Laser-assisted coring drilling tool for moon-based extreme environment

Abstract

The invention belongs to the technical field of moon sampling, and provides a laser-assisted coring drilling tool for a moon-based extreme environment, which comprises a drill bit, a base, a laser transmitter, a drill rod and a motor, the bottom of the base is rotatably connected with the drill rod, the bottom of the drill rod is fixedly connected with the drill bit, the laser transmitter is installed on the base, the motor is installed above the base, and the motor is connected with the drill rod; a drill rod guide hole allowing laser to penetrate through is formed in the side wall of the drill rod, and the laser emitted by the laser emitter penetrates through the drill rod guide hole and the drill bit. According to the invention, in a lunar extreme environment with limited volume and limited mass, the targets of laser and machinery cooperation, high efficiency and continuous operation are realized, the technical problems of difficult space arrangement, low independent laser irradiation efficiency, long coring period and the like of a traditional drilling tool are solved, and the efficiency of a lunar geology coring task and the fidelity of a rock sample are remarkably improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of lunar sampling, and in particular relates to a laser-assisted coring drill for use in extreme lunar environments. Background Art

[0002] Due to the extreme lunar environment, the crushing and drilling of lunar rocks has long faced significant challenges. The lunar surface is characterized by vacuum, intense radiation, drastic temperature swings (-170°C to +120°C), and low gravity (1 / 6g). These characteristics severely restrict the performance stability and sampling efficiency of traditional mechanical drilling tools.

[0003] Existing mechanical drilling tools generally have the following problems: First, the drilling tools are difficult to advance in high-strength rocks and suffer severe wear, resulting in a short lifespan; second, the drilling pressure is limited, and it is difficult to form effective propulsion force, especially in a low-gravity environment; third, the overall structure is complex and the volume is large, which is not conducive to transportation and deployment in lunar missions; fourth, it is impossible to intelligently adapt the drilling strategy according to different rock types, resulting in low sampling efficiency and high energy consumption.

[0004] Laser-assisted rock breaking technology, as an efficient, non-contact, and highly directional energy input method, has garnered widespread attention in recent years in geological engineering and extreme environment operations. Lasers can rapidly heat the rock surface to induce thermal stress fields, triggering microcracks to propagate and promote fracture, thereby reducing the difficulty of mechanical crushing. However, existing laser systems are mostly standalone structures and have not yet been effectively integrated with drilling tools, failing to meet the compact space and continuous operation requirements of lunar surface operations.

[0005] Given this, there is an urgent need to develop an integrated drilling tool suitable for the extreme lunar environment, combining laser pre-breaking and mechanical coring capabilities to enable deep, continuous, and high-fidelity coring of primary lunar rocks. This proposed laser-assisted coring drill tool for extreme lunar environments achieves collaborative laser and mechanical coring within a limited volume, effectively improving drilling efficiency and core integrity. This provides a key foundation for future lunar geological exploration, resource assessment, and construction projects. Summary of the Invention

[0006] To solve the above technical problems, the present invention provides a laser-assisted coring drill for lunar-based extreme environments to solve the problems in the prior art. The technical solution adopted by the present invention is: A laser-assisted coring drill for extreme lunar environments, including a drill bit, a base, a laser transmitter, a drill rod, and a motor; The bottom of the base is rotatably connected to the drill rod, the bottom of the drill rod is fixedly connected to the drill bit, the laser emitter is installed on the base, the motor is installed above the base, and the motor is connected to the drill rod; A drill rod guide hole for laser to pass through is provided inside the side wall of the drill rod, and the laser emitted by the laser emitter passes through the drill rod guide hole and passes through the drill bit.

[0007] Furthermore, a central hole is provided in the base, a reflector seat is provided at the upper end of the central hole, and a connecting rod is provided at the lower end of the central hole; The bottom of the connecting rod passes through the center hole and is connected to the drill rod. The reflector seat is a hollow structure. The top of the connecting rod is connected to the motor. The connecting rod is rotatably connected to the base. The laser emitter is mounted on the side of the base, a radial hole communicating with the central hole is provided on the inner side of the base, a reflector for reflecting laser light is provided at the bottom of the reflector seat, the laser light emitted by the laser emitter passes through the radial hole and irradiates the reflector, and is reflected downwardly into the drill rod guide hole through the reflector.

[0008] Furthermore, a notch is provided on the bottom side of the reflector seat, and the inner wall surface of the notch is an inclined surface, and the reflector is fixedly connected to the inclined surface to achieve the function of changing the laser angle.

[0009] Furthermore, the top of the reflector seat is "T"-shaped, and its "T"-shaped structure is connected to the top surface of the base through a locking bolt. The top surface of the base is provided with a jacking bolt, and the jacking bolt abuts the bottom of the reflector seat. The jacking bolt is used to adjust the height of the reflector seat to adjust the height of the reflector; The outer side surface of the base is fixedly connected to the ball groove shell, the fixed end of the laser emitter passes through the ball groove shell, a hemisphere is fixedly set on the laser emitter, a spherical groove is set in the ball groove shell, the hemisphere is set in the spherical groove for adjusting the angle of the laser emitter, and a tightening bolt abutting the hemisphere is set on the ball groove shell.

[0010] Furthermore, a connecting ring is sleeved on the connecting rod, the connecting ring is fixedly connected to the connecting rod, and the connecting ring is rotatably connected to the bottom of the base; the connecting ring is fixedly connected to the top of the drill rod, the bottom of the connecting rod passes through the connecting ring and is inserted into the top of the drill rod, and the connecting rod and the drill rod are spline-fitted; A base guide hole is provided inside the lower end side wall of the base, a connecting ring guide hole is provided inside the side wall of the connecting ring, and a drill bit guide hole is provided inside the side wall of the drill bit; the connecting ring guide hole, the drill rod guide hole and the drill bit guide hole are connected and on the same axis; the connecting ring guide hole, the drill rod guide hole and the drill bit guide hole are all arc-shaped holes; When the connecting ring rotates to connect with the base guide hole, the laser emitter is started, and the laser emitted by the laser emitter passes through the radial hole, the base guide hole, the connecting ring guide hole and the drill rod guide hole in sequence, and is emitted from the drill bit guide hole.

[0011] Furthermore, the central hole is a stepped structure, the inner diameter of the upper portion is larger than that of the lower portion, the radial hole is connected to the upper portion, the reflector seat is arranged in the upper portion, the top opening of the base guide hole is opened on the top end surface of the lower portion, and the reflector is located directly above the top opening of the base guide hole; The top of the connecting rod is fixedly connected to the transmission rod, the transmission rod passes through the reflection seat and is connected to the output end of the motor, the outer diameter of the transmission rod is smaller than the outer diameter of the connecting rod, and the top of the transmission rod abuts the bottom of the reflection seat.

[0012] Furthermore, the base is fixedly connected to the mounting platform through a bracket, the bottom of the mounting platform is detachably connected to the support sleeve, the top of the reflector seat is provided with a groove, the bottom of the support sleeve is inserted into the groove, the top of the mounting platform is rotatably connected to the transmission ring, the top of the transmission rod passes through the support sleeve and the mounting platform and is arranged in the transmission ring, the transmission rod and the transmission ring are spline-fitted, the top of the transmission ring is detachably connected to the drive ring, and the drive ring is fixedly connected to the motor output end; the mounting platform is used to be installed on a lunar-based carrying device.

[0013] Furthermore, a sampling sleeve is provided in the drill rod, and the top of the sampling sleeve is connected to the bottom of the connecting rod.

[0014] Furthermore, the drill bit has a hollow structure, the bottom of the sampling sleeve is arranged in the drill bit, the drill bit is circumferentially provided with cutting teeth, the lower end face of the drill bit is fixedly connected with an anti-blocking protrusion, and the drill bit guide hole is arranged between the two anti-blocking protrusions.

[0015] Furthermore, a plurality of laser emitters and corresponding drill rod guide holes are arranged around the drill rod.

[0016] The present invention has the following beneficial effects: In the extreme lunar environment with limited volume and mass, the present invention achieves the goal of coordinated, efficient and continuous operation of laser and machinery, solves technical difficulties such as the difficulty of spatial arrangement of traditional drilling tools, low efficiency of independent laser irradiation, and long coring cycle, significantly improves the efficiency of lunar geological coring missions and the fidelity of rock samples, and provides key equipment support for future lunar soil and rock resource exploration, underground structure construction, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the overall structural diagram of the present invention; Figure 2 yes Figure 1 A in the middle is an enlarged schematic diagram; Figure 3 It is a schematic diagram of the notch portion; Figure 4 yes Figure 1 BB-direction cross-sectional view; Figure 5 yes Figure 1 The enlarged schematic diagram of point C in the middle; Figure 6 This is a schematic diagram of the drill bit viewed from above. DETAILED DESCRIPTION

[0018] The following is a combination of the embodiments of the present invention Figures 1-6 , the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

[0019] like Figure 1 , a laser-assisted coring drill for extreme lunar environments, comprising a drill bit 1, a base 4, a laser transmitter 5, a drill rod 8 and a motor 9; The bottom of the base 4 is rotatably connected to the drill rod 8, and the bottom of the drill rod 8 is fixedly connected to the drill bit 1. The laser emitter 5 is installed on the base 4, and the motor 9 is installed above the base 4, and the motor 9 is connected to the drill rod 8; A drill rod guide hole 801 for laser light to pass through is provided inside the side wall of the drill rod 8 . The laser light emitted by the laser emitter 5 passes through the drill rod guide hole 801 and then through the drill bit 1 .

[0020] Specifically, the present invention allows the mounting platform 2 on the base 4 to be deployed on lunar rovers, exploration equipment, or lunar-based facilities. It can be operated manually or by an unmanned vehicle. The base 4 can be mounted on a linear drive device (e.g., an electric cylinder, hydraulic cylinder, motor-screw mechanism, etc., not shown) to achieve integrated feed of the coring drill tool of the present invention. The motor 9 then rotates the drill rod 8 to achieve drilling.

[0021] During coring, motor 9 activates, driving drill rod 8 through a transmission mechanism, which in turn drives drill bit 1 at the bottom. Simultaneously, laser emitter 5 activates, transmitting laser light through guide hole 801 in the drill rod to drill bit 1, where it irradiates the surface of the lunar regolith to be cored. The laser energy preheats and softens the lunar regolith, which then cooperates with the mechanical cutting of drill bit 1 to achieve a coordinated coring operation, combining laser softening and mechanical fragmentation.

[0022] In the extreme lunar environment with limited volume and mass, the present invention achieves the goal of coordinated, efficient, and continuous operation of laser and machinery, solves technical difficulties such as the difficulty of spatial arrangement of traditional drilling tools, low efficiency of independent laser irradiation, and long coring cycle, and significantly improves the efficiency of lunar geological coring missions and the fidelity of rock samples, providing key equipment support for future lunar soil and rock resource exploration, underground structure construction, etc.

[0023] like Figure 2-Figure 4 A center hole is provided in the base 4, a reflective seat 10 is provided at the upper end of the center hole, and a connecting rod 6 is provided at the lower end of the center hole; The bottom of the connecting rod 6 passes through the center hole and is connected to the drill rod 8. The reflector 10 is a hollow structure. The top of the connecting rod 6 is connected to the motor 9. The connecting rod 6 is rotatably connected to the base 4. The laser emitter 5 is mounted on the side of the base 4. A radial hole 401 connected to the center hole is provided on the inner side of the base 4. A reflector 11 for reflecting laser light is provided at the bottom of the reflector seat 10. The laser light emitted by the laser emitter 5 passes through the radial hole 401 and irradiates the reflector 11, and is reflected downward into the drill rod guide hole 801 through the reflector 11.

[0024] The laser emitted by the laser emitter 5 first passes through the radial hole 401 along the radial direction of the drill rod 8 and enters the upper end part of the center hole of the base. After irradiating the surface of the reflector 11, the propagation direction is changed after reflection and enters the drill rod guide hole 801 vertically downward; at the same time, the motor 9 drives the drill rod 8 to rotate through the connecting rod 6, realizing the coordination of laser transmission and mechanical rotation. The reflector 11 changes the laser propagation path through the principle of light reflection, solving the contradiction between the lateral installation of the laser emitter 5 and the axial transmission direction of the laser to the drill bit 1, making the overall structure more compact; the rotating connection between the connecting rod 6 and the base 4 ensures that when the drill rod 8 rotates, the base 4 and the laser emitter 5 remain fixed, avoiding the deviation of the laser transmission path. Furthermore, a notch 106 is provided on the bottom side of the reflector seat 10 . The inner wall of the notch 106 is an inclined surface, and the reflector 11 is fixedly connected to the inclined surface to achieve the function of changing the laser angle.

[0025] Laser light emitted by laser emitter 5 passes through radial holes 401 and strikes reflector 11 in notch 106. The inclined surface of reflector 11 angles it at a preset angle (e.g., 45°). After reflection, the laser light enters drill rod guide hole 801 at a vertically downward angle. The notch's inclined surface provides a fixed inclination reference for reflector 11. This preset inclination (designed based on the positional relationship between radial holes 401 and drill rod guide hole 801) ensures that the laser light, after reflection, is precisely aligned with the entrance of drill rod guide hole 801. The laser emitter 5 and the reflector 11 are both existing technologies. The tail of the laser emitter 5 extends out of the base 4 and is connected to the corresponding power supply and controller; the reflector 11 uses a high-energy laser reflector, such as a dielectric film reflector or a diamond reflector for high-intensity lasers, which can effectively reflect lasers and reduce heat loss.

[0026] Furthermore, the top of the reflector 10 is T-shaped, and its T-shaped structure is connected to the top surface of the base 4 via a locking bolt 101. The top surface of the base 4 is provided with a jacking bolt 103, which abuts against the bottom of the reflector 10. The jacking bolt 103 is used to adjust the height of the reflector 10 to adjust the height of the reflector 11. The outer side surface of the base 4 is fixedly connected to the ball groove shell 501, and the fixed end of the laser emitter 5 passes through the ball groove shell 501. A hemisphere 502 is fixedly set on the laser emitter 5. A spherical groove is set in the ball groove shell 501. The hemisphere 502 is set in the spherical groove for adjusting the angle of the laser emitter 5. A tightening bolt abutting the hemisphere 502 is set on the ball groove shell 501.

[0027] By adjusting the height of jacking bolt 103, the height of the "T"-shaped portion of reflector base 10 supported by it is adjusted, thereby adjusting the height of reflector 11. To adjust the angle of laser emitter 5, loosen the clamping bolt, rotate hemispherical body 502 within the spherical groove to adjust the emitter's direction, and tighten the clamping bolt once it is in place. By adjusting the angle of laser emitter 5 and the height of reflector 11, the laser beam is ensured to accurately enter the drill pipe guide hole 801, improving the accuracy and stability of laser transmission.

[0028] Furthermore, a connecting ring 12 is sleeved on the connecting rod 6, the connecting ring 12 is fixedly connected to the connecting rod 6, and the connecting ring 12 is rotatably connected to the bottom of the base 4; the connecting ring 12 is fixedly connected to the top of the drill rod 8, the bottom of the connecting rod 6 passes through the connecting ring 12 and is inserted into the top of the drill rod 8, and the connecting rod 6 and the drill rod 8 are spline-fitted; A base guide hole 402 is provided inside the side wall of the lower end of the base 4, a connecting ring guide hole 121 is provided inside the side wall of the connecting ring 12, and a drill guide hole 102 is provided inside the side wall of the drill bit 1; the connecting ring guide hole 121, the drill rod guide hole 801, and the drill guide hole 102 are connected and on the same axis; the connecting ring guide hole 121, the drill rod guide hole 801, and the drill guide hole 102 are all arc-shaped holes; When the connecting ring 12 rotates until the base guide hole 402 is connected to the connecting ring guide hole 121, the laser emitter 5 is started, and the laser emitted by the laser emitter 5 passes through the radial hole 401, the base guide hole 402, the connecting ring guide hole 121 and the drill rod guide hole 801 in sequence, and is emitted from the drill bit guide hole 102.

[0029] The splined connection between connecting rod 6 and drill rod 8 enables power transmission and axial positioning. The rotational connection between connecting ring 12 and base 4 ensures that base 4 remains stationary during drill rod 8 rotation. Motor 9 drives connecting rod 6 to rotate, and connecting ring 12 rotates synchronously with it. When connecting ring guide hole 121 aligns with base guide hole 402, the laser beam passes through each guide hole in sequence and is finally emitted from drill bit guide hole 102. During drill rod 8 rotation, connecting ring guide hole 121, drill rod guide hole 801, and drill bit guide hole 102 remain connected. When base guide hole 402 and connecting ring guide hole 121 overlap at a certain angle (e.g., within 30°), laser emitter 5 maintains continuous output, resolving the conflict between drill rod 8 rotation and continuous laser transmission. The laser emitter 5 of the present invention employs a periodic emission scheme during the rotation of the drill rod 8. That is, the laser emitter 5 activates and continuously emits light for a specified period of time only when the base guide hole 402 and the connecting ring guide hole 121 overlap at a certain angle. Therefore, the laser emitter 5 activates once for each rotation of the drill rod 8. This periodic emission scheme reduces energy consumption and avoids ineffective emission when the base guide hole 402 and the connecting ring guide hole 121 are misaligned. From the perspective of laser softening performance, although the laser does not emit continuously, the "effective illumination window" of periodic emission closely matches the cutting rhythm of the drill bit 1. When the base guide hole 402 and the connecting ring guide hole 121 overlap, the continuous illumination time is sufficient for the laser energy to accumulate and soften the lunar soil. When the base guide hole 402 and the connecting ring guide hole 121 rotate to a point of misalignment, the heated and softened lunar soil enters the cutting range of the drill bit 1, and cutting can be completed without continuous laser illumination. Therefore, this timing coordination of irradiation and cutting makes the laser softening effect very similar to that of the continuous emission mode, does not significantly reduce the performance of laser softening, does not affect the coring efficiency, and can greatly reduce energy consumption. It also solves the contradiction between the rotation of the drill rod 8 and the continuous transmission of the laser.

[0030] Furthermore, the central hole is a stepped structure, wherein the inner diameter of the upper portion is larger than that of the lower portion, the radial hole 401 is connected to the upper portion, the reflector seat 10 is disposed in the upper portion, the top opening of the base guide hole 402 is disposed on the top end surface of the lower portion, and the reflector 11 is located directly above the top opening of the base guide hole 402; The top of the connecting rod 6 is fixedly connected to the transmission rod 601, and the transmission rod 601 passes through the reflector seat 10 and is connected to the output end of the motor 9. The outer diameter of the transmission rod 601 is smaller than the outer diameter of the connecting rod 6, and the top of the transmission rod 601 abuts the bottom of the reflector seat 10.

[0031] Motor 9 drives connecting rod 6 and drill rod 8 to rotate via transmission rod 601. The upper end of the stepped center hole accommodates reflector seat 10 and the laser reflector structure, while the lower end limits radial movement of connecting rod 6. Laser light reflected by reflector 11 enters vertically into the top opening of base guide hole 402, achieving precise laser guidance. The stepped center hole's varying inner diameters allow for functional zoning, preventing interference between reflective structures like reflector seat 10 and transmission components like connecting rod 6. The small diameter of transmission rod 601 reserves space at the bottom of reflector seat 10, while also abutting against it for axial positioning. Furthermore, the base 4 is fixedly connected to the mounting platform 2 through the bracket 201, and the bottom of the mounting platform 2 is detachably connected to the support sleeve 13 by bolts. The top of the reflector seat 10 is provided with a groove, and the bottom of the support sleeve 13 is inserted into the groove. The top of the mounting platform 2 is rotatably connected to the transmission ring 902, and the top of the transmission rod 601 passes through the support sleeve 13 and the mounting platform 2 and is arranged in the transmission ring 902. The transmission rod 601 and the transmission ring 902 are spline-fitted, and the top of the transmission ring 902 is detachably connected to the drive ring 901 by bolts, and the drive ring 901 is fixedly connected to the output end of the motor 9; the mounting platform 2 is used to be installed on a lunar-based carrying device.

[0032] Fix the mounting platform 2 on a carrying device such as a lunar-based vehicle, and the motor 9 drives the transmission ring 902 to rotate through the drive ring 901. The transmission ring 902 drives the transmission rod 601 to rotate through the spline; the support sleeve 13 is inserted into the groove of the reflector seat 10 to provide axial support for the reflector seat 10. Furthermore, a sampling sleeve 7 is provided in the drill rod 8 , and the top of the sampling sleeve 7 is connected to the bottom of the connecting rod 6 .

[0033] like Figure 5 、 Figure 6 The drill bit 1 is a hollow structure, the bottom of the sampling sleeve 7 is arranged in the drill bit 1, the drill bit 1 is circumferentially provided with cutting teeth, the lower end surface of the drill bit 1 is fixedly connected to an anti-blocking protrusion 101, and the drill bit guide hole 102 is arranged between the two anti-blocking protrusions 101.

[0034] The laser is emitted from the drill guide hole 102 between the two anti-blocking bumps 101, pre-heating the lunar soil in front of the cutting teeth; the cutting teeth rotate to cut the softened lunar soil, and the anti-blocking bumps 101 push away large debris to avoid clogging the drill guide hole 102; the cut sample enters the sampling sleeve 7 through the hollow drill bit 1. The top of the sampling sleeve 7 can be connected to the bottom of the connecting rod 6 by plug-in fitting or thread fitting. After the coring operation is completed, the sampling sleeve 7 can be removed to take out the sample.

[0035] Furthermore, multiple laser emitters 5 and corresponding drill rod guide holes 801 are circumferentially arranged around the drill rod 8. Multiple laser emitters 5 simultaneously emit laser light, illuminating cutting areas of the drill bit 1 at different locations through the circumferentially distributed drill rod guide holes 801, achieving multi-point simultaneous heating. Correspondingly, multiple connecting ring guide holes 121, drill bit guide holes 102, radial holes 401, reflectors 11, notches 106, and base guide holes 402 are provided, the same number as the laser emitters 5 and drill rod guide holes 801, and their positions correspond to each other.

[0036] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various deformations, modifications, and substitutions made to the technical solutions of the present invention by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A laser-assisted coring drill for extreme lunar environments, characterized in that: It includes a drill bit (1), a base (4), a laser transmitter (5), a drill rod (8) and a motor (9); The bottom of the base (4) is rotatably connected to the drill rod (8), the bottom of the drill rod (8) is fixedly connected to the drill bit (1), the laser transmitter (5) is installed on the base (4), the motor (9) is installed above the base (4), and the motor (9) is connected to the drill rod (8); A drill rod guide hole (801) for laser light to pass through is provided inside the side wall of the drill rod (8), and the laser light emitted by the laser emitter (5) passes through the drill rod guide hole (801) and through the drill bit (1).

2. The laser-assisted coring drill for lunar-based extreme environments according to claim 1, characterized in that: A central hole is provided in the base (4), a reflective seat (10) is provided at the upper end of the central hole, and a connecting rod (6) is provided at the lower end of the central hole; The bottom of the connecting rod (6) passes through the central hole and is connected to the drill rod (8); the reflector seat (10) is a hollow structure; the top of the connecting rod (6) is connected to the motor (9); the connecting rod (6) is rotatably connected to the base (4); The laser emitter (5) is mounted on the side of the base (4); a radial hole (401) communicating with the central hole is provided on the inner side of the base (4); a reflector (11) for reflecting laser light is provided at the bottom of the reflector seat (10); laser light emitted by the laser emitter (5) passes through the radial hole (401) and irradiates the reflector (11), and is reflected downwards into the drill rod guide hole (801) by the reflector (11).

3. The laser-assisted coring drill for lunar-based extreme environments according to claim 2, characterized in that: A notch portion (106) is provided on the bottom side of the reflector seat (10), and the inner wall surface of the notch portion (106) is an inclined surface, and the reflector (11) is fixedly connected to the inclined surface to achieve the function of changing the laser angle.

4. The laser-assisted coring drill for lunar-based extreme environments according to claim 2, characterized in that: The top of the reflector seat (10) is in a "T" shape, and its "T"-shaped structure is connected to the top surface of the base (4) via a locking bolt (101). The top surface of the base (4) is provided with a jacking bolt (103), and the jacking bolt (103) abuts against the bottom of the reflector seat (10). The jacking bolt (103) is used to adjust the height of the reflector seat (10) to adjust the height of the reflector (11); The outer side surface of the base (4) is fixedly connected to the ball groove shell (501), the fixed end of the laser emitter (5) passes through the ball groove shell (501), a hemisphere (502) is fixedly arranged on the laser emitter (5), a spherical groove is arranged in the ball groove shell (501), the hemisphere (502) is arranged in the spherical groove for adjusting the angle of the laser emitter (5), and a tightening bolt abutting against the hemisphere (502) is arranged on the ball groove shell (501).

5. The laser-assisted coring drill for lunar-based extreme environments according to claim 2, characterized in that: A connecting ring (12) is sleeved on the connecting rod (6), the connecting ring (12) is fixedly connected to the connecting rod (6), and the connecting ring (12) is rotatably connected to the bottom of the base (4); the connecting ring (12) is fixedly connected to the top of the drill rod (8), the bottom of the connecting rod (6) passes through the connecting ring (12) and is inserted into the top of the drill rod (8), and the connecting rod (6) and the drill rod (8) are spline-fitted; A base guide hole (402) is provided inside the side wall of the lower end of the base (4), a connecting ring guide hole (121) is provided inside the side wall of the connecting ring (12), and a drill guide hole (102) is provided inside the side wall of the drill bit (1); the connecting ring guide hole (121), the drill rod guide hole (801) and the drill bit guide hole (102) are connected and on the same axis; the connecting ring guide hole (121), the drill rod guide hole (801) and the drill bit guide hole (102) are all arc-shaped holes; When the connecting ring (12) rotates until the base guide hole (402) is connected to the connecting ring guide hole (121), the laser emitter (5) is activated, and the laser emitted by the laser emitter (5) passes through the radial hole (401), the base guide hole (402), the connecting ring guide hole (121) and the drill rod guide hole (801) in sequence, and is emitted from the drill bit guide hole (102).

6. The laser-assisted coring drill for lunar-based extreme environments according to claim 5, characterized in that: The central hole is a stepped structure, the inner diameter of the upper portion is larger than that of the lower portion, the radial hole (401) is connected to the upper portion, the reflector seat (10) is arranged in the upper portion, the top opening of the base guide hole (402) is opened on the top end surface of the lower portion, and the reflector (11) is located directly above the top opening of the base guide hole (402); The top of the connecting rod (6) is fixedly connected to a transmission rod (601), the transmission rod (601) passes through the reflection seat (10) and is connected to the output end of the motor (9), the outer diameter of the transmission rod (601) is smaller than the outer diameter of the connecting rod (6), and the top of the transmission rod (601) abuts against the bottom of the reflection seat (10).

7. The laser-assisted coring drill for lunar-based extreme environments according to claim 6, characterized in that: The base (4) is fixedly connected to the mounting platform (2) via a bracket (201); the bottom of the mounting platform (2) is detachably connected to a support sleeve (13); the top of the reflector seat (10) is provided with a groove; the bottom of the support sleeve (13) is inserted into the groove; the top of the mounting platform (2) is rotatably connected to a transmission ring (902); the top of the transmission rod (601) passes through the support sleeve (13) and the mounting platform (2) and is arranged in the transmission ring (902); the transmission rod (601) and the transmission ring (902) are spline-matched; the top of the transmission ring (902) is detachably connected to a drive ring (901); the drive ring (901) is fixedly connected to the output end of the motor (9); the mounting platform (2) is used for mounting on a lunar-based carrying device.

8. The laser-assisted coring drill for lunar-based extreme environments according to claim 5, characterized in that: A sampling sleeve (7) is provided in the drill rod (8), and the top of the sampling sleeve (7) is connected to the bottom of the connecting rod (6).

9. The laser-assisted coring drill for lunar-based extreme environments according to claim 8, characterized in that: The drill bit (1) is a hollow structure, the bottom of the sampling sleeve (7) is arranged in the drill bit (1), cutting teeth are arranged circumferentially on the drill bit (1), an anti-blocking protrusion (101) is fixedly connected to the lower end surface of the drill bit (1), and the drill bit guide hole (102) is arranged between two of the anti-blocking protrusions (101).

10. A laser-assisted coring drill for lunar-based extreme environments according to any one of claims 1 to 9, characterized in that: A plurality of the laser emitters (5) and the corresponding drill rod guide holes (801) are circumferentially arranged around the drill rod (8).

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