Automatic sampling device for geological and mineral exploration

Abstract

The present invention relates to the technical field of geological and mineral exploration sampling, and in particular to an automatic sampling device for geological and mineral exploration, comprising a mounting seat, wherein a hydraulic mechanism for driving the mounting seat to move up and down is arranged on the upper side of the mounting seat, a motor is fixedly connected inside the mounting seat, an output end of the motor extends downward to the outside of the mounting seat and is fixedly connected to a mounting shaft 1, a sampling mechanism for sampling in ore is arranged at a lower end of the mounting shaft through a connecting shaft, the sampling mechanism comprises a mounting shaft 2 arranged at the lower end of the connecting shaft, an outer cylinder is fixedly connected to the lower end of the mounting shaft 2, and a crushed stone assembly for crushing the ore is arranged at the lower end of the outer cylinder. The sampling mechanism adopted by the present invention has a strong overall structural functionality, adopts a method of digging first and then taking for sampling, can perform rapid sampling of any depth position of the ore in a specific manner, effectively reduces the overall quality of ore sampling, is conducive to improving the accuracy of ore sampling, and facilitates the rapid use of subsequent samples.

Description

Technical Field

[0001] The invention relates to the technical field of geological and mineral exploration sampling, and in particular to an automatic sampling device for geological and mineral exploration. Background Art

[0002] Automatic sampling in geological and mineral exploration refers to the use of automated equipment or systems to complete the collection of rock, soil and other samples during the geological and mineral exploration process. This method can improve work efficiency, reduce manual labor intensity, and at the same time ensure the accuracy and representativeness of sampling.

[0003] Among them, the drilling sampler is the most common automatic sampling device. The drilling sampler is suitable for mineral sampling in hard rock areas. It can adapt to strata of different hardness by selecting different drill bits. In sampling work, the drilling sampler generally uses a coring drill bit.

[0004] The most common type of drilling sampler currently available has a coring drill bit composed of an outer tube and an inner tube. The bottom of the outer tube is provided with cutting blades for cutting stone cores, and the inner tube is located inside the outer tube for collecting stone samples. Although it has a sampling function, sampling is mostly carried out directly from the ground. Considering the differences in geological layers and mineral resource characteristics at different depths, geological and mineral exploration needs to be carried out at different depths. In the existing coring drill bit sampling operation, the overall mass of the stone cores taken out accounts for a large proportion. On the one hand, it is more troublesome to move larger stone cores. On the other hand, when performing sample analysis at a certain depth, the stone cores need to be sorted out for the second time, and unnecessary parts need to be removed. The working steps are relatively cumbersome. There is also a combination of drilling and sampling for sampling at a specified depth, but these two operations are carried out in a distributed manner, and different drill bits need to be used. Replacing the drill bit in the specific operation affects the work efficiency, and the overall work efficiency needs to be improved. Summary of the invention

[0005] Technical problem to be solved: The present invention provides an automatic sampling device for geological and mineral exploration, which can solve the above-mentioned problems.

[0006] Technical solution: In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution, an automatic sampling device for geological and mineral exploration, an automatic sampling device for geological and mineral exploration, including a mounting seat, a hydraulic mechanism for driving it to move up and down is arranged on the upper side of the mounting seat, a motor is fixedly connected inside the mounting seat, the output end of the motor extends downward to the outside of the mounting seat and is fixedly connected to a mounting shaft, and a sampling mechanism for sampling in ore is arranged at the lower end of the mounting shaft through a connecting shaft.

[0007] The sampling mechanism includes an installation shaft 2 arranged at the lower end of the connecting shaft, the lower end of the installation shaft 2 is fixedly connected to an outer cylinder, the lower end of the outer cylinder is provided with a crushing assembly for crushing ore, a circular hole is opened at the center of the lower end of the outer cylinder, four groups of grooves are equidistantly opened on the circumference of the circular hole, a hinge plate is hinged in the groove through a rotating pin, a knife body is integrally fixedly connected to the lower end of the hinge plate, the four groups of knife bodies are combined into a cone shape, an opening and closing assembly for controlling the opening and closing of the four groups of knife bodies is arranged inside the outer cylinder, a material withdrawal spiral is fixedly connected to the outside of the outer cylinder, an inner cylinder is rotatably connected to the center of the inner wall of the upper end of the outer cylinder, the lower end of the inner cylinder is open and faces the circular hole, and the diameter of the inner cylinder is larger than the distance between the two symmetrically distributed rotating pins.

[0008] The opening and closing assembly also includes a locking component for limiting and maintaining the hinge plate after it is rotated to a vertical state, and a joint control component for making the locking component and the mounting plate move in opposite directions is arranged between the locking component and the mounting plate.

[0009] The sampling mechanism can be used to sample the ore at a specified depth.

[0010] As a preferred technical solution of the present invention, the stone crushing assembly includes a stone crushing seat fixedly connected to the lower edge of the outer cylinder at equidistant intervals around the circumference, the stone crushing seat is L-shaped, and a number of diamond particles are fixedly embedded on the outer surface of the stone crushing seat and the outer surface of the cutter body, and the lower end of the cutter body is made of integrated diamond.

[0011] As a preferred technical solution of the present invention, the opening and closing component includes a lifting rod that is limitedly slidably connected to the side of the hinge plate away from the axis of the outer cylinder, the lifting rods are distributed radially along the outer cylinder, the end of the lifting rod away from the axis of the outer cylinder is in sliding contact with a guide block, the guide block is fixedly connected to the inner wall of the outer cylinder, the middle section of the lifting rod is fixedly connected to a second connecting rod, the upper end of the second connecting rod is fixedly connected to a movable sleeve, the movable sleeve is slidably connected to the sliding rod, one end of the sliding rod close to the axis of the outer cylinder is fixedly connected to a limiting plate, a section of the sliding rod between the limiting plate and the movable sleeve is provided with a spring, one end of the sliding rod away from the axis of the outer cylinder is fixedly connected to the mounting plate, the upper ends of the four groups of mounting plates are commonly fixedly connected to the ring frame, the upper side of the ring frame is fixedly connected to the output ends of a number of electric push rods, and the several electric push rods are fixedly connected to the inner wall of the outer cylinder.

[0012] As a preferred technical solution of the present invention, the locking component includes a movable frame vertically corresponding to the center position of the turn pin and located above the hinge plate, the center of the lower end of the movable frame is fixedly connected with a plug column, the center of the upper end of the hinge plate is provided with a docking hole for inserting the plug column, and a guide seat is connected to the movable frame for limited sliding. Two adjacent guide seats are integrally fixedly connected by an arc frame, and each arc frame is fixedly connected to the inner wall of the outer cylinder through a support plate.

[0013] As a preferred technical solution of the present invention, the side of the guide block in contact with the lifting rod is provided with a slope inclined from bottom to top toward the axis of the outer cylinder, the horizontal distance between the slope vertex and the rotating pin is consistent with the length of the lifting rod, and a straight surface is left at the upper end of the slope.

[0014] As a preferred technical solution of the present invention, the joint control component includes a rack 2 fixedly connected to a side of the mounting plate close to the axis of the outer cylinder, and also includes a plurality of connecting rods 1 fixedly connected to a side wall of the movable frame away from the axis of the outer cylinder, and the ends of the plurality of connecting rods 1 away from the movable frame are commonly fixedly connected to a rack 1, and a gear 2 is meshingly connected between the rack 1 and the rack 2, and the gear 2 is rotatably connected to the mounting pin, and two adjacent mounting pins are fixedly connected by a straight plate frame, and each straight plate frame is fixedly connected to the inner wall of the outer cylinder through a support plate.

[0015] As a preferred technical solution of the present invention, a connecting shaft is arranged between the installation shaft one and the installation shaft two, and one end where the connecting shaft, the installation shaft one and the installation shaft two are connected is fixedly connected with a mounting flange, and two contacting adjacent mounting flanges are fixedly connected by a plurality of bolts.

[0016] As a preferred technical solution of the present invention, the inclination angle of the middle section of the blade body and the horizontal direction is smaller than the inclination angle of the middle section of the hinge plate and the horizontal direction.

[0017] Beneficial effects: 1. The opening and closing component and the stone crushing component adopted in the present invention are used together. The ore can be quickly drilled and crushed by the stone crushing component first, and then when it reaches the specified depth, the four groups of cutters are controlled to open by the opening and closing component to perform core sampling. The working steps are compact, and by combining drilling and sampling into one, the sampling efficiency of the specified depth of the ore can be greatly improved.

[0018] 2. The locking component and the joint control component adopted in the present invention are used in combination to perform the locking operation of the hinge plate on the basis of the original drive, and the cutter body is locked in two stages by adopting the method of limiting the lifting rod and cooperating with the plug column and the docking hole, which effectively ensures the stability of the vertical state of the cutter body, ensures the uniqueness of the working state of the cutter body, ensures the strength of the cutter body, can adapt to the high-loss working environment of mine cutting, has a simple overall structure, and has a high-efficiency automatic control effect.

[0019] 3. The sampling mechanism adopted in the present invention has a strong overall functional structure and adopts a method of digging first and then sampling. It can quickly sample any depth of the ore, effectively reduce the overall quality of ore sampling, help improve the accuracy of ore sampling, and facilitate the rapid use of subsequent samples. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1It is a schematic diagram of the three-dimensional structure from the first viewing angle of the present invention.

[0022] Figure 2 It is a three-dimensional structural schematic diagram of the sampling mechanism of the present invention.

[0023] Figure 3 It is a schematic diagram of the cross-sectional structure of the bottom of the outer cylinder of the present invention.

[0024] Figure 4 The present invention Figure 3 Schematic diagram of the enlarged structure of area A in the middle.

[0025] Figure 5 The present invention Figure 3 Schematic diagram of the enlarged structure of area B in the middle.

[0026] Figure 6 It is a schematic diagram of the three-dimensional connection structure of the sampling mechanism of the present invention without the outer cylinder, the ring frame, the electric push rod and the inner cylinder.

[0027] In the figure: 1, mounting seat; 2, motor; 21, mounting shaft 1; 3, connecting shaft; 4, sampling mechanism; 41, mounting shaft 2; 42, mounting flange; 43, outer cylinder; 44, material withdrawal screw; 45, stone crushing assembly; 451, stone crushing seat; 452, diamond particles; 46, knife body; 461, docking hole; 462, hinge plate; 47, inner cylinder; 48, opening and closing assembly; 481, electric push rod; 482, locking component; 4821, plug column; 482 2. Connecting rod one; 4823. Guide seat; 4824. Movable frame; 4825. Arc frame; 483. Joint control component; 4831. Gear two; 4832. Rack one; 4833. Mounting pin; 4834. Rack two; 4835. Straight plate frame; 484. Guide block; 485. Lifting rod; 486. Rotating pin; 487. Spring; 488. Movable sleeve; 489. Mounting plate; 4810. Sliding rod; 4811. Connecting rod two; 4812. Ring frame. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways as defined and covered by the claims.

[0029] See also Figure 1 , an automatic sampling device for geological and mineral exploration, including a mounting seat 1, a hydraulic mechanism for driving the mounting seat 1 to move up and down is arranged on the upper side of the mounting seat 1 (not shown in the figure, using existing hydraulic technology), a motor 2 is fixedly connected to the mounting seat 1, the output end of the motor 2 extends downward to the outside of the mounting seat 1 and is fixedly connected to a mounting shaft 21, and a sampling mechanism 4 for sampling in ore is arranged at the lower end of the mounting shaft 21 through a connecting shaft 3.

[0030] During specific operation, the sampling mechanism 4 is controlled to rise and fall by the hydraulic mechanism, the installation shaft 21 is driven to rotate by the motor 2, and the installation shaft 21 indirectly drives the sampling mechanism 4 to rotate.

[0031] See also Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 The sampling mechanism 4 includes a mounting shaft 41 provided at the lower end of the connecting shaft 3, an outer cylinder 43 is fixedly connected to the lower end of the mounting shaft 41, a crushing assembly 45 for crushing ore is provided at the lower end of the outer cylinder 43, a circular hole is provided at the center of the lower end of the outer cylinder 43, four groups of grooves are equidistantly provided on the circumference of the side of the circular hole, a hinge plate 462 is hinged in the groove through a rotating pin 486, a knife body 46 is integrally fixedly connected to the lower end of the hinge plate 462, and the four groups of knife bodies 46 are combined into a cone shape, an opening and closing assembly 48 for opening and closing control of the four groups of knife bodies 46 is provided inside the outer cylinder 43, a material withdrawal spiral 44 is fixedly connected to the outside of the outer cylinder 43, an inner cylinder 47 is rotatably connected to the center of the inner wall of the upper end of the outer cylinder 43, the lower end of the inner cylinder 47 is open and faces the circular hole, and the diameter of the inner cylinder 47 is larger than the distance between the two symmetrically distributed rotating pins 486.

[0032] During specific operation, the stone core is loaded through the inner cylinder 47. The diameter of the inner cylinder 47 is larger than the distance between the two symmetrically distributed rotating pins 486, that is, the diameter of the inner cylinder 47 is larger than the diameter of the cut stone core. The stone core can smoothly enter the inner cylinder 47, so that the stone core remains in a vertical state, effectively avoiding the stone core from shaking during sampling. During the drilling stage, the inner cylinder 47 is subjected to the friction of the stone core and will stop rotating and adhere to the stone core. At the same time, when the outer cylinder 43 rotates, the material withdrawal screw 44 follows the rotation to continuously bring the crushed stone out of the borehole to avoid the crushed stone affecting the feeding.

[0033] See also Figure 3 and Figure 4 The opening and closing assembly 48 also includes a locking component 482 for limiting and maintaining the hinge plate 462 after it is rotated to a vertical state, and a joint control component 483 is provided between the locking component 482 and the mounting plate 489 for making the two move in opposite directions.

[0034] The sampling mechanism 4 can be used to sample the ore at a specified depth.

[0035] See also Figure 2 The stone crushing assembly 45 includes a stone crushing seat 451 fixedly connected to the lower edge of the outer tube 43 at equidistant intervals around the circumference. The stone crushing seat 451 is L-shaped. A plurality of diamond particles 452 are fixedly embedded on the outer surface of the stone crushing seat 451 and the outer surface of the cutter body 46. The lower end of the cutter body 46 is made of integrated diamond.

[0036] During specific operation, the physical properties of diamond are utilized, and the rotation of the crushing seat 451 and the cutter body 46 drives the diamond particles 452 to drill and grind the ore, thereby achieving the effect of crushing the ore. The tip of the lower end of the cutter body 46 is specially made with diamond. The sharpness and wear resistance of diamond can ensure the cutting of the ore and avoid the breakage of the cutter body 46.

[0037] See also Figure 3 , Figure 5 and Figure 6 The opening and closing assembly 48 includes a lifting rod 485 which is limitedly slidably connected to the side of the hinge plate 462 away from the axis of the outer cylinder 43. The lifting rod 485 is distributed radially along the outer cylinder 43. One end of the lifting rod 485 away from the axis of the outer cylinder 43 is in sliding contact with a guide block 484. The guide block 484 is fixedly connected to the inner wall of the outer cylinder 43. The middle section of the lifting rod 485 is fixedly connected to the second connecting rod 4811. The upper end of the second connecting rod 4811 is fixedly connected to a movable sleeve 488. The movable sleeve 488 is slidably connected to the sliding rod 4810. On the top, one end of the slide rod 4810 close to the axis of the outer cylinder 43 is fixedly connected to the limit plate, a section of the slide rod 4810 between the limit plate and the movable sleeve 488 is provided with a spring 487, and one end of the slide rod 4810 away from the axis of the outer cylinder 43 is fixedly connected to the mounting plate 489, and the upper ends of the four groups of mounting plates 489 are commonly fixedly connected to the ring frame 4812, and the upper side of the ring frame 4812 is fixedly connected to the output ends of a plurality of electric push rods 481, and the plurality of electric push rods 481 are fixedly connected to the inner wall of the outer cylinder 43.

[0038] During specific operation, it is necessary to control the opening and closing of the knife body 46. In the control stage, the electric push rod 481 controls the ring frame 4812 to move up, and the ring frame 4812 drives the mounting plate 489 to pull the slide bar 4810 up. The slide bar 4810 drives the lifting rod 485 to move up through the movable sleeve 488 and the connecting rod 2 4811. Under the guidance of the guide block 484, the lifting rod 485 slides along the slide bar 4810, and at the same time drives the hinge plate 462 to rotate slightly until the hinge plate 462 rotates to a vertical state, thereby realizing the opening of the four groups of knife bodies 46. On the contrary, when the electric push rod 481 controls the ring frame 4812 to move down, under the influence of the rebound force of the spring 487, the lifting rod 485 maintains the fit with the guide block 484, that is, it can pull the hinge plate 462 to return to an inclined state, thereby realizing the closing of the four groups of knife bodies 46.

[0039] See also Figure 3 and Figure 4 and Figure 6The locking component 482 includes a movable frame 4824 which vertically corresponds to the center position of the rotating pin 486 and is located above the hinge plate 462. The center of the lower end of the movable frame 4824 is fixedly connected with a plug column 4821. The center of the upper end of the hinge plate 462 is provided with a docking hole 461 for inserting the plug column 4821. The movable frame 4824 is internally connected with a guide seat 4823 in a limited sliding manner. Two adjacent guide seats 4823 are integrally fixedly connected by an arc frame 4825. Each arc frame 4825 is fixedly connected to the inner wall of the outer cylinder 43 through a support plate.

[0040] During specific operation, the movable frame 4824 is guided in the up and down movement direction by the guide seat 4823 to ensure that the docking hole 461 and the plug post 4821 are accurately aligned.

[0041] See also Figure 5 and Figure 6 The side of the guide block 484 that contacts the lifting rod 485 is provided with a slope inclined from bottom to top toward the axis of the outer cylinder 43. The horizontal distance between the slope vertex and the rotating pin 486 is consistent with the length of the lifting rod 485, and a straight surface is left at the upper end of the slope.

[0042] During specific operation, when the lifting rod 485 is at the top of the slope, the horizontal distance between the lifting rod 485 and the rotating pin 486 is zero. According to the two-point theorem, the hinge plate 462 is currently in a vertical state, and then a straight surface is left at the upper end of the slope, which can maintain the horizontal displacement limit of the lifting rod 485 when the lifting rod 485 continues to move upward, that is, maintain the vertical state of the hinge plate 462, until the plug column 4821 and the hinge plate 462 are fully docked, and the plug column 4821 locks the hinge plate 462 in a vertical state.

[0043] See also Figure 4 and Figure 6 The joint control component 483 includes a rack 2 4834 fixedly connected to a side of the mounting plate 489 close to the axis of the outer cylinder 43, and also includes a plurality of connecting rods 1 4822 fixedly connected to a side wall of the movable frame 4824 away from the axis of the outer cylinder 43, and one end of the plurality of connecting rods 1 4822 away from the movable frame 4824 is commonly fixedly connected to a rack 1 4832, and a gear 2 4831 is meshingly connected between the rack 1 4832 and the rack 2 4834, and the gear 2 4831 is rotatably connected to the mounting pin 4833, and two adjacent mounting pins 4833 are fixedly connected by a straight plate frame 4835, and each straight plate frame 4835 is fixedly connected to the inner wall of the outer cylinder 43 through a support plate.

[0044] During specific operation, when the mounting plate 489 moves up and down, the rack 2 4834 drives the gear 2 4831 to rotate, and the gear 2 4831 drives the rack 1 4832 to perform a movement opposite to the rack 2 4834, and the rack 1 4832 drives the connecting rod 1 4822 to control the movable frame 4824 to perform a movement opposite to the mounting plate 489, thereby realizing automatic control of locking the hinge plate 462 in a vertical state.

[0045] See also Figure 1 and Figure 2 A connecting shaft 3 is arranged between the installation shaft 1 21 and the installation shaft 2 41, and one end where the connecting shaft 3, the installation shaft 1 21 and the installation shaft 2 41 are connected is fixedly connected with a mounting flange 42, and two adjacent mounting flanges 42 are fixedly connected by a plurality of bolts.

[0046] By installing connecting shafts 3 of different lengths, sampling of ore at different depths can be achieved.

[0047] See also Figure 3 The inclination angle of the middle section of the blade body 46 and the horizontal direction is smaller than the inclination angle of the middle section of the hinge plate 462 and the horizontal direction.

[0048] In this state, when the hinge plate 462 is in a vertical state, the distance between the lowermost end of the knife body 46 and the central axis of the outer cylinder 43 is smaller than the distance between the hinge plate 462 and the central axis of the outer cylinder 43, so that the cut stone core only contacts the lowermost end of the knife body 46, reducing the contact area between the stone core and the hinge plate 462 and the knife body 46, ensuring smooth up and down movement of the stone core.

[0049] When in use: S1: Select the location where sampling is required in the ore field, confirm the sampling depth, and then move the device to the sampling location. Then, the motor 2 drives the outer cylinder 43 to rotate, and the rotation of the outer cylinder 43 provides sampling and cutting power. At the same time, the mounting seat 1 is driven to descend through the hydraulic mechanism to control the sampling mechanism 4 to feed into the ore. During feeding and cutting, the diamond particles 452 are driven by the crushing seat 451 and the combined knife body 46 to drill and grind the ore to crush the ore. When the outer cylinder 43 rotates, the material withdrawal spiral 44 follows the rotation to continuously bring the crushed stone out of the drill hole.

[0050] S2: When the hole is drilled to the specified depth, the outer cylinder 43 stops rotating, and the outer cylinder 43 is raised by the hydraulic mechanism for a certain distance to prevent the broken stones from interfering with the rotation of the cutter body 46. Then, the ring frame 4812 is controlled to move upward by the electric push rod 481, and the ring frame 4812 drives the mounting plate 489 to pull the slide bar 4810 upward. The slide bar 4810 drives the lifting rod 485 upward through the movable sleeve 488 and the second connecting rod 4811. Under the guidance of the guide block 484, the lifting rod 485 slides along the slide bar 4810, and at the same time drives the hinge plate 462 to rotate slightly until the hinge plate 462 rotates to a vertical state. State, completing the opening of the four sets of blade bodies 46, and at the same time, when the mounting plate 489 moves up, the rack 2 4834 drives the gear 2 4831 to rotate, and the gear 2 4831 drives the rack 1 4832 to perform a movement opposite to the rack 2 4834, and the rack 1 4832 drives the connecting rod 1 4822 to control the movable frame 4824 to perform a movement opposite to the mounting plate 489, that is, the movable frame 4824 drives the plug post 4821 to move downward, and the movable frame 4824 is guided in the direction of moving up and down by the guide seat 4823, so that the docking hole 461 and the plug post 4821 are accurately aligned.

[0051] S3: Start the rotation and cutting feed of the outer cylinder 43 again. When the outer cylinder 43 is feeding and cutting, due to the opening of the conical structure of the four sets of cutter bodies 46, a blank area that cannot be touched by the cutting structure will appear in the center of its lower end. The entire blank cutting area is circular, and the vertical cutter body 46 rotates around the blank cutting area for cutting. The ore material at the blank cutting area corresponding to the center of the drilling hole will be completely retained and enter the inner cylinder 47.

[0052] S4: When the sampling feeding depth is met, the electric push rod 481 controls the ring frame 4812 to move downward. Under the influence of the rebound force of the spring 487, the lifting rod 485 maintains contact with the guide block 484, which can pull the hinge plate 462 to slowly reset to an inclined state. In the reset stage, the knife body 46 completely cuts the bottom of the stone core. After the cutting is completed, the outer cylinder 43 is lifted out as a whole through the hydraulic mechanism, and then the knife body 46 is opened. The stone core automatically withdraws due to gravity.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic sampling device for geological and mineral exploration, comprising a mounting seat (1), characterized in that: A hydraulic mechanism for driving the mounting seat (1) to move up and down is arranged on the upper side of the mounting seat (1); a motor (2) is fixedly connected inside the mounting seat (1); an output end of the motor (2) extends downward to the outside of the mounting seat (1) and is fixedly connected to a mounting shaft (21); a sampling mechanism (4) for sampling in ore is arranged at the lower end of the mounting shaft (21) via a connecting shaft (3); The sampling mechanism (4) comprises a second mounting shaft (41) arranged at the lower end of the connecting shaft (3), the lower end of the second mounting shaft (41) being fixedly connected to an outer cylinder (43), the lower end of the outer cylinder (43) being provided with a crushing assembly (45) for crushing ore, a circular hole being provided at the center of the lower end of the outer cylinder (43), four groups of grooves being provided at equal intervals on the circumference of the side of the circular hole, a hinge plate (462) being hinged in the groove via a rotating pin (486), and a knife body being integrally fixedly connected to the lower end of the hinge plate (462) (46), the four sets of blade bodies (46) are combined into a cone shape, an opening and closing assembly (48) for controlling the opening and closing of the four sets of blade bodies (46) is arranged inside the outer cylinder (43), a material withdrawal screw (44) is fixedly connected to the outside of the outer cylinder (43), an inner cylinder (47) is rotatably connected to the center of the inner wall of the upper end of the outer cylinder (43), the lower end of the inner cylinder (47) is open and faces the circular hole, and the diameter of the inner cylinder (47) is larger than the distance between the two symmetrically distributed rotating pins (486); The opening and closing assembly (48) comprises a lifting rod (485) which is limitedly slidably connected to a side of the hinge plate (462) away from the axis of the outer cylinder (43); the lifting rod (485) is distributed radially along the outer cylinder (43); one end of the lifting rod (485) away from the axis of the outer cylinder (43) is in sliding contact with a guide block (484); the guide block (484) is fixedly connected to the inner wall of the outer cylinder (43); a middle section of the lifting rod (485) is fixedly connected to a second connecting rod (4811); an upper end of the second connecting rod (4811) is fixedly connected to a movable sleeve (488); the movable sleeve (488) is slidably connected to the sliding rod (4811); 0), one end of the slide rod (4810) close to the axis of the outer cylinder (43) is fixedly connected to the limit plate, a section of the slide rod (4810) between the limit plate and the movable sleeve (488) is provided with a spring (487), one end of the slide rod (4810) away from the axis of the outer cylinder (43) is fixedly connected to the mounting plate (489), the upper ends of the four groups of mounting plates (489) are fixedly connected to the ring frame (4812), the upper side of the ring frame (4812) is fixedly connected to the output ends of a plurality of electric push rods (481), and the plurality of electric push rods (481) are fixedly connected to the inner wall of the outer cylinder (43); The opening and closing assembly (48) further comprises a locking component (482) for limiting and maintaining the hinge plate (462) after it is rotated to a vertical state, and a joint control component (483) for causing the locking component (482) and the mounting plate (489) to move in opposite directions is provided between the locking component (482) and the mounting plate (489); The sampling mechanism (4) can be used to sample the ore at a specified depth.

2. The automatic sampling device for geological and mineral exploration according to claim 1 is characterized in that: The stone crushing assembly (45) comprises a stone crushing seat (451) fixedly connected to the lower edge of the outer cylinder (43) at equidistant intervals around the circumference; the stone crushing seat (451) is L-shaped; a plurality of diamond particles (452) are fixedly embedded in the outer surface of the stone crushing seat (451) and the outer surface of the cutter body (46); and the lower end of the cutter body (46) is made of integrated diamond.

3. The automatic sampling device for geological and mineral exploration according to claim 1 is characterized in that: The locking component (482) comprises a movable frame (4824) vertically corresponding to the center position of the rotating pin (486) and located above the hinge plate (462); a plug post (4821) is fixedly connected to the center of the lower end of the movable frame (4824); a docking hole (461) for inserting the plug post (4821) is provided at the center of the upper end of the hinge plate (462); a guide seat (4823) is limitedly slidably connected inside the movable frame (4824); two adjacent guide seats (4823) are integrally fixedly connected via an arc frame (4825); and each arc frame (4825) is fixedly connected to the inner wall of the outer cylinder (43) via a support plate.

4. The automatic sampling device for geological and mineral exploration according to claim 3 is characterized in that: A side surface of the guide block (484) in contact with the lifting rod (485) is provided with a slope surface inclined from bottom to top toward the axis of the outer cylinder (43), the horizontal distance between the top of the slope surface and the rotating pin (486) is consistent with the length of the lifting rod (485), and a straight surface is left at the upper end of the slope surface.

5. The automatic sampling device for geological and mineral exploration according to claim 4 is characterized in that: The joint control component (483) includes a rack gear 2 (4834) fixedly connected to a side surface of the mounting plate (489) close to the axis of the outer cylinder (43), and also includes a plurality of connecting rods (4822) fixedly connected to a side wall of the movable frame (4824) away from the axis of the outer cylinder (43), wherein one end of the plurality of connecting rods (4822) away from the movable frame (4824) is fixedly connected to a rack gear 1 (4832), a gear gear 2 (4831) is meshingly connected between the rack gear 1 (4832) and the rack gear 2 (4834), and the gear gear 2 (4831) is rotatably connected to the mounting pin (4833), and two adjacent mounting pins (4833) are fixedly connected via a straight plate frame (4835), and each straight plate frame (4835) is fixedly connected to the inner wall of the outer cylinder (43) via a support plate.

6. The automatic sampling device for geological and mineral exploration according to claim 1, characterized in that: A connecting shaft (3) is provided between the first mounting shaft (21) and the second mounting shaft (41); one end of the connecting shaft (3), the first mounting shaft (21) and the second mounting shaft (41) connected are all fixedly connected with a mounting flange (42); two contacting adjacent mounting flanges (42) are fixedly connected by a plurality of bolts.

7. The automatic sampling device for geological and mineral exploration according to claim 1 is characterized in that: The inclination angle of the middle section of the blade body (46) and the horizontal direction is smaller than the inclination angle of the middle section of the hinge plate (462) and the horizontal direction.

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