and the support member 8. The support member 8 is slidably connected to the base 9 to ensure the reliability of the pulling process and effectively prevent the lunar soil from being worn.
[0057] The support frame 1 is a cylindrical structure with an internal lunar soil vibration circulation path and interfaces for various functional units. It provides a sealed environment for the lunar soil screening process, isolating lunar soil particles from affecting the functional units. The support frame 1 can effectively share the vibration caused by the cam 14 vibration structure, reducing the interference of vibration on other measuring devices.
[0058] The base 9 can be fixed to the fixing block 23 with screws to prevent vibration from causing the screening mechanism to move.
[0059] Meanwhile, a support shell can be installed at the tail of the double-layer screen inclined vibration in-situ lunar soil screening mechanism. This support shell can be used to protect the double-layer screen inclined vibration in-situ lunar soil screening mechanism and prevent external equipment from interfering with it.
[0060] In some alternative embodiments, the inclined screen assembly 5 and the horizontal screen assembly 6 include a screen 11, a micro-electrode 12, and an alternating power supply 13, wherein the screen 11 is connected to the alternating power supply 13 via the micro-electrode 12.
[0061] An array of micro-electrodes 12 is arranged on the screen 11. When a high-frequency alternating current is applied to the micro-electrodes 12, they will repel lunar dust with the same charge and attract lunar dust with neutral and opposite charges in the form of pulsed discharge. Because the current is alternating, it can stably peel off the fine charged lunar soil attached to the micro-electrodes 12 and the screen holes. This detached lunar soil will then participate in the sieving process again. During the sieving process, electrostatic force is used to adsorb charged micro- and nano-sized lunar dust onto the electrodes. After one alternating current, the electrostatic force repels and pushes away the attached lunar dust. Macroscopically, this is an adsorption-repulsion process between charged lunar dust and the electrodes. This process can effectively reduce dust generation, prevent dust from affecting other equipment and the components of the mechanism, and extend its service life.
[0062] In some optional embodiments, the tilt angle of the inclined screen assembly 5 is 30°-75°. This angle setting facilitates the screening of lunar soil on the inclined screen assembly 5 onto the horizontal mesh assembly under the action of gravity. At the same time, it also facilitates the flow of lunar soil from the discharge port 4 into the coarse soil receiving hopper 41 for collection.
[0063] Specifically, the tilt angle of the inclined screen assembly 5 can be 45°. Of course, it can also be set according to the actual situation.
[0064] In this embodiment, there are two eccentric vibration components 24, which are symmetrically arranged to ensure the stable operation of the eccentric vibration components 24.
[0065] In some optional embodiments, the eccentric vibration assembly 24 includes a cam 14, a connecting tube 15, and a spring 16. The cam 14 is connected to the drive structure 10, and the spring 16 is disposed inside the connecting tube 15, which is connected to the cam 14.
[0066] The spring 16 can be excited with varying stroke to provide excitation force for the inclined screen assembly 5 and the horizontal screen assembly 6. The rotation of the cam 14 causes the spring 16 and the connecting pipe 15 to drive the inclined screen assembly 5 and the horizontal screen assembly 6 to move linearly, thereby causing elastic deformation of the horizontal screen assembly 6. The screen surface is periodically tightened and relaxed, causing the particles on the screen surface to be continuously thrown up, making the easily aggregated lunar soil loose and achieving uniform secondary screening.
[0067] The drive structure 10 includes two motors connected to the cam 14. The motors are mounted inside the base 9 and are sealed to reduce the impact of falling lunar regolith on them.
[0068] The double-layer screen inclined vibration in-situ lunar soil screening mechanism also includes a sliding structure, which is disposed on the fine soil receiving hopper 7 and the base 9. The sliding mechanism includes a slide rail 17 and a groove 18, the slide rail 17 is disposed on the base 9, and the groove 18 is disposed at the bottom of the fine soil receiving hopper 7.
[0069] The sliding rail 17 and groove 18 enable a sliding connection between the fine soil receiving hopper 7 and the upper surface of the base 9, ensuring the reliability of the pulling process and preventing the lunar soil from being worn.
[0070] The double-layer screen inclined vibration in-situ lunar soil screening mechanism also includes a connector 19, which is disposed on the support 8 and the base 9. The connector 19 is used to connect the support 8 and the base 9, so that the base 9 and the support 8 are connected into one piece, thereby facilitating the vibration excitation of the eccentric vibration assembly 24.
[0071] The present invention also provides a lunar soil transportation system, including the double-layer screen inclined vibration in-situ lunar soil screening mechanism, and further including: an electrode plate 20, disposed at the bottom of the coarse soil receiving hopper 41 and the fine soil receiving hopper 7; an array electrode 21, disposed on the outer shell 22 of the coarse soil receiving hopper 41 and the fine soil receiving hopper 7, wherein the array electrode 21 and the electrode plate 20 form a dust suppression electric field.
[0072] During lunar exploration activities, the concentration of lunar dust stirred up by actively operating lunar equipment is far higher than the natural dust emission effect on the lunar surface. Charged micro- and nano-sized lunar dust particles adhere to the surfaces of equipment, spacesuits, and other objects. Because lunar dust particles are highly abrasive, they not only severely impact lunar equipment but also affect the health of astronauts. Therefore, it is necessary to consider adding necessary dust-proof measures to the screening mechanism.
[0073] The first measure is: 3 traveling wave directional conveying at the feed port.
[0074] Please see Figures 12 to 13 As shown, dust is generated when the robot feeds material to the screening mechanism. This can be addressed using AC traveling wave directional transport technology. A plane is added around the feed inlet 3, and a layer of parallel alternating electrodes is designed inside it. When AC current is applied to the electrodes, a strong alternating electric field exists on the surface. Under the polarization of the strong electric field, the dust particles overcome adhesion and gravity, causing them to jump. The scattered dust particles will move into the screening mechanism under the action of the traveling wave, reducing dust hazards.
[0075] The second measure is to install a dust-suppressing electric field.
[0076] Please see Figures 13 to 15As shown, dust may occur when the coarse soil receiving hopper 41 and the fine soil receiving hopper 7 are removed after the screening process is completed. Therefore, a dust-suppressing electric field is set up around the receiving hoppers to prevent dust from drifting outwards.
[0077] In this embodiment, taking the coarse soil receiving hopper 41 as an example, the dust suppression electric field mode of the fine soil receiving hopper 7 is the same as that of the coarse soil receiving hopper 41.
[0078] An electrode plate 20 is installed at the bottom of the coarse soil receiving hopper 41, and a needle-shaped electrode array is installed on the outer shell 22 above the outlet of the coarse soil receiving hopper 41. When the coarse soil receiving hopper 41 is inside the screening mechanism, the bottom electrode plate 20 is positively charged, attracting the screened fine soil dust particles. When the coarse soil receiving hopper 41 is withdrawn, the array electrode 21 above the outlet of the coarse soil receiving hopper 41 forms a dust-suppressing electric field with the electrode plate 20 at the bottom of the coarse soil receiving hopper 41, applying a downward electric field force to the dust particles and suppressing the generation of dust. After the coarse soil receiving hopper 41 is withdrawn, the bottom electrode plate 20 is de-energized, and the transfer of dust particles is not affected.
[0079] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.
Claims
1. A double-layer screen inclined vibration in-situ lunar soil screening mechanism, characterized in that, include: A support frame (1) is provided with a cover (2), and the cover (2) is provided with a feeding port (3) and a discharge port (4), and the discharge port (4) is connected to a coarse soil receiving hopper (41); Inclined screen assembly (5) and horizontal screen assembly (6) are disposed within the support frame (1), with the inclined screen of the inclined screen assembly located above the horizontal screen of the horizontal screen assembly. A fine soil receiving hopper (7) is located below the horizontal screen, and a support member (8) is provided between the fine soil receiving hopper (7) and the support frame (1). The base (9) is located at the bottom of the fine soil receiving hopper (7) and is slidably connected to the fine soil receiving hopper (7). The base (9) is provided with a driving structure (10). The driving structure (10) is connected to one end of the eccentric vibration assembly (24). One end of the eccentric vibration assembly (24) is connected to the support member (8). The inclined screen assembly (5) and the horizontal screen assembly (6) include a screen and micro-electrodes (12) and an alternating power supply (13). The screen is connected to the alternating power supply (13) through the micro-electrodes (12). An array of micro-electrodes (12) is arranged on the screen. When the micro-electrodes (12) are connected to the high-frequency alternating power supply, the micro-electrodes (12) will repel lunar dust with the same charge attached to them in the form of pulse discharge, and attract lunar dust with neutral and opposite charges.
2. The double-layer screen inclined vibration in-situ lunar soil screening mechanism according to claim 1, characterized in that, The tilt angle of the inclined screen assembly (5) is 30°-75°.
3. The double-layer screen inclined vibration in-situ lunar soil screening mechanism according to claim 1 or 2, characterized in that, There are two eccentric vibration components (24), and the two eccentric vibration components (24) are arranged symmetrically.
4. The double-layer screen inclined vibration in-situ lunar soil screening mechanism according to claim 3, characterized in that, The eccentric vibration assembly (24) includes a cam (14), a connecting tube (15), and a spring (16). The cam (14) is connected to the drive structure (10), and the spring (16) is located inside the connecting tube (15). The connecting tube (15) is connected to the cam (14).
5. The double-layer screen inclined vibration in-situ lunar soil screening mechanism according to claim 4, characterized in that, The drive structure (10) includes two motors connected to the cam (14).
6. The double-layer screen inclined vibration in-situ lunar soil screening mechanism according to claim 5, characterized in that, It also includes a sliding structure, which is disposed on the fine soil receiving hopper (7) and the base (9).
7. The double-layer screen inclined vibration in-situ lunar soil screening mechanism according to claim 6, characterized in that, The sliding structure includes a slide rail (17) and a groove (18). The slide rail (17) is located on the base (9), and the groove (18) is located at the bottom of the fine soil receiving hopper (7).
8. The double-layer screen inclined vibration in-situ lunar soil screening mechanism according to claim 1, characterized in that, It also includes a connector (19), which is disposed on the support (8) and the base (9) and is used to connect the support (8) and the base (9).
9. A lunar soil transportation system, characterized in that, The double-layer screen inclined vibration in-situ lunar soil screening mechanism according to any one of claims 1-8 further includes: Electrode plates (20) are disposed at the bottom of the coarse soil receiving hopper (41) and the fine soil receiving hopper (7); An array electrode (21) is provided at the outlet of the coarse soil receiving hopper (41) and the fine soil receiving hopper (7), and the array electrode (21) and the electrode plate (20) form a dust suppression electric field.