Handheld dual-mode lunar soil coring device

Abstract

The present application provides a handheld dual-mode lunar soil coring device, including a frame, a first shell, a first drive structure, a bearing member, an impact mechanism, a vibration structure, and a second drive structure. The first shell, the first drive structure, and the second drive structure are mounted on the frame. A first accommodating chamber with open ends is provided in the first shell. The second drive structure is used to drive the first shell to rotate. The bearing member is installed in the first accommodating chamber and is used to connect a coring tool and transmit impact force to the coring tool. The impact mechanism is connected to the first drive structure, and the impact mechanism is used to impact the bearing member. The vibration structure is connected to the first drive structure and is used to drive the bearing member to vibrate. The handheld dual-mode lunar soil coring device of the embodiment of the present application can realize dual-mode coring of impact penetration and rotary drilling, can improve the sampling depth and the sampling efficiency of the sampling tube, can guarantee the original stratification information of the lunar soil to the greatest extent, and achieve the purpose of deep coring.

Description

Technical Field

[0001] The present application belongs to the field of lunar soil sampling technology, and more specifically, to a handheld dual-mode lunar soil coring device. Background Art

[0002] The moon is the closest extraterrestrial body to the earth and has rich mineral resources. Sampling, detection and analysis of lunar soil or lunar rock samples can obtain information about the soil structure and mineral elements of the moon, paving the way for the development of lunar resource mining projects. Therefore, it is one of the important projects in the manned lunar mission for astronauts to obtain lunar soil profile samples with original stratification information on the lunar surface. At present, there are two ways to obtain lunar soil samples with stratification information: one is impact penetration sampling; the other is rotary drilling sampling. The impact penetration method has the significant advantage of good retention of sample stratification information, but this method can only be applied to the sampling of relatively loose lunar soil layers, and cannot penetrate into dense lunar soil or hard lunar rocks. Moreover, under the action of low-frequency impact, the lunar soil particles near the sampling tube are squeezed and dense to produce a force chain (the propagation path of the force between particles), which increases the friction between the lunar soil particles and the surface of the sampling tube, increases energy consumption and hinders the collection of samples. The rotary drilling method has strong rock breaking ability and high sampling efficiency, and can preserve samples with certain bedding information. However, the rotary motion of the drill rod mixes the sample particles near the inner wall of the drill rod, and the original bedding information cannot be well preserved. The existing lunar soil coring device cannot simultaneously ensure the original bedding information of the lunar soil, improve sampling efficiency, and increase sampling depth. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a handheld dual-mode lunar soil coring device that can be held by astronauts, so as to solve the technical problems existing in the prior art that it is impossible to simultaneously ensure the original stratification information of the lunar soil, improve the sampling efficiency and increase the sampling depth.

[0004] To achieve the above purpose, the technical solution adopted in this application is to provide a handheld dual-mode lunar soil coring device, including:

[0005] frame;

[0006] A first shell is mounted on the frame, wherein a first accommodating cavity with two ends being open is provided in the first shell;

[0007] A bearing member installed in the first accommodating cavity, the bearing member is used to connect the coring tool and transmit the impact force to the coring tool and drive the coring tool to rotate;

[0008] An impact mechanism, one end of which is connected to the frame and the other end of which extends into the first housing, and the impact mechanism is used to impact the receiving member along an impact direction;

[0009] A vibration structure installed in the first accommodating cavity, one end of the vibration structure is connected to the bearing member, and is used to drive the bearing member to vibrate along the impact direction;

[0010] A first driving structure, mounted on the frame, for driving the impact mechanism to impact the receiving member and drive the vibration structure to vibrate;

[0011] The second driving structure is installed on the frame and is used to drive the first shell to rotate.

[0012] The working modes of the handheld dual-mode lunar soil coring device include impact mode and rotation mode.

[0013] Impact mode: the first driving structure drives the impact mechanism to impact the receiving member, and drives the vibration structure to cause the receiving member to vibrate;

[0014] Rotation mode: it can be rotational vibration, the second driving structure drives the first shell to rotate, the first shell drives the bearing member to rotate, the first driving structure is not started, that is, the first vibrating member is stationary, the second vibrating member rotates, the second vibrating member rubs against the first vibrating member to generate vibration, and the bearing member rotates and vibrates;

[0015] It can also be rotary impact vibration, where the first drive structure and the second drive structure operate simultaneously to perform rotary-impact drilling, which greatly improves the sampling efficiency.

[0016] In some embodiments, the impact mechanism comprises:

[0017] an elastic force storage member, installed in the first accommodating cavity; and

[0018] A push ring, arranged between the elastic force storage member and the bearing member;

[0019] The first driving structure is used to drive the ejection ring to press against the elastic force storage member to store force and then release the ejection ring.

[0020] In some embodiments, the first driving structure includes:

[0021] A rotating shaft, one end of which is connected to the vibration structure;

[0022] A first rotator drives the rotating shaft to rotate, wherein the first rotator is mounted on the housing;

[0023] A driving shaft, used for driving the ejection ring to press against the elastic force storage member; and

[0024] A guide sleeve, wherein the guide sleeve is provided with a guide surface, wherein the guide surface includes a helical surface and a transition surface, wherein the helical surface is used to cooperate with the drive shaft to guide the push ring to move along the axial direction of the rotating shaft, wherein two ends of the helical surface have a height difference along the axial direction of the rotating shaft, and the transition surface extends from one end of the helical surface away from the elastic force storage member toward one end of the elastic force storage member, and the length of the transition surface along the axial direction of the rotating shaft is equal to the height difference;

[0025] The guide sleeve is arranged on one of the ejection ring and the rotating shaft, and the drive shaft is arranged on the other of the ejection ring and the rotating shaft.

[0026] In some embodiments, a slide groove is provided on the guide sleeve, and the guide surface is the side of the slide groove close to the elastic force storage member; or, the guide surface is the end surface of the guide sleeve facing away from the elastic force storage member.

[0027] In some embodiments, there are multiple guide surfaces, which are arranged in a ring on the guide sleeve and are connected end to end; or, there is one guide surface, and one end of the transition surface close to the elastic force storage piece is connected to one end of the spiral surface close to the elastic force storage piece.

[0028] In some embodiments, the impact mechanism also includes an impact piece, which is arranged between the push ring and the supporting piece. The impact piece is hollow inside, and the rotating shaft passes through the impact piece and is connected to the vibration structure. An arc-shaped groove is provided at one end of the supporting piece close to the impact piece, and an arc-shaped protrusion corresponding to the position of the arc-shaped groove is provided on the impact piece for adapting to impact the arc-shaped groove.

[0029] In some embodiments, the second housing is further included, wherein a second housing is provided with a second accommodating cavity with two open ends, one end of the second housing is fixedly connected to the frame, and the other end extends into the first accommodating cavity, and the second housing is sleeved on the outside of the impact mechanism;

[0030] The second shell is provided with a first long slot hole, the length direction of which is consistent with the impact direction, and the impact member is provided with a first limiting member, one end of which extends into the first long slot hole.

[0031] In some embodiments, a first bearing seat is disposed at one end of the first housing away from the bearing member, a first bearing is disposed inside the first bearing, and an inner ring of the first bearing is sleeved and connected to the second housing;

[0032] The frame is provided with a second bearing seat, the second bearing seat is provided with a second bearing, and the inner ring of the second bearing is sleeved and connected to the first housing.

[0033] In some embodiments, a second long slot hole is provided on the first shell, the length direction of the second long slot hole is the impact direction, a second limiting member is provided on the supporting member, and one end of the second limiting member extends into the second long slot hole.

[0034] In some embodiments, the second driving structure includes:

[0035] A second rotator, mounted on the frame;

[0036] A transmission shaft connected to the second rotator, the second rotator is used to drive the transmission shaft to rotate around the impact direction;

[0037] A transmission gear, wherein a first through hole is provided in the middle thereof, the transmission shaft passes through the first through hole, and the inner side of the transmission gear is connected to the transmission shaft;

[0038] A driving gear is meshed with the transmission gear, a second through hole is arranged in the middle of the driving gear, the first shell passes through the second through hole, and the inner side of the driving gear is connected with the first shell.

[0039] In some embodiments, the vibrating structure comprises:

[0040] A first vibrating member, one end of which is fixedly connected to the first driving structure, and the other end of which is provided with a first tooth portion, the first tooth portion is sawtooth-shaped, and the first driving structure is used to drive the first vibrating member to rotate along the impact direction;

[0041] The second vibrating member has one end fixedly connected to the bearing member and the other end provided with a second tooth portion meshing with the first tooth portion, wherein the second tooth portion is sawtooth-shaped.

[0042] In some embodiments, a coring interface for connecting a coring tool is provided at one end of the receiving member away from the first driving structure.

[0043] In some embodiments, a third bearing seat and a fourth bearing seat are provided on the frame, a third bearing is provided in the third bearing seat, an inner ring of the third bearing is sleeved and connected to the rotating shaft, a fourth bearing is provided in the fourth bearing seat, and an inner ring of the fourth bearing is sleeved and connected to the transmission shaft.

[0044] In some embodiments, a first bearing cover is provided on the first bearing seat, and a second bearing cover is provided on the second bearing seat. The first bearing cover is annular and sleeved on the second shell. The first bearing cover covers the first bearing seat. The second bearing cover is annular and sleeved on the first shell. The second bearing cover covers the second bearing seat.

[0045] In some embodiments, a sealing member is disposed at one end of the first shell away from the first rotator, the sealing member is annular, and the sealing member is sleeved on the coring interface.

[0046] In some embodiments, the rack includes a plurality of packaging plates, and each packaging plate is packaged in a rectangular parallelepiped shape.

[0047] In some embodiments, two handheld brackets are provided on opposite sides of the frame for convenient holding by human hands.

[0048] The beneficial effect of the handheld dual-mode lunar soil coring device provided in the embodiment of the present application is that: compared with the prior art, the handheld dual-mode lunar soil coring device in the embodiment of the present application, the first driving structure 3 and the second driving structure 7 can operate separately or simultaneously, and can realize impact penetration coring and rotary drilling coring. The dual-mode coring can ensure the original stratification information of the lunar soil, improve the sampling efficiency and increase the sampling depth. The first driving structure is set to drive the impact mechanism and the vibration structure, the impact mechanism impacts the bearing member, the vibration structure drives the bearing member to vibrate, the bearing member is connected to the coring tool (sampling tube), and the impact force is transmitted to the coring tool, and the composite form of vibration and impact is used to destroy the generation of the force chain (the propagation path of the force between particles) in the sampling tube, so that the lunar soil near the wall of the sampling tube becomes loose, reducing the friction resistance between the lunar soil particles and the tube wall, thereby improving the sampling depth and the sampling efficiency of the sampling tube. When sampling a relatively loose lunar soil layer, an impact penetration sampling method is adopted to ensure the original stratification information of the lunar soil to the greatest extent. If they encounter a dense lunar soil layer or hard lunar rock that cannot be penetrated, the astronauts can start the second drive structure of the coring device. The second drive structure drives the first shell to rotate, driving the bearing member to rotate, and the penetration sampling tube (coring tool) is replaced by the spiral drill rod (coring tool), thereby realizing the cutting and drilling action of the lunar soil or lunar rock to achieve the purpose of deep coring. When the sampling depth is reached, the astronauts lift the dual-mode coring device upwards, and the bearing member is separated from the impact mechanism due to gravity, so that the sample in the sampling tube will not fall off due to vibration and other reasons. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0050] Figure 1 A schematic diagram of the structure of a handheld dual-mode lunar soil coring device provided in an embodiment of the present application;

[0051] Figure 2A cross-sectional view of a handheld dual-mode lunar soil coring device provided in an embodiment of the present application;

[0052] Figure 3 A schematic diagram of the explosion structure of a handheld dual-mode lunar soil coring device provided in an embodiment of the present application;

[0053] Figure 4 A schematic diagram of the structure of an impact member of a handheld dual-mode lunar soil coring device provided in an embodiment of the present application;

[0054] Figure 5 A schematic structural diagram of a first guide sleeve of a handheld dual-mode lunar soil coring device provided in an embodiment of the present application;

[0055] Figure 6 A schematic diagram of the structure of a second guide sleeve of the handheld dual-mode lunar soil coring device provided in an embodiment of the present application;

[0056] Figure 7 A schematic structural diagram of a first connection method of a rotating shaft, a driving shaft, a guide sleeve and a push ring of a handheld dual-mode lunar soil coring device provided in an embodiment of the present application;

[0057] Figure 8 A schematic diagram of the structure of a second connection method of the rotating shaft, the driving shaft, the guide sleeve and the ejection ring of the handheld dual-mode lunar soil coring device provided in an embodiment of the present application;

[0058] Fig. 9 A schematic diagram of the structure of the vibration structure of the handheld dual-mode lunar soil coring device provided in an embodiment of the present application;

[0059] Fig.10 A schematic diagram of the deployment of a first guide sleeve of the handheld dual-mode lunar soil coring device provided in an embodiment of the present application;

[0060] Fig.11 A schematic diagram of the deployment of the second guide sleeve of the handheld dual-mode lunar soil coring device provided in an embodiment of the present application;

[0061] Fig.12 A schematic diagram of the deployment of the third guide sleeve of the handheld dual-mode lunar soil coring device provided in an embodiment of the present application;

[0062] Fig.13 A schematic diagram of the operation of the handheld dual-mode lunar soil coring device provided in an embodiment of the present application when using a sampling tube;

[0063] Fig.14 A schematic diagram of the operation of the handheld dual-mode lunar soil coring device provided in an embodiment of the present application when using a spiral drill rod.

[0064] Among them, the reference numerals in the figure are:

[0065] 1. Frame; 11. Second bearing seat; 111. Second bearing; 112. Second bearing cover; 12. Third bearing seat; 121. Third bearing; 13. Fourth bearing seat; 131. Fourth bearing; 14. Packaging plate; 15. Hand-held bracket;

[0066] 2. first housing; 21. first accommodating cavity; 22. first bearing seat; 221. first bearing; 222. first bearing cover; 23. second long slot hole;

[0067] 3. first driving structure; 31. rotating shaft; 32. first rotator; 33. driving shaft; 331. roller; 34. guide sleeve; 341. guide surface; 3411. spiral surface; 3412. transition surface; 342. slide groove;

[0068] 4. Bearing member; 41. Arc groove; 42. Second limiting member; 43. Coring interface; 431. Sealing member;

[0069] 5. Impact mechanism; 51. Elastic force storage member; 52. Pushing ring; 53. Impact member; 531. Arc-shaped protrusion; 532. First position-limiting member; 54. Second housing; 541. Second accommodating cavity; 542. First long slot;

[0070] 6. Vibration structure; 61. First vibrating member; 611. First tooth portion; 62. Second vibrating member; 621. Second tooth portion;

[0071] 7. Second driving structure; 71. Second rotator; 72. Transmission shaft; 73. Transmission gear; 731. First through hole; 74. Driving gear; 741. Second through hole;

[0072] 8. Connecting rod;

[0073] 91. Sampling tube; 92. Auger rod. DETAILED DESCRIPTION

[0074] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0075] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0076] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0077] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0078] References to "one embodiment", "some embodiments" or "an embodiment" described in the specification of this application mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in some other embodiments", "in some other embodiments", etc., which appear at different places in this specification, do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. In addition, in one or more embodiments, particular features, structures or characteristics may be combined in any suitable manner.

[0079] Please also read Figure 1 , Figure 2 and Figure 3, the handheld dual-mode lunar soil coring device provided in the embodiment of the present application is now described. The handheld dual-mode lunar soil coring device includes a frame 1, a first shell 2, a first driving structure 3, a bearing member 4, an impact mechanism 5, a vibration structure 6 and a second driving structure 7. The first shell 2 is mounted on the frame 1, and a first accommodating chamber 21 is provided inside the first shell 2, and both ends of the first accommodating chamber 21 are open. The first driving structure 3 is mounted on the frame 1. The bearing member 4 is mounted in the first accommodating chamber 21, and the bearing member 4 is connected to the first shell 2. The bearing member 4 is used to connect the coring tool, transmit the impact force to the coring tool and drive the coring tool to rotate. One end of the impact mechanism 5 is connected to the frame 1, and the other end extends into the first accommodating chamber 21. The impact mechanism 5 is connected to the first driving structure 3, and the impact mechanism 5 is used to impact the bearing member 4 along the impact direction. The vibration structure 6 is mounted in the first accommodating chamber 21, and one end of the vibration structure 6 is connected to the first driving structure 3, and the other end is connected to the bearing member 4, which is used to drive the bearing member 4 to vibrate along the impact direction. The first driving structure 3 and the second driving structure 7 can operate separately or simultaneously.

[0080] In the handheld dual-mode lunar soil coring device of the embodiment of the present application, the first driving structure 3 and the second driving structure 7 can operate separately or simultaneously. The first driving structure 3 is set to drive the impact mechanism 5 and the vibration structure 6. The impact mechanism 5 impacts the bearing member 4, and the vibration structure 6 drives the bearing member 4 to vibrate. The bearing member 4 is connected to the coring tool (sampling tube 91) and transmits the impact force to the coring tool. The composite form of vibration and impact is used to destroy the generation of the force chain (the propagation path of the force between particles) in the sampling tube 91, so that the lunar soil near the wall of the sampling tube becomes loose, reducing the friction resistance between the lunar soil particles and the tube wall, thereby improving the sampling depth and the sampling efficiency of the sampling tube. When sampling a relatively loose lunar soil layer, an impact penetration sampling method is used to ensure the original stratification information of the lunar soil to the greatest extent. If the lunar soil layer with a high density or the lunar rock with a hard surface cannot be penetrated, the astronaut can start the second driving structure 7 of the coring device, and the second driving structure 7 drives the first shell 2 to rotate, driving the bearing member 4 to rotate, and the penetration sampling tube 91 (coring tool) is replaced by the spiral drill rod 92 (coring tool), thereby realizing the cutting and drilling action of the lunar soil or lunar rock, and achieving the purpose of deep coring. When the sampling depth is reached, the astronaut lifts the dual-mode coring device upward, and the bearing member 4 is separated from the impact mechanism 5 due to gravity, so that the sample in the sampling tube 91 will not fall off due to vibration or other reasons.

[0081] The working modes of the handheld dual-mode lunar soil coring device include impact mode and rotation mode.

[0082] Impact mode: the first driving structure 3 drives the impact mechanism 5 to impact the receiving member 4, and drives the vibration structure 6 to drive the receiving member 4 to vibrate.

[0083] Rotation mode: It can be rotational vibration. The second driving structure 7 drives the first shell 2 to rotate, and the first shell 2 drives the supporting member 4 to rotate. The first driving structure 3 is not started, that is, the first vibrating member 61 is stationary, the second vibrating member 62 rotates, and the second vibrating member 62 rubs against the first vibrating member 61 to generate vibration, and the supporting member 4 rotates and vibrates at the same time.

[0084] It can also be rotary impact vibration, where the first drive structure 3 and the second drive structure 7 operate simultaneously to perform rotary-impact drilling, which greatly improves the sampling efficiency.

[0085] In some embodiments, see Figure 2 and Figure 3 , the impact mechanism 5 includes an elastic force storage member 51 and a push-up ring 52. The elastic force storage member 51 is installed in the first accommodating chamber 21 (specifically. One end of the elastic force storage member 51 is installed on the frame 1, and the other end extends into the second accommodating chamber 541 of the second shell 54). The push-up ring 52 is arranged between the elastic force storage member 51 and the supporting member 4. The first driving structure 3 is used to drive the push-up ring 52 to press the elastic force storage member 51 to release the push-up ring 52 after accumulating force. The push-up ring 52 can directly impact the supporting member 4, and the push-up ring 52 is used to squeeze the elastic force storage member 51 to complete the energy storage of the equipment and ensure the impact effect.

[0086] In some embodiments, see Figure 2 and Figure 3 and Figure 5 , the first driving structure 3 includes a rotating shaft 31, a first rotator 32, a driving shaft 33 and a guide sleeve 34. One end of the rotating shaft 31 is connected to the vibration structure 6, and the axial direction of the rotating shaft 31 is the impact direction. The first rotator 32 drives the rotating shaft 31 to rotate, and the first rotator 32 is installed on the shell. The driving shaft 33 is used to drive the push ring 52 to press against the elastic force storage member 51. A guide surface 341 is provided on the guide sleeve 34, and the guide surface 341 includes a spiral surface 3411 and a transition surface 3412. The spiral surface 3411 is used to cooperate with the driving shaft 33 to guide the push ring 52 to move along the axial direction of the rotating shaft 31. The two ends of the spiral surface 3411 have a height difference along the axial direction of the rotating shaft 31, and the transition surface 3412 extends from one end of the spiral surface 3411 away from the elastic force storage member 51 toward one end of the elastic force storage member 51, and the length of the transition surface 3412 along the axial direction of the rotating shaft 31 is equal to the height difference.

[0087] See also Figure 7 The guide sleeve 34 is disposed on the push ring 52, and the drive shaft 33 is disposed on the rotating shaft 31. The first rotator 32 drives the rotating shaft 31 to rotate, thereby driving the drive shaft 33 to rotate, and the drive shaft 33 slides on the guide surface 341. Since the two ends of the spiral surface 3411 have a height difference along the axial direction of the rotating shaft 31, when the drive shaft 33 slides on the guide surface 341, it will push the guide sleeve 34 to drive the push ring 52 to squeeze the elastic force storage member 51 to store force.

[0088] In another embodiment, see Figure 8 , the guide sleeve 34 is arranged on the rotating shaft 31, and the driving shaft 33 is arranged on the push ring 52. The first rotator 32 drives the rotating shaft 31 to rotate, thereby driving the guide sleeve 34 to rotate, and the driving shaft 33 slides on the guide surface 341. Since the two ends of the spiral surface 3411 have a height difference along the axial direction of the rotating shaft 31, when the driving shaft 33 slides on the guide surface 341, the guide surface 341 will push the driving shaft 33 to drive the push ring 52 to squeeze the elastic force storage member 51 to store force.

[0089] In some embodiments, see Figure 3 , Figure 6 , Figure 8 ,and Fig.12 , a slide groove 342 is provided on the guide sleeve 34, and the guide surface 341 is the side of the slide groove 342 close to the elastic force storage member 51. When the guide sleeve 34 is provided on the push-up ring 52 and the drive shaft 33 is provided on the rotating shaft 31, the slide groove 342 is located on the inner side of the guide sleeve 34, and one end of the drive shaft 33 extends into the slide groove 342. When the guide sleeve 34 is provided on the rotating shaft 31 and the drive shaft 33 is provided on the push-up ring 52, the slide groove 342 is located on the outer surface of the guide sleeve 34. The slide groove 342 is provided on the guide sleeve 34 to facilitate the guide sleeve 34 to act as an impact hammer away from the end of the elastic force storage member 51 to impact the receiving member 4.

[0090] In another embodiment, see Figure 3 and Figure 5 The guide surface 341 is the end surface of the guide sleeve 34 away from the elastic force storage member 51. One end of the drive shaft 33 abuts against the end surface of the guide sleeve 34 away from the elastic force storage member 51, and the guide surface 341 is the end surface of the guide sleeve 34 away from the elastic force storage member 51, which is easy to process.

[0091] In some embodiments, see Figure 3 , Figure 5 and Fig.11 There are multiple guide surfaces 341, and the multiple guide surfaces 341 are arranged in an annular manner on the guide sleeve 34, and the multiple guide surfaces 341 are connected end to end. The force accumulation is fast and the impact frequency is high.

[0092] In another embodiment, see Figure 3 , Figure 5 and Fig.10 , the guide surface 341 is one, see Figure 3 , Figure 5 and Figure 7 , one end of the transition surface 3412 close to the elastic force storage member 51 is connected to one end of the spiral surface 3411 close to the elastic force storage member 51. The force storage is more stable and the impact frequency is low.

[0093] In some embodiments, see Figure 3 and Figure 4The lunar soil coring device also includes an impact member 53, which is installed in the first accommodating chamber 21 (specifically, the impact member 53 is installed in the second accommodating chamber 541), and is arranged between the push ring 52 and the bearing member 4. The impact member 53 is hollow inside, and the rotating shaft 31 passes through the impact member 53 and is connected to the vibration structure 6. The bearing member 4 is provided with an arc groove 41, which is arranged at one end of the bearing member 4 close to the impact member 53. The impact member 53 is provided with an arc protrusion 531, which is arranged at a position corresponding to the arc groove 41, and the arc protrusion 531 is adapted to the size of the arc groove 41, and the arc protrusion 531 is used to impact the arc groove 41. When the impact member 53 impacts the bearing member 4 back and forth along the impact direction, the arrangement of the arc groove 41 and the arc protrusion 531 facilitates the positioning impact of the impact member 53, improves the accuracy of the impact, and can also increase the force-bearing area and ensure uniform force.

[0094] In some embodiments, see Figure 1 , Figure 2 and Figure 3 The handheld dual-mode lunar soil coring device further includes a second housing 54, in which a second accommodating chamber 541 is disposed, and both ends of the second accommodating chamber 541 are open. One end of the second housing 54 is fixedly connected to the frame 1, and the other end extends into the first accommodating chamber 21.

[0095] The second shell 54 is provided with a first long slot hole 542, the length direction of which is consistent with the impact direction. The impact member 53 is provided with a first limiter 532, one end of which extends into the first long slot hole 542. The first limiter 532 is provided to be limitedly connected in the first long slot hole 542 to ensure that the impact member 53 can only move back and forth along the impact direction, and to prevent the impact member 53 from being driven by the first driving structure 3 to rotate around the impact direction, thereby affecting the impact force. The second shell 54 is provided to separate the impact mechanism 5 from the first shell 2, so that the impact of the impact mechanism 5 on the impact bearing member 4 will not affect the rotation of the first shell 2, so that the first driving structure 3 and the second driving structure 7 can operate separately or simultaneously.

[0096] In some embodiments, see Figure 1 , Figure 2 and Figure 3 The first housing 2 is provided with a first bearing seat 22 at one end away from the bearing member 4, a first bearing 221 is provided inside the first bearing seat 221, an inner ring of the first bearing 221 is sleeved on the second housing 54, and the inner ring of the first bearing 221 is connected to the second housing 54. When the second driving structure 7 drives the first housing 2 to rotate through the transmission structure, the first housing 2 rotates relative to the second housing 54, and the first bearing 221 is provided between the first housing 2 and the second housing 54 to ensure the stability of the rotation of the first housing 2.

[0097] The frame 1 has a second bearing seat 11, in which a second bearing 111 is arranged, and the inner ring of the second bearing 111 is sleeved on the first housing 2, and the inner ring of the second bearing 111 is connected to the first housing 2 to ensure the stability of the rotation of the first housing 2. The outer ring of the first bearing 221 and the inner ring of the second bearing 111 are limited to ensure that the impact direction is fixed.

[0098] In some embodiments, see Figure 2 , Figure 3 , Figure 4 and Figure 5 A roller 331 is provided at one end of the driving shaft 33. The roller 331 is rotatably connected to the driving shaft 33, and the roller 331 rotates around the axial direction of the driving shaft 33. The roller 331 abuts against the guide surface 341. The driving shaft 33 drives the roller 331 to rotate around the axial direction of the rotating shaft 31. The guide surface 341 rubs against the outer ring of the roller 331, and drives the roller 331 to rotate around the axial direction of the driving shaft 33. The roller 331 is rollingly connected to the guide surface 341, which can reduce the friction between the roller 331 and the guide surface 341, improve the transmission efficiency of the first driving structure 3, and reduce the energy loss of the first driving structure 3.

[0099] In some embodiments, see Figure 2 and Figure 3 , a second long slot hole 23 is provided on the first shell 2, and the length direction of the second long slot hole 23 is consistent with the impact direction. A second limiting member 42 is provided on the bearing member 4, and one end of the second limiting member 42 extends into the second long slot hole 23. The second limiting member 42 is provided to be limitedly connected in the second long slot hole 23 to ensure that the bearing member 4 can only move back and forth along the impact direction, and to prevent the bearing member 4 from being driven by the vibration structure 6 to rotate along the impact direction, thereby affecting the impact force. At the same time, when the second driving structure 7 drives the first shell 2 to rotate through the transmission structure, the first shell 2 can drive the bearing member 4 to rotate around the impact direction, and the bearing member 4 is connected to the spiral drill rod (coring tool), thereby realizing the cutting and drilling action of the lunar soil or lunar rock, and achieving the purpose of deep coring.

[0100] In some embodiments, see Figure 2 , Figure 3 and Fig. 9The vibration structure 6 includes a first vibration member 61 and a second vibration member 62. One end of the first vibration member 61 is fixedly connected to the first driving structure 3. The first driving structure 3 drives the first vibration member 61 to rotate along the impact direction. The other end of the first vibration member 61 is provided with a first tooth portion 611, and the first tooth portion 611 is sawtooth-shaped or wavy. One end of the second vibration member 62 is fixedly connected to the bearing member 4. The other end of the second vibration member 62 is provided with a second tooth portion 621. The second tooth portion 621 is meshed with the first tooth portion 611, and the second tooth portion 621 is sawtooth-shaped or wavy. The first driving structure 3 drives the first vibration member 61 to rotate around the impact direction. When the teeth of the first tooth portion 611 move between the tooth grooves of the second tooth portion 621, the second vibration member 62 is driven to vibrate, and then the bearing member 4 is driven to vibrate. When the astronaut lifts the dual-mode coring device upward, the bearing member 4 is separated from the impact mechanism 5 due to gravity, so that the sample in the sampling tube 91 will not fall off due to vibration or other reasons. The first vibrating member 61 and the second vibrating member 62 are replaceable, and different vibration frequencies can be achieved according to different rotation speeds and the number of teeth of the first tooth portion 611 and the second tooth portion 621 .

[0101] In some embodiments, see Figure 1 , Figure 2 and Figure 3 , the second driving structure 7 includes a second rotator 71, a transmission shaft 72, a transmission gear 73 and a driving gear 74. The transmission shaft 72 is connected to the second driving structure 7, and the second driving structure 7 drives the transmission shaft 72 to rotate. A first through hole 731 is provided in the middle of the transmission gear 73, and the transmission shaft 72 passes through the first through hole 731. The inner side of the transmission gear 73 is connected to the transmission shaft 72. A shaft sleeve is provided on the transmission shaft 72, and the shaft sleeve abuts the transmission gear 73. The driving gear 74 is meshed with the transmission gear 73. A second through hole 741 is provided in the middle of the driving gear 74. The first housing 2 passes through the second through hole 741, and the inner side of the driving gear 74 is connected to the first housing 2. The second rotator 71 rotates, drives the transmission gear 73 to rotate through the transmission shaft 72, and then drives the driving gear 74 to rotate, and drives the first housing 2 to rotate. The first housing 2 rotates, and through the second limiting hole and the second limiting member 42, the second limiting hole is connected to the second limiting member 42, and the bearing member 4 is driven to rotate around the impact direction. A spiral drill rod 92 (coring tool) is connected to the receiving member 4 to achieve cutting and drilling of lunar soil or lunar rock. The first rotator 32 and the second rotator 71 can also be rotated simultaneously to achieve rotary-impact drilling.

[0102] In some embodiments, see Figure 1 , Figure 2 , Figure 3 , Fig.13 and Fig.14A coring interface 43 is provided at one end of the bearing member 4. The coring interface 43 is provided at the end of the bearing member 4 away from the first driving structure 3. The coring interface 43 is used to connect the coring tool (1, connecting rod 8 + sampling tube 91, 2, connecting rod 8 + auger rod 92) and transmit the impact force to the coring tool. The coring interface 43 is provided to facilitate the assembly and disassembly of the coring tool on the coring interface 43, facilitate the replacement of the coring tool, and increase the portability of the device.

[0103] One end of the connecting rod 8 is fixed on the coring interface 43, and the other end is connected to the sampling tube 91 or the auger rod 92. The connecting rod 8 is used as a connector and to increase the height of the equipment. Multiple connecting rods 8 can be connected to achieve multi-rod deep coring. The sampling tube 91 is hollow inside, and the end away from the connecting rod 8 is open, which is convenient for collecting lunar soil. The sampling tube 91 or the auger rod 92 is provided with a chip chamber near one end of the connecting rod. The chip chamber is open near one end of the connecting rod 8. The chip chamber is used to collect the debris generated by the sampling tube 91 penetrating the lunar soil, reducing the power consumption of the sampling process and preventing waste chips from hindering the lifting action.

[0104] In some embodiments, see Figure 1 , Figure 2 and Figure 3 The frame 1 is provided with a third bearing seat 12 and a fourth bearing seat 13. The third bearing seat 12 is provided with a third bearing 121. The rotating shaft 31 passes through the inner ring of the third bearing 121. The third bearing 121 is provided to cover the rotating shaft 31, which can ensure the rotation stability of the rotating shaft 31. The fourth bearing seat 13 is provided with a fourth bearing 131, and the transmission shaft 72 passes through the inner ring of the fourth bearing 131. The fourth bearing 131 is provided to cover the transmission shaft 72, which ensures the rotation stability of the transmission shaft 72.

[0105] In some embodiments, see Figure 1 , Figure 2 and Figure 3 The first bearing seat 22 is provided with a first bearing cap 222, and the second bearing seat 11 is provided with a second bearing cap 112. The first bearing cap 222 is annular and sleeved on the second housing 54. The second bearing cap 112 is annular and sleeved on the first housing 2. The first bearing cap 222 and the second bearing cap 112 are used for dustproof sealing.

[0106] In some embodiments, see Figure 1 , Figure 2 and Figure 3 A sealing member 431 is provided at one end of the first housing 2 away from the first rotator 32. The sealing member 431 is annular and is sleeved on the coring interface 43. The sealing member 431 is used for dustproof sealing.

[0107] In some embodiments, see Figure 1 , Figure 2and Figure 3 The frame 1 includes a plurality of packaging plates 14, each of which is connected by bolts, and each packaging plate 14 is packaged in a rectangular parallelepiped shape. The transmission gear 73, the driving gear 74, the first bearing 221, the second bearing 111, the third bearing 121 and the fourth bearing 131 are all packaged inside the frame 1. By providing the packaging plate 14 for packaging, the internal parts of the packaging plate 14 can be protected.

[0108] In some embodiments, see Figure 1 , Figure 2 and Figure 3 Two hand-held brackets 15 are arranged on opposite sides of the frame 1, and the hand-held brackets 15 are used for facilitating hand holding.

[0109] When the astronaut performs sampling operation on the lunar surface, he / she holds the dual-mode lunar coring device and assembles the connecting rod and the sampling tube at the coring interface 43 at the bottom. The astronaut provides downward penetration force for the coring device.

[0110] Working process: please refer to Figure 2 , Figure 3 , Fig.13 and Fig.14 , the astronaut provides downward penetration force for the coring device, starts the first rotator 32, drives the impact mechanism 5 and the vibration structure 6 to move, so that the first vibrating member 61 and the second vibrating member 62 above and below the vibration structure 6 are always in contact, so that during the rotation of the shaft 31, a certain high-frequency vibration will be continuously given to the sampling tube (coring tool), destroying the generation of the force chain (propagation path of the force between particles) in the sampling tube, and improving the sampling efficiency. The push ring 52 acts on the bearing member 4 by compressing the elastic potential energy of the elastic force storage member 51 and the gravity potential energy of itself and the impact member 53, so that the bearing member 4 and the sampling tube obtain downward acceleration and continuously complete the impact penetration action. When the sampling depth is reached, the astronaut lifts the dual-mode coring device upward, and the bearing member 4 is separated from the impact mechanism 5 due to gravity, so that the sample in the sampling tube 91 will not fall off due to vibration and other reasons. Subsequently, the astronaut replaces the sampling tube and assembles the connecting rod for deeper sampling.

[0111] When encountering a dense lunar soil layer and hard lunar rock, the dual-mode coring device cannot continue to perform penetration sampling. Astronauts can start the second rotator 71 and replace the sampling tube with an auger. The second rotator 71 and the first rotator 32 can operate separately or simultaneously. When operating simultaneously, the coring device performs rotary-impact drilling to achieve rock breaking and complete deep sampling.

[0112] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A handheld dual-mode lunar soil coring device, characterized in that: include: frame; A first shell is mounted on the frame, wherein a first accommodating cavity with two ends being open is provided in the first shell; A bearing member installed in the first accommodating cavity, the bearing member is used to connect the coring tool and transmit the impact force to the coring tool and drive the coring tool to rotate; An impact mechanism, one end of which is connected to the frame and the other end of which extends into the first housing, and the impact mechanism is used to impact the receiving member along an impact direction; A vibration structure installed in the first accommodating cavity, one end of the vibration structure is connected to the bearing member, and is used to drive the bearing member to vibrate along the impact direction; A first driving structure, mounted on the frame, for driving the impact mechanism to impact the receiving member and drive the vibration structure to vibrate; A second driving structure, mounted on the frame, for driving the first housing to rotate; The impact mechanism comprises: an elastic force storage member, installed in the first accommodating cavity; and A push ring, arranged between the elastic force storage member and the bearing member; The first driving structure is used to drive the ejection ring to press against the elastic force storage member to store force and then release the ejection ring; The first driving structure comprises: A rotating shaft, one end of which is connected to the vibration structure; A first rotator drives the rotating shaft to rotate, wherein the first rotator is mounted on the housing; A driving shaft, used for driving the ejection ring to press against the elastic force storage member; and A guide sleeve, wherein the guide sleeve is provided with a guide surface, wherein the guide surface includes a helical surface and a transition surface, wherein the helical surface is used to cooperate with the drive shaft to guide the push ring to move along the axial direction of the rotating shaft, wherein two ends of the helical surface have a height difference along the axial direction of the rotating shaft, and the transition surface extends from one end of the helical surface away from the elastic force storage member toward one end of the elastic force storage member, and the length of the transition surface along the axial direction of the rotating shaft is equal to the height difference; The guide sleeve is arranged on one of the ejection ring and the rotating shaft, and the drive shaft is arranged on the other of the ejection ring and the rotating shaft; The vibration structure comprises: A first vibrating member, one end of which is fixedly connected to the first driving structure, and the other end of which is provided with a first tooth portion, the first tooth portion is sawtooth-shaped, and the first driving structure is used to drive the first vibrating member to rotate along the impact direction; The second vibrating member has one end fixedly connected to the bearing member and the other end provided with a second tooth portion meshing with the first tooth portion, wherein the second tooth portion is sawtooth-shaped.

2. The handheld dual-mode lunar soil coring device according to claim 1, characterized in that: The guide sleeve is provided with a slide groove, and the guide surface is the side surface of the slide groove close to the elastic force storage member; or, the guide surface is the end surface of the guide sleeve away from the elastic force storage member.

3. The handheld dual-mode lunar soil coring device according to claim 1, characterized in that: There are multiple guiding surfaces, which are arranged in an annular manner on the guide sleeve and are connected end to end; or there is one guiding surface, and one end of the transition surface close to the elastic force storage member is connected to one end of the spiral surface close to the elastic force storage member.

4. The handheld dual-mode lunar soil coring device according to claim 2, characterized in that: The impact mechanism also includes an impact piece, which is arranged between the push ring and the supporting piece. The impact piece is hollow inside, and the rotating shaft passes through the impact piece and is connected to the vibration structure. An arc-shaped groove is arranged at one end of the supporting piece close to the impact piece, and an arc-shaped protrusion corresponding to the position of the arc-shaped groove is arranged on the impact piece to adapt to the impact of the arc-shaped groove.

5. The handheld dual-mode lunar soil coring device according to claim 4, characterized in that: It also includes a second housing, wherein a second housing is provided with a second accommodating cavity with two open ends, one end of the second housing is fixedly connected to the frame, and the other end extends into the first accommodating cavity, and the second housing is sleeved on the outside of the impact mechanism; The second shell is provided with a first long slot hole, the length direction of which is consistent with the impact direction, and the impact member is provided with a first limiting member, one end of which extends into the first long slot hole.

6. The handheld dual-mode lunar soil coring device according to any one of claims 1 to 5, characterized in that: A second long slot hole is provided on the first shell, and the length direction of the second long slot hole is the impact direction. A second limiting member is provided on the bearing member, and one end of the second limiting member extends into the second long slot hole.

7. The handheld dual-mode lunar soil coring device according to any one of claims 1 to 5, characterized in that: The second driving structure comprises: A second rotator, mounted on the frame; A transmission shaft connected to the second rotator, the second rotator is used to drive the transmission shaft to rotate around the impact direction; A transmission gear, wherein a first through hole is provided in the middle thereof, the transmission shaft passes through the first through hole, and the inner side of the transmission gear is connected to the transmission shaft; A driving gear is meshed with the transmission gear, a second through hole is arranged in the middle of the driving gear, the first shell passes through the second through hole, and the inner side of the driving gear is connected with the first shell.

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