A portable drone riverbed sampling system

Abstract

The invention discloses a portable unmanned aerial vehicle riverbed sampling system, and relates to the technical field of unmanned aerial vehicles. A portable unmanned aerial vehicle riverbed sampling system is disclosed, comprising an unmanned aerial vehicle body, a lifting and retracting unit, and a sampling unit, wherein the lifting and retracting unit mainly comprises a retracting and discharging motor fixedly installed on the lower side of the unmanned aerial vehicle body and a retracting and discharging shaft, a retracting and discharging rope can be wound and installed on the retracting and discharging shaft, and one end of the retracting and discharging rope is fixedly hoisted with the sampling unit; when sampling at the bottom of the riverbed is required, the unmanned aerial vehicle is controlled to fly above the corresponding water surface, and the sampling unit is released onto the riverbed through the lifting and retracting unit, and after the riverbed sample is taken by the sampling unit, the sampling unit is pulled up, and finally the unmanned aerial vehicle returns with the sampling unit, so as to achieve the purpose of rapid sampling by the unmanned aerial vehicle.

Description

Technical Field

[0001] The invention relates to the technical field of unmanned aerial vehicles, and in particular to a portable unmanned aerial vehicle riverbed sampling system. Background Art

[0002] In the field of drone technology, different types of drones are required for different application scenarios, and the demand for underwater exploration is gradually increasing.

[0003] The existing demand for sampling the riverbed bottom mainly uses boats and samplers for sampling. However, in the actual sampling process, due to the limited configuration of boats in a water area, there is often a shortage of boats, resulting in failure to sample. In addition, the sampler needs to be dragged during the sampling process, which can easily cause the sampler and the rope used to drag the sample to the riverbed to get entangled, which is not conducive to sampling.

[0004] For this reason, a supporting device capable of rapid and in-situ sampling is urgently needed. Summary of the invention

[0005] In view of the above-mentioned technical deficiencies, the technical problem to be solved by the present invention is to provide a portable UAV riverbed sampling system.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solution: The present invention provides a portable UAV riverbed sampling system, including a UAV body, characterized in that:

[0007] Also includes:

[0008] The lifting and retracting unit includes a retracting and discharging motor, a retracting and discharging shaft and a retracting and discharging rope arranged on the lower side of the UAV body, and the upper end of the retracting and discharging rope is fixed to the retracting and discharging shaft;

[0009] The sampling unit comprises a rotary drive device horizontally fixed to the lower end of the retractable rope, and a sampling tube is arranged at the rotating end of the rotary drive device;

[0010] When sampling is performed, the rotary drive device controls the sampling tube to rotate in a vertical plane, and the tube mouth of the sampling tube rotates 360 degrees starting from the top.

[0011] Preferably, the rotary drive device comprises a hollow mounting tube, a sampling motor is arranged in the mounting tube, and one end of the sampling tube away from the tube opening is arranged at the rotating end of the sampling motor.

[0012] Preferably, the sampling tubes are provided at both horizontal ends of the installation tube.

[0013] Preferably, the sampling tube is bent in a V-shape, and the tube openings of the sampling tube are located at both ends of the V-shape.

[0014] Preferably, a one-way valve is provided at the tube mouth of the sampling tube.

[0015] Preferably, an inverted U-shaped hanger is provided in the middle of the mounting tube, and the middle of the hanger is fixedly connected to the lower end of the retractable rope.

[0016] Preferably, limiting tubes are arranged on the two horizontal outer sides in the middle of the mounting tube, and the limiting tubes are extended in the vertical direction. Both ends of the hanger are slidably inserted in the limiting tubes, and locking structures for locking the movement of the hanger are arranged on the limiting tubes and the mounting tube.

[0017] Preferably, the locking structure comprises a through slot horizontally penetrating the limiting tube and the mounting tube and a friction block arranged in the through slot for squeezing the hanger, and an elastic block for pushing the friction block to squeeze the hanger is arranged on the rotating shaft of the sampling motor.

[0018] Preferably, the friction block is provided with anti-slip textures on one side opposite to the hanger.

[0019] The beneficial effects of the present invention are:

[0020] 1. The sampling unit is carried by drones to achieve rapid fixed-point sampling, eliminating the interference of various factors such as topography;

[0021] 2. The sampling unit takes out samples from the bottom of the riverbed by self-rotation, eliminating dragging and moving, and improving sampling efficiency;

[0022] 3. The movable setting of the hanger in the sampling unit can provide convenience for carrying and moving, and can also assist in sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, 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 invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic structural diagram of a portable UAV riverbed sampling system provided in an embodiment of the present invention.

[0025] Figure 2 A schematic diagram showing the structure of a sampling unit.

[0026] Figure 3 Schematic diagram of the structure on the sampling tube and the installation tube.

[0027] Figure 4 A schematic diagram for showing the internal structure of the installation tube.

[0028] Explanation of the reference numerals: 1. UAV body; 2. Retracting and releasing rope; 3. Sampling unit; 4. Mounting tube; 41. Sampling motor; 42. Sampling shaft; 43. Elastic block; 44. Limiting tube; 45. Through groove; 46. Friction block; 5. Sampling tube; 6. Hanger. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Figure 1-4 As shown, the present invention provides a portable UAV riverbed sampling system, including a UAV body 1, a lifting and retracting unit and a sampling unit 3, wherein the lifting and retracting unit mainly includes a retracting and discharging motor and a retracting and discharging shaft fixedly installed on the lower side of the UAV body 1, a retracting and discharging rope can be wound around the retracting and discharging shaft, and one end of the retracting and discharging rope is fixedly hoisted on the sampling unit 3;

[0031] When sampling is required at the bottom of the riverbed, the drone body 1 is controlled to fly above the corresponding water surface, and the sampling unit 3 is released onto the riverbed through the lifting and retracting unit. After the riverbed sample is taken by the sampling unit 3, the sampling unit 3 is lifted up again, and finally the drone body 1 returns with the sampling unit 3, thereby achieving the purpose of rapid sampling by the drone body 1.

[0032] In the whole sampling process, the sampling unit 3 is the most important, which mainly includes a horizontal mounting tube 4 and sampling tubes 5 located at both ends of the mounting tube 4. A sampling motor 41 is fixedly installed in the mounting tube 4. The sampling motor 41 has sampling shafts 42 extending to both ends of the mounting tube 4. The sampling tube 5 is bent in a V shape as a whole. Both ends of the sampling tube 5 are open and provided with a one-way valve. The one-way valve can be made of elastic material and mainly serves to prevent most samples from leaking. The middle position of the sampling tube 5 is fixed on the sampling shaft 42.

[0033] When the sampling unit 3 falls to the bottom of the riverbed, the sampling motor 41 is started to drive the sampling tube 5 to rotate, and the openings at both ends of the sampling tube 5 are used to dig out the bottom of the riverbed for sampling, thereby achieving the purpose of rapid in-situ sampling of the riverbed bottom.

[0034] However, due to the large differences in riverbed geology, on a harder riverbed geology, directly driving the sampling tube 5 to rotate will cause the sampling unit 3 to flip on the riverbed and fail to dig samples. Therefore, it is necessary to fix the position of the mounting tube 4 during the sampling process.

[0035] Specifically, an inverted U-shaped hanger 6 is provided in the sampling unit 3, the middle part of the hanger 6 is fixedly connected to the lower end of the retracting rope, and limiting tubes 44 are provided on the two horizontal outer sides in the middle of the mounting tube 4. Both ends of the hanger 6 are slidably inserted in the limiting tubes 44 and can be moved and fixed in the vertical direction.

[0036] In addition, a through groove 45 is horizontally penetrated on the limiting tube 44 and the mounting tube 4, and a friction block 46 is slidably installed in the through groove 45. An elastic block 43 is preset on the sampling shaft 42; when the elastic block 43 contacts the friction block 46, the friction block 46 squeezes the hanger 6, and the friction block 46 and the squeezed surface of the hanger 6 are preset with anti-slip patterns, so that the hanger 6 remains fixed. Therefore, during transportation and storage, the two ends of the hanger 6 can be folded up to be higher than the bottom side of the mounting tube 4; and when sampling is performed, the sample is taken at the bottom. While the sampling unit 3 is in operation, the sampling motor 41 is controlled to rotate to a certain extent, so that the elastic block 43 is released from the squeezing of the friction block 46. At this time, the hanger 6 loses the squeezing of the friction block 46 and can move in the limiting tube 44, and until the sampling unit 3 enters the water, the hanger 6 will gradually slide downward relative to the mounting tube 4 due to the large buoyancy of the hollow parts of the mounting tube 4 and the sampling tube 5. When landing on the riverbed, the lower end of the hanger 6 penetrates through the provided spikes, thereby locking the movement of the sampling unit 3.

[0037] The working principle of the present invention is:

[0038] When sampling is required at the bottom of the riverbed, the drone body 1 is first controlled to fly above the corresponding water surface, and then the sampling unit 3 is released through the lifting and retracting unit. While sampling the unit 3 below, the sampling motor 41 is controlled to rotate by a certain amplitude, so that the elastic block 43 is freed from squeezing the friction block 46. At this time, the hanger 6 loses the squeezing of the friction block 46 and can move in the limiting tube 44, and until the sampling unit 3 enters the water, the hanger 6 will gradually slide downward relative to the mounting tube 4 due to the large buoyancy of the hollow parts of the mounting tube 4 and the sampling tube 5. When landing on the riverbed, the lower end of the hanger 6 is inserted through the provided spikes, thereby locking the movement of the sampling unit 3;

[0039] Finally, by starting the sampling motor 41, the sampling tube 5 is driven to rotate, and the openings at both ends of the sampling tube 5 are used to dig out the bottom of the riverbed for sampling, thereby achieving the purpose of rapid in-situ sampling of the riverbed bottom.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. 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. A portable drone riverbed sampling system, comprising a drone body (1), characterized in that: Also includes: A lifting and retracting unit: comprising a retracting and discharging motor, a retracting and discharging shaft and a retracting and discharging rope arranged on the lower side of the drone body (1), wherein the upper end of the retracting and discharging rope is fixed to the retracting and discharging shaft; The sampling unit (3) comprises a rotary drive device horizontally fixed to the lower end of the retractable rope, wherein the rotating end of the rotary drive device is provided with a sampling tube (5); When sampling is performed, the rotary drive device controls the sampling tube (5) to rotate in a vertical plane, and the tube mouth of the sampling tube (5) rotates 360 degrees starting from the top; The rotary drive device comprises a hollow mounting tube (4), a sampling motor (41) is arranged inside the mounting tube (4), and an end of the sampling tube (5) away from the tube opening is arranged at the rotating end of the sampling motor (41); The sampling tubes (5) are arranged at both horizontal ends of the installation tube (4); The sampling tube (5) is bent in a V-shape, and the tube openings of the sampling tube (5) are located at both ends of the V-shape; An inverted U-shaped hanger (6) is provided in the middle of the mounting tube (4), and the middle of the hanger (6) is fixedly connected to the lower end of the retractable rope.

2. A portable drone riverbed sampling system as claimed in claim 1, characterized in that: The pipe mouth of the sampling pipe (5) is provided with a one-way valve.

3. A portable drone riverbed sampling system as claimed in claim 1, characterized in that: Limiting tubes (44) are arranged on two horizontal outer sides of the middle of the mounting tube (4), and the limiting tubes (44) are extended in the vertical direction. Both ends of the hanger (6) are slidably inserted into the limiting tubes (44), and locking structures for locking the movement of the hanger (6) are arranged on the limiting tubes (44) and the mounting tube (4).

4. A portable drone riverbed sampling system as claimed in claim 3, characterized in that: The locking structure comprises a through slot (45) horizontally penetrating the limiting tube (44) and the mounting tube (4), and a friction block (46) disposed in the through slot (45) for squeezing the hanger (6); an elastic block (43) for pushing the friction block (46) to squeeze the hanger (6) is disposed on the rotating shaft of the sampling motor (41).

5. A portable drone riverbed sampling system as claimed in claim 4, characterized in that: The friction block (46) is provided with anti-slip patterns on one side opposite to the hanger (6).

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