Magazine type drilling tool single body and assembly for extraterrestrial directional order-preserving sampling and sampling method

Abstract

The invention relates to an extraterrestrial directional order-preserving sampling magazine type drilling tool single body, an extraterrestrial directional order-preserving sampling magazine type drilling tool assembly and a sampling method.The extraterrestrial directional order-preserving sampling magazine type drilling tool single body comprises a drill bit and a drill rod mechanism, the drill rod mechanism comprises an outer threaded pipe, a magazine inner pipe assembly and a first connector part, and the magazine inner pipe assembly is coaxially arranged in the outer threaded pipe in a sleeved mode; the first connector part and the drill bit are fixedly connected to the upper end and the lower end of the outer threaded pipe in the axial direction correspondingly and conduct axial limiting on the missile cabin inner pipe assembly, and the missile cabin inner pipe assembly is rotationally matched with the outer threaded pipe or / and the drill bit or / and the first connector part. An inner pipe upper connector is fixed to the upper end face of the missile cabin inner pipe assembly. The missile cabin inner pipe assembly comprises a plurality of inner pipes, the inner pipes are sequentially and fixedly connected in the axial direction of the outer threaded pipe, each inner pipe forms an independent pipe cabin, every two adjacent pipe cabins are separated through a partition plate, and the side wall of each inner pipe is provided with a first sampling opening located in the same side of the missile cabin inner pipe assembly; a plurality of second sampling ports are formed in the side wall of the external threaded pipe.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of extraterrestrial exploration sampling, in particular to a magazine type drill unit for extraterrestrial directional sequence-preserving sampling, an assembly and a sampling method. BACKGROUND

[0002] In the early stage of extraterrestrial planet soil sampling, an aluminum tube-shaped soil sampler is usually used to be hammered into the extraterrestrial planet soil, but the aluminum tube-shaped soil sampler cannot reach a greater depth no matter how hard it is hammered. The improved soil sampler tube shoe structure is deformed and compacted under the conical surface in the soil sampler during use. Later, a sampling drill rig equipment is used to replace the pressure / penetration sampling and becomes the main deep sampling equipment. The sampling drill rig equipment belongs to a combined coring drilling of "spiral drill pipe + spiral core barrel and coring device + hard alloy drill bit". The battery pack is applied to supply power, the drill rig drives the drill bit and the drill pipe, applies vibration impact to assist rotary drilling, supplements in the form of drill pipe connection during the deep directional drilling, and finally recovers the core sample by pulling out the drill pipe with a wrench. However, the spiral core barrel of the sampling drill rig equipment cannot effectively preserve the drilled sample, and part of the sample is lost during the extraction of the drill pipe. SUMMARY

[0003] The present application solves the technical problems of the loss of part of the sample during the extraction of the drill pipe and unclear sample sequence in the existing extraterrestrial planet soil sampling, and provides a magazine type drill unit for extraterrestrial directional sequence-preserving sampling, an assembly and a sampling method.

[0004] The technical solution of the present application to solve the above technical problems is as follows: the present application provides a magazine type drill unit for extraterrestrial directional sequence-preserving sampling, which comprises a drill bit and a drill pipe mechanism. The drill pipe mechanism comprises an outer threaded pipe, a magazine inner pipe assembly and a first joint part. The magazine inner pipe assembly is coaxially sleeved in the outer threaded pipe. The first joint part and the drill bit are respectively fixedly connected to the upper and lower ends of the outer threaded pipe in the axial direction and axially limit the magazine inner pipe assembly. The magazine inner pipe assembly is rotationally matched with the outer threaded pipe, the drill bit or the first joint part. An inner pipe upper joint is fixed to the upper end surface of the magazine inner pipe assembly. The inner tube assembly in the shell comprises a plurality of inner tubes, the plurality of inner tubes are sequentially fixedly connected along the axial direction of the outer threaded pipe, each inner tube forms an independent tube cabin, two adjacent tube cabins are separated by a partition plate, a first sampling port is formed in the side wall of each inner tube, and the plurality of first sampling ports are located on the same side of the inner tube assembly in the shell.

[0005] The beneficial effects of the present application are that the shell type drill tool single body for extraterrestrial directional sampling and sequence preservation is provided with a plurality of inner tubes with independent tube cabins, the first sampling ports can be opened or closed by rotating the inner tube assembly in the shell, the extraterrestrial soil sample can fall into the tube cabin for collection, the loss of the extraterrestrial soil sample after sampling can be effectively prevented, the collected samples can be effectively separated, and the layer sequence of the collected samples can be effectively ensured.

[0006] On the basis of the above technical solution, the present application can be further improved as follows.

[0007] Further, the outer side wall of the inner tube at the upper end of the inner tube assembly in the shell is rotatably connected to the first joint part through a plurality of first balls, and the outer side wall of the inner tube at the lower end of the inner tube assembly in the shell is rotatably connected to the drill bit through a plurality of second balls.

[0008] The beneficial effects of the above further scheme are that the rotation cooperation between the inner tube assembly in the shell and the outer threaded pipe is realized through the balls, the installation is simple, and the operation is convenient.

[0009] Further, the first joint part is in a cylindrical structure, the inner side wall of the axial end of the first joint part is provided with a plurality of first sliding grooves, the first sliding grooves are in a circular arc strip structure and are arranged along the circumferential direction of the first joint part, the plurality of first sliding grooves are sequentially and spacedly arranged along the circumferential direction of the first joint part, and at least one first ball is slidably connected in each first sliding groove.

[0010] The beneficial effects of the above further scheme are that the rotation angle of the inner tube assembly in the shell each time can be limited by providing a plurality of first sliding grooves.

[0011] Further, a part of the drill bit is inserted into the lower end of the outer threaded pipe and is fixedly connected through a screw, and a part of the first joint part is inserted into the upper end of the outer threaded pipe and is fixedly connected through a screw.

[0012] Further, the upper end of the inner tube is in an open structure, and the lower end of the inner tube is provided with the partition plate; the lower end of the inner tube is formed with a plug-in part, the outer diameter of the plug-in part is smaller than the outer diameter of the main body structure of the inner tube, and the plug-in part of one inner tube can be adapted to be plugged into the open structure of an adjacent inner tube and fixedly connected by a screw.

[0013] The beneficial effect of the above further scheme is that the plug-in part is convenient for the plug-in fixing between two adjacent inner tubes.

[0014] Further, the circumferential wall of the plug-in part is fixed with a guide rib, and the upper end of the inner tube is provided with a guide opening, and the guide rib can be adapted to be plugged into the corresponding guide opening.

[0015] The beneficial effect of the above further scheme is that the guide rib and the guide opening are provided to avoid deviation of two adjacent inner tubes during the plug-in process.

[0016] Further, the upper joint of the inner tube is coaxially arranged with the inner tube assembly of the magazine, and the upper joint of the inner tube has a connection groove with a polygonal cross section.

[0017] The application also provides an extraterrestrial directional sequence-preserving sampling magazine type drill tool assembly, which comprises the extraterrestrial directional sequence-preserving sampling magazine type drill tool monomer and at least one extension pipe group. The extension pipe group adopts the same structure as the drill rod mechanism, the lower end face of the inner tube assembly of the extension pipe group is fixed with an inner tube lower joint, and the adjacent inner tube lower joints and the inner tube upper joint can be adapted to be plugged into each other for circumferential positioning; the lower end of the outer threaded pipe of the extension pipe group is fixed with a second joint part for axially limiting the lower end of the inner tube assembly of the extension pipe group, and the inner tube assembly of the extension pipe group is rotationally connected with the outer threaded pipe of the extension pipe group or / and the first joint part or / and the second joint part of the extension pipe group. The adjacent first joint part and the second joint part are plugged into each other and circumferentially limited by splines, the outer side wall of the first joint part is threadedly connected with a sleeve, the outer side wall of the second joint part is provided with an annular limiting groove, and the outer side wall of the second joint part is further fixed with a ring of annular limiting ribs which separate the annular limiting groove and the spline, and the upper end of the first joint part abuts against the annular limiting ribs; the inner side wall of one end of the sleeve is fixed with a limiting ring, and the limiting ring is located in the annular limiting groove and abuts against the annular limiting ribs.

[0018] The beneficial effect of the application is that the extraterrestrial directional sequence-preserving sampling magazine type drill tool assembly can set multiple extension pipe groups according to needs to realize sampling requirements of sufficient depth.

[0019] Further, the outer lateral wall of the inner tube at the lower end of the inner tube assembly in the shell of the extension tube group is connected with the second joint part through a plurality of third balls; The second joint part is in a cylindrical structure, and the inner lateral wall of the axial end of the second joint part is provided with a plurality of second sliding grooves in an arc-shaped strip structure and arranged along the circumferential direction of the second joint part. The plurality of second sliding grooves are sequentially and spaced arranged along the circumferential direction of the second joint part, and at least one third ball is slidably connected in each second sliding groove.

[0020] The beneficial effect of the above further scheme is that the rotation angle of the inner tube assembly in the shell can be limited by providing the second sliding groove.

[0021] The application further provides a sampling method, which is realized by using the above-mentioned outer directional sequence-preserving sampling cartridge drill unit or the above-mentioned outer directional sequence-preserving sampling cartridge drill assembly, and includes the following steps: After connecting the drill with the first joint part, the drill is stopped after the outer threaded tube is drilled into the soil with the first joint part and the first sampling ports and the second sampling ports are arranged in a one-to-one correspondence. Then, the soil at the corresponding first sampling ports and second sampling ports is dropped into the corresponding tube cabin by vibrating the soil surface. Finally, the first sampling ports are closed by operating the inner tube upper joint of the uppermost end of the cartridge drill unit or the cartridge drill assembly by using a tool, and the soil sampling is completed.

[0022] The sampling method of the application can open or close the first sampling ports by rotating the inner tube assembly in the shell, so that the extraterrestrial soil sample can fall into the tube cabin for collection, the loss of the extraterrestrial soil sample after sampling can be effectively prevented, the collected sample can be effectively separated, and the layer sequence of the collected sample can be effectively ensured. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 FIG. 4 is a sectional view of the outer directional sequence-preserving sampling cartridge drill assembly of the application; Figure 2 FIG. 5 is an enlarged structural schematic view of the A part in FIG. 4; Figure 1 Figure 3 FIG. 6 is an enlarged structural schematic view of the B part in FIG. 4; Figure 1 Figure 4 FIG. 7 is an enlarged structural schematic view of the C part in FIG. 4; Figure 1 FIG. 7 is an enlarged structural schematic view of the C part in FIG. 4;​​Figure 5 for Figure 1 Enlarged structural diagram of section D in the middle; Figure 6 This is a three-dimensional structural diagram of the second connector of the present invention; Figure 7 This is a cross-sectional view of the first joint portion of the present invention; Figure 8 This is a three-dimensional structural diagram of the mating of the externally threaded tube and the inner tube assembly of the ammunition compartment according to the present invention. Figure 1 ; Figure 9 for Figure 8 Enlarged structural diagram of section E; Figure 10 This is a three-dimensional structural diagram of the mating of the externally threaded tube and the inner tube assembly of the ammunition compartment according to the present invention. Figure 2 ; Figure 11 This is a three-dimensional structural schematic diagram of the internal tube assembly of the bomb bay according to the present invention; Figure 12 This is a cross-sectional view of the inner tube of the present invention. Figure 13 This is a schematic diagram of the usage status of the magazine-type drilling tool assembly for extraterrestrial directional sequence-preserving sampling according to the present invention.

[0024] The attached diagram lists the components represented by each number as follows: 100. Drill bit; 200. Drill pipe mechanism; 201. External threaded pipe; 202. Inner pipe; 203. First joint; 204. First sampling port; 205. Second sampling port; 206. Upper joint of inner pipe; 207. Lower joint of inner pipe; 208. First ball bearing; 209. Second ball bearing; 210. Insertion part; 211. Guide rib; 212. Guide opening; 213. Connecting groove; 214. First sliding groove; 215. Screw; 216. Pipe compartment; 217. Partition plate; 300. Extension tube assembly; 301. Second connector; 302. Annular limiting rib; 303. Annular limiting groove; 304. Spline; 305. Second slide groove; 306. Third ball bearing; 400, threaded sleeve; 401, limiting ring; 500, soil. Detailed Implementation

[0025] The principles and features of the present invention are described below. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0026] Example 1 like Figures 1-13As shown, the magazine type drill tool of the extraterrestrial directional order sampling of the embodiment comprises a drill bit 100 and a drill rod mechanism 200, the drill rod mechanism 200 comprises an outer threaded pipe 201, a magazine inner pipe assembly and a first joint part 203, the magazine inner pipe assembly is coaxially sleeved in the outer threaded pipe 201, the first joint part 203 and the drill bit 100 are fixedly connected at the upper and lower ends of the outer threaded pipe 201 in the axial direction respectively and axially limit the magazine inner pipe assembly, the magazine inner pipe assembly is rotationally matched with the outer threaded pipe 201 or / and the drill bit 100 or / and the first joint part 203; the upper end surface of the magazine inner pipe assembly is fixed with an inner pipe upper joint 206; The magazine inner pipe assembly comprises a plurality of inner pipes 202, the plurality of inner pipes 202 are fixedly connected in sequence along the axial direction of the outer threaded pipe 201, each inner pipe 202 is formed with an independent pipe cabin 216, two adjacent pipe cabins 216 are separated by a partition plate 217, a first sampling port 204 is formed on the side wall of each inner pipe 202, and a plurality of first sampling ports 204 are located on the same side of the magazine inner pipe assembly; a plurality of second sampling ports 205 are formed on the side wall of the outer threaded pipe 201, and the plurality of second sampling ports 205 are arranged in sequence and at intervals along the axial direction of the outer threaded pipe 201; during the rotation of the magazine inner pipe assembly relative to the outer threaded pipe 201, the plurality of second sampling ports 205 can be arranged one by one corresponding to the plurality of first sampling ports 204 and completely expose all the first sampling ports 204. The first sampling port 204 and the second sampling port 205 can adopt the same structure in shape and size, for example, both can adopt a rectangular structure with a chamfer.

[0027] As shown in Figure 3 and Figure 5 specifically, a part of the drill bit 100 is inserted into the lower end of the outer threaded pipe 201 and fixedly connected through a screw 215; a part of the first joint part 203 is inserted into the upper end of the outer threaded pipe 201 and fixedly connected through a screw 215.

[0028] As shown in Figure 1 and Figure 3 the inner pipe upper joint 206 of the embodiment is coaxially arranged with the magazine inner pipe assembly, the inner pipe upper joint 206 has a connection groove 213 with a polygonal cross section, preferably a square.

[0029] As shown in Figure 1 and Figure 5 the drill bit 100 of the embodiment is in a conical structure, an outer thread is arranged on the outer side wall of the drill bit 100, and the drill bit 100 can be matched with the outer threaded pipe for drilling.

[0030] The magazine type drill tool of the extraterrestrial directional order sampling of the embodiment can effectively prevent the loss of the extraterrestrial soil sample after the sampling is completed, and can effectively separate the collected sample, so that the layer sequence of the collected sample is clear.

[0031] Embodiment 2 On the basis of embodiment 1, the embodiment provides a preferred rotation matching scheme of the inner tube assembly of the magazine and the outer thread tube 201. As shown in Figures 1-5 The outer side wall of the inner tube 202 at the upper end of the magazine inner tube assembly is rotationally connected to the first joint part 203 through a plurality of first balls 208, and the outer side wall of the inner tube 202 at the lower end of the magazine inner tube assembly is rotationally connected to the drill bit 100 through a plurality of second balls 209. The rotation matching between the magazine inner tube assembly and the outer thread tube is realized through the balls, which is simple to install and convenient to operate.

[0032] As shown in Figure 7 Preferably, the first joint part 203 is in a cylindrical structure, the inner side wall of one end of the first joint part 203 in the axial direction is provided with a plurality of first sliding grooves 214, the first sliding grooves 214 are in a circular arc strip structure and are arranged along the circumference of the first joint part 203, and a plurality of the first sliding grooves 214 are sequentially and spaced arranged along the circumference of the first joint part 203. At least one first ball 208 is slidably connected in each first sliding groove 214. By providing a plurality of first sliding grooves, the rotation angle of the magazine inner tube assembly can be limited each time.

[0033] Specifically, three first sliding grooves 214 can be provided, and the first ball 208 rotates from the head end to the tail end in the first sliding groove, thereby driving the entire mechanism to rotate by 90°.

[0034] Embodiment 3 On the basis of embodiment 1 or embodiment 2, the embodiment provides a preferred structure of the inner tube 202. As shown in Figure 11 and Figure 12 The upper end of the inner tube 202 is in an open structure, the lower end of the inner tube 202 is provided with the partition plate 217, and in fact, the lower end of the inner tube 202 is in a closed structure, and the closed structure forms the partition plate 217. The lower end of the inner tube 202 forms the plug-in part 210, the outer diameter of the plug-in part 210 is smaller than the outer diameter of the other main body structure of the inner tube 202, and the plug-in part 210 of one inner tube can be adapted to be plugged into the open structure of an adjacent inner tube 202 and fixedly connected through the screw 215. By providing the plug-in part, the plug-in and fixation between the adjacent two inner tubes are facilitated.

[0035] Preferably, as shown in Figure 11 andFigure 12 As shown, a guide rib 211 is fixed on the peripheral sidewall of the insertion part 210, and a guide opening 212 is provided at the upper end of the inner tube 202. The guide rib 211 can be fitted into the corresponding guide opening 212. The guide rib and guide opening are designed to prevent deviation between adjacent inner tubes during insertion.

[0036] Example 4 like Figures 1-13 As shown, this embodiment provides a magazine-type drill assembly for extraterrestrial directional sequencing and preserving sampling, including a magazine-type drill unit for extraterrestrial directional sequencing and preserving sampling as described in any of the above embodiments, and also including at least one extension tube assembly 300, wherein at least one extension tube assembly 300 is sequentially and coaxially installed at the upper end of the magazine-type drill unit for extraterrestrial directional sequencing and preserving sampling. The extension tube assembly 300 adopts the same structure as the drill pipe mechanism 200. The lower end face of the inner tube assembly of the chamber of the extension tube assembly 300 is fixed with an inner tube lower connector 207. The adjacent inner tube lower connector 207 and inner tube upper connector 206 can be mutually adapted and inserted for circumferential positioning. The lower end of the external threaded tube 201 of the extension tube assembly 300 is fixed with a second connector 301 that axially limits the lower end of the inner tube assembly of the chamber of the extension tube assembly 300. The inner tube assembly of the chamber of the extension tube assembly 300 is rotatably engaged with the external threaded tube 201 of the extension tube assembly 300 and / or the first connector 203 and / or the second connector 301 of the extension tube assembly 300. The first joint portion 203 and the second joint portion 301, which are arranged adjacent to each other, are inserted into each other and are circumferentially limited by the spline 304. The outer side wall of the first joint portion 203 is threaded with a threaded sleeve 400. The outer side wall of the second joint portion 301 is provided with an annular limiting groove 303. An annular limiting rib 302 is also fixed on the outer side wall of the second joint portion 301, which separates the annular limiting groove 303 and the spline 304. The upper end of the first joint portion 203 abuts against the annular limiting rib 302. A limiting ring 401 is fixed on the inner side wall of one end of the threaded sleeve 400. The limiting ring 401 is located in the annular limiting groove 303 and abuts against the annular limiting rib 302.

[0037] like Figure 3As shown, preferably, the outer wall of the inner tube 202 located at the lower end of the inner tube assembly of the bomb bay in the extension tube group 300 is rotatably connected to the second connector 301 via a plurality of third balls 306; the second connector 301 has a cylindrical structure, and the inner wall of one axial end of the second connector 301 is provided with a plurality of second sliding grooves 305. The second sliding grooves 305 have an arc-shaped elongated structure and are arranged along the circumference of the second connector 301. The plurality of second sliding grooves 305 are arranged sequentially at intervals along the circumference of the second connector 301, and at least one of the third balls 306 is slidably connected in each second sliding groove 305. By providing the second sliding grooves, the rotation angle of the bomb bay inner tube assembly can be limited.

[0038] The magazine-type drill assembly for extraterrestrial directional sequencing sampling in this embodiment can be equipped with multiple extension tube groups as needed to achieve sampling at sufficient depth.

[0039] Example 5 This embodiment provides a sampling method, which is implemented using a single cartridge-type drill string for extraterrestrial directional sequencing-preserving sampling as described in any of the embodiments 1 to 3 above, or a cartridge-type drill string assembly for extraterrestrial directional sequencing-preserving sampling as described in embodiment 4 above, and includes the following steps: Connect the drilling rig to the first connector 203 and provide power. Then, use the drilling rig to drill the magazine-type drill unit or magazine-type drill assembly into the soil 500 at an angle downwards. After all the second sampling ports 205 of the external threaded pipe 201 are arranged facing upwards, the drilling rig stops working. Use a tool to operate the uppermost inner tube connector 206 of the magazine-type drill unit or magazine-type drill assembly, rotate the inner tube assembly of the magazine by a set angle (generally 90°, which is the angle at which the ball moves in the corresponding groove), so that the multiple first sampling ports 204 are arranged one-to-one with the multiple second sampling ports 205. Then, vibrate the surface of the soil 500, so that the soil 500 at the corresponding first sampling ports 204 and second sampling ports 205 falls into the corresponding tube compartment 216. Then, use a tool to operate the drilling rig to close the first sampling ports 204 with the uppermost inner tube connector 206 of the magazine-type drill unit or magazine-type drill assembly, thus completing the soil 500 sampling. Commonly used sampling vibration mechanisms (such as hammering) can be used to vibrate the soil surface.

[0040] The sampling method of this embodiment can open or close the first sampling port by rotating the inner tube assembly of the chamber, so that the extraterrestrial soil sample falls into the chamber for collection. This can effectively prevent the extraterrestrial soil sample from being lost after sampling and can also effectively separate the collected samples, thus ensuring that the stratification of the collected samples is clear.

[0041] In the description of this invention, it should be understood that the terms "upper", "lower", "inner", "outer", "axial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0043] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0044] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0045] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0046] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A single magazine-type drill bit for extraterrestrial directional sequencing sampling, characterized in that: The device includes a drill bit and a drill rod mechanism. The drill rod mechanism includes an externally threaded tube, a chamber inner tube assembly, and a first connector. The chamber inner tube assembly is coaxially sleeved inside the externally threaded tube. The first connector and the drill bit are respectively fixedly connected to the upper and lower ends of the externally threaded tube in the axial direction and axially limit the chamber inner tube assembly. The chamber inner tube assembly is rotatably engaged with the externally threaded tube and / or the drill bit and / or the first connector. An upper connector for the inner tube is fixed to the upper end face of the chamber inner tube assembly. The bomb bay inner tube assembly includes multiple inner tubes, which are sequentially and fixedly connected along the axial direction of the external threaded tube. Each inner tube forms an independent tube compartment, and adjacent tube compartments are separated by a partition. Each inner tube has a first sampling port on its side wall, and the multiple first sampling ports are located on the same side of the bomb bay inner tube assembly. The external threaded tube has multiple second sampling ports on its side wall, which are sequentially and spaced apart along the axial direction of the external threaded tube. During the rotation of the bomb bay inner tube assembly relative to the external threaded tube, the multiple second sampling ports can be arranged in a one-to-one correspondence with the multiple first sampling ports, and all the first sampling ports are fully exposed.

2. The magazine-type drill bit unit for extraterrestrial directional sequence-preserving sampling according to claim 1, characterized in that, The outer wall of the inner tube at the upper end of the bomb bay inner tube assembly is rotatably connected to the first joint via a plurality of first ball bearings, and the outer wall of the inner tube at the lower end of the bomb bay inner tube assembly is rotatably connected to the drill bit via a plurality of second ball bearings.

3. The magazine-type drill bit unit for extraterrestrial directional sequence-preserving sampling according to claim 2, characterized in that, The first connector has a cylindrical structure. The inner sidewall of one axial end of the first connector is provided with a plurality of first grooves. The first grooves are arc-shaped long strips and are arranged along the circumference of the first connector. The plurality of first grooves are arranged at intervals along the circumference of the first connector. At least one first ball is slidably connected in each first groove.

4. The magazine-type drill bit unit for extraterrestrial directional sequence-preserving sampling according to claim 1, characterized in that, A portion of the drill bit is inserted into the lower end of the externally threaded tube and fixedly connected by screws; a portion of the first connector is inserted into the upper end of the externally threaded tube and fixedly connected by screws.

5. The magazine-type drill bit unit for extraterrestrial directional sequence-preserving sampling according to claim 1, characterized in that, The upper end of the inner tube is an open structure, and the lower end of the inner tube is provided with the partition plate; the lower end of the inner tube has a plug-in part, the outer diameter of the plug-in part is smaller than the outer diameter of the other main structures of the inner tube, and the plug-in part of one inner tube can be adapted to be plugged into the open structure of an adjacent inner tube and fixedly connected by screws.

6. The magazine-type drill bit unit for extraterrestrial directional sequence-preserving sampling according to claim 5, characterized in that, Guide ribs are fixed on the peripheral sidewall of the insertion part, and a guide opening is provided at the upper end of the inner tube. The guide ribs can be adapted to be inserted into the corresponding guide opening.

7. The magazine-type drill bit unit for extraterrestrial directional sequencing and sampling according to any one of claims 1 to 6, characterized in that, The upper connector of the inner tube is arranged coaxially with the inner tube assembly of the bomb bay, and the upper connector of the inner tube has a connecting groove with a polygonal cross-section.

8. A magazine-type drilling tool assembly for extraterrestrial directional sequence-preserving sampling, characterized in that, The device includes a magazine-type drill string as described in any one of claims 1 to 7, and further includes at least one extension tube assembly, wherein the at least one extension tube assembly is sequentially and coaxially installed at the upper end of the magazine-type drill string as described in any one of claims 1 to 7. The extension tube assembly adopts the same structure as the drill pipe mechanism. The lower end face of the inner tube assembly of the chamber of the extension tube assembly is fixed with a lower inner tube connector. The adjacent lower inner tube connector and the upper inner tube connector can be mutually adapted and inserted for circumferential positioning. The lower end of the external threaded tube of the extension tube assembly is fixed with a second connector portion that axially limits the lower end of the inner tube assembly of the chamber of the extension tube assembly. The inner tube assembly of the chamber of the extension tube assembly is rotatably engaged with the external threaded tube of the extension tube assembly and / or the first connector portion and / or the second connector portion of the extension tube assembly. The first and second connectors, arranged adjacent to each other, are interlocked and circumferentially limited by a spline. A threaded sleeve is threaded onto the outer wall of the first connector, and an annular limiting groove is formed on the outer wall of the second connector. An annular limiting rib is also fixed on the outer wall of the second connector, separating the annular limiting groove and the spline. The upper end of the first connector abuts against the annular limiting rib. A limiting ring is fixed to the inner wall of one end of the threaded sleeve. The limiting ring is located in the annular limiting groove and abuts against the annular limiting rib.

9. The magazine-type drilling tool assembly for extraterrestrial directional sequence-preserving sampling according to claim 8, characterized in that, The outer wall of the inner tube located at the lower end of the inner tube assembly of the extended tube group is rotatably connected to the second joint through a plurality of third ball bearings. The second connector has a cylindrical structure. The inner sidewall of one axial end of the second connector is provided with a plurality of second sliding grooves. The second sliding grooves are arc-shaped strips and are arranged along the circumference of the second connector. The plurality of second sliding grooves are arranged at intervals along the circumference of the second connector. At least one third ball is slidably connected in each second sliding groove.

10. A sampling method, characterized in that, The method employs a single cartridge-type drill string for extraterrestrial directional sequencing-preserving sampling as described in any one of claims 1 to 7, or a cartridge-type drill string assembly for extraterrestrial directional sequencing-preserving sampling as described in claim 8 or 9, and includes the following steps: Connect the drilling rig to the first connector, then use the drilling rig to drill the magazine-type drill bit unit or magazine-type drill bit assembly into the soil at an angle downwards. After all the second sampling ports of the external threaded pipe are arranged facing upwards, stop the drilling rig. Use a tool to operate the uppermost inner tube connector of the magazine-type drill bit unit or magazine-type drill bit assembly, rotate the inner tube assembly of the magazine to a set angle, so that the multiple first sampling ports are arranged one-to-one with the multiple second sampling ports. Then vibrate the soil surface to make the soil at the corresponding first sampling ports and second sampling ports fall into the corresponding tube chamber. Then use a tool to operate the drilling rig to close the first sampling port by closing the uppermost inner tube connector of the magazine-type drill bit unit or magazine-type drill bit assembly, thus completing the soil sampling.

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