Geochemical exploration survey device based on unmanned aerial vehicle

Abstract

The invention relates to the technical field of chemical exploration survey, in particular to an unmanned aerial vehicle-based chemical exploration survey device, which comprises a mounting plate fixedly mounted at the bottom of an unmanned aerial vehicle, a mounting cylinder arranged on the mounting plate and a mounting disc slidably mounted in the mounting cylinder, and an inner cylinder, an outer cylinder and a mounting ring positioned between the inner cylinder and the outer cylinder arranged on the mounting disc, drilling teeth with the same inclination direction are arranged at the bottoms of the inner cylinder and the outer cylinder correspondingly, and a plurality of pairs of sliding blocks are arranged on the mounting ring. According to the chemical exploration survey device based on the unmanned aerial vehicle, when the inner cylinder moves downwards by the preset height, the sliding blocks move along the annular grooves in the mounting ring, the sliding blocks and the cutting lines are switched from the first state to the second state, the cutting lines move to cut off a soil sample in the inner cylinder and soil in a farmland, and the multiple cutting lines are distributed in a staggered mode to form a net shape; a soil sample in the sampling barrel can be well held, and the soil sample is prevented from excessively falling off from the sampling barrel in the moving process of the unmanned aerial vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of geochemical exploration, and in particular to a geochemical exploration device based on an unmanned aerial vehicle. Background Art

[0002] Soil testing is an important part of regional geochemical exploration. It involves sampling the soil in the area, inspecting the soil samples, and using them to determine the condition of the soil.

[0003] According to the publication (announcement) number CN112304708A, the publication (announcement) date is 2021-02-02, a contaminated soil sampling device is disclosed, including a buffer air cushion, a sampling box is provided above the buffer air cushion, a top plate is provided on the top of the sampling box, a drone is fixed on the top plate, a driving mechanism is provided in the sampling box, the driving mechanism is connected to a rotating block, a first electric cylinder is connected to the rotating block, a fixed sleeve is provided at the end of the first electric cylinder, a sampling tube is slidably fitted in the fixed sleeve, a pressing plate is provided on the top of the sampling tube, a first spring is provided between the pressing plate and the fixed sleeve, and a second electric cylinder is provided at the bottom of the top plate. The device can fly above the mud shoal with the help of a drone, and land on the mud with the help of a buffer air cushion. The sampling of the sampling tube can be realized by using a multi-stage telescopic structure. With the help of a rotating motor and a rotating disk design, different sampling inner tubes can be selected for soil sampling. In view of the problem that mud is easy to block the pipe mouth, the mud is sucked in with the help of negative pressure to complete the soil sampling work.

[0004] In the prior art including the above patents, the soil in the farmland is the focus of regional geochemical exploration. However, due to the influence of crops in the farmland, it is not convenient for inspectors to enter the farmland at any time. Random entry can easily damage the crops. Therefore, in many cases, drones are used for soil sampling. The drones fly to the designated area for sampling. Most of the existing drone soil sampling work is done through electric cylinders and sampling tubes. However, when the sampling tube is inserted into the soil, the soil in the sampling tube is still connected to the farmland, and it is difficult for the drone to directly take out the soil sample through the sampling tube. Summary of the invention

[0005] The purpose of the present invention is to provide a geochemical exploration device based on an unmanned aerial vehicle, aiming to solve the above-mentioned problems.

[0006] In order to achieve the above-mentioned object, the present invention provides a geochemical exploration device based on a drone, comprising a mounting plate fixedly mounted on the bottom of the drone, a mounting tube and a mounting plate slidably mounted in the mounting tube are arranged on the mounting plate, an inner tube and an outer tube and a mounting ring located between the inner tube and the outer tube are arranged on the mounting plate, the bottoms of the inner tube and the outer tube are respectively provided with drill teeth with the same inclination direction, a plurality of pairs of sliders are arranged on the mounting ring, and a cutting line is arranged between a pair of sliders, wherein:

[0007] The inner cylinder is driven to rotate so that the outer cylinder rotates in the opposite direction, and the inner cylinder moves downward by a predetermined height so that the plurality of pairs of sliders move and the cutting lines between the sliders extend into the inner cylinder.

[0008] Preferably, a movable ring for supporting the drill teeth on the inner cylinder is rotatably provided on the outer cylinder, and a connecting block extending into the inner cylinder is provided on the movable ring.

[0009] Preferably, a driving rod is provided on the inner cylinder, passing through the mounting plate and being threadedly connected to the mounting cylinder, and the driving rod is rotated to rotate the inner cylinder and move the mounting plate downward.

[0010] Preferably, a synchronous sleeve for driving the outer cylinder to rotate is provided on the driving rod, and the synchronous sleeve can make the outer cylinder stationary or rotate with the inner cylinder.

[0011] Preferably, a dial for pushing the synchronous sleeve is provided inside the mounting plate, and the dial moves the synchronous sleeve to decouple from the driving rod.

[0012] Preferably, a shifting ring for driving the slider to move is movably provided on the mounting plate, and the shifting ring rotates relative to the mounting ring to move the slider and extend the cutting line into the inner cylinder.

[0013] Preferably, a locking block for fixing the mounting cylinder and a wedge block for pushing the connecting block to move are provided on the outer cylinder, and the outer cylinder is lowered to a predetermined height to move the locking block and the wedge block.

[0014] Preferably, the pull ring is movably provided with an insert block for fixing it to the inner cylinder, and the inner cylinder is provided with a plurality of grooves adapted to the insert block.

[0015] Preferably, the dial ring is provided with a movable rod abutting against the bottom of the mounting plate, the movable rod is provided with a traction block for pulling the plug block, and the bottom of the mounting plate is provided with an electromagnet for attracting the traction block.

[0016] Preferably, a through hole adapted to the movable rod is formed on the mounting plate, and the dial extends into the through hole.

[0017] In the above technical scheme, a geochemical exploration device based on a drone provided by the present invention has the following beneficial effects: when taking soil samples in farmland, the staff controls the drone to fly to a predetermined area and gradually lands the drone, the supporting legs support the mounting plate and the drone, the inner cylinder and the outer cylinder are staggered with the crops, and then the inner cylinder is controlled to rotate, the inner cylinder drives the outer cylinder to rotate, and the rotation direction of the outer cylinder is opposite to that of the inner cylinder, the inclined drill teeth on the outer cylinder push the soil under the outer cylinder outward, and the inclined drill teeth on the inner cylinder push the soil under the inner cylinder inward, so that the sampling cylinder composed of the inner cylinder and the outer cylinder can drill into the soil, and The drone and the mounting plate provide sufficient downward pressure for the sampling tube. At this time, the slider and the cutting line are in the first state, and the cutting line will not affect the movement of the sampling tube; when the inner tube moves down to a predetermined height (i.e., the depth of the inner tube embedded in the soil, the surface soil sampling depth is about 20 cm), the slider moves along the annular groove on the mounting ring, and the slider and the cutting line switch from the first state to the second state. The movement of the cutting line cuts off the soil sample in the inner tube from the soil in the farmland, and multiple cutting lines are staggered and distributed in a mesh shape, which can well hold the soil sample in the sampling tube and prevent the soil sample from falling too much from the sampling tube during the movement of the drone. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 A schematic diagram of the overall structure provided for an embodiment of the present invention;

[0020] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0021] Figure 3 A schematic diagram of the internal structure of a mounting tube provided in an embodiment of the present invention;

[0022] Figure 4 A schematic diagram of the structure of an inner cylinder provided in an embodiment of the present invention;

[0023] Figure 5 A schematic diagram of the internal structure of the installation disk provided in an embodiment of the present invention;

[0024] Figure 6 A schematic diagram of the structure of a synchronization ring provided by an embodiment of the present invention;

[0025] Figure 7 A schematic structural diagram of a slider in a first state provided by an embodiment of the present invention;

[0026] Figure 8 A schematic diagram of the structure of a slider in a second state provided by an embodiment of the present invention;

[0027] Fig. 9 A schematic diagram of the structure of a dial ring provided in an embodiment of the present invention;

[0028] Fig.10 A schematic diagram of the internal structure of a slider provided by an embodiment of the present invention;

[0029] Fig.11 A schematic diagram of the internal structure of an outer cylinder provided in an embodiment of the present invention;

[0030] Fig.12 for Fig.11 Enlarged view of point B in the middle;

[0031] Fig.13 for Fig.11 Enlarged view of center C.

[0032] Description of reference numerals:

[0033] 1. Mounting plate; 11. Outer cylinder; 111. Movable block; 112. Wedge block; 113. Lock block; 114. First cable; 115. Drill tooth; 116. Transmission wheel; 12. Inner cylinder; 121. Movable ring; 122. Connecting block; 123. Connecting ring; 124. Second cable; 13. Mounting ring; 131. Slider; 132. Take-up roller; 133. Cutting line; 134. Tenon; 135. Dial ring; 136. Guide groove; 137. Movable rod; 138. Traction block; 139. Insert block; 14. Mounting plate; 141. Drive rod; 142. Drive ring; 143. Synchronous sleeve; 144. Dial; 145. Trigger block; 146. Third cable; 147. Transmission cylinder; 148. Support leg; 149. Mounting cylinder. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0035] like Figure 1-13 As shown, a geochemical exploration device based on a drone comprises a mounting plate 1 fixedly mounted on the bottom of the drone, a mounting tube 149 and a mounting plate 14 slidably mounted in the mounting tube 149 are arranged on the mounting plate 1, an inner tube 12 and an outer tube 11 and a mounting ring 13 located between the inner tube 12 and the outer tube 11 are arranged on the mounting plate 14, drill teeth 115 with the same inclination direction are arranged at the bottom of the inner tube 12 and the outer tube 11, a plurality of pairs of movable blocks 111 are arranged on the mounting ring 13, and a cutting line 133 is arranged between a pair of movable blocks 111, wherein:

[0036] The inner cylinder 12 is driven to rotate so that the outer cylinder 11 rotates in the opposite direction, and the inner cylinder 12 moves down by a predetermined height so that the multiple pairs of movable blocks 111 move and the cutting lines 133 between the movable blocks 111 extend into the inner cylinder 12 .

[0037] Specifically, the drone in the above embodiment is a large agricultural drone, so as to provide sufficient downward pressure to the inner cylinder 12 and the outer cylinder 11, a camera is arranged at the bottom of the mounting plate 1, a plurality of supporting legs 148 are arranged on the mounting plate 1, a wire take-up roller 132 for winding up the cutting line 133 is arranged inside the slider 131, a torsion spring is arranged between the wire take-up roller 132 and the slider 131, an annular groove is opened on the mounting ring 13, and a convex block adapted to the annular groove is arranged on the slider 131, and the multiple pairs of sliders 131 and the cutting line 133 between any pair of sliders 131 include the following two states: in the first state, the multiple pairs of sliders 131 are closely fitted, the cutting lines 133 are staggered and located between the inner cylinder 12 and the outer cylinder 11 (such as Figure 7 In the second state, the sliders 131 are separated and the cutting lines 133 between the sliders 131 are staggered and distributed in a mesh shape (as shown in FIG. Figure 8 shown).

[0038] In the above technical scheme, when soil sampling is carried out on farmland, the staff controls the drone to fly to the predetermined area and gradually lands the drone, the support legs 148 support the mounting plate 1 and the drone, the inner cylinder 12 and the outer cylinder 11 are staggered with the crops, and then the inner cylinder 12 is controlled to rotate, the inner cylinder 12 drives the outer cylinder 11 to rotate, and the rotation direction of the outer cylinder 11 is opposite to that of the inner cylinder 12, the inclined drill teeth 115 on the outer cylinder 11 push the soil under the outer cylinder 11 outward, and the inclined drill teeth 115 on the inner cylinder 12 push the soil under the inner cylinder 12 inward, so that the sampling cylinder composed of the inner cylinder 12 and the outer cylinder 11 can drill into the soil, and the drone and the mounting plate 1 provide the sampling cylinder with There is enough downward pressure, at this time the slider 131 and the cutting line 133 are in the first state, and the cutting line 133 will not affect the movement of the sampling tube; when the inner tube 12 moves down to a predetermined height (i.e., the depth of the inner tube 12 embedded in the soil, the surface soil sampling depth is about 20 cm), the slider 131 moves along the annular groove on the mounting ring 13, and the slider 131 and the cutting line 133 switch from the first state to the second state. The cutting line 133 moves to cut off the soil sample in the inner tube 12 from the soil in the farmland, and multiple cutting lines 133 are staggered and distributed in a mesh shape, which can well hold the soil sample in the sampling tube and prevent the soil sample from falling too much from the sampling tube during the movement of the drone.

[0039] As a further embodiment of the present invention, a movable ring 121 for supporting the drill teeth 115 on the inner cylinder 12 is rotatably provided on the outer cylinder 11 , and a connecting block 122 extending into the inner cylinder 12 is provided on the movable ring 121 .

[0040] Specifically, a connecting ring 123 is slidably disposed inside the movable ring 121 , a plurality of connecting blocks 122 are fixedly mounted on the connecting ring 123 , and grooves adapted to the connecting blocks 122 are formed on the inner cylinder 12 .

[0041] Furthermore, during the downward movement of the sampling tube, the movable ring 121 rotates synchronously with the inner tube 12 through the connecting block 122, so that the drill teeth 115 thereon and the drill teeth 115 on the outer tube 11 move in the opposite direction, thereby pushing the soil; after the inner tube 12 moves down to a predetermined height, the connecting ring 123 drives the connecting block 122 to move, so that the connecting block 122 is separated from the inner tube 12, leaving space for the cutting line 133 to move.

[0042] As another embodiment further provided by the present invention, a driving rod 141 is provided on the inner cylinder 12, passing through the mounting plate 1 and being threadedly connected to the mounting cylinder 149. The driving rod 141 rotates to rotate the inner cylinder 12 and move the mounting plate 1 downward.

[0043] Specifically, a driving ring 142 for driving the driving rod 141 to rotate is rotatably provided on the mounting cylinder 149, a synchronization block extending into the driving rod 141 is provided on the driving ring 142, a sliding groove adapted to the synchronization block is provided on the driving rod 141, a motor is provided on the mounting plate 1, and a gear coupled to the driving ring 142 is provided on the output end of the motor.

[0044] Furthermore, during operation, the motor output torque drives the gear to rotate, the gear drives the drive ring 142 coupled thereto to rotate, the drive ring 142 drives the drive rod 141 to rotate through the synchronization block, the drive rod 141 rotates and moves downward along the thread on the mounting tube 149, thereby driving the sampling tube to move downward, making it easier for the sampling tube to drill into the soil.

[0045] As another embodiment further provided by the present invention, a synchronous sleeve 143 for driving the outer cylinder 11 to rotate is disposed on the driving rod 141 , and the synchronous sleeve 143 can make the outer cylinder 11 stationary or rotate with the inner cylinder 12 .

[0046] Specifically, a groove adapted to the synchronous sleeve 143 is provided on the driving rod 141, a transmission wheel 116 meshing with the outer cylinder 11 is rotatably provided on the mounting plate 14, a transmission cylinder 147 is provided at the bottom of the synchronous sleeve 143, an ∞-shaped chain is provided between the transmission cylinder 147 and the transmission wheel 116, and a spring is provided between the synchronous sleeve 143 and the mounting plate 14.

[0047] Furthermore, when the synchronous sleeve 143 is embedded in the groove on the driving rod 141, the synchronous sleeve 143 and the transmission cylinder 147 rotate synchronously with the driving rod 141, and the transmission cylinder 147 drives the transmission wheel 116 to rotate in the opposite direction through the chain, and the transmission wheel 116 drives the outer cylinder 11 meshed with it to rotate, so that the outer cylinder 11 rotates with the inner cylinder 12 and the rotation direction of the outer cylinder 11 is opposite to that of the inner cylinder 12; when the synchronous sleeve 143 is separated from the groove on the driving rod 141, the synchronous sleeve 143 no longer rotates, and the outer cylinder 11 also stops rotating.

[0048] Furthermore, in the above embodiment, the transmission wheel 116 may be meshed with the outer cylinder 11 and the transmission cylinder 147 at the same time, so that the outer cylinder 11 and the inner cylinder 12 rotate in opposite directions. In this embodiment, the transmission wheel 116 is a gear, and the outer cylinder 11 and the transmission cylinder 147 are both gear rings.

[0049] As another embodiment further provided by the present invention, a dial 144 for pushing the synchronous sleeve 143 is disposed inside the mounting plate 14 , and the dial 144 moves the synchronous sleeve 143 to decouple from the driving rod 141 .

[0050] Specifically, a trigger block 145 is provided on the mounting disk 14, a spring is provided between the trigger block 145 and the mounting disk 14, a third pull cable 146 is provided between the trigger block 145 and the dial 144, a spring is provided between the dial 144 and the mounting disk 14, and a slide groove for guiding the movement of the mounting plate 1 is provided inside the mounting cylinder 149.

[0051] Furthermore, when the mounting disk 14 moves downward along the slide groove inside the mounting cylinder 149, the trigger block 145 moves synchronously with the mounting disk 14. When the mounting disk 14 moves to the bottom of the slide groove, the trigger block 145 abuts against the mounting cylinder 149, and the trigger block 145 shrinks into the mounting disk 14. The third pull cable 146 is relaxed, and the dial 144 moves downward under the action of the spring, pushing the synchronous sleeve 143 to move, so that the synchronous sleeve 143 is separated from the groove on the drive rod 141.

[0052] As another embodiment further provided by the present invention, a shifting ring 135 for driving the movable block 111 to move is movably provided on the mounting plate 14 , and the shifting ring 135 rotates relative to the mounting ring 13 to move the movable block 111 and extend the cutting line 133 into the inner cylinder 12 .

[0053] Specifically, arc-shaped guide grooves 136 corresponding to the plurality of sliders 131 one by one and having different lengths are formed on the shifting ring 135 , and tenons 134 adapted to the corresponding guide grooves 136 are disposed on the plurality of sliders 131 .

[0054] Furthermore, when the shifting ring 135 rotates relative to the mounting ring 13, the multiple guide grooves 136 on the shifting ring 135 shift the corresponding tenon block 134 to move, so that the tenon block 134 drives the slider 131 to move, and the distance between the sliders 131 increases. The cutting line 133 pulls the take-up roller 132, and the take-up roller 132 releases the cutting line 133, and the cutting line 133 extends into the inner cylinder 12. The state of the slider 131 and the cutting line 133 is switched from the first state to the second state, and the cutting line 133 cuts off the soil in the inner cylinder 12 and the farmland during the movement.

[0055] As another embodiment further provided by the present invention, a locking block 113 for fixing the mounting cylinder 149 and a wedge block 112 for pushing the connecting block 122 to move are provided on the outer cylinder 11. The outer cylinder 11 descends to a predetermined height to allow the locking block 113 and the wedge block 112 to move.

[0056] Specifically, bosses are provided on the top of the outer cylinder 11 and the bottom of the mounting cylinder 149, a movable block 111 is provided on the boss, a spring is provided between the movable block 111 and the outer cylinder 11, a first pull cable 114 is provided between the movable block 111 and the wedge block 112 and the locking block 113, a spring is provided between the wedge block 112 and the outer cylinder 11, a spring is provided between the locking block 113 and the outer cylinder 11, and a plurality of grooves adapted to the locking block 113 are provided on the mounting cylinder 149.

[0057] Furthermore, in the process of the outer cylinder 11 moving downward, the movable block 111 gradually contacts the mounting cylinder 149 and is pushed by the mounting cylinder 149 to gradually retract into the outer cylinder 11, the first cable 114 is relaxed, and the locking block 113 is inserted into the groove on the mounting ring 13 under the action of the spring to fix the mounting ring 13 on the outer cylinder 11, and the wedge block 112 pushes the connecting ring 123 to move, and the connecting ring 123 drives the connecting block 122 to move downward, so that the connecting block 122 is separated from the inner cylinder 12, and a gap is left between the connecting ring 123 and the inner cylinder 12 for the cutting line 133 to move.

[0058] As another embodiment further provided by the present invention, an insert block 139 for fixing the ring 135 to the inner tube 12 is movably provided on the ring 135 , and a plurality of grooves adapted to the insert block 139 are provided on the inner tube 12 .

[0059] Specifically, when the inner cylinder 12 moves down to a predetermined height, the insert block 139 on the shift ring 135 moves and is inserted into the groove on the inner cylinder 12, fixing the shift ring 135 on the inner cylinder 12. At this time, the locking block 113 fixes the mounting ring 13 on the outer cylinder 11, and the outer cylinder 11 no longer rotates with the inner cylinder 12. At this time, the inner cylinder 12 rotates relative to the mounting ring 13 through the insert block 139, so that the state of the slider 131 and the cutting line 133 is switched from the first state to the second state.

[0060] As another embodiment further provided by the present invention, a movable rod 137 is provided on the dial ring 135, which abuts against the bottom of the mounting plate 14, and a traction block 138 for pulling the plug block 139 is provided in the movable rod 137. An electromagnet for attracting the traction block 138 is provided at the bottom of the mounting plate 14, and a through hole adapted to the movable rod 137 is opened on the mounting plate 14, and the dial 144 extends into the through hole.

[0061] Specifically, a second cable 124 is provided between the traction block 138 and the insert block 139 , a spring is provided between the insert block 139 and the dial ring 135 , a spring is provided between the movable rod 137 and the dial ring 135 , and a spring is provided between the slider 131 and the mounting ring 13 .

[0062] Furthermore, when taking soil samples from farmland, the staff controls the drone to fly to the predetermined area and gradually lands the drone. The support legs 148 support the mounting plate 1 and the drone. The inner cylinder 12 and the outer cylinder 11 are staggered from the crops. Then the motor is controlled to work. The motor outputs torque to drive the gear to rotate. The gear drives the drive ring 142 coupled thereto to rotate. The drive ring 142 drives the drive rod 141 to rotate through the synchronous block. The drive rod 141 moves downward along the thread on the mounting cylinder 149, thereby driving the inner cylinder 12 to rotate. The inner cylinder 12 drives the movable ring 121 and the drill teeth 115 thereon to rotate through the connecting block 122. The synchronous sleeve 143 and the transmission cylinder 147 rotate synchronously with the drive rod 141. The transmission cylinder 147 drives the transmission wheel 11 through the chain. 6 rotates in the opposite direction, the transmission wheel 116 drives the outer cylinder 11 meshed therewith to rotate, so that the outer cylinder 11 rotates with the inner cylinder 12 and the outer cylinder 11 rotates in the opposite direction to the inner cylinder 12, the inclined drill teeth 115 on the outer cylinder 11 push the soil under the outer cylinder 11 outward, and the inclined drill teeth 115 on the inner cylinder 12 push the soil under the inner cylinder 12 inward, so that the sampling cylinder composed of the inner cylinder 12 and the outer cylinder 11 can drill into the soil, and the drone and the mounting plate 1 provide sufficient downward pressure for the sampling cylinder. At this time, the slider 131 and the cutting line 133 are in the first state, and the cutting line 133 will not affect the movement of the sampling cylinder. The electromagnet in the mounting plate 1 attracts the traction block 138, and the traction block 138 drives the plug block 139 through the second cable 124, so that the plug block 139 is retracted into the dial ring 135.

[0063] When the inner cylinder 12 moves down to a predetermined height (i.e., the depth of the inner cylinder 12 embedded in the soil, the sampling depth of the surface soil is about 20 cm), the mounting plate 14 moves to the bottom of the slide slot, the trigger block 145 abuts against the mounting cylinder 149, the trigger block 145 retracts into the mounting plate 14, the third cable 146 is relaxed, and the dial 144 moves downward under the action of the spring, pushing the synchronous sleeve 143 to move, so that the synchronous sleeve 143 is separated from the groove on the driving rod 141, the outer cylinder 11 stops rotating, and the movable block 111 is pushed by the mounting cylinder 149 to gradually retract into the outer cylinder 11, the first cable 114 is relaxed, and the locking block 113 is locked under the action of the spring. Insert the lower into the groove on the mounting ring 13, fix the mounting ring 13 on the outer cylinder 11, the wedge 112 pushes the connecting ring 123 to move, and the connecting ring 123 drives the connecting block 122 to move downward, so that the connecting block 122 is separated from the inner cylinder 12, and a gap is left between the connecting ring 123 and the inner cylinder 12 for the cutting line 133 to move. The electromagnet on the mounting plate 1 stops working, the traction block 138 moves downward along the movable rod 137, and the insert block 139 is inserted into the groove on the inner cylinder 12 under the action of the spring, and the dial ring 135 is fixed to the inner cylinder 12. At this time, the inner cylinder 12 continues to rotate, and the inner cylinder 12 drives the dial ring 135 through the insert block 139 The relative mounting ring 13 rotates, and the multiple guide grooves 136 on the dial ring 135 dial the corresponding tenon block 134 to move, so that the tenon block 134 drives the slider 131 to move, and the distance between the sliders 131 increases. The cutting line 133 pulls the take-up roller 132, and the take-up roller 132 releases the cutting line 133, and the cutting line 133 extends into the inner cylinder 12. The state of the slider 131 and the cutting line 133 is switched from the first state to the second state, and the cutting line 133 cuts off the soil in the inner cylinder 12 from the farmland during the movement. The multiple cutting lines 133 are staggered and distributed in a mesh shape, which can well hold the soil sample in the sampling cylinder to avoid When the UAV moves, too much soil sample falls from the sampling tube until the movable rod 137 faces the through hole on the mounting plate 14. The movable rod 137 is inserted into the through hole on the mounting plate 14 under the action of the spring and pushes the dial 144 to move up. The traction block 138 moves up with the movable rod 137 and pulls the plug block 139 to separate from the inner tube 12, so that the synchronous ring is coupled with the driving rod 141. The outer tube 11 can rotate with the inner tube 12, and the motor cyclically outputs positive and reverse torques to drive the outer tube 11 to rotate back and forth at a small angle, thereby reducing the adsorption force of the soil in the farmland on the outer tube 11. At this time, the UAV takes off and pulls the sampling tube out of the farmland.

[0064] When the UAV flies back to the vicinity of the staff and lands, the movable rod 137 is manually pushed with a screwdriver or other rod-shaped object to move the movable rod 137 toward the inside of the dial ring 135, the traction block 138 moves downward, and the insertion block 139 is reinserted into the groove on the inner cylinder 12. At this time, the inner cylinder 12 drives the dial ring 135 to rotate in the opposite direction, and the slider 131 moves under the action of the spring, so that the slider 131 changes from the second state to the first state, making it convenient for the staff to take out the soil sample in the inner cylinder 12 for subsequent testing.

[0065] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A geochemical exploration device based on drone, characterized in that: The invention comprises a mounting plate (1) fixedly mounted on the bottom of an unmanned aerial vehicle, wherein the mounting plate (1) is provided with a mounting tube (149) and a mounting plate (14) slidably mounted in the mounting tube (149), wherein the mounting plate (14) is provided with an inner tube (12) and an outer tube (11) and a mounting ring (13) located between the inner tube (12) and the outer tube (11), wherein the bottoms of the inner tube (12) and the outer tube (11) are respectively provided with drill teeth (115) having the same inclination direction, wherein the mounting ring (13) is provided with a plurality of pairs of sliders (131), and a cutting line (133) is provided between a pair of sliders (131), wherein: The inner cylinder (12) is driven to rotate so that the outer cylinder (11) rotates in the opposite direction, and the inner cylinder (12) moves down a predetermined height so that the multiple pairs of sliders (131) move and the cutting lines (133) between the sliders (131) extend into the inner cylinder (12).

2. The geochemical exploration device based on drone according to claim 1, characterized in that: A movable ring (121) is rotatably provided on the outer cylinder (11) for supporting the drill teeth (115) on the inner cylinder (12), and a connecting block (122) extending into the inner cylinder (12) is provided on the movable ring (121).

3. The geochemical exploration device based on drone according to claim 1, characterized in that: The inner cylinder (12) is provided with a driving rod (141) which passes through the mounting plate (1) and is threadedly connected to the mounting cylinder (149); the driving rod (141) rotates to rotate the inner cylinder (12) and move the mounting plate (1) downward.

4. The geochemical exploration device based on drone according to claim 3 is characterized in that: The driving rod (141) is provided with a synchronous sleeve (143) for driving the outer cylinder (11) to rotate, and the synchronous sleeve (143) can make the outer cylinder (11) stationary or rotate with the inner cylinder (12).

5. The geochemical exploration device based on drone according to claim 4, characterized in that: A dial (144) for pushing the synchronous sleeve (143) is arranged inside the mounting plate (14), and the dial (144) moves the synchronous sleeve (143) to decouple from the driving rod (141).

6. The geochemical exploration device based on drone according to claim 5, characterized in that: A shifting ring (135) for driving the slider (131) to move is movably provided on the mounting plate (14); the shifting ring (135) rotates relative to the mounting ring (13) to move the slider (131) and extend the cutting line (133) into the inner cylinder (12).

7. The geochemical exploration device based on drone according to claim 2, characterized in that: The outer cylinder (11) is provided with a locking block (113) for fixing the mounting cylinder (149) and a wedge block (112) for pushing the connecting block (122) to move. The outer cylinder (11) is lowered to a predetermined height to enable the locking block (113) and the wedge block (112) to move.

8. The geochemical exploration device based on drone according to claim 6, characterized in that: The shift ring (135) is movably provided with an insert block (139) for fixing the shift ring on the inner cylinder (12), and the inner cylinder (12) is provided with a plurality of grooves adapted to the insert block (139).

9. The geochemical exploration device based on drone according to claim 8, characterized in that: The dial ring (135) is provided with a movable rod (137) abutting against the bottom of the mounting plate (14); a traction block (138) for traction of the insert block (139) is provided in the movable rod (137); and an electromagnet for attracting the traction block (138) is provided at the bottom of the mounting plate (14).

10. The geochemical exploration device based on drone according to claim 9, characterized in that: The mounting plate (14) is provided with a through hole adapted to the movable rod (137), and the dial (144) extends into the through hole.

Images