Lead-silver ore geological exploration sampling method and sampling device

Abstract

The invention provides a lead-silver ore geological exploration sampling method and a sampling device, and relates to the technical field of geological exploration sampling. The lead and silver ore geological exploration sampling method sequentially comprises the following steps of positioning and drilling preparation, circumferential cutting forming of a columnar sample, columnar sample grabbing, columnar sample taking out and device withdrawing. The lead-silver ore geological exploration sampling method can improve the sampling efficiency and the sampling quality of the lead-silver ore. The invention further provides a lead-silver ore geological exploration sampling device which comprises a rack, a moving mechanism, a drill rod, an inner gear ring, a sun gear, a driving shaft and a planet gear. The moving mechanism is used for driving the drill rod to move in the axis direction. The inner gear ring, the sun gear and the planet gears form a planet gear mechanism, each planet gear is coaxially provided with a rotating shaft in a penetrating mode, and one end of each rotating shaft is connected with a drill bit. According to the lead-silver ore geological exploration sampling device, ore bed cutting on the periphery of a columnar sample can be efficiently completed in the sampling process, and the sampling efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of geological exploration sampling, in particular to a lead-silver ore geological exploration sampling method and a sampling device. BACKGROUND

[0002] As an important metal mineral resource, the accuracy and efficiency of the geological exploration of lead-silver ore directly relate to resource assessment, mining planning and economic value determination. In the exploration process, obtaining in-situ, undisturbed and structurally complete columnar rock samples (cores) is crucial for accurately analyzing the occurrence state, grade distribution, mineral composition and geological structure characteristics of the ore body. Traditional geological sampling methods, especially deep sampling, mainly rely on conventional rotary coring drilling technology. This technology uses a diamond drill bit installed at the front end of a hollow drill rod to perform annular cutting, forming a columnar core that enters the core tube, and then the entire drill rod column is lifted to the surface to obtain the sample.

[0003] However, the above method has several significant limitations: 1. The drill bit installed at the end of the hollow drill rod is actually annular, and the columnar sample is cut around the rock layer layer by layer by rotating the drill bit. The cutting work of the rotating drill bit progresses layer by layer, and the cutting efficiency is not high; 2. In the above process, the columnar sample formed in the hollow drill rod is tightly attached to the inner wall of the drill rod under the action of the tangential force of the hollow drill rod due to the cutting of the columnar sample into the hollow drill rod in hard, broken or complex strata (common in lead-silver ore veins). The columnar sample is easily damaged. The columnar sample tightly attached to the inner wall of the drill rod is also prone to blockage, wear and even extrusion fracture, resulting in low coring rate and poor sample quality; 3. After each coring, the drill must be interrupted, the entire drill rod must be pulled out, and the sample must be taken out, which is a tedious and time-consuming process. Especially in deep hole exploration, the auxiliary time far exceeds the pure drilling time, resulting in low efficiency and high cost. In addition, repeated lifting of the drill rod increases the risk of hole wall collapse, threatening the stability of the drill hole and further affecting the sampling efficiency. SUMMARY

[0004] The purpose of the present application is to provide a lead-silver ore geological exploration sampling method that can greatly improve the sampling efficiency and quality of lead-silver ore in geological exploration.

[0005] Another purpose of the present application is to provide a lead-silver ore geological exploration sampling device that can efficiently cut the mineral layer around the columnar sample during geological exploration sampling, greatly improving the sampling efficiency; and can also avoid problems such as blockage, wear and extrusion fracture of the columnar sample, resulting in low coring rate and poor sample quality.

[0006] Embodiments of the present application are implemented as follows: In a first aspect, the embodiments of the present application provide a lead-silver ore geological exploration sampling method, comprising the following steps: S1. Positioning and drilling preparation: Obtaining the columnar sample sampling point and the columnar sample obtaining length, calculating the sampling depth and the sampling direction, selecting a hollow drill rod, and adjusting the position of the drill rod to make the axial direction of the drill rod consistent with the sampling direction; S2. Circumferential cutting and forming of the columnar sample: A plurality of drill bits are arranged around the axial direction of the drill rod, so that the drill bits rotate around the axial direction of the drill rod, and drilling is started. During drilling, the drill bits are driven to move along the axial direction of the drill rod, and each drill bit cuts the ore bed layer by layer along the axial direction of the drill rod under the action of rotation, so that the ore bed forms a cavity structure. When each drill bit revolves, it will fit the side wall of the cavity structure, and the drill bit will continuously cut the side wall of the cavity structure under continuous rotation, so that the ore bed is cut in a ring shape in the circumferential direction of the drill rod. After continuous drilling, the movement trajectories of the plurality of drill bits form a ring-shaped cutting seam in the ore bed, so that a columnar sample with a diameter smaller than the inner diameter of the drill rod is isolated in the ore bed in the axial direction of the drill rod. With the continuous drilling, the columnar sample will enter the inside of the drill rod; S3. Columnar sample grabbing: When drilling to the predetermined depth, the columnar sample that has been cut and separated is grabbed along the axial direction inside the drill rod; S4. Columnar sample removal: After the columnar sample is grabbed, the columnar sample is moved along the axial direction inside the drill rod, and finally removed along the inside of the drill rod. The above steps S2-S4 are repeated to gradually remove columnar samples at different depths. S5. Device withdrawal: After all the columnar samples are removed, the entire sampling device is withdrawn from the drill hole. Once sampling is completed.

[0007] In some embodiments of the present application, after step S3 is completed, the columnar sample is separated from the sample area that has not been cut in a ring shape.

[0008] In some embodiments of the present application, the above predetermined depth is equal to the average value of the sampling depth.

[0009] In a second aspect, the embodiments of the present application provide a lead-silver ore geological exploration sampling device, comprising: A rack; The drilling assembly comprises a moving mechanism, a drill rod, an inner gear ring, a sun gear, a driving shaft and at least one planetary gear, the moving mechanism is arranged on the frame, the moving mechanism is connected with the drill rod and used for driving the drill rod to move along the axial direction, the inner gear ring is coaxially connected with one end of the drill rod, the drill rod and the driving shaft are both in the form of a cylinder, the driving shaft is coaxially arranged in the drill rod, one end of the driving shaft is coaxially connected with the sun gear, and the sun gear is located on the inner side of the inner gear ring, each planetary gear is arranged between the sun gear and the inner gear ring and is in mesh with the sun gear and the inner gear ring, a rotating disc is rotatably arranged in the inner gear ring, a rotating shaft is coaxially arranged on each planetary gear, one end of any rotating shaft is rotatably connected with the rotating disc, and the other end of the rotating shaft is connected with a drill bit; the drill bits form a storage area for accommodating the cut columnar sample along the circumferential direction of the drill rod, the diameter of the storage area is smaller than the inner diameter of the driving shaft, a first through hole is formed in the rotating disc, and the diameter of the first through hole is greater than or equal to the inner diameter of the driving shaft.

[0010] In some embodiments of the present application, the moving mechanism comprises a mounting plate and at least one telescopic cylinder, the mounting plate is fixedly sleeved on the drill rod, the cylinder body of any telescopic cylinder is arranged on the frame, the piston rod of the telescopic cylinder is connected with the mounting plate, and the telescopic direction of the piston rod is parallel to the axial direction of the drill rod.

[0011] In some embodiments of the present application, the driving shaft is connected with a first rotary driving mechanism, the first rotary driving mechanism comprises a driving gear, a driven gear, a connecting shaft and a first driving motor, the driving gear is fixedly sleeved on the connecting shaft, the driven gear is fixedly sleeved on the driving shaft, the driving gear is in mesh with the driven gear, and the output end of the first driving motor is connected with the connecting shaft and used for driving the connecting shaft to rotate.

[0012] In some embodiments of the present application, the drilling assembly further comprises a grabbing assembly, the grabbing assembly comprises a telescopic part and a grabbing part, the grabbing part is arranged in the driving shaft, the telescopic part is connected with the grabbing part and used for driving the grabbing part to freely move along the axial direction of the driving shaft, and the grabbing part can grab the columnar sample.

[0013] In some embodiments of the present application, the telescopic part comprises a lifting mechanism, the lifting mechanism comprises a lifting shaft, one end of the lifting shaft extends into the driving shaft and can freely move along the axial direction of the driving shaft, and one end of the lifting shaft is connected with the grabbing part. The second rotation driving mechanism is connected with the lifting shaft, and comprises a shell, a worm wheel, a worm and a second driving motor.

[0014] In some embodiments of the present application, the inner tooth ring comprises a ring body and an end cover arranged at one end of the cylinder body, the drill rod is fixedly connected with the end cover, a second through hole is formed in the end cover, the diameter of the second through hole is larger than the inner diameter of the driving shaft, and an annular inner tooth is arranged on the inner surface of the ring body and matched with the planetary gear.

[0015] In some embodiments of the present application, two parallel limiting rings are arranged on the inner wall of the ring body in the circumferential direction, a sliding groove is formed between the two limiting rings, and the rotating disc is arranged in the sliding groove in the circumferential direction.

[0016] Compared with the prior art, the embodiments of the present application have at least the following advantages or beneficial effects: The present application provides a lead-silver ore geological exploration sampling method, which can drive the drill bit to rotate in the axial direction of the drill rod and revolve in the circumferential direction of the drill rod, so that the end surface of the drill bit moves along the axial direction under the action of rotation to cut the ore bed, and the side surface of the drill bit also moves in the circumferential direction to cut. In this way, the end surface and the side surface of the drill bit form multi-surface cutting, which greatly improves the cutting efficiency. At the same time, when the drill bit is drilling, the cutting path of the drill bit in the ore bed is actually a spiral path, and multiple drill bits simultaneously spiral and continuously drill, which can further improve the cutting efficiency. In addition, through the cutting of multiple drill bits, a columnar sample with a diameter smaller than the inner diameter of the drill rod can be isolated in the ore bed in the axial direction of the drill rod. As the drilling continues, the columnar sample will enter the hollow drill rod, and the diameter of the columnar sample entering the drill rod is obviously smaller than the inner diameter of the drill rod, which avoids the problems of blockage, wear and damage of the columnar sample caused by the close contact between the columnar sample and the inner wall of the drill rod, and improves the sampling quality.

[0017] Another object of the present application is to provide a lead-silver ore geological exploration sampling device, which comprises: The drilling assembly is used for realizing drilling cutting of the ore bed, the sun gear, the inner gear ring and the planetary gear constitute a planetary gear mechanism, the sun gear is driven to rotate through the driving shaft, so that the planetary gear completes rotation and revolution, the planetary gear drives the corresponding rotating shaft to rotate and revolve in the process of rotation and revolution, thereby driving the corresponding drill bit of the rotating shaft to rotate and revolve.

[0018] With the drilling continuing, the columnar sample enters the inside of the driving shaft in the cylinder structure. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some of the embodiments of the present application, and therefore should not be regarded as a limitation to the scope, and for those of ordinary skill in the art, other related drawings can also be obtained without creative labor under the premise of these drawings.

[0020] Figure 1 The structural schematic diagram of the embodiment of the present application is shown in the figure. Figure 2 The enlarged view of A in the figure. Figure 1 The enlarged view of A in the figure. Figure 3 The mounting structure schematic diagram of the planetary gear in the embodiment of the present application is shown in the figure. Figure 4 The mounting structure schematic diagram of the drill bit in the embodiment of the present application is shown in the figure. Figure 5 The three-dimensional explosion diagram of the drilling assembly in the embodiment of the present application is shown in the figure. Figure 6 The mounting structure schematic diagram of the first rotary driving mechanism in the embodiment of the present application is shown in the figure. Figure 7 The mounting structure schematic diagram of the rotating disc in the embodiment of the present application is shown in the figure. Figure 8 The mounting structure schematic diagram of the second rotary driving mechanism in the embodiment of the present application is shown in the figure.

[0021] Figure: 1 - rack; 2 - drill rod; 3 - inner gear ring; 301 - ring body; 302 - end cover; 303 - annular inner teeth; 304 - second through hole; 4 - sun gear; 5 - drive shaft; 6 - planetary gear; 7 - rotating disc; 8 - storage area; 9 - first through hole; 10 - rotating shaft; 11 - telescopic cylinder; 12 - mounting plate; 13 - driving gear; 14 - driven gear; 15 - connecting shaft; 16 - first drive motor; 17 - support; 18 - base; 19 - lifting shaft; 20 - grabbing part; 21 - shell; 22 - worm gear; 23 - worm; 24 - second drive motor; 25 - limiting ring; 26 - sliding groove; 27 - drill bit. DETAILED DESCRIPTION

[0022] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings of the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0024] EMBODIMENT Please refer to Figures 1-8 The embodiment provides a lead-silver ore geological exploration sampling device, which comprises a rack 1 and a drilling assembly. The drilling assembly comprises a moving mechanism, a drill rod 2, an inner gear ring 3, a sun gear 4, a drive shaft 5 and at least one planetary gear 6. The moving mechanism is arranged on the rack 1 and connected with the drill rod 2, and is used to drive the drill rod 2 to move along the axial direction. The inner gear ring 3 is coaxially connected with one end of the drill rod 2. The drill rod 2 and the drive shaft 5 are both in the form of a cylinder. The drive shaft 5 is coaxially arranged in the drill rod 2 and coaxially connected with the sun gear 4 at one end. The sun gear 4 is located on the inner side of the inner gear ring 3. Each planetary gear 6 is arranged between the sun gear 4 and the inner gear ring 3 and is engaged with the sun gear 4 and the inner gear ring 3, respectively. A rotating disc 7 is rotatably arranged in the inner gear ring 3. A rotating shaft 10 is coaxially arranged on each planetary gear 6. One end of any rotating shaft 10 is rotatably connected with the rotating disc 7, and the other end is connected with a drill bit 27. The drill bits 27 form a storage area 8 for accommodating the cut columnar samples along the circumferential direction of the drill rod 2. The diameter of the storage area 8 is smaller than the inner diameter of the drive shaft 5. A first through hole 9 is formed in the rotating disc 7, and the diameter of the first through hole 9 is greater than or equal to the inner diameter of the drive shaft 5.

[0025] The drilling assembly is used to realize the drilling cutting of the ore bed. The sun gear 4, the inner ring gear 3 and the planetary gear 6 constitute a planetary gear 6 mechanism. The sun gear 4 is driven to rotate by the driving shaft 5, so that the planetary gear 6 completes rotation and revolution. In the process of rotation and revolution, the planetary gear 6 drives the corresponding rotating shaft 10 to rotate and revolve, thereby driving the corresponding drill bit 27 of the rotating shaft 10 to rotate and revolve. The moving mechanism is used to drive the drill rod 2 to ascend and descend with the rack 1 as the reference, thereby indirectly driving the drill bit 27 to complete the movement in the axial direction of the drill rod 2. In this way, the end surface of the drill bit 27 can be moved in the axial direction under the action of rotation to cut the ore bed, and the side surface of the drill bit 27 can also complete the movement in the circumferential direction of the drill rod 2 to cut the ore bed. The end surface and the side surface of the drill bit 27 form multi-surface cutting, which can greatly improve the cutting efficiency. At the same time, the cutting path of the drill bit 27 in the ore bed is actually a spiral path during the drilling work. The simultaneous spiral continuous drilling of multiple drill bits 27 can further improve the cutting efficiency.

[0026] As the drilling continues, the columnar sample will enter the inside of the driving shaft 5 which is a cylindrical structure. Since the diameter of the storage area 8 is smaller than the inner diameter of the driving shaft 5, the diameter of the columnar sample entering the inside of the driving shaft 5 is obviously smaller than the inner diameter of the driving shaft 5, which avoids the problems of blockage, wear and damage of the columnar sample caused by the close contact between the columnar sample and the inner wall of the drill rod 2; and also avoids the problem of the columnar sample being easily broken by a large torque caused by the resistance formed between the columnar sample and the inner wall of the driving shaft 5. Therefore, the sampling quality and the efficiency of removing the columnar sample from the driving shaft 5 can be improved.

[0027] It should be noted that the rotating disc 7 is used to install the rotating shaft 10, so that the rotating shaft 10 rotates thereon to ensure that the rotating shaft 10 can realize rotation. At the same time, the rotating disc 7 is rotationally arranged in the inner ring gear 3, so that the rotating disc 7 can rotate around the axis of the driving shaft 5 to realize the revolution of the rotating shaft 10. The first through hole 9 formed in the rotating disc 7 can facilitate the passing of the driving shaft 5.

[0028] Please refer to Figure 4 and Figure 5 In this embodiment, the end part of the drill bit 27 in contact with the ore bed is in a conical structure, and the end surface thereof is provided with a cutting tool. Similarly, the side wall of the drill bit 27 is also provided with a cutting tool.

[0029] Please refer to Figure 1 and Figure 2Further, in the embodiment, the moving mechanism includes the mounting plate 12 and at least one telescopic cylinder 11, the mounting plate 12 is fixedly sleeved on the drill rod 2, the cylinder body of any telescopic cylinder 11 is arranged on the rack 1, the piston rod of the telescopic cylinder 11 is connected with the mounting plate 12, and the telescopic direction of the piston rod is parallel to the axis direction of the drill rod 2. The telescopic action of the telescopic cylinder 11 can drive the mounting plate 12 to move along the axis direction of the drill rod 2, and further drive the drill rod 2 and the sampling assembly connected with the drill rod 2 to perform the lifting movement. During the lifting process of the drill rod 2, the drill bit 27 is indirectly lifted, so that the drill bit 27 moves along the axis direction of the drill rod 2.

[0030] Please refer to Figure 6 Further, in the embodiment, the driving shaft 5 is connected with a first rotary driving mechanism, and the first rotary driving mechanism is used to drive the driving shaft 5 to rotate. Specifically, the first rotary driving mechanism includes a driving gear 13, a driven gear 14, a connecting shaft 15 and a first driving motor 16, the driving gear 13 is fixedly sleeved on the connecting shaft 15, the driven gear 14 is fixedly sleeved on the driving shaft 5, the driving gear 13 is engaged with the driven gear 14, and the output end of the first driving motor 16 is connected with the connecting shaft 15, so as to drive the connecting shaft 15 to rotate.

[0031] When the first driving motor 16 is started, the output end of the first driving motor 16 drives the connecting shaft 15 to rotate. Since the driving gear 13 is fixedly sleeved on the connecting shaft 15, the driving gear 13 rotates with the connecting shaft 15. Since the driving gear 13 is engaged with the driven gear 14, the driven gear 14 rotates under the driving of the driving gear 13. Since the driven gear 14 is fixedly sleeved on the driving shaft 5, the driving shaft 5 also rotates with the driven gear 14. The first rotary driving mechanism drives the driving shaft 5 to rotate, so as to realize the revolution and rotation of the rotating shaft 10, and provide stable power support for subsequent sampling operation.

[0032] Please refer to Figure 4In the embodiment, the lead-silver ore geological exploration sampling device further comprises a grabbing assembly, the grabbing assembly comprises a telescopic part and a grabbing part 20, the grabbing part 20 is arranged in the driving shaft 5, and the telescopic part is connected with the grabbing part 20 and used for driving the grabbing part 20 to move to the columnar sample along the axis direction of the driving shaft 5, so that the grabbing part 20 can grab the columnar sample. The specific structure of the grabbing part 20 can comprise a pair of oppositely arranged clamping jaws, and a grabbing space for accommodating the columnar sample is formed between the clamping jaws. When the telescopic part drives the grabbing part 20 to move to the target position along the axis direction of the driving shaft 5, the clamping jaws extend into the gap between the columnar sample and the inner wall of the driving shaft 5. Then the clamping jaws are closed, so as to grab the columnar sample. In order to enhance the stability of grabbing, the inner side of the clamping jaws can be provided with anti-skid lines or elastic materials, so as to improve the friction between the columnar sample and the clamping jaws and prevent the columnar sample from slipping off during sampling. After the columnar sample is grabbed, the columnar sample is lifted by the telescopic part and then taken out from the other end of the driving shaft 5. In this way, the columnar sample can be taken out without rotating and taking out the drill rod 2, and the sampling efficiency is further improved. The risk of hole wall collapse caused by repeated lifting of the drill rod 2 is also avoided, which threatens the stability of the drilling hole and further affects the sampling efficiency.

[0033] It should be noted that, in order to ensure that the cut mineral layer can be smoothly discharged, in the embodiment, before the grabbing part 20 grabs the columnar sample, the external pipeline can be inserted into the cutting position along the driving shaft 5 and inject liquid. The liquid will mix the cut material under a certain pressure and then take it out along the driving shaft 5. At the same time, the liquid can also have a cooling effect to avoid overheating.

[0034] Please refer to Figure 1 , Figure 4 , Figure 6 and Figure 8 , specifically, in the embodiment, the telescopic part comprises a lifting mechanism, the lifting mechanism comprises a lifting shaft 19, one end of the lifting shaft 19 extends into the driving shaft 5 and can freely move along the axis direction of the driving shaft 5, and one end of the lifting shaft 19 is connected with the grabbing part 20; the lifting shaft 19 is connected with a second rotary driving mechanism, the second rotary driving mechanism comprises a housing 21, a worm wheel 22, a worm 23 and a second driving motor 24, the housing 21 is arranged on the rack 1, the lifting shaft 19 penetrates through the housing 21 and is threadedly connected with the housing 21, the worm wheel 22 is rotationally arranged in the housing 21 and is sleeved on the lifting shaft 19, the worm wheel 22 is threadedly connected with the lifting shaft 19, one end of the worm 23 extends into the housing 21 and is engaged with the worm wheel 22, and the output end of the second driving motor 24 is connected with the worm 23 and used for driving the worm 23 to rotate.

[0035] When the second driving motor 24 is started, its output end will drive the worm 23 to rotate. Since the worm 23 is engaged with the worm gear 22, the rotation of the worm 23 will drive the worm gear 22 to rotate. The worm gear 22 is sleeved on the lifting shaft 19 and is threadedly connected with the lifting shaft 19, so the rotation of the worm gear 22 will be converted into the linear movement of the lifting shaft 19. This threaded connection mode enables the lifting shaft 19 to move freely and stably along the axis direction of the driving shaft 5.

[0036] One end of the lifting shaft 19 is connected with the grabbing part 20, so when the lifting shaft 19 moves, the grabbing part 20 will move together. In this way, by controlling the rotation of the second driving motor 24, the position of the grabbing part 20 along the axis direction of the driving shaft 5 can be accurately controlled, so as to realize the function of moving the grabbing part 20 to the columnar sample to grab the columnar sample.

[0037] In addition, since the lifting shaft 19 is threadedly connected with the shell 21, this structure not only provides stable linear movement, but also has self-locking function. When the second driving motor 24 stops working, the lifting shaft 19 will not move randomly due to gravity or other external forces, thereby ensuring the self-locking property and reliability of the sampling device.

[0038] It is worth mentioning that in the embodiment, the first driving motor 16 is arranged on the mounting plate 12, and the driving shaft 5 is rotatably arranged on the mounting plate 12 through a bearing and a bearing seat, so that the first rotary driving mechanism can move with the drill rod 2 when the first driving motor 16 drives the driving shaft 5 to rotate. Similarly, the mounting plate 12 is provided with a support 17, the support 17 is provided with a base 18, the shell 21 is arranged on the base 18, and the worm 23 is rotatably arranged on the base 18 through a bearing and a bearing seat. Finally, after the second driving motor 24 is fixed on the base 18, the second rotary driving mechanism can rotate with the drill rod 2 when driving the lifting shaft 19 to lift.

[0039] In other embodiments, the telescopic part can also use driving elements such as electric push rods, air cylinders or hydraulic cylinders to realize the rapid and accurate movement of the grabbing part 20. The electric push rod has the characteristics of compact structure and easy control, and is suitable for accurately controlling the movement distance and speed of the grabbing part 20; the air cylinder has the advantages of powerful power and rapid response, and is suitable for occasions requiring large grabbing force or rapid response; the hydraulic cylinder has high stability and load capacity, and is suitable for grabbing columnar samples with large weight.

[0040] Please refer to Figure 4 and Figure 5In some embodiments of the present application, the inner ring gear 3 comprises a ring body 301 and an end cover 302 arranged at one end of the cylinder body, the drill rod 2 is fixedly connected with the end cover 302, the second through hole 304 is formed in the end cover 302, the diameter of the second through hole 304 is greater than the inner diameter of the driving shaft 5, and the inner surface of the ring body 301 is circumferentially provided with the annular inner teeth 303 matched with the planetary gear 6. The end cover 302 enables the inner ring gear 3 to be firmly connected with the drill rod 2, and at the same time, the annular inner teeth 303 are engaged with the planetary gear 6 to transmit torque and drive the drill rod 2 to rotate. The second through hole 304 not only provides space for the columnar sample to pass through, but also ensures the relative position between the driving shaft 5 and the inner ring gear 3 to be stable, thereby avoiding the problem of inaccurate sampling caused by the shaking of the driving shaft 5.

[0041] Preferably, the inner wall of the ring body 301 is circumferentially provided with two parallel limiting rings 25, the sliding groove 26 is formed between the two limiting rings 25, and the rotating disc 7 is circumferentially slidably arranged in the sliding groove 26. The sliding groove 26 formed by the limiting ring 25 can facilitate the circumferential rotation of the rotating disc 7.

[0042] Embodiment 2 The embodiment provides a lead-silver ore geological exploration sampling method, which comprises the following steps: S1. Positioning and drilling preparation: The columnar sample sampling point and the columnar sample length are obtained, the sampling depth and the sampling direction are calculated, the hollow drill rod is selected, and the position of the drill rod is adjusted so that the axial direction of the drill rod is consistent with the sampling direction; S2. Circumferential cutting and forming of the columnar sample: A plurality of drill bits are arranged around the axial direction of the drill rod, the drill bits are self-rotated, and the drill bits are revolved around the axial direction of the drill rod to start drilling; in the drilling process, the drill bits are driven to move along the axial direction of the drill rod, each drill bit cuts the ore bed in layers along the axial direction of the drill rod under the action of self-rotation, so that the ore bed forms a cavity structure; each drill bit will fit the side wall of the cavity structure when revolving, and the drill bit continuously cuts the side wall of the cavity structure under the action of continuous self-rotation, so that the ore bed is circularly cut in the circumferential direction of the drill rod; after continuous drilling, the movement tracks of the plurality of drill bits form an annular cutting seam in the ore bed, so that a columnar sample with a diameter smaller than the inner diameter of the drill rod is isolated in the ore bed in the axial direction of the drill rod, and the columnar sample will enter the inside of the drill rod as the drilling continues; S3. Columnar sample grabbing: When drilling to the predetermined depth, the columnar sample that has been cut and separated is grabbed firmly in the axial direction of the inside of the drill rod; and the columnar sample is separated from the sample area which has not been circularly cut S4. Columnar sample taking out: After the columnar sample is gripped, the columnar sample is moved along the internal axis of the drill pipe, and finally removed from the drill pipe. The steps S2-S4 are repeated to gradually remove columnar samples at different depths. S5. The device is withdrawn: After all the columnar samples are removed, the entire sampling device is withdrawn from the drill hole, and a sampling operation is completed.

[0043] In some embodiments of the present embodiment, the predetermined depth is equal to the average value of the sampling depth. In this way, the ore bed can be cored in segments. The columnar samples are sequentially labeled, which can indicate samples at different depth segments.

[0044] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Various modifications and changes can be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method of sampling for lead-silver ore exploration, characterized by, The method comprises the following steps: S1. Positioning and drilling preparation: Obtaining the sampling point and the length of the columnar sample, calculating the sampling depth and direction, selecting a hollow drill rod, and adjusting the position of the drill rod to make the axis direction of the drill rod consistent with the sampling direction; S2. Circumferential cutting and shaping of the columnar sample: A plurality of drill bits are arranged around the axis direction of the drill rod, and the drill bits rotate around the axis direction of the drill rod. During drilling, the drill bits are moved along the axis direction of the drill rod, and each drill bit cuts the ore bed layer by layer along the axis direction of the drill rod under the action of rotation, so that the ore bed forms a cavity structure. When each drill bit revolves, it will fit the side wall of the cavity structure, and the drill bit will continuously cut the side wall of the cavity structure under continuous rotation, thereby cutting the ore bed in a ring shape in the circumferential direction of the drill bit. After continuous drilling, the movement tracks of the plurality of drill bits form a ring-shaped cutting seam in the ore bed, thereby isolating a columnar sample with a diameter smaller than the inner diameter of the drill rod in the ore bed in the axis direction of the drill rod. As drilling continues, the columnar sample will enter the inside of the drill rod; S3. Columnar sample grabbing: When drilling to a predetermined depth, the columnar sample that has been cut and separated is grabbed along the inside of the drill rod in the axial direction; S4. Columnar sample removal: After the columnar sample is grabbed, the columnar sample is moved along the inside of the drill rod in the axial direction, and finally removed along the inside of the drill rod. The above steps S2-S4 are repeated to gradually remove columnar samples at different depths; S5. Device withdrawal: After all the columnar samples are removed, the entire sampling device is withdrawn from the drill hole; and one sampling operation is completed.

2. The galena ore prospecting sampling method according to claim 1, characterized by, After step S3 is completed, the columnar sample is separated from the sample area that has not been ring-cut.

3. The galena ore prospecting sampling method according to claim 1, characterized by, The predetermined depth is equal to the average value of the sampling depth.

4. A lead-silver ore geological exploration sampling device, characterized in that, It comprises: a rack; a drilling assembly; comprising a moving mechanism, a drill rod, an inner gear ring, a sun gear, a drive shaft and at least one planetary gear, the moving mechanism is arranged on the rack, the moving mechanism is connected with the drill rod, and is used for driving the drill rod to move along the axis direction, the inner gear ring is coaxially connected with one end of the drill rod, the drill rod and the drive shaft are both cylindrical structures, the drive shaft is coaxially arranged in the drill rod, one end of the drive shaft is coaxially connected with the sun gear, and the sun gear is located on the inner side of the inner gear ring, each planetary gear is arranged between the sun gear and the inner gear ring, and is respectively meshed with the sun gear and the inner gear ring, a rotating disc is rotatably arranged in the inner gear ring, a rotating shaft is coaxially arranged on each planetary gear, one end of any rotating shaft is rotatably connected with the rotating disc, and the other end is connected with a drill bit; the drill bits form a storage area for accommodating the cut columnar sample along the circumferential direction of the drill rod, the diameter of the storage area is smaller than the inner diameter of the drive shaft, a first through hole is formed in the rotating disc, and the diameter of the first through hole is greater than or equal to the inner diameter of the drive shaft.

5. The galena geological exploration sampling device according to claim 4, characterized in that, The moving mechanism comprises a mounting plate and at least one telescopic cylinder, the mounting plate is fixedly sleeved on the drill rod, the cylinder body of any telescopic cylinder is arranged on the rack, the piston rod of the telescopic cylinder is connected with the mounting plate, and the telescoping direction of the piston rod is parallel to the axial direction of the drill rod.

6. The galena geological exploration sampling device according to claim 4, characterized in that, The driving shaft is connected with a first rotary driving mechanism, the first rotary driving mechanism comprises a driving gear, a driven gear, a connecting shaft and a first driving motor, the driving gear is fixedly sleeved on the connecting shaft, the driven gear is fixedly sleeved on the driving shaft, the driving gear is engaged with the driven gear, and the output end of the first driving motor is connected with the connecting shaft and used for driving the connecting shaft to rotate.

7. The galena geological exploration sampling device according to claim 4, characterized in that, The device further comprises a grabbing assembly, the grabbing assembly comprises a telescopic part and a grabbing part, the grabbing part is arranged in the driving shaft, the telescopic part is connected with the grabbing part and used for driving the grabbing part to freely move along the axial direction of the driving shaft, and the grabbing part can grab a columnar sample.

8. The galena geological exploration sampling device according to claim 7, characterized in that, The telescopic part comprises a lifting mechanism, the lifting mechanism comprises a lifting shaft, one end of the lifting shaft extends into the driving shaft and can freely move along the axial direction of the driving shaft, and one end of the lifting shaft is connected with the grabbing part. The lifting shaft is connected with a second rotary driving mechanism, the second rotary driving mechanism comprises a housing, a worm wheel, a worm and a second driving motor, the housing is arranged on the rack, the lifting shaft penetrates through the housing and is threadedly connected with the housing, the worm wheel is rotationally arranged in the housing and is sleeved on the lifting shaft, the worm wheel is threadedly connected with the lifting shaft, one end of the worm extends into the housing and is engaged with the worm wheel, and the output end of the second driving motor is connected with the worm and used for driving the worm to rotate.

9. The galena geological exploration sampling device according to claim 4, characterized in that, The inner tooth ring comprises a ring body and an end cover arranged at one end of the cylinder body, the drill rod is fixedly connected with the end cover, a second through hole is formed in the end cover, the diameter of the second through hole is greater than the inner diameter of the driving shaft, and the inner surface of the ring body is circumferentially provided with an annular inner tooth matched with the planetary wheel.

10. The galena geological exploration sampling device according to claim 9, characterized in that, Two parallel limiting rings are circumferentially arranged on the inner wall of the ring body, a sliding groove is formed between the two limiting rings, and the rotating disc is circumferentially and slidingly arranged in the sliding groove.

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