Hydrological monitoring device suitable for complex water area

Abstract

The invention relates to the technical field of water quality monitoring equipment, and discloses a hydrological monitoring device suitable for a complex water area, which comprises an unmanned aerial vehicle body, a winch arranged at the bottom of the unmanned aerial vehicle body, and a sampling assembly and a water quality detection assembly arranged below the winch, the bottom end of the traction rope is connected with the sampling assembly; by arranging the counterweight ring and the annular cutter below the winch and matching with the design of the locking assembly and the shearing assembly, when the sampling assembly is wound by aquatic plants, floating objects or winding sundries in a complex water area, the counterweight ring can be released to drive the annular cutter to fall to cut the sundries; if cutting is invalid, the pulling rope is cut off, and the sampling assembly is abandoned, so that the out-of-control flying and water falling accidents of the unmanned aerial vehicle caused by impurity winding are effectively avoided, the operation safety of the unmanned aerial vehicle in a complex hydrological environment is guaranteed, and the problem that equipment is easily damaged due to winding in the prior art is solved.

Description

Technical Field

[0001] This invention relates to the field of water quality monitoring equipment technology, specifically a hydrological monitoring device suitable for complex water areas. Background Technology

[0002] Hydrological monitoring is a fundamental task that involves the long-term, systematic observation, collection, and analysis of hydrological elements (such as water level, flow rate, flow velocity, water temperature, water quality, sediment content, and precipitation) of water bodies such as rivers, lakes, and seas using scientific methods and technical means. Data is collected in real-time or periodically using various monitoring equipment (such as water level gauges, flow meters, and water quality sensors), and then processed and transmitted through specialized information systems. This provides crucial information for flood control and drought relief, water resource management, water ecological protection, water conservancy project construction, and river basin planning.

[0003] Chinese patent CN213364350U discloses a drone for hydrological and water resource monitoring. It includes a body, a micro motor fixedly mounted at the top of the body, support tubes fixedly mounted around the body, and rotating shafts fixedly mounted inside each support tube. A rotor is fixedly connected to the end of each rotating shaft furthest from the body. Support frames are fixedly mounted around the bottom of the body, and a micro water pump and sampling bottle are fixedly mounted at the bottom of the body. A battery is fixedly connected to the end of the micro water pump furthest from the suction pipe, and a camera is fixedly connected to the other end of the battery. The advantage of this design is that, through the micro water pump and camera, water quality data for the target area can be collected by the micro water pump during water quality monitoring, which is more convenient and faster than traditional methods using boats.

[0004] As shown in the aforementioned patent, existing hydrological monitoring drone systems typically employ immersion-type water intake pipes for water sampling operations. However, in complex hydrological environments (such as areas with high flow rates, strong winds and waves, and waters with complex underwater topography), the water intake pipes are prone to entanglement with aquatic plants, floating objects, and tangled debris (such as discarded fishing nets and fishing lines) due to the influence of fluid dynamics. This can lead to the drone losing control during flight, and in severe cases, may cause the drone's power system to overload, ultimately resulting in a crash into the water. This not only interrupts the monitoring mission but also causes damage to equipment assets.

[0005] Therefore, it is necessary to provide a hydrological monitoring device suitable for complex water areas to solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this invention is to provide a hydrological monitoring device suitable for complex water areas, which effectively avoids drone flight loss of control and water crash accidents caused by debris entanglement, ensures the operational safety of drones in complex hydrological environments, and solves the problem of equipment being easily damaged by entanglement in the prior art.

[0007] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a hydrological monitoring device suitable for complex water areas, comprising a drone body, a winch installed at the bottom of the drone body, and a sampling component and a water quality detection component installed below the winch. A traction rope is wound and installed on the winch, and the bottom end of the traction rope is connected to the sampling component. A support pole is fixedly installed on the bottom wall of the drone body. A cutting component for cutting the traction rope is provided on the support pole. A counterweight ring is provided below the winch. An annular cutter is installed at the bottom end of the counterweight ring. The sampling component passes through the inside of the annular cutter. A locking component for locking the counterweight ring is provided on the support pole.

[0008] A further configuration of the present invention is as follows: the water quality testing component includes a first electric push rod and a detector, the first electric push rod is fixedly installed on a support column, and the output end of the first electric push rod passes through the support column and is fixedly connected to the detector.

[0009] A further feature of the present invention is that: a detection chamber is provided inside the detector, a water receiving tank is provided at the top of the detector, a water inlet communicating with the detection chamber is provided in the middle of the water receiving tank, multiple detection sensors are provided inside the detection chamber, a water outlet is provided at the bottom of the detector, and a solenoid valve is connected below the water outlet.

[0010] A further configuration of the present invention is as follows: the locking assembly includes a second electric push rod, a locking rod, and a limiting plate. The top end of the limiting plate is fixedly connected to the detector. The inner circumferential wall of the counterweight ring is in contact with the limiting plate. The second electric push rod is fixedly installed on the support rod. The output end of the second electric push rod passes through the support rod and is fixedly connected to the locking rod. A slot is provided on the side wall of the counterweight ring, and the end of the locking rod extends into the slot.

[0011] A further configuration of the present invention is as follows: the cutting assembly includes a third electric push rod and electric scissors, the third electric push rod is fixedly installed on the support column, the output end of the third electric push rod passes through the support column, and the electric scissors are installed on the output end of the third electric push rod.

[0012] A further configuration of the present invention is as follows: the sampling assembly includes a sampling tube, a piston slidably installed inside the sampling tube, a stopper rod fixedly installed at the top of the piston, and a sampling port located at the bottom of the sampling tube; the bottom end of the traction rope is fixedly connected to a first connecting rope and a second connecting rope, a gap is provided between the first connecting rope and the second connecting rope, the bottom end of the first connecting rope is fixedly connected to the top of the stopper rod, a float is slidably mounted on the first connecting rope, the bottom end of the second connecting rope is fixedly connected to the top of the sampling tube, a positioning bead is slidably mounted on the first connecting rope, the sliding of the positioning bead is damped, and an adjustment assembly for adjusting the position of the positioning bead is provided on the support rod.

[0013] A further feature of the present invention is that a through hole is provided in the middle of the buoy, a first connecting rope passes through the through hole, and a notch is provided on the buoy, through which a second connecting rope passes.

[0014] A further configuration of the present invention is as follows: the adjustment assembly includes a guide rail, a double-ended screw rotatably mounted inside the guide rail, a motor fixedly mounted at the end of the guide rail, two slide blocks slidably mounted inside the guide rail, and two clamping rods fixedly connected to the slide blocks. The two clamping rods are arranged parallel to each other, and a traction rope passes through the two clamping rods. A support cross plate is fixedly connected to the guide rail, and the support cross plate is fixedly connected to a support upright. The double-ended screw passes through the two slide blocks and is threadedly connected to the two slide blocks. The output end of the motor is fixedly connected to the end of the double-ended screw.

[0015] A further provision of the present invention is that the top of the sampling tube is provided with an upper conical portion, and the bottom of the sampling tube is provided with a lower conical portion.

[0016] A further feature of the present invention is that: a mounting box is fixedly installed on the bottom wall of the detector, a rope winding wheel is rotatably installed inside the mounting box, a third connecting rope is wound on the rope winding wheel, and the bottom end of the third connecting rope extends out of the rope winding wheel and is fixedly connected to the counterweight ring.

[0017] In summary, the present invention has the following beneficial effects: 1. This invention, by setting a counterweight ring and annular cutter below the winch, and in conjunction with the design of a locking component and a cutting component, allows the counterweight ring to be released first when the sampling component is entangled by aquatic plants, floating objects, or tangled debris in complex waters. This causes the annular cutter to fall and cut the debris. If the cutting is ineffective, the traction rope is cut and the sampling component is abandoned. This effectively avoids drone flight loss of control and crash accidents caused by debris entanglement, ensuring the safety of drone operations in complex hydrological environments and solving the problem of equipment being easily damaged by entanglement in the prior art. 2. This invention, through the cooperation of the float, positioning bead, and adjustment component in the sampling assembly, can precisely adjust the sampling depth to adapt to the sampling requirements of different water depths. Combined with the streamlined design of the upper and lower conical parts of the sampling tube, it can reduce water entry resistance and the probability of debris entanglement. At the same time, the water quality detection component, through the setting of multi-parameter detection sensors and electric push rod, can comprehensively detect parameters such as temperature, turbidity, and conductivity of the collected water sample, reliably realizing efficient collection and accurate detection of water samples in complex water areas, and solving the technical problem of easy interruption of monitoring tasks in complex environments in existing systems. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention after removing the drone body; Figure 3 This is a schematic diagram of the sampling component of the present invention; Figure 4 This is a cross-sectional view of the sampling component of the present invention; Figure 5 This is a schematic diagram of the structure of the pontoon of the present invention; Figure 6 This is a schematic diagram of the locking component and counterweight ring of the present invention; Figure 7 This is a cross-sectional structural diagram of the detector of the present invention; Figure 8 This is a cross-sectional view of the locking component and counterweight ring of the present invention; Figure 9 This is a schematic diagram of the structure of the adjustment component of the present invention.

[0019] In the diagram: 1. UAV body; 2. Winch; 3. Support pole; 4. Traction rope; 5. First connecting rope; 6. Second connecting rope; 7. Sampling tube; 701. Lower conical part; 702. Upper conical part; 703. Sampling port; 8. Piston; 9. Float; 901. Through hole; 902. Notch; 10. Plug rod; 11. Positioning bean; 12. First electric push rod; 13. Detector; 1301. Water receiving tank; 1302. Water inlet; 1303. Water outlet; 13 04. Solenoid valve; 1305. Detection sensor; 1306. Detection chamber; 14. Adjustment assembly; 141. Guide rail; 142. Double-ended screw; 143. Motor; 144. Slide; 145. Clamping rod; 15. Supporting cross plate; 16. Second electric push rod; 17. Locking rod; 18. Counterweight ring; 1801. Slot; 19. Circular cutter; 20. Limiting plate; 21. Mounting box; 22. Third connecting rope; 23. Third electric push rod; 24. Electric scissors. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings in the embodiments of the present invention.

[0021] Please see Figures 1-9 In this embodiment of the invention, a hydrological monitoring device suitable for complex water areas includes a drone body 1, a winch 2 located at the bottom of the drone body 1, and a sampling component and a water quality detection component located below the winch 2. The winch 2 is fixedly connected to the bottom wall of the drone body 1. A traction rope 4 is wound and installed on the winch 2, and the bottom end of the traction rope 4 is connected to the sampling component. A support pole 3 is fixedly installed on the bottom wall of the drone body 1. A cutting component for cutting the traction rope 4 is provided on the support pole 3. A counterweight ring 18 is provided below the winch 2. An annular cutter 19 is installed at the bottom end of the counterweight ring 18. The sampling component passes through the inside of the annular cutter 19. A locking component for locking the counterweight ring 18 is provided on the support pole 3. The counterweight ring 18 is made of metal with a high density. In actual use, the drone is controlled to fly to the sampling position in the water area, and then the winch 2 is controlled to release the traction rope 4. As the traction rope 4 is released, the sampling component moves downward. Once in the water and reaching the sampling depth, the sampling component is controlled to pump water for sampling. After sampling, the winch 2 is controlled to wind the traction rope 4, thereby moving the sampling component upwards and resetting it. The water sample extracted by the sampling component is then discharged into the water quality testing component for testing. If the sampling component is accidentally entangled by aquatic plants, floating objects, or tangled debris (such as discarded fishing nets or fishing lines), the drone is first controlled to fly to a higher altitude while continuing to release the traction rope 4. Then, the locking component releases the lock on the counterweight ring 18, causing the counterweight ring 18 to fall downwards under its own weight and crash into the water. The blade of the ring cutter 19 cuts the aquatic plants, floating objects, and tangled debris near the sampling component, allowing the sampling component to be removed from the water surface. If the ring cutter 19 cannot cut the debris, the cutting component is controlled to cut the traction rope 4, thus ensuring the drone's evacuation by abandoning the sampling component.

[0022] This invention, by setting a counterweight ring 18 and annular cutter 19 below the winch 2, and in conjunction with the design of locking and cutting components, allows the counterweight ring 18 to be released first when the sampling component is entangled by aquatic plants, floating objects, or tangled debris in complex waters. This causes the annular cutter 19 to fall and cut the debris. If the cutting is ineffective, the traction rope 4 is cut to abandon the sampling component. This effectively avoids drone flight loss of control and crash accidents caused by debris entanglement, ensuring the safety of drone operations in complex hydrological environments and solving the problem of equipment being easily damaged by entanglement in the prior art.

[0023] In this embodiment, preferably, the water quality testing component includes a first electric push rod 12 and a detector 13. The first electric push rod 12 is fixedly mounted on the support rod 3, and the output end of the first electric push rod 12 passes through the support rod 3 and is fixedly connected to the detector 13. The detector 13 has a testing cavity 1306 inside, a water receiving trough 1301 on the top of the detector 13, and a water inlet 1302 communicating with the testing cavity 1306 in the middle of the water receiving trough 1301. Multiple detection sensors are arranged inside the testing cavity 1306. 1305, the bottom of the detector 13 is provided with a water outlet 1303, and a solenoid valve 1304 is connected below the water outlet 1303; the detection sensor 1305 can be a temperature sensor, turbidity sensor, conductivity sensor, pH sensor, etc., to detect multiple parameters of the water sample. During detection, the water sample drips into the water receiving tank 1301, enters the detection chamber 1306 through the water inlet 1302, and is then detected by the detection sensor 1305. After the detection is completed, the solenoid valve 1304 is opened to discharge the water sample through the water outlet 1303.

[0024] In this embodiment, preferably, the locking assembly includes a second electric push rod 16, a locking rod 17, and a limiting plate 20. The top end of the limiting plate 20 is fixedly connected to the detector 13, and the inner peripheral wall of the counterweight ring 18 is in contact with the limiting plate 20. The second electric push rod 16 is fixedly mounted on the supporting rod 3, and the output end of the second electric push rod 16 passes through the supporting rod 3 and is fixedly connected to the locking rod 17. A slot 1801 is provided on the side wall of the counterweight ring 18, and the end of the locking rod 17 extends into the slot 1801. Through the cooperation of the limiting plate 20 and the locking rod 17, the counterweight ring 18 can be locked. When the counterweight ring 18 needs to be released from its lock to fall, the output end of the second electric push rod 16 is retracted, causing the locking rod 17 to be pulled out of the slot 1801, thus causing the counterweight ring 18 to fall downwards and hit the water. The annular cutter 19 then cuts aquatic plants, floating objects, and tangled debris near the sampling component. A mounting box 21 is fixedly installed on the bottom wall of the detector 13. A rope-winding wheel (not shown in the figure) is rotatably mounted inside the mounting box 21. The rope-winding wheel is rotatably connected to the mounting box 21 via bearings, minimizing resistance during rotation. A third connecting rope 22 is wound around the rope-winding wheel. The bottom end of the third connecting rope 22 extends out of the rope reel and is fixedly connected to the counterweight ring 18, so that after the counterweight ring 18 falls downwards, it can be retrieved by the third connecting rope 22. An electric shear can be installed inside the mounting box 21 to cut the third connecting rope 22, so as to cut and separate the counterweight ring 18 when it is difficult to retrieve. Furthermore, to improve the debris cleaning effect, another embodiment of the counterweight ring 18 and the annular cutter 19 is provided. In this embodiment, the annular cutter 19 is rotatably connected to the counterweight ring 18, and the annular cutter 19 is provided with a drive structure for driving the counterweight ring 18 to rotate. The drive structure includes a drive motor (see figure). The drive motor is fixedly installed inside the counterweight ring 18 and two gears (not shown in the figure). The output end of the drive motor 143 is fixedly connected to one of the gears, and the other gear is fixedly mounted on the annular cutter 19. The two gears mesh, so that the drive motor can drive one of the gears to rotate, which in turn drives the other gear to rotate, thereby driving the annular cutter 19 to rotate. The drive motor is powered by a battery installed in the counterweight ring 18 or by a wire installed in the third connecting rope 22. When the counterweight ring 18 falls to cut the debris, the rotation of the annular cutter 19 can be controlled to improve the cutting effect.

[0025] In this embodiment, preferably, the cutting assembly includes a third electric push rod 23 and an electric scissors 24. The third electric push rod 23 is fixedly installed on the support rod 3, and the output end of the third electric push rod 23 passes through the support rod 3. The electric scissors 24 are installed on the output end of the third electric push rod 23. When it is necessary to cut the traction rope 4, the electric scissors 24 is first controlled to open, and then the output end of the third electric push rod 23 is controlled to extend so that the traction rope 4 is located inside the blade of the electric scissors 24. Then, the blade of the electric scissors 24 is controlled to close to cut the traction rope 4.

[0026] To adjust the sampling depth of the sampling component in order to collect water samples at different depths, the following embodiments were set up.

[0027] Please see Figures 2-9In this embodiment of the invention, the sampling assembly includes a sampling tube 7, a piston 8 slidably installed inside the sampling tube 7, a stopper rod 10 fixedly installed at the top of the piston 8, and a sampling port 703 located at the bottom of the sampling tube 7. A first connecting rope 5 and a second connecting rope 6 are fixedly connected to the bottom end of the traction rope 4, with a gap between them. The bottom end of the first connecting rope 5 is fixedly connected to the top end of the stopper rod 10. A float 9 is slidably mounted on the first connecting rope 5, with a through hole 901 in the middle of the float 9. The first connecting rope 5 passes through the through hole 901, and a notch 90 is provided on the float 9. 2. The second connecting rope 6 passes through the notch 902, and its bottom end is fixedly connected to the top of the sampling tube 7. A positioning bead 11 is slidably mounted on the first connecting rope 5, and the sliding of the positioning bead 11 is damped. An adjustment component 14 for adjusting the position of the positioning bead 11 is provided on the support rod 3. In use, the position of the positioning bead 11 is first adjusted to control the sampling water depth. The sampling depth is the distance between the positioning bead 11 and the sampling tube 7. When the sampling tube 7 sinks into the water, the float 9 is suspended on the water surface under its own buoyancy. The overall density of the sampling tube 7 is less than the density of water, and the sampling depth is... As tube 7 sinks, the position of float 9 on the first connecting rope 5 gradually rises. When float 9 contacts positioning bead 11, it can no longer move upward relative to the first connecting rope 5. At this point, float 9 pulls the first traction rope 4 upward through buoyancy, which in turn pulls the stopper rod 10 upward. When the stopper rod 10 moves upward, it drives the piston 8 to move upward relative to sampling tube 7, thereby drawing river water into sampling tube 7 through sampling port 703. After sampling is completed, winch 2 retracts traction rope 4, which in turn drives the first connecting rope 5 upward. When the first connecting rope 5 moves upward, it drives sampling tube 7 upward. When the device moves to a height higher than the detector 13, the two clamping rods 145 are controlled to move closer to each other, so that the distance between the two clamping rods 145 is less than the diameter of the float 9. The output end of the first electric push rod 12 is controlled to extend, so that the detector 13 moves to the bottom of the sampling tube 7. As the sampling tube 7 continues to move, the clamping rods 145 come into contact with the float 9, thereby pushing the plug rod 10 to move downward relative to the sampling tube 7 through the float 9, which in turn drives the piston 8 to move, thereby squeezing the water sample in the sampling tube 7 through the sampling port 703. The squeezed water sample is introduced into the detection chamber 1306 for detection through the water receiving tank 1301 above the detector 13.

[0028] In this embodiment, preferably, the adjustment assembly 14 includes a guide rail 141, a double-ended screw 142 rotatably mounted inside the guide rail 141, a motor 143 fixedly mounted at the end of the guide rail 141, two slide blocks 144 slidably mounted inside the guide rail 141, and two clamping rods 145 fixedly connected to the slide blocks 144. The two clamping rods 145 are arranged parallel to each other, and the traction rope 4 passes between the two clamping rods 145. A support cross plate 15 is fixedly connected to the guide rail 141, and the support cross plate 15 and the support vertical plate are connected together. Rod 3 is fixedly connected, and the double-ended screw 142 passes through the two slides 144, and the double-ended screw 142 is threadedly connected to the two slides 144. The output end of the motor 143 is fixedly connected to the end of the double-ended screw 142. The motor 143 can drive the double-ended screw 142 to rotate. The double-ended screw 142 has two opposite threads, so that when the double-ended screw 142 rotates, it drives the two slides 144 to move in opposite directions, which in turn drives the two clamping rods 145 to move in opposite directions. The position of the positioning bead 11 needs to be adjusted downward. When the traction rope 4 moves upward, the first connecting rope 5 and the second connecting rope 6 gradually move between the two clamping rods 145. At this time, the two clamping rods 145 are driven to move closer to each other, so that the distance between the two clamping rods 145 is less than the diameter of the positioning bead 11. Thus, after the positioning bead 11 contacts the clamping rods 145, as the first connecting rope 5 and the second connecting rope 6 continue to move upward, the position of the positioning bead 11 on the first connecting rope 5 moves downward. After adjusting to the designated position, the two clamping rods 145 can be controlled to move away from each other. When it is necessary to adjust the position of the positioning bead 11 upward, when the positioning bead 11 moves above the two clamping rods 145, the two clamping rods 145 are controlled to move closer to each other again, so that the distance between the two clamping rods 145 is less than the diameter of the positioning bead 11. Then the traction rope 4 is released, causing the sampling component to move downward, while the positioning bead 11 is blocked by the clamping rods 145, causing the positioning bead 11 to move upward from the position on the first connecting rope 5. After adjusting to the designated position, the two clamping rods 145 can be controlled to move away from each other.

[0029] It should be noted that the drone is equipped with multiple cameras, which can monitor the drone's flight and sampling operations. The drone also has a control module that controls the operation of various electrical components. The specific control method is existing technology and will not be described in detail here.

[0030] In this embodiment, preferably, the top of the sampling tube 7 is provided with an upper conical part 702 and the bottom of the sampling tube 7 is provided with a lower conical part 701. The upper conical part 702 and the lower conical part 701 can play a counterweight role and reduce the resistance when the sampling tube 7 enters the water. The streamlined design can also effectively reduce the probability of aquatic plants and entangled debris getting tangled on the sampling tube 7.

[0031] The above description is only a preferred embodiment of the present invention. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of this patent application are included in the scope of this patent application.

Claims

1. A hydrological monitoring device suitable for complex water areas, comprising a drone body (1), a winch (2) disposed at the bottom of the drone body (1), and a sampling component and a water quality detection component disposed below the winch (2), wherein a traction rope (4) is wound and installed on the winch (2), and the bottom end of the traction rope (4) is connected to the sampling component, characterized in that: A support pole (3) is fixedly installed on the bottom wall of the UAV body (1). A cutting component for cutting the traction rope (4) is provided on the support pole (3). A counterweight ring (18) is provided below the winch (2). A ring cutter (19) is installed at the bottom end of the counterweight ring (18). The sampling component passes through the inside of the ring cutter (19). A locking component for locking the counterweight ring (18) is provided on the support pole (3).

2. The hydrological monitoring device suitable for complex water areas according to claim 1, characterized in that: The water quality testing component includes a first electric push rod (12) and a detector (13). The first electric push rod (12) is fixedly installed on the support rod (3). The output end of the first electric push rod (12) passes through the support rod (3) and is fixedly connected to the detector (13).

3. A hydrological monitoring device suitable for complex water areas according to claim 2, characterized in that: The detector (13) has a detection chamber (1306) inside, a water receiving tank (1301) on the top of the detector (13), a water inlet (1302) in the middle of the water receiving tank (1301) that communicates with the detection chamber (1306), a plurality of detection sensors (1305) inside the detection chamber (1306), a water outlet (1303) at the bottom of the detector (13), and a solenoid valve (1304) connected below the water outlet (1303).

4. A hydrological monitoring device suitable for complex water areas according to claim 1, characterized in that: The locking assembly includes a second electric push rod (16), a locking rod (17), and a limiting plate (20). The top of the limiting plate (20) is fixedly connected to the detector (13). The inner circumferential wall of the counterweight ring (18) is in contact with the limiting plate (20). The second electric push rod (16) is fixedly installed on the support rod (3). The output end of the second electric push rod (16) passes through the support rod (3) and is fixedly connected to the locking rod (17). The side wall of the counterweight ring (18) is provided with a slot (1801). The end of the locking rod (17) extends into the slot (1801).

5. A hydrological monitoring device suitable for complex water areas according to claim 1, characterized in that: The shearing assembly includes a third electric push rod (23) and an electric shear (24). The third electric push rod (23) is fixedly installed on the support rod (3). The output end of the third electric push rod (23) passes through the support rod (3), and the electric shear (24) is installed on the output end of the third electric push rod (23).

6. A hydrological monitoring device suitable for complex water areas according to claim 1, characterized in that: The sampling assembly includes a sampling tube (7), a piston (8) slidably installed inside the sampling tube (7), a stopper rod (10) fixedly installed at the top of the piston (8), and a sampling port (703) at the bottom of the sampling tube (7). The bottom end of the traction rope (4) is fixedly connected to a first connecting rope (5) and a second connecting rope (6). A gap is provided between the first connecting rope (5) and the second connecting rope (6). The bottom end of the first connecting rope (5) is fixedly connected to the top end of the stopper rod (10). A float (9) is slidably installed on the first connecting rope (5). The bottom end of the second connecting rope (6) is fixedly connected to the top of the sampling tube (7). A positioning bead (11) is slidably installed on the first connecting rope (5). The sliding of the positioning bead (11) is damped. An adjustment assembly (14) for adjusting the position of the positioning bead (11) is provided on the support rod (3).

7. A hydrological monitoring device suitable for complex water areas according to claim 6, characterized in that: A through hole (901) is provided in the middle of the float (9), and a first connecting rope (5) passes through the through hole (901). A notch (902) is provided on the float (9), and a second connecting rope (6) passes through the notch (902).

8. A hydrological monitoring device suitable for complex water areas according to claim 6, characterized in that: The adjustment assembly (14) includes a guide rail (141), a double-headed screw (142) rotatably installed inside the guide rail (141), a motor (143) fixedly installed at the end of the guide rail (141), two slide blocks (144) slidably installed inside the guide rail (141), and two clamping rods (145) fixedly connected to the slide blocks (144). The two clamping rods (145) are arranged parallel to each other. The traction rope (4) passes through the two clamping rods (145). A support plate (15) is fixedly connected to the guide rail (141). The support plate (15) is fixedly connected to the support rod (3). The double-headed screw (142) passes through the two slide blocks (144) and is threadedly connected to the two slide blocks (144). The output end of the motor (143) is fixedly connected to the end of the double-headed screw (142).

9. A hydrological monitoring device suitable for complex water areas according to claim 6, characterized in that: The top of the sampling tube (7) is provided with an upper conical part (702), and the bottom of the sampling tube (7) is provided with a lower conical part (701).

10. A hydrological monitoring device suitable for complex water areas according to claim 2, characterized in that: The bottom wall of the detector (13) is fixedly installed with an installation box (21), and a rope wheel is rotatably installed inside the installation box (21). A third connecting rope (22) is wound on the rope wheel, and the bottom end of the third connecting rope (22) extends out of the rope wheel and is fixedly connected to the counterweight ring (18).

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