A sampler for unmanned aerial vehicle

Abstract

The present invention discloses a sampler for an unmanned aerial vehicle. The sampler can keep the mouth of a sampling cup facing upward under the action of gravity through a rotating shaft and a rotating groove, so as to avoid spilling of water samples when the unmanned aerial vehicle is flying. At the same time, a multi-level buffer structure is used to ensure the stable flight of the unmanned aerial vehicle and reduce the shaking amplitude of the water body in the cup during the flight of the unmanned aerial vehicle. The sampling structure is characterized in that a lifting and lowering rod is a symmetrical structure, a fixed ring is fixedly arranged in the middle of the lifting and lowering rod, an outer ring is arranged in the fixed ring through a rotating shaft, a connecting ring is arranged in the outer ring through a rotating shaft, an inner ring is arranged in the connecting ring through a rotating shaft, a sampling cup is arranged on the inner ring, and the inner ring is arranged in the middle and upper part of the sampling cup, both ends of the lifting and lowering rod extend horizontally in a direction away from the fixed ring, then gradually bend downward, then bend in a direction away from the fixed ring, and then extend vertically upward, the lowest end of the lifting and lowering rod is lower than the lowest end of the sampling cup, and a shock absorbing device is arranged on the sampling device.

Description

Technical Field

[0001] The present invention relates to a sampling structure for collecting water samples by using a drone, and belongs to the technical field of drones. In particular, it relates to a sampling structure that can keep the mouth of a sampling cup facing upward under the action of gravity through a rotating shaft and a rotating groove, thereby preventing the water sample from being spilled when the drone is flying, and at the same time, through a multi-level buffer structure, ensure the stable flight of the drone and reduce the shaking amplitude of the water body in the cup during the flight of the drone. Background Art

[0002] Unmanned aerial vehicles, referred to as "drones", are the product of the military research field and are widely used in aerial reconnaissance, surveillance, communication, anti-submarine, electronic interference, etc. Traditionally, when using drones to collect river water samples, water samples are generally collected by hanging a cup on the drone's landing gear. However, after sampling, the cup is prone to shaking and deflection when the drone is flying, which can easily cause the water sample in the cup to spill out of the container, affecting subsequent detection. At the same time, the shaking cup will in turn apply shaking force to the drone, affecting its flight stability. In the prior art, a lifting mechanism is used in conjunction with a baffle to form an automatic cap on the sampling cup after sampling to avoid splashing of water. However, this automated structure not only increases the cost and bottom weight of the drone, but also fails to buffer the shaking of the internal water during the movement of the sampling cup.

[0003] Announcement No. CN107192583A discloses an intelligent water quality sampling method for a water quality sampling drone, the drone includes an unmanned aerial vehicle, a sampling control system, and a sampling cup, wherein the sampling control system includes a motor fixing plate, a winding shaft, a central control board, a self-locking motor, a coupling, a speed encoder, a sampling motor, a return baffle, a return buffer, a water level setting probe, a self-locking gear, a sampling cup pull rope and a return switch. The drone sampling structure adopts an electric structure, which is high in cost and weight, and cannot effectively reduce the shaking force of the water body in the cylinder during the flight of the drone. Summary of the invention

[0004] In order to improve the above situation, the present invention provides a sampler for drones that can keep the sampling cup mouth upward under the action of gravity through a rotating shaft and a rotating groove, thereby avoiding water samples from spilling when the drone is flying. At the same time, a multi-level buffer structure is used to ensure the smooth flight of the drone and reduce the shaking amplitude of the water in the cup during the flight of the drone.

[0005] A sampler for an unmanned aerial vehicle of the present invention is implemented as follows: A sampler for an unmanned aerial vehicle of the present invention is composed of a sampling device and a shock absorbing device. The sampling device is composed of a sampling cup, a fixed circular ring, a lifting and lowering rod, a rotating groove, an outer circular ring, a rotating shaft, an inner circular ring and a connecting circular ring. The lifting and lowering rod is a symmetrical structure. A fixed circular ring is fixedly arranged in the middle of the lifting and lowering rod. An outer circular ring is arranged in the fixed circular ring through the rotating shaft. A connecting circular ring is arranged in the outer circular ring through the rotating shaft. An inner circular ring is arranged in the connecting circular ring through the rotating shaft. A sampling cup is arranged on the inner circular ring, and the inner circular ring is arranged in the middle and upper part of the sampling cup. Both ends of the lifting and lowering rod extend horizontally in a direction away from the fixed circular ring, then gradually bend downward, and then move away from the fixed circular ring. The lowermost end of the lifting rod is lower than the lowermost end of the sampling cup. The shock absorbing device is placed on the sampling device. The shock absorbing device is composed of a main body shell, a hinge shaft, a sliding groove, a guide groove, a shock absorbing spring, a support rod, a connecting plate, a connecting block, a cross fixing plate, a buffer spring, a hinge rod, a fixing sleeve, a reset spring, a limit block, a sliding rod, a counterweight block and a sliding block. The main body shell is placed on the end of the lifting rod, and a support rod is vertically arranged at the middle of the top end of the main body shell. A connecting plate is vertically arranged at one end of the support rod. A shock absorbing spring is sleeved on the support rod. The shock absorbing spring is placed between the main body shell and the connecting plate. The other end of the support rod passes through the top end of the main body shell and extends into the main body shell. The support rod A connecting block is fixed on the other end, a cross fixing plate is vertically arranged in the main body shell, the four ends of the cross fixing plate are respectively connected to the four side walls inside the main body shell, a vertical guide groove is opened in the middle of the vertical plate of the cross fixing plate, sliding blocks are built in at both ends of the guide groove, the sliding block at the top of the guide groove is connected to the connecting block, sliding grooves are opened in the middle of both sides of the horizontal plate of the cross fixing plate, one end of the sliding groove is placed on the inner wall of the main body shell, and a sliding block is built in at the other end of the sliding groove, one end of a buffer spring is fixed on the sliding block on the horizontal plate, and the other end of the buffer spring is fixed on the inner wall of the main body shell, four connecting rods are arranged on the cross fixing plate, and the four connecting rods are connected to form a quadrilateral, four The four corners of the polygon are hingedly connected to four sliding blocks through hinge axes, a fixing sleeve is provided at the bottom of the cross fixing plate, one end of the fixing sleeve is fixedly provided at the bottom of the main body shell, the other end of the fixing sleeve is close to the guide groove, a counterweight block is fixedly provided on the sliding block at the bottom of the guide groove, the width of the counterweight block is larger than the width of the vertical plate of the cross fixing plate, one end of the sliding rod is fixedly provided at the bottom of the counterweight block, the other end of the sliding rod passes through the top of the fixing sleeve and extends into the fixing sleeve, a reset spring is built into the fixing sleeve, the reset spring sleeve is provided on the sliding rod, a limiting block is fixedly provided on the other end of the sliding rod, the outer wall of the limiting block is in contact with the inner wall of the fixing sleeve, and there is a gap between the bottom of the limiting block and the bottom of the fixing sleeve.

[0006] Beneficial effects.

[0007] 1. By rotating the shaft and the groove, the sampling cup can always keep the cup mouth upward under the action of gravity when the drone is flying, avoiding the water sample from spilling when the drone is flying.

[0008] Second, the multi-level buffer structure can ensure the stable flight of the drone and reduce the shaking of the water in the cup during the flight of the drone.

[0009] 3. Simple structure, convenient and practical.

[0010] 4. Low cost and easy to promote. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A schematic structural diagram of a sampler for an unmanned aerial vehicle according to the present invention;

[0012] Figure 2 A schematic structural diagram of a main body shell of a sampler for an unmanned aerial vehicle according to the present invention;

[0013] Figure 3 A three-dimensional structural diagram of a sampling cup of a sampler for an unmanned aerial vehicle of the present invention.

[0014] In the attached figure

[0015] The components include: a main body shell (1), a sampling cup (2), a fixed ring (3), a lifting rod (4), a hinge shaft (5), a sliding groove (6), a guide groove (7), a shock absorbing spring (8), a support rod (9), a connecting plate (10), a connecting block (11), a cross fixing plate (12), a buffer spring (13), a hinge rod (14), a fixing sleeve (15), a return spring (16), a limit block (17), a sliding rod (18), a counterweight block (19), a sliding block (20), a rotating groove (21), an outer ring (22), a rotating shaft (23), an inner ring (24), and a connecting ring (25). DETAILED DESCRIPTION

[0016] A sampler for an unmanned aerial vehicle of the present invention is implemented as follows: The sampler for an unmanned aerial vehicle of the present invention is composed of a sampling device and a shock absorbing device. The sampling device is composed of a sampling cup (2), a fixed circular ring (3), a lifting and lowering rod (4), a rotating groove (21), an outer circular ring (22), a rotating shaft (23), an inner circular ring (24) and a connecting circular ring (25). The lifting and lowering rod (4) is a symmetrical structure. A fixed circular ring (3) is fixedly arranged in the middle of the lifting and lowering rod (4). An outer circular ring (22) is arranged in the fixed circular ring (3) via the rotating shaft (23). A connecting circular ring (25) is arranged in the outer circular ring (22) via the rotating shaft (23). An inner circular ring (24) is arranged in the connecting circular ring (25) via the rotating shaft (23). The sampling cup (2) is arranged on the inner circular ring (24). The inner ring (24) is placed in the middle and upper part of the sampling cup (2), both ends of the lifting rod (4) extend horizontally in a direction away from the fixed ring (3), then gradually bend downward, then bend in a direction away from the fixed ring (3), and then extend vertically upward, the lowest end of the lifting rod (4) is lower than the lowest end of the sampling cup (2), and the shock absorbing device is placed on the sampling device, and the shock absorbing device comprises a main body shell (1), a hinge shaft (5), a sliding groove (6), a guide groove (7), a shock absorbing spring (8), a support rod (9), a connecting plate (10), a connecting block (11), a cross fixing plate (12), a buffer spring (13), a hinge rod (14), a fixing sleeve (15), a reset spring (16), a limit block (17), a sliding rod (18), and a counterweight block The main body shell (1) is composed of a main body shell (1) and a sliding block (20), the main body shell (1) is placed on the end of the lifting rod (4), a support rod (9) is vertically arranged in the middle of the top of the main body shell (1), one end of the support rod (9) is vertically arranged with a connecting plate (10), a shock absorbing spring (8) is sleeved on the support rod (9), and the shock absorbing spring (8) is arranged between the main body shell (1) and the connecting plate (10), the other end of the support rod (9) passes through the top of the main body shell (1) and extends into the main body shell (1), the other end of the support rod (9) is fixed with a connecting block (11), and a cross fixing plate (12) is vertically arranged in the main body shell (1), the four ends of the cross fixing plate (12) are respectively connected to the four side walls inside the main body shell (1), and the middle of the vertical plate of the cross fixing plate (12) is A vertical guide groove (7) is provided, and sliding blocks (20) are built in at both ends of the guide groove (7). The sliding block (20) at the top of the guide groove (7) is connected to the connecting block (11). Sliding grooves (6) are provided in the middle of both sides of the cross plate of the cross fixing plate (12). One end of the sliding groove (6) is placed on the inner wall of the main body shell (1), and the other end of the sliding groove (6) is built in. One end of a buffer spring (13) is fixed on the sliding block (20) on the cross plate, and the other end of the buffer spring (13) is fixed on the inner wall of the main body shell (1). Four connecting rods are provided on the cross fixing plate (12), and the four connecting rods are connected to form a quadrilateral. The four corners of the quadrilateral are respectively hinged to the four sliding blocks (20) through hinge shafts (5).A fixing sleeve (15) is disposed at the bottom of the cross fixing plate (12), one end of the fixing sleeve (15) is fixedly disposed at the bottom of the main body shell (1), the other end of the fixing sleeve (15) is close to the guide groove (7), a counterweight (19) is fixedly disposed on the sliding block (20) at the bottom of the guide groove (7), the width of the counterweight (19) is larger than the width of the vertical plate of the cross fixing plate (12), one end of a sliding rod (18) is fixedly disposed at the bottom of the counterweight (19), the other end of the sliding rod (18) passes through the top of the fixing sleeve (15) and extends into the fixing sleeve (15), a return spring (16) is disposed inside the fixing sleeve (15), the return spring (16) is sleeved on the sliding rod (18), a limit block (17) is fixedly disposed on the other end of the sliding rod (18), the outer wall of the limit block (17) and the inner wall of the fixing sleeve (15) are in contact with each other, and a gap exists between the bottom of the limit block (17) and the bottom of the fixing sleeve (15);

[0017] When in use, the shock absorbing device is fixed to the bottom of the drone via the connection plate (10) at the top thereof, and the take-off and landing rod (4) is arranged at the bottom of the shock absorbing device. When the drone is taking off and landing, the shock absorbing spring (8) has a shock absorbing effect. The support rod (9) drives the connection block (11) to slide in the guide groove (7), and the sliding block (20) is caused to slide in the sliding groove (6) via the hinge rod (14), thereby squeezing the buffer spring (13) and reducing the shock of the drone. When the sliding block (20) moves left and right, the counterweight block (19) and the sliding rod (18) move upward, and the limit block (17) and the fixed sleeve are moved upward. (15) compresses the return spring (16) to reduce the shock of the drone. The counterweight (19) can exert an upward force on the connecting plate (10) when moving upward, thereby enhancing the shock reduction effect on the drone. A fixed ring (3) is provided in the middle of the take-off and landing rod (4). The fixed ring (3) is connected to the rotating groove (21) through a rotating shaft (23) to fix the connecting ring (25). When sampling, it can ensure that the sampling cup (2) is always vertically downward under the action of gravity, thereby preventing the water sample from spilling when the drone is flying, thereby affecting the water sample detection of the staff.

[0018] The design of placing the inner ring (24) in the upper middle portion of the sampling cup (2) can strengthen the fixation of the inner ring (24) to the sampling cup (2), thereby preventing the sampling cup (2) from becoming top-heavy and unstable when too much water sample is contained, thereby causing the cup body to fall out of the inner ring (24);

[0019] The design that the lowest end of the take-off and landing rod (4) is lower than the lowest end of the sampling cup (2) can prevent the bottom of the sampling cup (2) from touching the ground when the drone takes off and lands, thereby causing the sampling cup (2) to be cut at an angle, causing the water sample in the sampling cup (2) to spill, and affecting the staff's water sample testing;

[0020] The design of the shock absorbing spring (8) being disposed between the main body shell (1) and the connecting plate (10) can provide a buffer and shock absorption to the drone when the drone lands;

[0021] The design in which the four ends of the cross fixing plate (12) are respectively connected to the four side walls inside the main shell (1) can make the structure inside the main shell (1) more stable, and avoid the structure inside the main shell (1) shaking due to insufficient fixation, thereby affecting the shock absorption effect of the device;

[0022] The four connecting rods are connected to form a quadrilateral, which can make the sliding block (20) easier to slide due to the instability of the quadrilateral;

[0023] The design of the return spring (16) being sleeved on the sliding rod (18) enables the sliding rod (18) to be buffered by the return spring (16) when being pulled up, and at the same time slows down the speed of being pulled up, thereby preventing the sliding rod (18) from being damaged due to excessive movement;

[0024] The design of the outer wall of the limit block (17) and the inner wall of the fixed sleeve (15) being fitted together can increase the friction between the limit block (17) and the inner wall of the fixed sleeve (15) when the sliding rod (18) moves up and down, thereby increasing the resistance when the sliding rod (18) moves, buffering and reducing shock for the device, and at the same time, can limit the movement of the sliding rod (18) so that the sliding rod (18) always maintains a straight up and down reciprocating motion;

[0025] The design of a gap between the bottom of the limit block (17) and the bottom of the fixing sleeve (15) can prevent the limit block (17) from colliding with the bottom of the main shell (1) when moving downward, thereby generating vibration, and can also prevent the limit block (17) from colliding with the main shell (1) and causing damage;

[0026] The purpose is to enable the sampling cup (2) to always keep the cup mouth facing upwards under the action of gravity through the rotating shaft (23) and the rotating groove (21), thereby preventing the water sample from being spilled when the drone is flying. At the same time, the multi-level buffer structure is used to ensure the stable flight of the drone and reduce the shaking amplitude of the water body in the cup when the drone is flying.

Claims

1. A sampler for an unmanned aerial vehicle, characterized by: The lifting and lowering rod is composed of a sampling device and a shock absorbing device. The sampling device is composed of a sampling cup, a fixed ring, a lifting and lowering rod, a rotating groove, an outer ring, a rotating shaft, an inner ring and a connecting ring. The lifting and lowering rod is a symmetrical structure. A fixed ring is fixed in the middle of the lifting and lowering rod. An outer ring is arranged in the fixed ring through the rotating shaft. A connecting ring is arranged in the outer ring through the rotating shaft. An inner ring is arranged in the connecting ring through the rotating shaft. Both ends of the lifting and lowering rod extend horizontally in a direction away from the fixed ring, then gradually bend downward, and then bend in a direction away from the fixed ring. , and then extends vertically upward. The shock absorbing device is placed on the sampling device. The shock absorbing device consists of a main body shell, a hinge shaft, a sliding groove, a guide groove, a shock absorbing spring, a support rod, a connecting plate, a connecting block, a cross fixing plate, a buffer spring, a hinge rod, a fixing sleeve, a reset spring, a limit block, a sliding rod, a counterweight block and a sliding block. The main body shell is placed on the end of the lifting and lowering rod, and a support rod is vertically placed in the middle of the top of the main body shell. A connecting plate is vertically placed at one end of the support rod. The other end of the support rod passes through the top of the main body shell and extends into the main body shell. The support The cam is provided with a plurality of sliding blocks at the ends of the plurality of sliding blocks, and the plurality of sliding blocks are provided with a plurality of sliding blocks at the ends of the plurality of sliding blocks.

2. A sampler for an unmanned aerial vehicle according to claim 1, characterized in that A sampling cup is arranged on the inner ring, and the inner ring is arranged at the upper middle part of the sampling cup.

3. A sampler for an unmanned aerial vehicle according to claim 1, characterized in that The lowest end of the lifting rod is lower than the lowest end of the sampling cup.

4. A sampler for an unmanned aerial vehicle according to claim 1, characterized in that The four ends of the cross fixing plate are respectively connected to the four side walls inside the main body shell.

5. The sampler for unmanned aerial vehicle according to claim 1, characterized in that The four connecting rods are connected to form a quadrilateral, and the four corners of the quadrilateral are respectively hinged on four sliding blocks through hinge shafts.

6. The sampler for unmanned aerial vehicle according to claim 1, characterized in that The return spring sleeve is arranged on the sliding rod, and a limiting block is fixed on the other end of the sliding rod.

7. The sampler for unmanned aerial vehicle according to claim 1, characterized in that The outer wall of the limit block and the inner wall of the fixed sleeve are in contact with each other, which can increase the friction between the limit block and the inner wall of the fixed sleeve when the sliding rod moves up and down, thereby increasing the resistance when the sliding rod moves, buffering and shock absorbing the device, and at the same time limiting the movement of the sliding rod, so that the sliding rod always maintains a straight up and down reciprocating motion.

8. The sampler for unmanned aerial vehicle according to claim 7, characterized in that There is a gap between the bottom of the limiting block and the bottom of the fixing sleeve.

9. The sampler for unmanned aerial vehicle according to claim 1, characterized in that The rotating shaft and the rotating groove enable the sampling cup to always keep the cup mouth upward under the action of gravity, thereby preventing water samples from spilling when the drone is flying. At the same time, the multi-level buffer structure ensures the stable flight of the drone and reduces the shaking amplitude of the water in the cup during the flight of the drone.

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