A device for drilling and mining surface lunar soil

Abstract

The present application relates to deep space exploration sampling device, especially to a kind of surface lunar soil drilling and mining integrated device.It includes drill bit, solid sleeve, drill pipe, coring liner, force sensing mechanism and power transmission mechanism, wherein drill bit and drill pipe are hollow structure, drill bit is detachably installed in the lower end of drill pipe;The upper end of drill pipe is connected with power transmission mechanism, coring liner is detachably installed in the inside of drill pipe, for collecting lunar soil sample;Force sensing mechanism is rotatably installed in the output end of power transmission mechanism, solid sleeve is sleeved on the outside of drill pipe, and upper end is detachably connected with force sensing mechanism, temperature measuring device is arranged on solid sleeve, and force sensing mechanism is used to measure the force and torque information of solid sleeve and drill pipe in drilling and mining process.The present application can detect the temperature change of drill pipe in drilling and mining process in real time, and drill pipe has the characteristics of quick installation and quick disassembly;Coring liner can be half split to sample surface lunar soil and keep its layered information.

Description

TECHNICAL FIELD

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

[0002] The lunar exploration is one of the most challenging and innovative major activities in the field of high-tech in the world today, and the lunar soil sampling device is an indispensable important link in the lunar surface sampling process. The general lunar soil generally refers to the composition of the lunar surface weathering layer, that is, a layer of loose granular and powdery weathering material with a thickness of several meters to tens of meters distributed on the lunar surface, which has poor fluidity; it also includes a small amount of large-diameter rocks, which are mainly composed of breccia, basalt, anorthosite, glass, molten body, rock mineral debris, etc. In the scientific research field directly related to the design of the lunar surface drilling sampling drill, due to the particularity of the lunar environment and the uncertainty of the lunar soil properties, the drill configuration design is far from mature. At present, the design concept of the ground drill is followed in many problems, and the design is carried out by using the experience method, and most of the drill designs are designed only for one of the small particle size lunar soil or rock, which has limitations in use and is prone to failure when facing complex drilling objects. In addition, due to the technical difficulty and engineering limitation factors, the previous drilling and sampling device cannot carry the corresponding temperature sensor near the drill to measure the real-time temperature; and the stress state of the drill and the drill bit during drilling cannot be obtained SUMMARY

[0003] In view of the above problems, the purpose of the present application is to provide a surface lunar soil drilling and sampling integrated device to solve the problems of single design application, disassembly and difficulty in sensing and measuring of the existing lunar soil drilling and sampling equipment.

[0004] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0005] The present application provides a surface lunar soil drilling and sampling integrated device, which comprises a drill bit, a solid sleeve, a drill rod, a coring liner, a force sensing mechanism and a power transmission mechanism, wherein the drill bit and the drill rod are both hollow structures, the drill bit is detachably installed at the lower end of the drill rod for drilling lunar soil, the upper end of the drill rod is connected with the power transmission mechanism, the coring liner is detachably installed inside the drill rod for collecting lunar soil samples, the force sensing mechanism is rotatably installed at the output end of the power transmission mechanism, the solid sleeve is sleeved outside the drill rod, and the upper end is detachably connected with the force sensing mechanism, the solid sleeve is provided with a temperature measuring device, and the force sensing mechanism is used to measure the force and torque information of the drill rod during drilling and sampling.

[0006] The drill bit comprises a drill edge, a drill tooth and a drill body, wherein the drill body is a hollow structure, and a spiral cutting edge is arranged on the outer circumference in the axial direction, a plurality of drill edges and a plurality of drill teeth are alternately arranged on the outer edge of one end of the drill body in the circumferential direction, and the other end of the drill body is threadedly connected with the drill rod.

[0007] The solid sleeve comprises a lower sleeve, a middle sleeve and an upper sleeve connected in sequence through detachable connection structures.

[0008] The detachable connection structure comprises a spring type bayonet and a stepped plug-in part matched with the spring type bayonet;

[0009] The lower sleeve and the upper sleeve are provided with spring type bayonets at the upper ends, and the lower sleeve and the middle sleeve are provided with stepped plug-in parts at the lower ends.

[0010] The temperature measuring device comprises a sensor I, a sensor extension circuit and two temperature measuring parts, wherein the sensor I is embedded in the groove provided at the upper end of the upper sleeve, the sensor I is connected with the two temperature measuring parts through the sensor extension circuit, and the two temperature measuring parts are respectively embedded in the grooves provided at the upper ends of the middle sleeve and the upper sleeve.

[0011] The drill rod comprises a lower drill rod, a middle drill rod and an upper drill rod connected in sequence through threads, wherein the upper end of the upper drill rod is connected with the power transmission mechanism, and the lower end of the lower drill rod is connected with the drill bit.

[0012] The coring liner comprises a lower liner, a middle liner and an upper liner connected in sequence through threads; the lower liner, the middle liner and the upper liner each comprise two half pipe bodies split along the axial direction, and the two half pipe bodies are fixed together through a plurality of buckles.

[0013] The power transmission mechanism comprises a servo motor, a reducer, a shaft coupling, a shaft, a drill rod connector and a solid sleeve connector, wherein the input shaft of the reducer is connected with the output shaft of the servo motor, the output shaft of the reducer is connected with the upper end of the shaft through the shaft coupling, the lower end of the shaft is connected with the drill rod through the drill rod connector, and the solid sleeve connector is sleeved outside the drill rod connector and connected with the force sensing mechanism.

[0014] The force sensing mechanism comprises a sensor flange I, a sensor II, a support, a fixed sleeve, a sensor flange II, a sensor III and a torque sensing mechanism, wherein the support is installed inside the fixed sleeve, the support is sleeved on the shaft, and the support is connected with the shaft through a bearing;

[0015] The sensor flange I is sleeved on the shaft, and the bottom is connected with the drill rod connector, and the top of the sensor flange I abuts against the support;

[0016] One end of the sensor II is connected with the sensor flange I, and the other end is connected with the fixed sleeve;

[0017] The sensor flange II is arranged in the groove arranged on the upper part of the support and abuts against the outer ring of the bearing, the lower end of the sensor III is connected with the sensor flange II, and the upper end is connected with the support;

[0018] The torque sensor mechanism is arranged on the output end of the speed reducer and is used for detecting the transmission torque information of the speed reducer.

[0019] The torque sensor mechanism comprises a fixing member and a sensor IV, one end of the sensor IV is connected with the end pad arranged at the front end of the speed reducer, the fixing member is sleeved on the shaft and connected with the other end of the sensor IV, and the fixing member is in clearance fit with the shaft.

[0020] The surface lunar soil drilling and sampling integrated device has the advantages of compact structure, convenient disassembly and assembly, strong adaptability, and can realize sampling of surface lunar soil and keeping of layered information of the surface lunar soil; the temperature sensor embedded in the solid sleeve can detect the temperature change of the drill rod in the drilling and sampling process in real time, the drill rod has the characteristics of rapid installation and rapid disassembly; the core liner can sample the surface lunar soil and keep the layered information of the surface lunar soil, and if the drilling and sampling integrated device is modified, it can be applied to Mars and small celestial body sampling tasks. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is an axonometric view of the surface lunar soil drilling and sampling integrated device;

[0022] Figure 2 It is a sectional view of the surface lunar soil drilling and sampling integrated device;

[0023] Figure 3 It is a structural schematic view of the drill bit;

[0024] Figure 4 It is a structural schematic view of the solid sleeve;

[0025] Figure 5 It is Figure 4 It is a partial enlarged view of position I;

[0026] Figure 6 It is Figure 4 It is a partial enlarged view of position II;

[0027] Figure 7 It is a structural schematic view of the drill rod;

[0028] Figure 8 It is a structural schematic view of the core liner;

[0029] Figure 9 It is Figure 8 It is a partial enlarged view of position III;

[0030] Figure 10 It is a structural schematic diagram of the force sensing mechanism and the power transmission mechanism in the present invention;

[0031] In the figure: 1 is a drill bit, 101 is a drill blade, 102 is a drill tooth, 103 is a drill body, 2 is a solid casing, 201 is a lower casing, 202 is a middle casing, 203 is an upper casing, 204 is a sensor I, 205 is a sensor extension circuit, 206 is a temperature measuring component, 207 is a spring-loaded bayonet, 208 is a stepped plug-in part, 3 is a drill rod, 301 is a lower drill rod, 302 is a middle drill rod, 303 is an upper drill rod, 4 is a core liner, 401 is a lower liner, 402 is a middle liner, 40 3 is the upper liner, 404 is the buckle, 5 is the force sensing mechanism, 501 is the sensor flange I, 502 is the sensor II, 503 is the support, 504 is the fixing sleeve, 505 is the sensor flange II, 506 is the sensor III, 507 is the fixing part, 508 is the sensor IV, 6 is the power transmission mechanism, 601 is the servo motor, 602 is the reducer, 603 is the end pad, 604 is the coupling, 605 is the shaft, 606 is the bearing, 607 is the drill pipe connector, and 608 is the solid casing connector. DETAILED DESCRIPTION

[0032] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] like Figure 1 、 Figure 2 As shown, the present invention provides an integrated device for drilling and mining lunar soil, including a drill bit 1, a solid casing 2, a drill rod 3, a coring liner 4, a force sensing mechanism 5 and a power transmission mechanism 6, wherein the drill bit 1 and the drill rod 3 are both hollow structures, the drill bit 1 can be detachably mounted on the lower end of the drill rod 3 for drilling lunar soil; the upper end of the drill rod 3 is connected to the power transmission mechanism 6, and the coring liner 4 can be detachably mounted inside the drill rod 3 for collecting lunar soil samples; the force sensing mechanism 5 can be rotatably mounted on the output end of the power transmission mechanism 6, the solid casing 2 is sleeved on the outside of the drill rod 3, and the upper end is detachably connected to the force sensing mechanism 5, a temperature measuring device is provided on the solid casing 2, the solid casing 2 is used to maintain the shape of the lunar soil and monitor the temperature changes of the drill rod during drilling and mining, the force sensing mechanism 5 is used to measure the force and torque information of the drill rod 3 during drilling and mining, and the power transmission mechanism 6 is used to provide power for the entire sampling device.

[0034] like Figure 3 As shown, in an embodiment of the present invention, the drill bit 1 includes a drill blade 101, drill teeth 102 and a drill body 103, wherein the drill body 103 is a hollow structure, and a spiral cutting edge is provided axially on the outer circumference, and a plurality of drill blades 101 and a plurality of drill teeth 102 are alternately provided circumferentially on the outer edge of one end of the drill body 103, and the other end of the drill body 103 is threadedly connected to the drill rod 3.

[0035] As shown in Figure 4 the embodiment of the present application, the solid casing 2 comprises a lower casing 201, a middle casing 202 and an upper casing 203 connected in sequence through detachable connection structures. As shown in Figure 6 the detachable connection structures comprise spring type sockets 207 and stepped plug-in parts 208 plugged and matched with the spring type sockets 207; the upper ends of the lower casing 201 and the middle casing 202 are provided with the spring type sockets 207, the lower ends of the upper casing 203 and the middle casing 202 are provided with the stepped plug-in parts 208, and the adjacent two casings are connected through the stepped plug-in parts 208 plugged and matched with the spring type sockets 207.

[0036] As shown in Figures 4-5 the embodiment of the present application, the temperature measuring device comprises a sensor I 204, a sensor extension circuit 205 and two temperature measuring parts 206, wherein the sensor I 204 is embedded in the groove provided at the upper end of the upper casing 203, the sensor I 204 is connected with the two temperature measuring parts 206 through the sensor extension circuit 205, and the two temperature measuring parts 206 are respectively embedded in the grooves provided at the upper ends of the middle casing 202 and the upper casing 203.

[0037] As shown in Figure 7 the embodiment of the present application, the drill rod 3 comprises a lower drill rod 301, a middle drill rod 302 and an upper drill rod 303 connected in sequence through threads, wherein the upper end of the upper drill rod 303 is connected with the power transmission mechanism 6, and the lower end of the lower drill rod 301 is connected with the drill bit 1.

[0038] As shown in Figures 8-9 the embodiment of the present application, the coring liner 4 comprises a lower liner 401, a middle liner 402 and an upper liner 403 connected in sequence through threads; the lower liner 401, the middle liner 402 and the upper liner 403 each comprise two half pipe bodies split along the axial direction, and the two half pipe bodies are fixed together through a plurality of buckles 404. The split structure of the coring liner 4 facilitates the original sample to be taken out.

[0039] As shown in Figure 10 the embodiment of the present application, the power transmission mechanism 6 comprises a servo motor 601, a speed reducer 602, a shaft coupling 604, a shaft 605, a drill rod connecting head 607 and a solid casing connecting head 608, wherein the input shaft of the speed reducer 602 is connected with the output shaft of the servo motor 601, the output shaft of the speed reducer 602 is connected with the upper end of the shaft 605 through the shaft coupling 604, the lower end of the shaft 605 is keyed connected with the drill rod connecting head 607, and the drill rod connecting head 607 is connected with the drill rod 3; the solid casing connecting head 608 is sleeved outside the drill rod connecting head 607 and the upper end thereof is connected with the force sensing mechanism 5, and the lower end of the solid casing connecting head 608 is connected with the upper casing 203 in the solid casing 2.

[0040] In the embodiment of the present application, the force sensing mechanism 5 comprises a sensor flange I 501, a sensor II 502, a support 503, a fixed sleeve 504, a sensor flange II 505, a sensor III 506, and a torque sensing mechanism. The support 503 is installed inside the fixed sleeve 504, and the support 503 is sleeved on the shaft 605 and connected with the shaft 605 through the bearing 606. The sensor flange I 501 is sleeved on the shaft 605, and the bottom of the sensor flange I 501 is connected with the drill pipe connecting head 607 through a screw, and the top of the sensor flange I 501 abuts against the support 503. One end of the sensor II 502 is connected with the sensor flange I 501, and the other end is fixedly connected with the fixed sleeve 504 through a screw. The sensor flange II 505 is placed in the groove provided on the upper part of the support 503, and abuts against the outer ring of the bearing 606. The sensor III 506 is arranged on the sensor flange II 505, and the lower end of the sensor III 506 is connected with the sensor flange II 505, and the upper end of the sensor III 506 is connected with the support 503. The torque sensing mechanism is arranged on the output end of the speed reducer 602, and is used for detecting the transmission torque information of the speed reducer 602.

[0041] Specifically, the torque sensing mechanism comprises a fixing member 507 and a sensor IV 508. One end of the sensor IV 508 is connected with the end pad 603 provided at the front end of the speed reducer 602 through a screw, and the fixing member 507 is sleeved on the shaft 605 and connected with the other end of the sensor IV 508 through a screw. The fixing member 507 is clearance-fitted with the shaft 605.

[0042] The present application provides a kind of surface lunar soil drilling integration device, and its working principle is as follows:

[0043] (1)Drilling and mining process: first, the lower drill pipe 301 is installed on the drill pipe connector 607 at the end of the shaft 605, the lower drill pipe 301 contains the lower liner 401, and the lower casing 201 is connected with the solid casing connector 608. The servo motor 601 is decelerated by the reducer 602, and the power is transmitted to the shaft 605 through the shaft coupling 604, and then the hollow lower drill pipe 301 at the end of the shaft 605 is rotated, the lower drill pipe 301 uses its external spiral to discharge the lunar soil to the lunar surface, and in the process of drilling the lunar soil downwardly by the lower drill pipe 301, the lower casing 201 outside the lower drill pipe 301 moves downwardly synchronously, and the lower liner 401 inside the lower drill pipe 301 also probes downwardly and collects the lunar soil into the lower liner 401. When the lower drill pipe 301 is rotated to a certain depth, the connection between the solid casing connector 608 and the lower casing 201 and the drill pipe connector 607 and the lower drill pipe 301 is disconnected, at this time, the lower drill pipe 301, the lower liner 401 and the lower casing 201 are still in the lunar soil, and then the middle drill pipe 302 and the middle liner 402 are connected in a threaded connection mode, the middle casing 202 is connected in a spring buckle mode, and drilling is continued; when the drill pipe 3 drills to a certain depth, the upper liner 403, the upper drill pipe 303 and the upper casing 203 are continued to be connected in the above-mentioned mode. When the drill pipe 3 drills to the required depth, the drill pipe 3 can be pulled out as a whole, the internal coring liner 4 is packaged, the sampling material is a mixture of lunar rock and lunar soil weathering layer particles, the coring liner 4 is taken out and taken back, and the drilling and mining task is completed.

[0044] (2) Sensor monitoring process: in the process of drilling the lunar soil downwardly by rotating the drill pipe 3, the solid casing 2 installed outside the drill pipe 3 moves downwardly synchronously, at this time, the sensor I 204 installed on the solid casing 2 can monitor the temperature information of the drill pipe 3 in real time, when the temperature monitored by the sensor I 204 is too high and exceeds the set threshold value, the rotation of the drill pipe 3 is stopped, and when the temperature is reduced to a reasonable range after the drill pipe 3 is sufficiently cooled, the drill pipe 3 continues to rotate. In addition, the sensor II 502 and the sensor III 506 are pressure sensors, which can measure the pressure information of the whole device when the power transmission mechanism 6 is working, if the monitored pressure is overloaded, the servo motor 601 will stop working; when the power transmission mechanism 6 is working, the sensor IV 508 can measure the torque information in the transmission process in real time, if the torque exceeds the reasonable range, the servo motor 601 will stop working.

[0045] The surface lunar soil drilling and mining integrated device provided by the application can detect the temperature change of the drill pipe in the drilling and mining process in real time by embedding a temperature sensor in the solid casing, the drill pipe has the characteristics of quick installation and quick disassembly, the coring liner can be split to half to sample the surface lunar soil and keep the layered information, and if the drilling and mining integrated device is modified, it can be applied to the Mars and small celestial body sampling tasks.

[0046] The above merely illustrates the embodiments of the present application, but should not be used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, extension, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A device for integrated drilling and sampling of the surface lunar soil, characterized in that, The device comprises a drill bit (1), a solid sleeve (2), a drill rod (3), a coring liner (4), a force sensing mechanism (5) and a power transmission mechanism (6), wherein the drill bit (1) and the drill rod (3) are both hollow structures, the drill bit (1) is detachably installed at the lower end of the drill rod (3) and is used for drilling lunar soil, the upper end of the drill rod (3) is connected with the power transmission mechanism (6), the coring liner (4) is detachably installed inside the drill rod (3) and is used for collecting lunar soil samples, the force sensing mechanism (5) is rotatably installed at the output end of the power transmission mechanism (6), the solid sleeve (2) is sleeved outside the drill rod (3) and is detachably connected with the force sensing mechanism (5) at the upper end, the solid sleeve (2) is provided with a temperature measuring device, and the force sensing mechanism (5) is used for measuring the force and torque information of the drill rod (3) during drilling and mining. The solid sleeve (2) comprises a lower sleeve (201), a middle sleeve (202) and an upper sleeve (203) which are connected in sequence through detachable connecting structures. The detachable connecting structures comprise spring type sockets (207) and stepped plug-in parts (208) which are plug-in matched with the spring type sockets (207). The upper ends of the lower sleeve (201) and the middle sleeve (202) are both provided with spring type sockets (207), and the lower ends of the upper sleeve (203) and the middle sleeve (202) are both provided with stepped plug-in parts (208). The temperature measuring device comprises a sensor I (204), a sensor extension circuit (205) and two temperature measuring parts (206), wherein the sensor I (204) is embedded in a groove formed at the upper end of the upper sleeve (203), the sensor I (204) is connected with the two temperature measuring parts (206) through the sensor extension circuit (205), and the two temperature measuring parts (206) are respectively embedded in grooves formed at the upper ends of the middle sleeve (202) and the upper sleeve (203). 2.The device according to claim 1, characterized in that, The drill bit (1) comprises a drill edge (101), a drill tooth (102) and a drill body (103), wherein the drill body (103) is a hollow structure and is provided with a spiral cutting edge on the outer circumference in the axial direction, a plurality of drill edges (101) and a plurality of drill teeth (102) are alternately arranged on the outer edge of one end of the drill body (103) in the circumferential direction, and the other end of the drill body (103) is threadedly connected with the drill rod (3).

3. The device according to claim 1, characterized in that, The drill rod (3) comprises a lower drill rod (301), a middle drill rod (302) and an upper drill rod (303) which are threadedly connected in sequence, wherein the upper end of the upper drill rod (303) is connected with the power transmission mechanism (6), and the lower end of the lower drill rod (301) is connected with the drill bit (1).

4. The device according to claim 1, characterized in that, The coring liner (4) comprises a lower liner (401), a middle liner (402) and an upper liner (403) which are threadedly connected in sequence, and the lower liner (401), the middle liner (402) and the upper liner (403) all comprise two half pipe bodies which are split in the axial direction and are fixed together through a plurality of buckles (404).

5. The device according to claim 1, characterized in that, The power transmission mechanism (6) comprises a servo motor (601), a speed reducer (602), a shaft coupling (604), a shaft (605), a drill rod connector (607) and a solid sleeve connector (608), wherein the input shaft of the speed reducer (602) is connected with the output shaft of the servo motor (601), the output shaft of the speed reducer (602) is connected with the upper end of the shaft (605) through the shaft coupling (604), and the lower end of the shaft (605) is connected with the drill rod (3) through the drill rod connector (607); the solid sleeve connector (608) is sleeved outside the drill rod connector (607) and connected with the force sensing mechanism (5).

6. The device according to claim 5, characterized in that, The force sensing mechanism (5) comprises a sensor flange I (501), a sensor II (502), a support (503), a fixed sleeve (504), a sensor flange II (505), a sensor III (506) and a torque sensing mechanism, wherein the support (503) is installed inside the fixed sleeve (504), the support (503) is sleeved on the shaft (605), and the support (503) is connected with the shaft (605) through a bearing (606); The sensor flange I (501) is sleeved on the shaft (605) and connected with the drill rod connector (607) at the bottom, and the top of the sensor flange I (501) abuts against the support (503); One end of the sensor II (502) is connected with the sensor flange I (501), and the other end is connected with the fixed sleeve (504); The sensor flange II (505) is placed in the groove provided on the upper part of the support (503) and abuts against the outer ring of the bearing (606), the lower end of the sensor III (506) is connected with the sensor flange II (505), and the upper end is connected with the support (503); The torque sensing mechanism is arranged at the output end of the speed reducer (602) and is used for detecting the transmission torque information of the speed reducer (602).

7. The device according to claim 6, characterized in that, The torque sensing mechanism comprises a fixed part (507) and a sensor IV (508), wherein one end of the sensor IV (508) is connected with an end pad (603) provided at the front end of the speed reducer (602), the fixed part (507) is sleeved on the shaft (605) and connected with the other end of the sensor IV (508); the fixed part (507) is clearance-fitted with the shaft (605).

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