Unmanned aerial vehicle sampling device

Abstract

The invention relates to the technical field of soil sampling equipment, in particular to an unmanned aerial vehicle sampling device which is characterized in that a support frame is fixedly arranged below an unmanned aerial vehicle body; extension tables are fixedly arranged on the two sides of the supporting frame; the two sampling mechanisms are correspondingly and fixedly arranged on the two extension tables respectively; according to the sampling mechanism, a driving motor is arranged on a supporting frame; the wire twister is in transmission connection with the output end of the driving motor, the wire twister is fixedly arranged on the extension table, and the wire twister is fixedly connected with a pull rope; a brake for braking the wire twister is fixedly arranged on the wire twister; the sampling hopper is fixedly connected with the pull rope; and the driving motor and the brake are electrically connected with the unmanned aerial vehicle body. And under the condition that some natural conditions (such as cliff, deep valley or high-pollution area) cannot be reached or are difficult to reach, workers do not need to go to the site personally for sampling, so that the risk of field sampling of the workers is avoided, and meanwhile, the workload of the workers is also reduced.

Description

Technical Field

[0001] The present application relates to the technical field of soil sampling equipment and more particularly to an unmanned aerial vehicle sampling device. Background Art

[0002] Soil sampling technology is an important link in obtaining soil information. Soil sampling equipment is the basis and carrier of soil sampling technology. Soil sampling equipment should meet the requirements as much as possible and should try to make the obtained soil samples closer to the original state, which is conducive to soil pollution monitoring, soil fertility determination, soil structure analysis and bulk density determination.

[0003] In the existing technology, a mobile vehicle is used to carry out soil sampling at designated locations. For rivers and other places, sampling can be carried out by taking a small boat. When encountering an environment that is inaccessible to vehicles or small boats, such as shallow swamps, cliffs, deep valleys or highly polluted areas, for soil sampling in the area, the existing technology can use amphibious vessels to transport personnel to designated locations for sampling. During the sampling process, the staff also face certain safety hazards or pollution exposure risks. Summary of the invention

[0004] The present application provides a drone sampling device, which aims to solve the problem in the prior art that workers are required to enter dangerous environments for sampling.

[0005] In one embodiment, a drone sampling device is provided, including a drone body; A support frame, the support frame is fixedly arranged below the drone body; extension platforms are fixedly arranged on both sides of the support frame; Two sampling mechanisms, the two sampling mechanisms are respectively fixedly arranged on the two extension platforms; Sampling agencies include: A driving motor, wherein the driving motor is arranged on a supporting frame; A wire twister is connected to the output end of the driving motor by transmission, and the wire twister is fixedly arranged on the extension platform, and a pull rope is fixedly connected to the wire twister; a brake for braking the wire twister is fixedly arranged on the wire twister; A sampling bucket, the sampling bucket is fixedly connected to the draw rope; The driving motor and the brake are both electrically connected to the drone body.

[0006] The driving motor and the brake are electrically connected to the processor of the drone body. The drone body has a camera for acquiring ground information.

[0007] In one embodiment, the support frame includes a first support column, a second support column, and a first connecting rod; The first support column extends vertically and is fixedly connected to the drone body; the first connecting rod extends horizontally and is fixedly connected to the first support column; the drive motor is connected to the first connecting rod, and the extension platform is fixedly connected to the first connecting rod; the second support column extends vertically and is fixedly connected to the first connecting rod, and a pad is fixedly connected to the lower end of the first support column.

[0008] Specifically, the number of the first support columns and the number of the second support columns are both four and are arranged at intervals, the number of the first connecting rods is two, and both ends of the first connecting rods are respectively fixedly connected to two adjacent first support columns.

[0009] The support frame also includes a second connecting rod, and two ends of the second connecting rod are respectively connected to the two first connecting rods.

[0010] In one embodiment, the extension platform includes an extension rod and an extension plate; one end of the extension rod is fixedly connected to the first connecting rod, and the other end of the extension rod is fixedly connected to the extension plate, and the extension plate extends on a horizontal plane.

[0011] Specifically, there are two extension rods, which are distributed on both sides of the extension plate.

[0012] In one scheme, the wire twister includes a housing, a rotating shaft, a bearing, a driving gear, and a brake disc; the rotating shaft is rotatably connected to the housing through the bearing, and one end of the pull rope is fixedly connected to the rotating shaft; one end of the rotating shaft passes through the housing and is fixedly connected to the center of the brake disc, and the other end is fixedly connected to the center of the driving gear, and the driving gear is meshed with the output end of the driving motor for transmission; the brake is fixedly connected to the housing, and the brake has a braking member for braking the brake disc.

[0013] Specifically, the brake component includes a brake caliper with a slot and a telescopic component; part of the brake disc extends into the slot, the telescopic component is arranged on the inner wall of the slot, the telescopic end of the telescopic component can extend to abut against the brake disc, and the telescopic component is electromagnetically driven to extend and retract.

[0014] The telescopic part includes: an electromagnetic drive block, a telescopic block, a spring, and a shell with a cavity; the electromagnetic drive block and the spring are both arranged in the cavity, and the electromagnetic drive block is fixedly connected to the inner wall of the cavity; a part of the telescopic block is located in the cavity, and the other part passes through the cavity, and can move telescopically relative to the shell to abut against the rotating disk to form a brake; the spring is rod-shaped, and one end of the spring is fixedly connected to the cavity and the other end is fixedly connected to the telescopic block, and is used to push the telescopic block to move telescopically; an electromagnetic coil is provided at one end of the telescopic block close to the electromagnetic drive block.

[0015] Both the electromagnetic drive block and the telescopic block are electrically connected to the drone body; the electromagnetic drive block and the telescopic block can generate a stable magnetic field after being powered on, and the magnetic fields at the two ends of the electromagnetic drive block and the telescopic block are in opposite directions, that is, when powered on, the electromagnetic drive block and the telescopic part attract each other, the telescopic block contracts, and the spring is compressed. At this time, the telescopic block is separated from the brake disc, and the brake disc can rotate freely.

[0016] When the power is off, the electromagnetic force between the electromagnetic drive block and the telescopic member disappears, the spring pushes the telescopic block to extend, and abuts against the brake disc, so that the brake disc cannot rotate. Then the wire twister cannot rotate, and the pull rope cannot pull out the wire twister, so that the sampling bucket is in a suspended state.

[0017] In one solution, in a sampling mechanism, the number of wire twisters and the number of sampling buckets are both two, one to one; the two wire twisters are arranged at intervals; the driving motor is slidably connected to the support frame, and the output end of the driving motor is located between the two wire twisters.

[0018] In one scheme, the first connecting rod has a hollow structure and is provided with a strip-shaped slide groove. A screw rod is rotatably arranged inside the first connecting rod, a slider is slidably connected to the screw rod, and the slider passes through the slide groove and is fixedly connected to the drive motor; a sliding motor is fixedly connected to the first connecting rod and is transmission-connected to the screw rod.

[0019] The slide block and the slide groove can slide relative to each other.

[0020] In one embodiment, the sampling bucket includes: a first mud grab shovel, a second mud grab shovel, a first pulley, a second pulley, a third pulley, a fourth pulley, a connecting rope, a rod body, and a limit rod fixedly connected to the second mud grab shovel; The first mud grabbing shovel and the second mud grabbing shovel are hinged through a hinge shaft; the first pulley is fixedly connected to the second mud grabbing shovel, and the second pulley is connected to the hinge shaft; the third pulley is located above the second pulley, and the third pulley is fixedly connected to the intersection shaft, and the fourth pulley is fixedly arranged at the middle position of the intersection shaft; one end of the connecting rope is fixedly connected to the lower end of the first mud grabbing shovel, and the other end passes through the first pulley, the second pulley, the third pulley, and the fourth pulley in sequence and is fixedly connected to the pull rope; one end of the rod body is hinged to the first mud grabbing shovel, and the other end is a hook for hooking on the limit rod.

[0021] Specifically, the limiting rod is of an N-shaped structure, both ends of the limiting rod are fixedly connected to the second mud grabbing shovel, and the rod body can be hooked on the middle position of the limiting rod.

[0022] Specifically, the second pulley is rotatably connected to the hinge shaft, and the second pulley includes a rotating base, two rollers arranged at intervals, and a connecting plate; the rotating base is rotatably connected to the hinge shaft, and the two rollers are rotatably arranged on the rotating base. The connecting plate connects the two rollers together, and the connecting rope passes between the two rollers.

[0023] Specifically, the number of the first pulley, the second pulley, the third pulley, the fourth pulley, and the connecting rope are all two, and are symmetrically distributed on both sides of the middle position of the hinge shaft, and the connecting block is located directly above the rod body.

[0024] In one solution, a connecting block is fixedly provided on the pull rope, the pull rope is fixedly connected to the connecting block, and the connecting rope is fixedly connected to the connecting block.

[0025] Specifically, the first mud grabbing shovel and the second mud grabbing shovel are both provided with weight blocks, which are lead blocks.

[0026] In one solution, a buckle groove is provided on the first mud grabbing shovel, and a hook is hingedly connected to the second mud grabbing shovel. When the first mud grabbing shovel and the second mud grabbing shovel are buckled together, the hook is locked in the buckle groove.

[0027] Specifically, a limit block is provided at the position where the hook is hinged with the second mud grabbing shovel, and the limit block prevents the hook portion of the hook from rotating to below the buckle groove.

[0028] In one embodiment, the first mud grab shovel and the second mud grab shovel both have a receiving cavity. When the first mud grab shovel and the second mud grab shovel are buckled together, the edges of the receiving cavities of the first mud grab shovel and the second mud grab shovel abut against each other to form a closed cavity.

[0029] Beneficial effects of this application: By setting up a sampling mechanism on the drone body, there is no need for manual sampling in shallow swamps, cliffs, deep valleys or highly polluted areas. The sampling bucket in the sampling mechanism is released by the drone, and the sampling bucket descends to the designated position for sampling. Then, the driving motor drives the wire twister to drive the rope to pull the sampling bucket to the initial position to complete the sampling work. The staff does not need to go to the site for sampling, which avoids the danger of on-site sampling and reduces the workload of the staff.

[0030] When sampling by drone, the drone's route in the air is almost a straight line, going directly to the sampling site with few obstacles. Compared with a mobile car or boat, it reduces travel time and can improve sampling efficiency.

[0031] The brake can control the rotation of the wire twister to prevent the sampling bucket from falling and improve the safety of sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0033] Figure 1 This is a schematic diagram of the main structure of a sampling device in one embodiment of the present application; Figure 2 It is a left-side structural schematic diagram of a sampling device in one embodiment of the present application; Figure 3 This application Figure 1 A-direction cross-sectional schematic diagram; Figure 4 It is a schematic diagram of the structure of a wire twister and a brake in one embodiment of the present application; Figure 5 This is a schematic diagram of the main structure of the sampling bucket in one embodiment of the present application (in an open state); Figure 6 This is a schematic diagram of the left side structure of the sampling bucket in one embodiment of the present application; Figure 7 This is a schematic diagram of the main structure of the sampling bucket in one embodiment of the present application (closed state); Reference numerals in the figures: 1. UAV body; 2. support frame; 21. extension platform; 211. extension plate; 212. extension rod; 22. first support column; 23. second support column; 24. first connecting rod; 25. second connecting rod; 26. cushion block; 3. Sampling mechanism; 31. Driving motor; 32. Wire twister; 321. Housing; 322. Rotating shaft; 323. Driving gear; 324. Brake disc; 325. Bearing; 33. Pull rope; 34. brake; 341. brake member; 342. caliper; 343. slot; 345. telescopic member; 346. electromagnetic drive block; 347. telescopic block; 348. spring; 349. housing; 35, sampling bucket; 351, first mud grabbing shovel; 352, second mud grabbing shovel; 353, first pulley; 354, second pulley; 3541, rotating base; 3542, roller; 3543, connecting plate; 355, third pulley; 356, fourth pulley; 357, connecting rope; 358, rod body; 359, limit rod; 41. screw rod; 42. slider; 43. sliding motor; 5. buckle slot; 6. hook; 7. Articulated shaft; 8. Connecting block; 9. Weight block. DETAILED DESCRIPTION

[0034] The specific implementation methods of the present application are further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application, but are not intended to limit the scope of the present application. Similarly, the following examples are only some embodiments of the present application rather than all embodiments, and all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of this application.

[0035] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0040] The present application makes improvements and innovations and proposes the following embodiments.

[0041] In some embodiments, see Figures 1 to 7 , a drone sampling device is provided, comprising a drone body 1; A support frame 2, the support frame 2 is fixedly arranged below the drone body 1; extension platforms 21 are fixedly arranged on both sides of the support frame 2; Two sampling mechanisms 3, the two sampling mechanisms 3 are respectively and correspondingly fixedly arranged on the two extension platforms 21; The sampling mechanism 3 comprises: A driving motor 31, wherein the driving motor 31 is arranged on the supporting frame 2; The wire twister 32 is in driving connection with the output end of the driving motor 31, the wire twister 32 is fixedly arranged on the extension platform 21, and a pull rope 33 is fixedly connected to the wire twister 32; a brake 34 for braking the wire twister 32 is provided on the wire twister 32; A sampling bucket 35, the sampling bucket 35 is fixedly connected to the pull rope 33; The driving motor 31 and the brake 34 are both electrically connected to the drone body 1 .

[0042] The driving motor 31 and the brake 34 are electrically connected to the processor of the drone body 1. The drone body 1 has a camera for acquiring ground information.

[0043] By setting the sampling mechanism 3 on the drone body 1, there is no need for manual entry into shallow swamps, cliffs, deep valleys or highly polluted areas for sampling. The drone releases the sampling bucket 35 in the sampling mechanism 3, and the sampling bucket 35 descends to a designated position for sampling. Then, the driving motor 31 drives the wire twister 32 to drive the pull rope 33 to pull the sampling bucket 35 to the initial position, completing the sampling work. The staff does not need to go to the site to take samples in person, which avoids the danger of the staff taking samples on site and also reduces the workload of the staff.

[0044] When sampling is carried out by drones, the drone's route in the air is almost a straight line, going directly to the sampling site. Compared with mobile cars or boats, it reduces travel time and can improve sampling efficiency.

[0045] The brake 34 can control the rotation of the wire twister 32 to prevent the sampling bucket 35 from falling, thereby improving the safety of sampling.

[0046] In some embodiments, see Figure 1 , Figure 2 , Figure 3 , the support frame 2 includes a first support column 22, a second support column 23, and a first connecting rod 24; The first support column 22 extends vertically and is fixedly connected to the drone body 1; the first connecting rod 24 extends horizontally and is fixedly connected to the first support column 22; the drive motor 31 is connected to the first connecting rod 24, and the extension platform 21 is fixedly connected to the first connecting rod 24; the second support column 23 extends vertically and is fixedly connected to the first connecting rod 24, and a cushion block 26 is fixedly connected to the lower end of the first support column 22. The first support column 22 and the second support column 23 can free up vertical space for the setting of the sampling mechanism 3, and the first connecting rod 24 extends horizontally to provide a mounting point for the setting of the extension platform 21 and the drive motor 31.

[0047] Specifically, the number of the first support columns 22 and the second support columns 23 are both four and are arranged at intervals, the number of the first connecting rods 24 is two, and the two ends of the first connecting rods 24 are respectively fixedly connected to two adjacent first support columns 22. The four first support columns 22 are provided to improve the stability of the support of the drone body 1 and the sampling mechanism 3.

[0048] The support frame 2 further includes a second connecting rod 25, and two ends of the second connecting rod 25 are respectively connected to the two first connecting rods 24. The second connecting rod 25 is provided to improve the overall structural strength of the support frame 2.

[0049] In some embodiments, see Figure 3 The extension platform 21 includes an extension rod 212 and an extension plate 211; one end of the extension rod 212 is fixedly connected to the first connecting rod 24, and the other end is fixedly connected to the extension plate 211, and the extension plate 211 extends on a horizontal plane. The structure is simple, practical and reliable.

[0050] Specifically, there are two extension rods 212 , which are distributed on both sides of the extension plate 211 . The two extension rods 212 improve the structural strength of the extension platform 21 .

[0051] In some embodiments, see Figure 4The wire twister 32 includes a housing 321, a rotating shaft 322, a bearing 325, a driving gear 323, and a brake disc 324; the rotating shaft 322 is rotatably connected to the housing 321 through the bearing 325, and one end of the pull rope 33 is fixedly connected to the rotating shaft 322; one end of the rotating shaft 322 passes through the housing 321 and is fixedly connected to the center of the brake disc 324, and the other end is fixedly connected to the center of the driving gear 323, and the driving gear 323 is meshed with the output end of the driving motor 31 for transmission; the brake 34 is fixedly connected to the housing 321, and the brake 34 has a brake member 341 for braking the brake disc 324. The pull rope 33 is wound around the rotating shaft 322, and the brake 34 controls the rotation of the brake disc 324, thereby controlling the rotation of the rotating shaft 322; the driving motor 31 drives the driving gear 323 to rotate and then drives the rotating shaft 322 to rotate, and the rotation of the rotating shaft 322 is controlled by the cooperation of the driving motor 31 and the brake 34, thereby controlling the position of the sampling bucket 35. The wire twister 32 has a simple structure, a reasonable design, and is practical and reliable.

[0052] Specifically, the brake member 341 includes a brake caliper 342 having a slot 343 and a telescopic member 345; a portion of the brake disc 324 extends into the slot 343, and the telescopic member 345 is disposed on the inner wall of the slot 343. The telescopic end of the telescopic member 345 can extend to abut against the brake disc 324, and the telescopic member 345 is electromagnetically driven to extend and retract. The telescopic movement of the telescopic member 345 abuts against or separates from the brake disc 324 to control the rotation of the rotating shaft 322.

[0053] See also Figure 4 The telescopic member 345 includes: an electromagnetic driving block 346, a telescopic block 347, a spring 348, and a shell 349 with a cavity; the electromagnetic driving block 346 and the spring 348 are both arranged in the cavity, and the electromagnetic driving block 346 is fixedly connected to the inner wall of the cavity; a part of the telescopic block 347 is located in the cavity, and the other part passes through the cavity, and can be telescopically moved relative to the shell 349 to abut against the rotating disk to form a brake; the spring 348 is rod-shaped, and one end of the spring is fixedly connected to the cavity and the other end is fixedly connected to the telescopic block 347, which is used to push the telescopic block 347 to move telescopically; an electromagnetic coil is provided at one end of the telescopic block 347 close to the electromagnetic driving block 346.

[0054] The electromagnetic drive block 346 and the telescopic block 347 are both electrically connected to the drone body 1; the electromagnetic drive block 346 and the telescopic block 347 can both generate a stable magnetic field after being powered on, and the directions of the magnetic fields at the two ends of the electromagnetic drive block 346 and the telescopic block 347 that are close to each other are opposite, that is, when powered on, the electromagnetic drive block 346 and the telescopic member 345 attract each other, the telescopic block 347 contracts, and the spring 348 is compressed. At this time, the telescopic block 347 is separated from the brake disc 324, and the brake disc 324 can rotate freely.

[0055] When the power is off, the electromagnetic force between the electromagnetic drive block 346 and the telescopic member 345 disappears, the spring 348 pushes the telescopic block 347 to extend, and abuts against the brake disc 324, so that the brake disc 324 cannot rotate. As a result, the winch 32 cannot rotate, and the pull rope 33 cannot pull out the winch 32, so that the sampling bucket 35 is in a suspended state. Compared with the hydraulic drive method, the use of electromagnetic coils as driving force reduces the volume and weight of the brake 34, and improves the load capacity of the drone body 1.

[0056] In some embodiments, see Figure 1 , Figure 2 , Figure 3 In a sampling mechanism 3, the number of the wire twisters 32 and the number of the sampling buckets 35 are both one-to-one corresponding to two; the two wire twisters 32 are arranged at intervals; the driving motor 31 is slidably connected to the support frame 2, and the output end of the driving motor 31 is located between the two wire twisters 32. The number of the wire twisters 32 and the sampling buckets 35 is increased, thereby increasing the number of samples after each trip of the drone body 1. By slidingly setting the driving motor 31, one driving motor 31 serves two wire twisters 32, reducing the use of the driving motor 31, reducing the weight of the sampling device, and improving the load capacity of the drone body 1.

[0057] When the output end of the driving motor 31 is separated from the driving gear 323 and the brake 34 is energized, the wire twister 32 can rotate freely. At this time, the sampling bucket 35 performs a nearly free fall motion under the action of gravity, which can help the sampling bucket 35 sink into a certain depth of soil or mud when it falls to the ground, ensuring that the sampling bucket 35 obtains a sufficient amount of sample.

[0058] In some embodiments, see Figure 3 The first connecting rod 24 is a hollow structure, and a strip-shaped slide groove is provided on the first connecting rod 24. A screw rod 41 is rotatably arranged in the first connecting rod 24, and a slider 42 is slidably connected to the screw rod 41. The slider 42 passes through the slide groove and is fixedly connected to the drive motor 31; the first connecting rod 24 is fixedly connected to a sliding motor 43 that is transmission-connected to the screw rod 41. The slider 42 is driven to move by the screw rod 41, thereby driving the drive motor 31 to move. The structure is simple and reliable to use. The screw rod 41, the slider 42, and the sliding motor 43 can be designed to be smaller in size, which is only used to meet the movement of the drive motor 31. The weight of the screw rod 41, the slider 42, and the sliding motor 43 is less than the weight of one drive motor 31, which can reduce the weight of the sampling mechanism 3 as a whole. Improve the load capacity of the drone body 1.

[0059] The slide block 42 and the slide groove can slide relative to each other.

[0060] In some embodiments, see Figure 5 , Figure 6 , Figure 7 The sampling bucket 35 includes: a first mud grabbing shovel 351, a second mud grabbing shovel 352, a first pulley 353, a second pulley 354, a third pulley 355, a fourth pulley 356, a connecting rope 357, a rod body 358, and a limiting rod 359 fixedly connected to the second mud grabbing shovel 352; The first mud grabbing shovel 351 and the second mud grabbing shovel 352 are hinged by the hinge shaft 7; the first pulley 353 is fixedly connected to the second mud grabbing shovel 352, and the second pulley 354 is connected to the hinge shaft 7; the third pulley 355 is located above the second pulley 354, and the third pulley 355 is fixedly connected to the intersection shaft, and the fourth pulley 356 is fixedly arranged at the middle position of the intersection shaft; one end of the connecting rope 357 is fixedly connected to the lower end of the first mud grabbing shovel 351, and the other end passes through the first pulley 353, the second pulley 354, the third pulley 355, and the fourth pulley 356 in sequence and is fixedly connected to the pull rope 33; the connecting rope 357 is fixedly connected to the pull rope 33; one end of the rod body 358 is hinged to the first mud grabbing shovel 351, and the other end is a hook for hooking on the limiting rod 359. When the connection rope 357 is pulled, the first mud grabbing shovel 351 and the second mud grabbing shovel 352 are moved toward each other to grab soil or silt as a sample. The first pulley 353, the second pulley 354, the third pulley 355, and the fourth pulley 356 are mainly used to change the pulling direction of the connection rope 357, so as to better pull the first mud grabbing shovel 351 and the second mud grabbing shovel 352.

[0061] The cooperation between the rod body 358 and the limiting rod 359 can keep the first mud grabbing shovel 351 and the second mud grabbing shovel 352 in an open state before they fall to the ground, so that the mud grabbing shovels can better grab samples.

[0062] Specifically, the limiting rod 359 has an n-shaped structure, and both ends of the limiting rod 359 are fixedly connected to the second mud grabbing shovel 352, and the rod body 358 can be hooked on the middle position of the limiting rod 359. When the first mud grabbing shovel 351 and the second mud grabbing shovel 352 fall to the ground, that is, when the tension of the connecting rope 357 disappears, the first mud grabbing shovel 351 and the second mud grabbing shovel 352 rotate relative to each other due to the falling impact force. At this time, the rod body 358 is separated from the limiting rod 359, and then by pulling the connecting rope 357, the first mud grabbing shovel 351 and the second mud grabbing shovel 352 can move toward each other to grab mud and sample.

[0063] For details, please refer to Figure 5 , Figure 6 , Figure 7The second pulley 354 is rotatably connected to the hinge shaft 7. The second pulley 354 includes a rotating base 3541, two rollers 3542 arranged at intervals, and a connecting plate 3543. The rotating base 3541 is rotatably connected to the hinge shaft 7. The two rollers 3542 are both rotatably arranged on the rotating base 3541. The connecting plate 3543 connects the two rollers 3542 together, and the connecting rope 357 passes between the two rollers 3542. The rotating base 3541 is provided to realize the rotation of the second pulley 354 to better adapt to the change in the pulling direction of the connecting rope 357. The cooperation of the two rollers 3542 and the connecting plate 3543 can prevent the connecting rope 357 from slipping out of the rollers 3542.

[0064] Specifically, the number of the first pulley 353, the second pulley 354, the third pulley 355, the fourth pulley 356, and the connecting rope 357 are all two, and they are symmetrically distributed on both sides of the middle of the hinge shaft 7, and the connecting block 8 is located directly above the rod body 358. The two pulleys can evenly distribute the gravity of the two mud grabbing shovels, and the design is reasonable, and the opening of the sampling bucket 35 is ensured to face downward as much as possible, so as to grab the sample after landing.

[0065] In some embodiments, see Figure 5 , Figure 6 , Figure 7 A connecting block 8 is fixedly arranged on the pull rope 33, the pull rope 33 is fixedly connected to the connecting block 8, and the connecting rope 357 is fixedly connected to the connecting block 8. The connecting block 8 can be arranged so that after the sampling bucket 35 falls to the ground, the tension of the pull rope 33 disappears and the connecting block 8 presses on the rod body 358, so that the rod body 358 is separated from the limiting rod 359. It is convenient for the two mud grabbing shovels to move towards each other to realize the mud grabbing sampling work.

[0066] Specifically, the first mud grabbing shovel 351 and the second mud grabbing shovel 352 are both provided with a weight block 9, and the weight block 9 is a lead block. The weight block 9 can be provided to facilitate the mud grabbing shovel to sink into the soil or mud after it is lowered, so as to facilitate obtaining a sufficient amount of sample.

[0067] In some embodiments, a buckle groove 5 is provided on the first grabbing shovel 351, and a hook 6 is hingedly connected to the second grabbing shovel 352. When the first grabbing shovel 351 and the second grabbing shovel 352 are buckled together, the hook 6 is buckled into the buckle groove 5. When the hook 6 is buckled into the buckle groove 5, the first grabbing shovel 351 and the second grabbing shovel 352 cannot be separated by themselves, so that the clamped sample is ensured to fall from the first grabbing shovel 351 and the second grabbing shovel 352.

[0068] Specifically, a limit block is provided at the position where the hook 6 is hinged to the second mud grabbing shovel 352 , and the limit block prevents the hook portion of the hook 6 from rotating to the bottom of the buckle groove 5 .

[0069] This arrangement ensures that the hook portion of the hook 6 and the buckle slot 5 are substantially located on the same horizontal plane, and when the first mud grabbing shovel 351 and the second mud grabbing shovel 352 move toward each other until they are substantially in contact, the hook 6 pushes against the buckle slot 5 and is smoothly snapped into the buckle slot 5. This design can avoid the situation where the limit block cannot be snapped into the buckle slot 5.

[0070] In some embodiments, the first mud grab shovel 351 and the second mud grab shovel 352 both have a receiving cavity, and when the first mud grab shovel 351 and the second mud grab shovel 352 are buckled together, the edges of the receiving cavities of the first mud grab shovel 351 and the second mud grab shovel 352 abut against each other to form a closed cavity. The formed cavity is used to hold the sample, and the design is reasonable.

[0071] The above are only optional embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A drone sampling device, comprising a drone body, characterized in that: Also includes: A support frame, the support frame is fixedly arranged below the drone body; extension platforms are fixedly arranged on both sides of the support frame; Two sampling mechanisms, the two sampling mechanisms are respectively and correspondingly fixedly arranged on the two extension platforms; The sampling mechanism comprises: A driving motor, wherein the driving motor is arranged on the supporting frame; A wire twister, the wire twister is transmission-connected with the output end of the driving motor, the wire twister is fixedly arranged on the extension platform, and a pull rope is fixedly connected to the wire twister; a brake for braking the wire twister is fixedly provided on the wire twister; the wire twister comprises a housing, a rotating shaft, a bearing, a driving gear, and a brake disc; the rotating shaft is rotationally connected in the housing through the bearing, and one end of the pull rope is fixedly connected to the rotating shaft; one end of the rotating shaft passes through the housing and is fixedly connected to the center of the brake disc, and the other end is fixedly connected to the center of the driving gear, and the driving gear is meshed with the output end of the driving motor for transmission; the brake is fixedly connected to the housing, and the brake has a braking member for braking the brake disc; A sampling bucket, the sampling bucket is fixedly connected to the pull rope; The driving motor and the brake are both electrically connected to the drone body.

2. The drone sampling device according to claim 1, characterized in that: The support frame includes a first support column, a second support column, and a first connecting rod; The first support column extends vertically and is fixedly connected to the drone body, the first connecting rod extends horizontally, and the first connecting rod is fixedly connected to the first support column; the drive motor is connected to the first connecting rod, and the extension platform is fixedly connected to the first connecting rod; the second support column extends vertically and is fixedly connected to the first connecting rod, and a pad is fixedly connected to the lower end of the first support column.

3. The drone sampling device according to claim 2, characterized in that: The extension platform comprises an extension rod and an extension plate; one end of the extension rod is fixedly connected to the first connecting rod, and the other end of the extension rod is fixedly connected to the extension plate, and the extension plate extends on a horizontal plane.

4. The drone sampling device according to claim 1, characterized in that: In one of the sampling mechanisms, the number of the wire twisters and the number of the sampling buckets are both two, one to one; the two wire twisters are arranged at intervals; the driving motor is slidably connected to the supporting frame, and the output end of the driving motor is located between the two wire twisters.

5. The drone sampling device according to claim 1, characterized in that: The first connecting rod is a hollow structure, and a strip-shaped slide groove is provided on the first connecting rod. A screw rod is rotatably arranged inside the first connecting rod, and a slider is slidably connected to the screw rod. The slider passes through the slide groove and is fixedly connected to the drive motor; a sliding motor is fixedly connected to the first connecting rod and is transmission-connected to the screw rod.

6. The drone sampling device according to claim 5, characterized in that: The sampling bucket comprises: a first mud grabbing shovel, a second mud grabbing shovel, a first pulley, a second pulley, a third pulley, a fourth pulley, a connecting rope, a rod body, and a limiting rod fixedly connected to the second mud grabbing shovel; The first mud grabbing shovel and the second mud grabbing shovel are hinged by a hinge shaft; the first pulley is fixedly connected to the second mud grabbing shovel, and the second pulley is connected to the hinge shaft; the third pulley is located above the second pulley, and the third pulley is fixedly connected to the intersection shaft, and the fourth pulley is fixedly arranged at the middle position of the intersection shaft; one end of the connecting rope is fixedly connected to the lower end of the first mud grabbing shovel, and the other end is fixedly connected to the pull rope after passing through the first pulley, the second pulley, the third pulley, and the fourth pulley in sequence; one end of the rod body is hinged to the first mud grabbing shovel, and the other end is a hook for hooking on the limiting rod.

7. The drone sampling device according to claim 6, characterized in that: A connecting block is also fixedly provided on the pull rope, the pull rope is fixedly connected to the connecting block, and the connecting rope is fixedly connected to the connecting block.

8. The drone sampling device according to claim 1, characterized in that: The first mud grabbing shovel is provided with a buckle groove, and the second mud grabbing shovel is hinged with a hook. When the first mud grabbing shovel and the second mud grabbing shovel are buckled together, the hook is buckled into the buckle groove.

9. The drone sampling device according to claim 1, characterized in that: The first mud grab shovel and the second mud grab shovel both have a containing cavity. When the first mud grab shovel and the second mud grab shovel are buckled together, the edges of the containing cavities of the first mud grab shovel and the second mud grab shovel abut against each other to form a closed cavity.

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