Environmental water sample detection device and detection method thereof

Abstract

The present invention discloses an environmental water sample detection device and a detection method thereof, and relates to the technical field of environmental water sample detection. It comprises a floating plate, four T-shaped plates are fixedly arranged on the outer edge of the top surface of the floating plate, a first U-shaped seat is fixedly arranged in the middle of the outer side surface of the T-shaped plate, a second U-shaped seat is arranged on the outer side of the first U-shaped seat, and the first U-shaped seat is connected to the second U-shaped seat through a connecting rod mechanism; an L-shaped plate is fixedly arranged on the outer side surface of the second U-shaped seat, a semicircular clamping ring is fixedly arranged on the bottom of the outer side surface of the L-shaped plate, a cable is inserted and slidably inserted inside the semicircular clamping ring, a counterweight is fixedly arranged on the bottom end of the cable, and a water quality detector is installed on the bottom end of each counterweight. The present invention can flexibly adjust the depth of the water quality detector extending into the water body according to needs, thereby realizing flexible adjustment of the detection depth.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental water sample detection, and in particular to an environmental water sample detection device and a detection method thereof. Background Art

[0002] In the field of environmental science, water sample testing is an important means of monitoring water quality and protecting the environment. Traditional water sample testing methods mainly rely on laboratory equipment, which often requires complex operations and professionals. Not only is it costly and time-consuming, but it is also difficult to achieve rapid on-site testing in some cases.

[0003] The Chinese invention patent discloses an environmental water sample detection device (publication number: CN114264636B), which includes: a water intake pipe, the outlet of which is connected to a first power member; a reagent tank, the reagent tank is connected to a second power member; a detection structure, including a mixing tank connected to the outlets of the water intake pipe and the reagent tank respectively; a cleaning pipe, the inlet of which is connected to a water source, and the outlet of which is connected to the first power member, so as to transport pure water to the mixing tank under the drive of the first power member to clean the mixing tank after use.

[0004] However, the above-mentioned devices are difficult to achieve rapid on-site detection, and cannot flexibly adjust the detection depth. When faced with water bodies of different depths, their applicability will be greatly reduced. When a sudden pollution incident occurs in a water body, the distribution depth of the pollutants in the water body may be different. If the detection device cannot flexibly adjust the detection depth, it is impossible to accurately determine the specific location and depth range of the pollutants in the water body. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an environmental water sample detection device and a detection method thereof.

[0006] In order to solve the problems existing in the prior art, the present invention adopts the following technical solutions: The present invention provides an environmental water sample detection device, comprising a floating plate, wherein four evenly distributed T-shaped plates are fixedly arranged on the outer edge of the top surface of the floating plate, a first U-shaped seat is fixedly arranged in the middle of the outer side surface of each T-shaped plate, a second U-shaped seat is arranged on the outer side of each first U-shaped seat, and each first U-shaped seat is connected to the second U-shaped seat on the adjacent side through a connecting rod mechanism; An L-shaped plate is fixed to the outer side of each of the second U-shaped seats, a semicircular clamp is fixed to the bottom of the outer side of each of the L-shaped plates, a cable is slidably inserted inside each of the semicircular clamps, a counterweight is fixed to the bottom end of each of the cables, and a water quality detector is installed at the bottom end of each of the counterweights.

[0007] Preferably, a pair of linkage shafts are rotatably inserted in the opening of the second U-shaped seat, a concentrically fixed notched gear is sleeved on the middle part of each linkage shaft, and the pair of notched gears are meshed and connected, and a second connecting rod is fixed to the notched part of each notched gear.

[0008] Preferably, the connecting rod mechanism comprises a first connecting rod, a second connecting rod and an articulated connecting rod, a pair of first connecting rods articulated in a "V" shape are arranged in the opening of the first U-shaped seat, and a plurality of pairs of articulated connecting rods articulated in an "X" shape are arranged between the pair of first connecting rods and the pair of second connecting rods; The outer ends of a pair of the first connecting rods are movably hinged to an adjacent pair of hinged connecting rods, the inner ends of a pair of the second connecting rods are movably hinged to an adjacent pair of hinged connecting rods, and the two adjacent pairs of hinged connecting rods are movably hinged to each other.

[0009] Preferably, a pair of rectangular sliding holes are opened on both sides of the top of the T-shaped plate, and a U-shaped sliding plate is slidably inserted inside the pair of rectangular sliding holes. An extended pin shaft is fixed to the open end of the U-shaped sliding plate, and the extended pin shaft is inserted through the hinge of the innermost pair of hinged connecting rods.

[0010] Preferably, a rectangular groove is provided in the middle of the top surface of the floating plate, a servo motor with the output end facing upward is installed in the rectangular groove, a drive shaft is fixed to the end of the motor shaft of the servo motor, a concentrically fixed widened gear is sleeved on the middle part of the drive shaft, and a concentrically fixed active bevel gear is sleeved on the top end of the drive shaft.

[0011] Preferably, a pair of staggered L-shaped racks are respectively meshed on the left and right sides and the front and rear sides of the widened gear, and the two pairs of L-shaped racks are stacked up and down, and the outer end of each L-shaped rack is fixedly connected to the inner end of the U-shaped slide on the adjacent side.

[0012] Preferably, four vertical plates evenly distributed around the rectangular groove are fixed on the top surface of the floating plate, a driven shaft is rotatably inserted in the middle of the inner side surface of each of the vertical plates, and the inner end of each of the driven shafts is sleeved with a concentrically fixed driven bevel gear, and each of the driven bevel gears is meshed and connected with the driving bevel gear.

[0013] Preferably, a single ear seat is fixedly provided at the middle and upper part of the inner side surface of the vertical plate, a first L-shaped tube is fixedly provided between the top end of the vertical plate and the single ear seat and is distributed through the vertical plate, and a second L-shaped tube is fixedly provided at the top of the outer side surface of the L-shaped plate.

[0014] Preferably, a concentrically fixed wire reel is sleeved on the middle of the driven shaft, and the end of the cable away from the counterweight is in a U-shaped state, first passes through the second L-shaped tube upward, then passes through the first L-shaped tube horizontally, and then is evenly wound around the wire reel downward.

[0015] The present invention also provides a detection method of an environmental water sample detection device, using the above-mentioned environmental water sample detection device, comprising the following steps: Step 1: Place the floating plate on the water surface. Under the driving action of the servo motor, the motor shaft of the servo motor drives the driving shaft, the widened gear, and the active bevel gear to rotate synchronously. The widened gear meshes to drive the L-shaped rack and the U-shaped slide plate to slide outward along the rectangular sliding hole on the T-shaped plate. Step 2: First, the innermost pair of hinged connecting rods are extended to expand in an "X" shape by extending the pin shaft, and the pair of first connecting rods are closed in a "V" shape, and then several pairs of hinged connecting rods are extended in an "X" shape, and then the pair of second connecting rods are closed in a "V" shape, and the pair of notched gears are meshed and rotated with each other, thereby driving the second U-shaped seat and the L-shaped plate to translate in a direction away from the first U-shaped seat; Step 3: The active bevel gear meshes to drive the driven bevel gear, the driven shaft, and the winding wheel to rotate. The winding wheel releases the cable, and under the action of the counterweight, drives the water quality detector to extend downward into the water; Step 4: As the L-shaped plate moves farther away from the buoy, the length of the cable released by the winding wheel increases exponentially, so that the water quality detector is inserted deeper into the water. The surrounding water quality is tested in real time through the water quality detector, and the test data is transmitted to the background for summary analysis.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, by rotating the winding wheel to release the cable, the water quality detector can go deep into different depths to detect water quality, thereby realizing flexible adjustment of the detection depth, so that the physical, chemical and biological characteristics of each depth level of the water body can be mastered, and the water body information can be fully obtained, providing rich data for understanding the overall water quality status; when abnormal water quality is found, the depth range of the problem can be accurately determined, and the depth of the problem can be accurately located, which is helpful to analyze the cause and take targeted treatment measures; 2. In the present invention, the detection depth can be flexibly changed by adjusting the distance between the L-shaped plate and the floating plate, which can adapt to different water environments and improve the versatility and applicability of the device; by arranging the detection device based on the floating plate, the interference to the water environment is small, which is conducive to maintaining the natural state of the water ecosystem and protecting the water environment during detection; 3. Use water quality detectors to detect the surrounding water quality in real time, and transmit the detection data to the background for summary analysis in real time, so that when there are sudden changes in water quality, we can respond quickly to reduce adverse effects; the background summarizes and analyzes a large amount of data to explore the long-term changes in water quality and provide important guidance for the formulation of water resource management strategies, water body protection and governance plan planning. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the floating plate and one side cable in the present invention; Figure 3 It is a structural schematic diagram of the floating plate and four U-shaped sliding plates in the present invention; Figure 4 It is a structural schematic diagram of the floating plate and four vertical plates in the present invention; Figure 5 It is a structural schematic diagram of the connecting rod mechanism in the present invention; Figure 6 It is an exploded schematic diagram of the connecting rod mechanism in the present invention; Figure 7 It is a schematic diagram of the structure of the cable in the present invention; Figure 8 It is a schematic diagram of the explosion of the cable in the present invention; Serial numbers in the figure: 1. Floating plate; 11. servo motor; 12. driving shaft; 13. widened gear; 14. active bevel gear; 15. U-shaped slide plate; 16. L-shaped rack; 17. driven shaft; 18. driven bevel gear; 2. T-shaped plate; 21. first U-shaped seat; 22. first connecting rod; 23. hinged connecting rod; 24. extended pin shaft; 25. second U-shaped seat; 26. linkage shaft; 27. notched gear; 28. second connecting rod; 3. vertical plate; 31. single ear seat; 32. first L-shaped tube; 33. L-shaped plate; 34. second L-shaped tube; 35. semicircular clamp; 36. winding clamp wheel; 37. cable; 38. counterweight; 39. water quality detector. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] Embodiment 1: This embodiment provides an environmental water sample detection device, see Figure 1-8 , comprising a floating plate 1, four evenly distributed T-shaped plates 2 are fixed on the outer edge of the top surface of the floating plate 1, a first U-shaped seat 21 is fixed in the middle of the outer side surface of each T-shaped plate 2, a second U-shaped seat 25 is provided on the outer side of each first U-shaped seat 21, and each first U-shaped seat 21 is connected to the second U-shaped seat 25 on the adjacent side through a connecting rod mechanism; Each second U-shaped seat 25 is fixedly provided with an L-shaped plate 33 on the outer side, and each L-shaped plate 33 is fixedly provided with a semicircular clamping ring 35 on the bottom of the outer side. A cable 37 is slidably inserted inside each semicircular clamping ring 35, and a counterweight 38 is fixedly provided at the bottom end of each cable 37. A water quality detector 39 is installed at the bottom end of each counterweight 38. The water quality detector 39 can be used to detect the surrounding water quality in real time, and transmit the detection data to the background for summary analysis, so as to realize dynamic monitoring of the water quality of the water body; once the water quality of the water body changes suddenly, such as being affected by sudden events such as pollution leakage, relevant personnel can receive data change information in the background at the first time, so that they can respond quickly and take measures such as emergency cutting off of pollution sources and launching emergency plans, so as to minimize the adverse effects that water quality deterioration may cause on the environment, surrounding ecosystems, and water use.

[0020] Embodiment 2: Based on Embodiment 1, this embodiment also includes the following contents: like Figure 5 and Figure 6 As shown, a pair of linkage shafts 26 are rotatably inserted in the opening of the second U-shaped seat 25, and a concentrically fixed notch gear 27 is sleeved on the middle of each linkage shaft 26, and the pair of notch gears 27 are meshed and connected, and a second connecting rod 28 is fixed to the notch portion of each notch gear 27. When the pair of second connecting rods 28 are closed in a "V" shape, the pair of notch gears 27 can mesh and rotate with each other; The connecting rod mechanism includes a first connecting rod 22, a second connecting rod 28, and an articulated connecting rod 23. A pair of first connecting rods 22 are articulated and distributed in a "V" shape in the opening of the first U-shaped seat 21. The pair of first connecting rods 22 can be closed in a "V" shape, and a plurality of pairs of articulated connecting rods 23 are articulated and distributed in an "X" shape between the pair of first connecting rods 22 and the pair of second connecting rods 28. The outer ends of a pair of first connecting rods 22 are movably hinged to an adjacent pair of hinged connecting rods 23, the inner ends of a pair of second connecting rods 28 are movably hinged to an adjacent pair of hinged connecting rods 23, and the two adjacent pairs of hinged connecting rods 23 are movably hinged to each other, and a plurality of pairs of hinged connecting rods 23 can be unfolded in an "X" shape; The floating plate 1 is used as a support to arrange the water quality detector 39 and its related adjustment structure (L-shaped plate 33, winding wheel 36, etc.). Compared with some traditional water quality detection equipment fixed on the bottom of the water or the shore, the interference to the water environment is relatively small; the floating plate 1 floats on the water surface and will not cause damage to the ecological environment of the bottom of the water in the form of piling and fixation. At the same time, it will not affect the water flow, ecology, etc. of the surrounding waters due to the installation of a large number of fixed equipment on the shore. It is conducive to maintaining the natural state of the water ecosystem, and better protects the water environment while realizing the water quality detection function.

[0021] Embodiment 3: Based on Embodiment 2, this embodiment also includes the following contents: like Figure 3 and Figure 6 As shown, a pair of rectangular sliding holes are opened on both sides of the top of the T-shaped plate 2, and a U-shaped sliding plate 15 is slidably inserted inside the pair of rectangular sliding holes, and an extended pin shaft 24 is fixed to the open end of the U-shaped sliding plate 15. The extended pin shaft 24 is inserted through the hinge of the innermost pair of hinged connecting rods 23, and the innermost pair of hinged connecting rods 23 can be driven to expand in an "X" shape through the extended pin shaft 24; A rectangular groove is provided in the middle of the top surface of the floating plate 1, and a servo motor 11 with the output end facing upward is installed in the rectangular groove. A driving shaft 12 is fixedly provided at the motor shaft end of the servo motor 11, a concentrically fixed widened gear 13 is sleeved in the middle of the driving shaft 12, and a concentrically fixed active bevel gear 14 is sleeved at the top end of the driving shaft 12. The motor shaft of the servo motor 11 can drive the driving shaft 12, the widened gear 13, and the active bevel gear 14 to rotate synchronously; A pair of staggered L-shaped racks 16 are respectively meshed on the left and right sides and the front and rear sides of the widening gear 13, and the two pairs of L-shaped racks 16 are stacked up and down, and the outer end of each L-shaped rack 16 is fixedly connected to the inner end of the U-shaped slide plate 15 on the adjacent side. The widening gear 13 can mesh and drive the L-shaped rack 16 and the U-shaped slide plate 15 to slide outward along the rectangular sliding hole on the T-shaped plate 2; The relatively flexible structural arrangement of the L-shaped plate 33 and the floating plate 1 allows the detection depth of the water quality detector 39 to be adjusted according to actual needs. The release length of the cable 37 is controlled by changing the distance between the L-shaped plate 33 and the floating plate 1, thereby adjusting the detection depth. This flexibility enables the entire detection device to better adapt to different water environments. Whether it is a shallow lake or pond, or a relatively deep reservoir or other water area, effective water quality detection can be achieved through appropriate adjustments, thereby improving the versatility and applicability of the device.

[0022] Embodiment 4: Based on Embodiment 3, this embodiment also includes the following contents: like Figure 7 and Figure 8 As shown, four vertical plates 3 are fixed on the top surface of the floating plate 1 and are evenly distributed around the rectangular groove. A driven shaft 17 is rotatably inserted in the middle of the inner side surface of each vertical plate 3. The inner end of each driven shaft 17 is sleeved with a concentrically fixed driven bevel gear 18. Each driven bevel gear 18 is meshed and connected with the driving bevel gear 14. The driving bevel gear 14 can mesh and drive the driven bevel gear 18 and the driven shaft 17 to rotate. A single ear seat 31 is fixedly provided at the middle and upper part of the inner side of the vertical plate 3, a first L-shaped tube 32 is fixedly provided between the top end of the vertical plate 3 and the single ear seat 31, and a second L-shaped tube 34 is fixedly provided at the top of the outer side of the L-shaped plate 33; A concentrically fixed winding wheel 36 is sleeved on the middle of the driven shaft 17. The end of the cable 37 away from the counterweight 38 is in a U-shaped state, first passing through the second L-shaped tube 34 upwards, then passing through the first L-shaped tube 32 horizontally, and then winding evenly around the winding wheel 36 downwards. When the winding wheel 36 releases the cable 37, the water quality detector 39 can be driven to extend downwards into the water under the action of the counterweight 38. As the L-shaped plate 33 moves further outward from the floating plate 1, the water quality detector 39 can extend deeper into the water, which makes it possible to detect the water quality of water bodies at different depths, rather than just being limited to the surface of the water body or shallower areas; because water bodies may have different physical, chemical and biological properties at different depths, by in-depth detection of water quality at different depths, the water quality status of the entire water body can be more comprehensively and accurately understood, providing a richer data basis for subsequent analysis and decision-making.

[0023] Specifically, the working principle and operation method of the present invention are as follows: Step 1: Place the floating plate 1 on the water surface. Under the driving action of the servo motor 11, the motor shaft of the servo motor 11 drives the driving shaft 12, the widening gear 13, and the active bevel gear 14 to rotate synchronously. The widening gear 13 meshes and drives the L-shaped rack 16 and the U-shaped slide plate 15 to slide outward along the rectangular sliding hole on the T-shaped plate 2. Step 2: First, the innermost pair of hinged connecting rods 23 are driven to expand in an "X" shape by extending the pin shaft 24, and the pair of first connecting rods 22 are driven to close in a "V" shape, and then several pairs of hinged connecting rods 23 are driven to expand in an "X" shape, and then the pair of second connecting rods 28 are driven to close in a "V" shape, and the pair of notched gears 27 are driven to mesh and rotate with each other, thereby driving the second U-shaped seat 25 and the L-shaped plate 33 to translate in a direction away from the first U-shaped seat 21; Step 3: The active bevel gear 14 meshes to drive the driven bevel gear 18, the driven shaft 17, and the winding wheel 36 to rotate. The winding wheel 36 releases the cable 37, and under the action of the counterweight 38, drives the water quality detector 39 to extend downward into the water; Step 4: As the L-shaped plate 33 moves farther away from the buoy 1, the length of the cable 37 released by the winding wheel 36 increases exponentially, so that the water quality detector 39 is inserted deeper into the water, and the surrounding water quality is detected in real time through the water quality detector 39, and the detection data is transmitted to the background for summary analysis.

[0024] In the present invention, the surrounding water quality is detected in real time by a water quality detector, and the detection data is transmitted to the background for summary analysis in real time, so that when there is a sudden change in water quality, a quick response can be made to reduce adverse effects; the background summarizes and analyzes a large amount of data, which can explore the long-term changes in water quality and provide important guidance for the formulation of water resource management strategies, water body protection and governance plan planning.

[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An environmental water sample detection device, characterized in that: It comprises a floating plate (1), wherein four evenly distributed T-shaped plates (2) are fixedly provided on the outer edge of the top surface of the floating plate (1), a first U-shaped seat (21) is fixedly provided in the middle of the outer side surface of each T-shaped plate (2), a second U-shaped seat (25) is provided on the outer side of each first U-shaped seat (21), and each first U-shaped seat (21) is connected to the second U-shaped seat (25) on the adjacent side via a connecting rod mechanism; An L-shaped plate (33) is fixedly provided on the outer side surface of each second U-shaped seat (25), a semicircular clamping ring (35) is fixedly provided on the bottom of the outer side surface of each L-shaped plate (33), a cable (37) is slidably inserted inside each semicircular clamping ring (35), a counterweight (38) is fixedly provided on the bottom end of each cable (37), and a water quality detector (39) is installed on the bottom end of each counterweight (38).

2. An environmental water sample detection device according to claim 1, characterized in that: A pair of linkage shafts (26) are rotatably inserted in the opening of the second U-shaped seat (25), a concentrically fixed notched gear (27) is sleeved on the middle of each linkage shaft (26), and the pair of notched gears (27) are meshingly connected, and a second connecting rod (28) is fixedly provided in the notched portion of each notched gear (27).

3. An environmental water sample detection device according to claim 2, characterized in that: The connecting rod mechanism comprises a first connecting rod (22), a second connecting rod (28), and an articulated connecting rod (23); a pair of first connecting rods (22) articulated and distributed in a "V" shape are provided in the opening of the first U-shaped seat (21); and a plurality of pairs of articulated connecting rods (23) articulated and distributed in an "X" shape are provided between the pair of first connecting rods (22) and the pair of second connecting rods (28); The outer ends of a pair of the first connecting rods (22) are movably hinged to an adjacent pair of hinged connecting rods (23), the inner ends of a pair of the second connecting rods (28) are movably hinged to an adjacent pair of hinged connecting rods (23), and the two adjacent pairs of hinged connecting rods (23) are movably hinged to each other.

4. The environmental water sample detection device according to claim 3, characterized in that: A pair of rectangular sliding holes are provided on both sides of the top of the T-shaped plate (2), and a U-shaped sliding plate (15) is slidably inserted into the interior of the pair of rectangular sliding holes. An extended pin shaft (24) is fixed to the open end of the U-shaped sliding plate (15), and the extended pin shaft (24) is inserted through the hinge of the innermost pair of hinged connecting rods (23).

5. The environmental water sample detection device according to claim 4, characterized in that: A rectangular groove is provided in the middle of the top surface of the floating plate (1), a servo motor (11) with its output end facing upward is installed in the rectangular groove, a drive shaft (12) is fixedly provided at the end of the motor shaft of the servo motor (11), a concentrically fixed widened gear (13) is sleeved in the middle of the drive shaft (12), and a concentrically fixed active bevel gear (14) is sleeved at the top end of the drive shaft (12).

6. An environmental water sample detection device according to claim 5, characterized in that: The widening gear (13) is respectively meshed with a pair of staggered L-shaped racks (16) on the left and right sides and the front and rear sides, and the two pairs of L-shaped racks (16) are stacked up and down, and the outer end of each L-shaped rack (16) is fixedly connected to the inner end of the U-shaped slide plate (15) on the adjacent side.

7. An environmental water sample detection device according to claim 6, characterized in that: Four vertical plates (3) are fixedly arranged on the top surface of the floating plate (1) and are evenly distributed around the rectangular groove. A driven shaft (17) is rotatably inserted in the middle of the inner side surface of each vertical plate (3). The inner end of each driven shaft (17) is sleeved with a concentrically fixed driven bevel gear (18). Each driven bevel gear (18) is meshedly connected to the driving bevel gear (14).

8. An environmental water sample detection device according to claim 7, characterized in that: A single ear seat (31) is fixedly provided at the middle and upper part of the inner side surface of the vertical plate (3), a first L-shaped tube (32) is fixedly provided between the top end of the vertical plate (3) and the single ear seat (31) and is distributed through the vertical plate (3), and a second L-shaped tube (34) is fixedly provided at the top of the outer side surface of the L-shaped plate (33).

9. The environmental water sample detection device according to claim 8, characterized in that: A concentrically fixed wire reel (36) is sleeved on the middle of the driven shaft (17), and one end of the cable (37) away from the counterweight (38) is in a U-shaped state, first passing through the second L-shaped tube (34) upwards, then passing through the first L-shaped tube (32) horizontally, and then winding evenly around the wire reel (36) downwards.

10. The detection method of the environmental water sample detection device according to claim 9, characterized in that: The following steps are involved: Step 1: Place the floating plate (1) on the water surface. Under the driving action of the servo motor (11), the motor shaft of the servo motor (11) drives the driving shaft (12), the widening gear (13), and the active bevel gear (14) to rotate synchronously. The widening gear (13) meshes and drives the L-shaped rack (16) and the U-shaped slide plate (15) to slide outward along the rectangular sliding hole on the T-shaped plate (2). Step 2: First, the innermost pair of hinged connecting rods (23) are driven to expand in an "X" shape by extending the pin shaft (24), and the pair of first connecting rods (22) are driven to close in a "V" shape, and then the plurality of pairs of hinged connecting rods (23) are driven to expand in an "X" shape, and then the pair of second connecting rods (28) are driven to close in a "V" shape, and the pair of notched gears (27) are driven to mesh and rotate with each other, thereby driving the second U-shaped seat (25) and the L-shaped plate (33) to translate in a direction away from the first U-shaped seat (21); Step 3: The active bevel gear (14) meshes to drive the driven bevel gear (18), the driven shaft (17), and the winding clamp wheel (36) to rotate, and the winding clamp wheel (36) releases the cable (37), and under the action of the counterweight (38), drives the water quality detector (39) to extend downward into the water; Step 4: As the L-shaped plate (33) moves farther away from the floating plate (1), the length of the cable (37) released by the winding wheel (36) increases exponentially, so that the water quality detector (39) is inserted deeper into the water, and the surrounding water quality is detected in real time through the water quality detector (39), and the detection data is transmitted to the background for summary analysis.

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