A surface lunar soil sampling drill changing device

Abstract

The present application relates to deep space exploration sampling device, especially to a kind of surface lunar soil sampling drill changing drill device.It includes base, outer frame, swing mechanism, lifting mechanism, drilling mechanism and drill changing cabin, wherein swing mechanism and lifting mechanism are installed on base, outer frame is installed on the outside of swing mechanism and lifting mechanism, drilling mechanism is connected with lifting mechanism, and drill changing cabin is connected with swing mechanism.The present application realizes the cooperation of drill rig and drill changing cabin, and through executing pre-set action sequence program, can successfully complete drill disassembly, drill assembly, drill replacement, multi-stage drill disassembly, multi-stage drill assembly, composite operation process and other various tasks, to meet the requirements of lunar soil drilling task in unstructured environment.

Description

TECHNICAL FIELD

[0001] The present application relates to a deep space exploration sampling device, in particular to a surface lunar soil sampling drill changing device. BACKGROUND

[0002] Lunar sampling is of great significance to deep space exploration. The successful sampling missions of extraterrestrial objects show that drilling is an effective way to obtain lunar soil. When the drilling mechanism collects lunar soil, there is a complex interaction process between the drill and the lunar soil. The interaction between the drill and the lunar soil determines whether the drilling mechanism can take a complete lunar soil sample. In addition, lunar soil has various forms, including lunar soil particles (such as mineral fragments, primary crystalline rock fragments, breccia fragments, glass fragments, and cemented agglomerate rocks) and blocky rocks (such as basalt, anorthite, anorthosite, pyroxene, and olivine). Moreover, the random distribution of lunar soil particles and lunar rocks in the depth direction cannot be determined. Therefore, in the face of different types of unstructured sampling objects, it is necessary to design various sampling drills with specific functions. In the traditional lunar exploration drill design, the sampling drill is often single in type and limited in function, making it difficult to achieve modular automatic assembly and disassembly of the drill, and it is difficult to meet the requirements of lunar soil drilling in unstructured environments. SUMMARY

[0003] In view of the above problems, the purpose of the present application is to provide a surface lunar soil sampling drill changing device to solve the problem of difficult assembly and disassembly of existing lunar soil sampling equipment.

[0004] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0005] The present application provides a surface lunar soil sampling drill changing device, which comprises a base, an outer frame, a swing mechanism, a lifting mechanism, a drilling mechanism and a drill changing cabin. The swing mechanism and the lifting mechanism are installed on the base, the outer frame is installed outside the swing mechanism and the lifting mechanism, the drilling mechanism is connected with the lifting mechanism, and the drill changing cabin is connected with the swing mechanism. When the drill changing cabin swings to the lower side of the drilling mechanism, the drilling mechanism cooperates with the drill changing cabin to realize the drill changing process.

[0006] The swing mechanism comprises a swing arm, a rotary shaft I, a sealing cover I and a rotary drive mechanism I. The rotary shaft I is arranged in the base in a vertical direction and is rotatable. The sealing cover I is installed at the upper end of the outer frame and is used for sealing the rotary shaft I. One end of the swing arm is fixedly connected with the rotary shaft I, and the other end extends to the outside of the base in a horizontal direction and is connected with the drill changing cabin. The rotary drive mechanism I is arranged in the base and is connected with the rotary shaft I. The rotary drive mechanism I drives the rotary shaft I to rotate, thereby driving the swing arm to realize the swing action.

[0007] The rotary drive mechanism I comprises a worm I, a worm wheel I, a bearing seat I and a stepping motor I, wherein the worm wheel I is installed at the lower part of the rotary shaft I, the worm I is installed in the base through the bearing seat I and is engaged with the worm wheel I; the stepping motor I is installed in the base and the output end is connected with the worm I, and the stepping motor I is used to drive the worm I to rotate.

[0008] The lifting mechanism comprises a sealing cover II, a guide rod I, a lead screw I, a lifting arm and a rotary drive mechanism II, wherein the guide rod I and the lead screw I are arranged in the vertical direction in the outer frame, and the lead screw I is rotatable; the sealing cover II is installed at the upper end of the outer frame and is used to seal the lead screw I; one end of the lifting arm is threadedly connected with the lead screw I and is slidingly connected with the guide rod I, and the other end of the lifting arm extends to the outside of the outer frame in the horizontal direction and is connected with the drilling mechanism; the rotary drive mechanism II is arranged in the base and is connected with the lead screw I, and the rotary drive mechanism II drives the lead screw I to rotate, thereby driving the lifting arm to perform the lifting action.

[0009] The rotary drive mechanism II comprises a worm II, a worm wheel II, a bearing seat II and a stepping motor II, wherein the worm wheel II is installed at the lower end of the lead screw I, the worm II is installed in the base through the bearing seat II and is engaged with the worm wheel II; the stepping motor II is installed in the base and the output end is connected with the worm II.

[0010] The drilling mechanism comprises a drill rod, a drill sleeve, an adapter, an extension rod, a motor rack, a servo motor, a handle, a top cover, a drilling machine shell, a guide rod II, a bottom cover and a feeding mechanism, wherein the top cover and the bottom cover are arranged at the top and the bottom of the drilling machine shell respectively, and the upper end of the drilling machine shell is provided with the handle on both sides;

[0011] The guide rod II is arranged in the vertical direction in the drilling machine shell, the motor rack is slidingly connected with the guide rod II, the servo motor is arranged on the motor rack and the output end is connected with the upper end of the extension rod, the lower end of the extension rod is connected with the drill rod and the drill sleeve through the adapter, and the drill sleeve is sleeved on the outside of the drill rod; the feeding mechanism is arranged in the drilling machine shell and is connected with the motor rack, and the feeding mechanism is used to drive the drill rod to feed downward.

[0012] The feeding mechanism comprises a lead screw II, a stepping motor III, a gear transmission mechanism and a sealing cover III, wherein the upper and lower ends of the lead screw II are rotatably connected with the top cover and the bottom cover respectively, and the upper end of the lead screw II is sealed through the sealing cover III; the stepping motor III is arranged on the inner side of the top cover and the output end is connected with the lead screw II through the gear transmission mechanism; and the motor rack is threadedly connected with the lead screw II.

[0013] The drill changing cabin comprises a stepper motor IV, a rotary disc cabin, a cover and a rotary disc frame, wherein the cover is arranged on the top of the rotary disc cabin, the rotary disc frame is rotatably arranged in the rotary disc cabin, a plurality of spare drill sleeve positions and a plurality of spare drill rod positions are arranged on the rotary disc frame in the circumferential direction; the stepper motor IV is arranged at the bottom of the rotary disc cabin, and the output end is connected with the rotary disc frame, and the stepper motor IV is used for driving the rotary disc frame to rotate.

[0014] The rotary disc frame comprises a bottom drill changing rotary disc, a rotary shaft II, a top drill changing rotary disc and a top fixed shaft, wherein the rotary shaft II and the top fixed shaft are respectively installed on the bottom of the rotary disc cabin and the cover, and the top fixed shaft is coaxial with the rotary shaft II; the bottom drill changing rotary disc is rotatably installed on the rotary shaft II, and the top drill changing rotary disc is rotatably installed on the top fixed shaft.

[0015] A plurality of positioning holes are arranged on the top drill changing rotary disc and the bottom drill changing rotary disc in the circumferential direction correspondingly, so as to form the spare drill sleeve positions and the spare drill rod positions.

[0016] The cover is provided with a drill changing opening corresponding to the spare drill sleeve position or the spare drill rod position.

[0017] The advantages and beneficial effects of the present application are that the surface lunar soil sampling drill changing device provided by the present application realizes the mutual cooperation of the drilling mechanism and the drill changing cabin, can smoothly complete a plurality of tasks such as drill tool disassembly, drill tool assembly, drill tool replacement, multi-stage drill tool disassembly, multi-stage drill tool assembly and composite operation process by executing a pre-set action sequence program, and meets the requirements of lunar soil drilling and sampling tasks in an unstructured environment. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is an axonometric view of the surface lunar soil sampling drill changing device of the present application;

[0019] Figure 2 It is an axonometric view of the swing lifting mechanism in the present application;

[0020] Figure 3 It is a sectional view of the swing lifting mechanism in the present application;

[0021] Figure 4 It is an axonometric view of the drilling mechanism in the present application;

[0022] Figure 5 It is a sectional view of the drilling mechanism in the present application;

[0023] Figure 6 It is an axonometric view of the drill changing cabin in the present application;

[0024] Figure 7 It is a sectional view of the drill changing cabin in the present application;

[0025] Figure 8 It is an action sequence example diagram of the drill changing device in the present application;

[0026] In the figure: 1 is the base, 2 is the outer frame, 3 is the swing mechanism, 301 is the swing arm, 302 is the worm I, 303 is the rotary shaft I, 304 is the worm wheel I, 305 is the sealing cover I, 306 is the bearing seat I, 307 is the stepping motor I, 4 is the lifting mechanism, 401 is the sealing cover II, 402 is the guide rod, 403 is the screw I, 404 is the lifting arm, 405 is the stepping motor II, 406 is the worm II, 407 is the worm wheel II, 408 is the bearing seat II, 409 is the isolation end sleeve, 5 is the drilling mechanism, 501 is the drill rod, 502 is the drill sleeve, 503 is the adapter, 504 is the extension rod, 507 is the servo motor, 508 is the stepping motor III, 509 is the gear transmission mechanism, 510 is the sealing cover III, 511 is the handle, 512 is the top cover, 513 is the drilling machine shell, 514 is the guide rod II, 515 is the bottom cover, 6 is the drill changing cabin, 601 is the stepping motor IV, 602 is the bottom drill changing turntable, 603 is the rotary shaft II, 604 is the bottom rotary end cover, 605 is the standby drill sleeve position, 606 is the turntable cabin, 607 is the sealing cover, 608 is the top drill changing turntable, 609 is the top fixed shaft, 610 is the fixed end cover, 611 is the standby drill rod position, and 612 is the connecting plate. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application will be described in detail below with reference to the drawings and specific embodiments.

[0028] As Figure 1 shown, the present application provides a surface lunar soil sampling drill changing device, which comprises a base 1, an outer frame 2, a swing mechanism 3, a lifting mechanism 4, a drilling mechanism 5 and a drill changing cabin 6, wherein the swing mechanism 3 and the lifting mechanism 4 are installed on the base 1, the outer frame 2 is installed outside the swing mechanism 3 and the lifting mechanism 5, the drilling mechanism 5 is connected with the lifting mechanism 4, and the drill changing cabin 6 is connected with the swing mechanism 3; when the drill changing cabin 6 swings to the lower side of the drilling mechanism 5, the drilling mechanism 5 and the drill changing cabin 6 cooperate with each other, and through the execution of a pre-set action sequence program, various tasks such as drill disassembly, drill assembly, drill replacement, multi-stage drill disassembly, multi-stage drill assembly and composite operation process can be successfully completed, so as to meet the requirements of lunar soil drilling and sampling in an unstructured environment.

[0029] As Figures 2-3As shown, in an embodiment of the present invention, the rocking mechanism 3 includes a rocking arm 301, a rotating shaft I 303, a sealing cover I 305 and a rotary drive mechanism I, wherein the rotating shaft I 303 is vertically arranged in the base 1 and is rotatable, and the sealing cover I 305 is installed at the upper end of the outer frame 2 for sealing the rotating shaft I 303; one end of the rocking arm 301 is fixedly connected to the upper part of the rotating shaft I 303, and the other end extends horizontally to the outside of the base 1 and is connected to the drill changing cabin 6; the rotary drive mechanism I is arranged in the base 1 and connected to the rotating shaft I 303, and the rotary drive mechanism I drives the rotating shaft I 303 to rotate, thereby driving the rocking arm 301 to realize the rocking action.

[0030] In an embodiment of the present invention, the rotary drive mechanism 1 includes a worm 1302, a worm wheel 1304, a bearing seat 1306 and a stepper motor 1307, wherein the worm wheel 1304 is mounted at the lower portion of the rotary shaft 1303, the worm 1302 is mounted in the base 1 via the bearing seat 1306 and is engaged with the worm wheel 1304; the stepper motor 1307 is mounted in the base 1, and the output end is connected to the worm 1302. The stepper motor 1307 is used to drive the worm 1302 to rotate, and the worm 1302 drives the rotary shaft 1303 to rotate via the worm wheel 1304, thereby driving the swing arm 301 to achieve a swinging action.

[0031] like Figures 2-3 As shown, in an embodiment of the present invention, the lifting mechanism 4 includes a sealing cover II 401, a guide rod I 402, a screw I 403, a lifting arm 404 and a rotary drive mechanism II, wherein the guide rod I 402 and the screw I 403 are arranged in the outer frame 2 along the vertical direction, and the screw I 403 is rotatable; the sealing cover II 401 is installed at the upper end of the outer frame 2 for sealing the screw I 403; one end of the lifting arm 404 is threadedly connected to the screw I 403 and is slidingly connected to the guide rod I 402, and the other end of the lifting arm 404 extends horizontally to the outside of the outer frame 2 and is connected to the drilling mechanism 5; the rotary drive mechanism II is arranged in the base 1 and is connected to the screw I 403, and the rotary drive mechanism II drives the screw I 403 to rotate, thereby driving the lifting arm 404 to perform a lifting action.

[0032] In this embodiment of the present invention, the rotary drive mechanism II includes a worm II 406, a worm wheel II 407, a bearing block II 408, and a stepper motor II 405. Worm wheel II 407 is mounted at the lower end of lead screw I 403. Worm II 406 is mounted within base 1 via bearing block II 408 and meshes with worm wheel II 407. Stepper motor II 405 is mounted within base 1, with its output end connected to worm II 406. Stepper motor II 405 drives lead screw I 403 through worm II 406 and worm wheel II 407.

[0033] like Figures 4-5As shown, in the embodiment of the present invention, the drilling mechanism 5 includes a drill rod 501, a drill sleeve 502, an adapter 503, an extension rod 504, a motor frame 506, a servo motor 507, a handle 511, a top cover 512, a drilling rig housing 513, a guide rod II 514, a bottom cover 515 and a feed mechanism, wherein the top cover 512 and the bottom cover 515 are respectively arranged on the top and bottom of the drilling rig housing 513, and handles are provided on both sides of the upper end of the drilling rig housing 513. 511; Guide rod II 514 is vertically mounted within the drill housing 513. A motor frame 506 is slidably connected to guide rod II 514. A servo motor 507 is mounted on the motor frame 506, with its output end connected to the upper end of the extension rod 504. The lower end of the extension rod 504 is connected to the drill rod 501 and the drill sleeve 502 via an adapter 503. The drill sleeve 502 is mounted on the outside of the drill rod 501. The servo motor 507 drives the drill rod 501 to rotate. A feed mechanism is mounted within the drill housing 513 and connected to the motor frame 506. The feed mechanism is used to drive the drill rod 501 downward.

[0034] In this embodiment of the present invention, the feed mechanism includes a lead screw II 505, a stepper motor III 508, a gear transmission mechanism 509, and a sealing cover III 510. The upper and lower ends of lead screw II 505 are rotatably connected to the top cover 512 and the bottom cover 515, respectively, via rolling bearings, and the upper end of lead screw II 505 is sealed by sealing cover III 510. Stepper motor III 508 is disposed inside the top cover 512, and its output end is connected to lead screw II 505 via gear transmission mechanism 509. The motor frame 506 is threadedly connected to lead screw II 505. The stepper motor III 508 drives lead screw II 505 to rotate via the gear transmission mechanism 509, thereby driving the motor frame 506 to move upward and downward, with guide rods II 514 serving as guides.

[0035] like Figures 6-7 As shown, in this embodiment of the present invention, the drill change cabin 6 includes a stepper motor IV 601, a turntable cabin 606, a cover 607, and a turntable frame. The cover 607 is mounted on the top of the turntable cabin 606. The turntable frame is rotatably mounted within the turntable cabin 606. The turntable frame is circumferentially provided with multiple spare drill sleeve positions 605 and multiple spare drill rod positions 611. The stepper motor IV 601 is mounted on the bottom of the turntable cabin 606, with its output end connected to the turntable frame. The stepper motor IV 601 is used to drive the turntable frame to rotate. A connecting plate 612 is provided on the lower outer portion of the turntable cabin 606, which is connected to the swing arm 301.

[0036] In an embodiment of the present invention, the turntable frame includes a bottom drill-changing turntable 602, a rotary shaft II 603, a top drill-changing turntable 608 and a top fixed shaft 609, wherein the rotary shaft II 603 and the top fixed shaft 609 are respectively installed on the bottom and the cover 607 of the turntable cabin 606, and the top fixed shaft 609 is coaxial with the rotary shaft II 603; the bottom drill-changing turntable 602 is rotatably installed on the rotary shaft II 603 and is sealed by the bottom rotary end cover 604; the top drill-changing turntable 608 is rotatably installed on the top fixed shaft 609 and is sealed by the fixed end cover 610; a plurality of positioning holes are correspondingly provided on the top drill-changing turntable 608 and the bottom drill-changing turntable 602 along the circumferential direction, thereby forming a spare drill sleeve position 605 and a spare drill rod position 611.

[0037] Furthermore, the cover 607 is provided with a drill changing port corresponding to the spare drill sleeve position 605 or the spare drill rod position 611 .

[0038] In an embodiment of the present invention, a rocking mechanism 3 is used to control the rocking of the drill exchange cabin 6 to the corresponding workstation, a lifting mechanism 4 is used to control the ascent and descent of the drilling mechanism 5, an outer frame 2 is mounted outside the rocking mechanism 3 and the lifting mechanism 4, and is used to reduce lunar dust contamination of the rocking mechanism 3 and the lifting mechanism 4, the drilling mechanism 5 is connected to the lifting mechanism 4 via a lifting arm 404, and is used to control the drilling mechanism 5 to drill and sample lunar soil, and the drill exchange cabin 6 is connected to the rocking mechanism 3 via a rocking arm 301, and controls the rotation of the drill rod 501 and the drill sleeve 502 so as to cooperate with the drilling mechanism 5 to achieve smooth installation and removal of different drill rods and drill sleeves. The present invention, through the design of the rocking mechanism, the lifting mechanism, the drilling mechanism, and the drill exchange cabin, is intended to achieve rapid installation and removal of different drill rods and drill sleeves for lunar surface sampling drilling tools.

[0039] The present invention provides a surface lunar soil sampling drill replacement device, the working principle of which is as follows:

[0040] (1) Disassembly process: Figure 8 As shown, the operation sequence for disassembling the drill tool of a surface lunar soil sampling drill and drill replacement device provided by the present invention is listed.

[0041] Sequence I: The rocking mechanism 3 and the lifting mechanism 4 are both in standby mode, the drilling mechanism 5 is in the lower limit position, and the drilling chamber 6 is in the left limit position. Figure 8 (a)

[0042] Sequence II: The rocking mechanism 3 remains in standby mode, the drilling cabin 6 continues to be in the left limit position, and the lifting mechanism 4 works to make the drilling mechanism 5 in the upper limit position. Figure 8 (b)

[0043] Sequence III: The lifting mechanism 4 remains in standby mode, the drilling mechanism 5 continues to be in the upper limit position, and the rocking mechanism 3 works to make the drill chamber 6 in the right limit position. Figure 8 (c)

[0044] Sequence IV: The lifting mechanism 4 remains standby, the drilling mechanism 5 continues to be in the upper limit position, the swing mechanism 3 remains standby, the drill changing cabin 6 continues to be in the right limit position, the step motor IV 601 works to align the standby drill sleeve position 605 with the drill sleeve 502, then the step motor III 508 works to drive the screw rod II 505 to rotate, so that the motor frame 506 is lowered, and then the drill sleeve 502 is lowered until the drill sleeve 502 is completely installed in the standby drill sleeve position 605, as shown in Figure 8 (d);

[0045] Sequence V: The lifting mechanism 4 remains standby, the drilling mechanism 5 continues to be in the upper limit position, the swing mechanism 3 remains standby, the drill changing cabin 6 continues to be in the right limit position, the step motor III 508 works to drive the screw rod II 505 to rotate, so that the motor frame 506 is raised until it is in the initial position, as shown in Figure 8 (e);

[0046] Sequence VI: The lifting mechanism 4 remains standby, the drilling mechanism 5 continues to be in the upper limit position, the swing mechanism 3 remains standby, the drill changing cabin 6 continues to be in the right limit position, the step motor IV 601 works to align the standby drill rod position 611 with the drill rod 501, as shown in Figure 8 (f);

[0047] Sequence VII: The lifting mechanism 4 remains standby, the drilling mechanism 5 continues to be in the upper limit position, the swing mechanism 3 remains standby, the drill changing cabin 6 continues to be in the right limit position, the step motor III 508 works to drive the screw rod II 505 to rotate, so that the motor frame 506 is lowered, and then the drill rod 501 is lowered until the drill rod 501 is completely installed in the standby drill rod position 611, as shown in Figure 8 (g);

[0048] Sequence VIII: The lifting mechanism 4 remains standby, the drilling mechanism 5 continues to be in the upper limit position, the swing mechanism 3 remains standby, the drill changing cabin 6 continues to be in the right limit position, the step motor III 508 works to drive the screw rod II 505 to rotate, so that the motor frame 506 is raised until it is in the initial position, as shown in Figure 8 (h);

[0049] Sequence IX: The lifting mechanism 4 remains standby, the drilling mechanism 5 continues to be in the upper limit position, the swing mechanism 3 works, so that the drill changing cabin 6 continues to be in the left limit position, as shown in Figure 8 (i);

[0050] Sequence X: The lifting mechanism 4 works to lower the drilling mechanism 5 until it is in the lower limit position, the swing mechanism 3 remains standby, the drill changing cabin 6 continues to be in the right limit position, as shown in Figure 8 (j);

[0051] Thus, the entire drill disassembly operation sequence is completed.

[0052] (2) Assembly process: the assembly process adopts the reverse operation sequence of the disassembly process, that is, the sequence X-sequence I of the disassembly process is sequentially executed.

[0053] (3) Drill replacement process: the drill replacement process includes the disassembly process and the assembly process, that is, the disassembly process is executed first and then the assembly process is executed.

[0054] (4) Multi-stage assembly process: multi-stage drill assembly can be realized by increasing the lifting stroke of the lifting mechanism 4, that is, the assembly process is repeatedly executed.

[0055] (5) Multi-stage disassembly process: multi-stage drill disassembly can be realized by increasing the lifting stroke of the lifting mechanism 4, that is, the disassembly process is repeatedly executed.

[0056] (6) Compound operation process: more complex compound operation processes can be realized by alternately or repeatedly executing the disassembly process or the assembly process.

[0057] The present application provides a kind of surface lunar soil sampling drill drill replacement device, by designing swing mechanism and lifting mechanism realizes that drilling mechanism and drill replacement cabin cooperate with each other, by executing pre-set action sequence program can smoothly complete drill disassembly, drill assembly, drill replacement, multi-stage drill disassembly, multi-stage drill assembly, composite operation process and other various task requirements such as drill assembly. In addition, if the sampling drill replacement device is modified, it can be applied to asteroid, comet, Mars and other sampling tasks.

[0058] The above only describes the embodiments of the present application, and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, extension, etc. within the spirit and principles of the present application are included in the protection scope of the present application.

Claims

1. A surface layer lunar soil sampling drill exchange drill apparatus, characterized by, The device comprises a base (1), an outer frame (2), a swing mechanism (3), a lifting mechanism (4), a drilling mechanism (5) and a drill changing cabin (6), wherein the swing mechanism (3) and the lifting mechanism (4) are installed on the base (1), the outer frame (2) is installed outside the swing mechanism (3) and the lifting mechanism (4), the drilling mechanism (5) is connected with the lifting mechanism (4), and the drill changing cabin (6) is connected with the swing mechanism (3); when the drill changing cabin (6) swings to the lower side of the drilling mechanism (5), the drilling mechanism (5) cooperates with the drill changing cabin (6) to realize the drill changing process. The drill changing cabin (6) comprises a stepping motor IV (601), a rotating disc cabin (606), a cover (607) and a rotating disc frame, wherein the cover (607) is arranged on the top of the rotating disc cabin (606), the rotating disc frame is rotatably arranged in the rotating disc cabin (606), a plurality of spare drill sleeve positions (605) and a plurality of spare drill rod positions (611) are arranged on the rotating disc frame in the circumferential direction; the stepping motor IV (601) is arranged on the bottom of the rotating disc cabin (606) and connected with the rotating disc frame, and the stepping motor IV (601) is used for driving the rotating disc frame to rotate. The rotating disc frame comprises a bottom drill changing rotating disc (602), a rotary shaft II (603), a top drill changing rotating disc (608) and a top fixed shaft (609), wherein the rotary shaft II (603) and the top fixed shaft (609) are respectively installed on the bottom of the rotating disc cabin (606) and the cover (607), and the top fixed shaft (609) is coaxial with the rotary shaft II (603); the bottom drill changing rotating disc (602) is rotatably installed on the rotary shaft II (603), and the top drill changing rotating disc (608) is rotatably installed on the top fixed shaft (609). A plurality of positioning holes are correspondingly arranged on the top drill changing rotating disc (608) and the bottom drill changing rotating disc (602) in the circumferential direction, so as to form the spare drill sleeve positions (605) and the spare drill rod positions (611). The cover (607) is provided with a drill changing opening corresponding to the spare drill sleeve positions (605) or the spare drill rod positions (611).

2. The lunar surface soil sampling drill exchange device according to claim 1, characterized in that, The swing mechanism (3) comprises a swing arm (301), a rotary shaft I (303), a sealing cover I (305) and a rotary drive mechanism I, wherein the rotary shaft I (303) is arranged in the base (1) in the vertical direction and is rotatable, the sealing cover I (305) is installed on the upper end of the outer frame (2) and is used for sealing the rotary shaft I (303); one end of the swing arm (301) is fixedly connected with the rotary shaft I (303), and the other end extends to the outside of the base (1) in the horizontal direction and is connected with the drill changing cabin (6); the rotary drive mechanism I is arranged in the base (1) and connected with the rotary shaft I (303), and the rotary drive mechanism I drives the rotary shaft I (303) to rotate, so as to drive the swing arm (301) to realize the swing action.

3. The lunar surface soil sampling drill exchange device of claim 2, wherein, The rotation driving mechanism I comprises a worm I (302), a worm wheel I (304), a bearing seat I (306) and a step motor I (307), wherein the worm wheel I (304) is installed at the lower part of the rotation shaft I (303), the worm I (302) is installed in the base (1) through the bearing seat I (306) and is engaged with the worm wheel I (304); the step motor I (307) is installed in the base (1) and the output end is connected with the worm I (302), and the step motor I (307) is used for driving the worm I (302) to rotate.

4. The lunar surface soil sampling drill exchange device of claim 1, wherein, The lifting mechanism (4) comprises a sealing cover II (401), a guide rod I (402), a lead screw I (403), a lifting arm (404) and a rotation driving mechanism II, wherein the guide rod I (402) and the lead screw I (403) are arranged in the vertical direction in the outer frame (2), and the lead screw I (403) is rotatable; the sealing cover II (401) is installed at the upper end of the outer frame (2) and is used for sealing the lead screw I (403); one end of the lifting arm (404) is threadedly connected with the lead screw I (403) and is slidably connected with the guide rod I (402), and the other end of the lifting arm (404) extends to the outside of the outer frame (2) in the horizontal direction and is connected with the drilling mechanism (5); the rotation driving mechanism II is arranged in the base (1) and is connected with the lead screw I (403), and the rotation driving mechanism II drives the lead screw I (403) to rotate, so as to drive the lifting arm (404) to perform the lifting action.

5. The lunar surface soil sampling drill exchange device of claim 4, wherein, The rotation driving mechanism II comprises a worm II (406), a worm wheel II (407), a bearing seat II (408) and a step motor II (405), wherein the worm wheel II (407) is installed at the lower end of the lead screw I (403), the worm II (406) is installed in the base (1) through the bearing seat II (408) and is engaged with the worm wheel II (407); the step motor II (405) is installed in the base (1) and the output end is connected with the worm II (406).

6. The lunar surface soil sampling drill exchange device of claim 1, wherein, The drilling mechanism (5) comprises a drill rod (501), a drill sleeve (502), an adapter (503), an extension rod (504), a motor rack (506), a servo motor (507), a handle (511), a top cover (512), a drilling machine shell (513), a guide rod II (514), a bottom cover (515) and a feeding mechanism, wherein the top cover (512) and the bottom cover (515) are arranged at the top and the bottom of the drilling machine shell (513) respectively, the upper end of the drilling machine shell (513) is provided with the handle (511) on both sides; The guide rod II (514) is arranged in the vertical direction in the drilling machine shell (513), the motor frame (506) is in sliding connection with the guide rod II (514), the servo motor (507) is arranged on the motor frame (506), and the output end is connected with the upper end of the elongated rod (504), the lower end of the elongated rod (504) is connected with the drill rod (501) and the drill sleeve (502) through the adapter (503), and the drill sleeve (502) is arranged outside the drill rod (501); the feeding mechanism is arranged in the drilling machine shell (513) and is connected with the motor frame (506), and the feeding mechanism is used for driving the drill rod (501) to feed downward.

7. The lunar surface soil sampling drill exchange device of claim 6, wherein, The feeding mechanism comprises a lead screw II (505), a stepping motor III (508), a gear transmission mechanism (509) and a sealing cover III (510), wherein the upper and lower ends of the lead screw II (505) are rotatably connected with the top cover (512) and the bottom cover (515) respectively, and the upper end of the lead screw II (505) is sealed through the sealing cover III (510); the stepping motor III (508) is arranged on the inner side of the top cover (512), and the output end is connected with the lead screw II (505) through the gear transmission mechanism (509); and the motor frame (506) is in screw connection with the lead screw II (505).

Images