Sand content detection device for water conservancy and hydrology

Abstract

The invention discloses a water conservancy and hydrology sand content detection device, and relates to the technical field of water sand content detection, the water conservancy and hydrology sand content detection device comprises a directional floating plate, a connecting rod and a detection platform, the middle of the top of the detection platform is provided with a chain box, and the bottom of the detection platform is provided with a sand content detection probe. By arranging the directional floating plate, the direction of the sand content detection probe can be well adjusted, follow-up water flow can conveniently pass through the interior of the detection groove, by arranging the sliding ring, the platform can be conveniently adjusted to slide on the connecting rod, and the elongation of the telescopic rod is controlled according to the speed of water flow in a river, so that the device is stably kept horizontal in the river; by arranging the protective cover, the protective cover can move downwards to be arranged outside the detection groove in a sleeving mode, the ultrasonic transmitter and the ultrasonic receiver are prevented from being damaged when not used, the directions of the ultrasonic transmitter and the ultrasonic receiver are adjusted when the ultrasonic transmitter and the ultrasonic receiver are used, the working state is changed, and the purpose of automatically adjusting the working state is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of water sediment content detection, in particular to a water conservancy and hydrology sediment content detection device. Background Art

[0002] Water conservancy and hydrology generally refers to the hydrological and water conservancy industry. River sediment content is one of the important hydrological parameters. River sediment content monitoring is of great significance for projects such as soil erosion control, water resources development and utilization, and hydrological forecasting. It is necessary to regularly detect the sediment content in the water flow. At present, the measurement methods of sediment content are mainly divided into two categories: instrument measurement method and physical measurement method. The instrument measurement method is divided into drying method and specific gravity method. Although it has high accuracy, it is time-consuming and labor-intensive, and it is also troublesome to take samples for measurement, and its real-time performance is not good. The research on physical sand measurement method is mostly focused on acoustic wave and photoelectric measurement. Photoelectric sand measuring instruments are limited in use under high sand content and are expensive. They also need to be calibrated regularly. Therefore, acoustic detection has become a vital detection method.

[0003] Ultrasonic sand meters use ultrasonic waves to propagate through water, where they scatter and attenuate upon encountering sediment particles. The degree of attenuation is related to the sediment content, and the sediment content is determined by measuring the attenuation of the ultrasound. Simply place an ultrasonic transducer in the water sample, transmit and receive ultrasonic signals, and the instrument calculates the sediment content based on the signal attenuation. However, due to the high flow rate in rivers, sediment content testing requires surveyors to stand on a bridge and manually lower the ultrasonic transducer into the water using a long joystick. While this method can obtain sediment content data, it poses significant safety risks when conducting manual testing during flood season. Furthermore, sediment content measurement is closely related to river depth: the water flow is slow near the riverbed, while it flows too fast near the surface. Only measurements at 0.2-0.6 times the water depth below the water surface can better reflect the river's average sediment content. However, manual placement of the ultrasonic transducer in the water using the joystick cannot be accurately determined, resulting in significant errors in the measurement results. Summary of the Invention

[0004] (1) Technical problems solved In response to the shortcomings of the existing technology, the present invention provides a water conservancy and hydrological sediment content detection device, which has the advantages of being able to automatically adjust the probe immersion depth according to the river water depth and automatically adjust the level of the device without human assistance, thereby solving the problems raised in the background technology.

[0005] (2) Technical solution In order to achieve the above-mentioned purpose of being able to automatically adjust the probe immersion depth according to the river water depth and automatically adjust the level of the device without human assistance, the present invention provides the following technical solutions: a water conservancy and hydrological sediment content detection device, comprising a directional float, a connecting rod, and a detection platform, the left and right sides of the directional float are connected to the left and right sides of the detection platform by two connecting rods, the middle parts of the two connecting rods are slidably connected to two sliding rings, and the sliding rings are connected to each other by an adjustment platform, a sealing box is provided in the middle of the top of the adjustment platform, a chain box is provided in the middle of the top of the detection platform, and a sediment content detection probe is provided at the bottom of the detection platform; There are two symmetrical winding grooves inside the chain box, and a meshing chain is set inside the winding groove. The movable end of the meshing chain passes through the detection platform downward and is connected to the top of the sand content detection probe. A gear box is set on the top side of the chain box. Two mutually meshing gears are symmetrically set inside the gear box. The two gears are connected to two driving sprockets through two rotating shafts. The driving sprockets drive the two meshing chains to move respectively; The outside of the sand content detection probe is sleeved with a protective cover, and two driving racks are provided on the left and right sides of the inner wall of the protective cover. A detection groove is provided at the bottom of the sand content detection probe to facilitate water flow, and adjustment grooves are provided on the left and right side walls of the detection groove. The interior of the adjustment groove is connected to a rotating column through a bearing, and an ultrasonic transmitter and an ultrasonic receiver are respectively provided in the middle of the two rotating columns. A half-toothed ring is provided on the middle side wall of the rotating column, and an engaging tooth groove with a bottom seal is provided on the side wall of the adjusting groove. An intermediate gear connecting the half-toothed ring and the driving rack is provided through a bearing on the inner wall of the engaging tooth groove.

[0006] Preferably, a transceiver motor is installed on the outer wall of the gear box, the output shaft of the transceiver motor is inserted into the interior of the gear box to drive the two gears to rotate, and the transceiver motor is electrically connected to the controller inside the sealing box through a wire.

[0007] Preferably, a float is provided on the top of the outer wall of the protective cover, and sliding bars are provided on the left and right sides of the inner wall of the protective cover. The bottom of the sliding bar is connected to the bottom of the driving rack up and down. Two sliding grooves are provided on the left and right sides of the outer wall of the sand content detection probe, and a top magnet is provided on the top of the sliding groove. A bottom magnet that is attracted to the top magnet is provided on the top of the sliding bar.

[0008] Preferably, the bottom of the directional float is configured to be arc-shaped and hydrophobic, so that the directional float can be lifted upward by the power of the water flow. Floating blocks are provided on both sides of the bottom of the detection platform to prevent the detection platform from sinking into the water by utilizing the buoyancy of the floating blocks.

[0009] Preferably, a mounting bracket is installed in the middle of the top of the adjustment platform by bolts, a telescopic rod is provided on the rear side of the mounting bracket, the movable end of the telescopic rod is fixedly connected to the middle of the front side of the directional float, and a controller for controlling the extension and retraction of the telescopic rod and a gyroscope for detecting the level of the sealing box are provided inside the sealing box.

[0010] Preferably, the top of the sealing box is connected to a cable through a sealing sleeve, and the other end of the cable is connected to the detection box. The ultrasonic transmitter sends a sound wave signal through the cable, and the signal received by the ultrasonic receiver is transmitted to the detection box. The detection box amplifies the signal and displays the data on the screen.

[0011] Preferably, a rope pulling plate is provided on the side of the middle portion of the adjustment platform, a cable is fixedly connected to the rope pulling plate, and the end of the cable is tied to the detection platform.

[0012] Compared with the prior art, the present invention provides a water conservancy and hydrological sediment content detection device, which has the following beneficial effects: 1. The water conservancy and hydrological sediment content detection device is equipped with a directional float, which can automatically adjust the directional float to the rear of the device according to the flow direction of the water flow, thereby adjusting the direction of the sediment content detection probe to facilitate subsequent water flow through the detection tank.

[0013] 2. The water conservancy and hydrological sediment content detection device is configured with a sliding ring to facilitate the adjustment of the platform sliding on the connecting rod. The gyroscope provided inside the sealing box can always detect the horizontal state of the sealing box. When the device is lowered by a cable, the two connecting rods can be kept in a horizontal state. After the device contacts the water surface, the extension of the telescopic rod can also be controlled according to the speed of the water flow in the river, so that the device can remain stably horizontal in the river.

[0014] 3. The water conservancy and hydrological sediment content detection device is equipped with a rotating column to rotate the ultrasonic transmitter and the ultrasonic receiver. When it is necessary to measure the river depth, the ultrasonic transmitter and the ultrasonic receiver can be directed toward the riverbed. When it is necessary to detect the sediment content, the ultrasonic transmitter and the ultrasonic receiver can be rotated 90 degrees to face each other, thereby achieving the purpose of performing multiple tests with a set of ultrasonic devices.

[0015] 4. The water conservancy and hydrological sediment content detection device is equipped with a protective cover. When the sediment content detection probe is retracted to the bottom of the detection platform, the protective cover can be moved downward to cover the outside of the detection tank to prevent the ultrasonic transmitter and ultrasonic receiver from being damaged when not in use. When in use, the direction of the ultrasonic transmitter and ultrasonic receiver can be adjusted by moving the protective cover up and down, thereby changing the working state of the ultrasonic transmitter and ultrasonic receiver, thereby achieving the purpose of automatically adjusting the working state. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main three-dimensional structure of the present invention; Figure 2 This is a bottom-up perspective structural diagram of the present invention; Figure 3 For the present invention Figure 1 Schematic diagram of the structure at A in the middle; Figure 4 This is a schematic diagram of the internal three-dimensional structure of the chain box of the present invention; Figure 5 This is a schematic diagram of the main cross-sectional structure of the sand content detection probe of the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the adjustment platform of the present invention.

[0017] In the figure: 1. Directional float; 2. Connecting rod; 3. Sliding ring; 4. Chain box; 5. Floating block; 6. Float; 7. Detection platform; 8. Gear box; 9. Receiving and discharging motor; 10. Cable; 11. Cable; 12. Telescopic rod; 13. Sand content detection probe; 14. Detection slot; 15. Rotating column; 16. Ultrasonic transmitter; 17. Ultrasonic receiver; 18. Half-tooth ring; 19. Drive rack; 20. Engaging tooth groove; 21. Protective cover; 22. Adjusting groove; 23. Engaging chain; 24. Drive sprocket; 25. Top magnet; 26. Bottom magnet; 27. Intermediate gear; 28. Sliding groove; 29. Adjustment platform; 30. Mounting frame; 31. Sealing box; 32. Rope pull plate. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] For an embodiment of the present invention, please refer to Figures 1 to 6 , including a directional floating plate 1, a connecting rod 2, and a detection platform 7. The left and right sides of the directional floating plate 1 are connected to the left and right sides of the detection platform 7 through two connecting rods 2. The middle parts of the two connecting rods 2 are slidably connected to two sliding rings 3. The sliding rings 3 are connected to each other through an adjustment platform 29. A sealing box 31 is provided in the middle of the top of the adjustment platform 29. A chain box 4 is provided in the middle of the top of the detection platform 7. A sand content detection probe 13 is provided at the bottom of the detection platform 7; After the device is placed in the water flow, the directional float 1 is lighter and more easily washed away by the water flow, so the device can adjust its direction in the water flow, and the sediment content detection probe 13 can also be adjusted in the right direction, making it easier to detect the sediment content in the river.

[0020] like Figure 1 and Figure 4 As shown, the chain box 4 has two symmetrical roll grooves, and the roll grooves are provided with meshing chains 23. When the meshing chains 23 move, they are stored in the roll grooves. The movable ends of the meshing chains 23 pass through the detection platform 7 downward and are connected to the top of the sand content detection probe 13. When the meshing chains 23 move, they drive the sand content detection probe 13 to move up and down. A gear box 8 is provided on one side of the top of the chain box 4. Two mutually meshing gears are symmetrically provided inside the gear box 8. The two gears are connected to two driving sprockets 24 through two rotating shafts. The driving sprockets 24 respectively drive the two meshing chains 23 to move. By rotating the gears inside the gear box 8, the two driving sprockets 24 can rotate simultaneously, thereby moving the meshing chains 23 on both sides at the same time. By controlling the retraction and extension of the meshing chains 23, the purpose of retracting and extending the sand content detection probe 13 is achieved.

[0021] like Figure 2-Figure 5 As shown, the outside of the sediment detection probe 13 is sleeved with a protective cover 21, and two driving racks 19 are provided on the left and right sides of the inner wall of the protective cover 21. A detection groove 14 is provided at the bottom of the sediment detection probe 13 to facilitate water flow, and an adjustment groove 22 is provided on the left and right side walls of the detection groove 14. The interior of the adjustment groove 22 is connected to a rotating column 15 through a bearing, and an ultrasonic transmitter 16 and an ultrasonic receiver 17 are respectively provided in the middle of the two rotating columns 15. When the riverbed depth is detected, the ultrasonic transmitter 16 and the ultrasonic receiver 17 are facing the riverbed. A half-toothed ring 18 is provided on the middle side wall of the rotating column 15, and a meshing tooth groove 20 with a bottom seal is provided on the side wall of the adjustment groove 22. The inner wall of the meshing tooth groove 20 is provided with an intermediate gear 27 connecting the half-toothed ring 18 and the driving rack 19 through a bearing.

[0022] When the meshing chain 23 is completely retracted into the chain box 4, the sediment detection probe 13 is also retracted to a position close to the bottom of the detection platform 7. At this time, the protective cover 21 is completely sheathed on the outside of the sediment detection probe 13 to protect the ultrasonic transmitter 16 and the ultrasonic receiver 17. In this state, the ultrasonic transmitter 16 and the ultrasonic receiver 17 are both facing downward, which is also the working state of the device for detecting the water depth of the river. When the device is placed in the water and the meshing chain 23 is released to make the sediment detection probe 13 penetrate into the water, the protective cover 21 is moved upward by the buoyancy of the float 6. When the protective cover 21 reaches the top, the ultrasonic transmitter 16 and the ultrasonic receiver 17 are opposite to each other. At this time, the sediment content in the river is detected by the signal emitted by the ultrasonic transmitter 16 and the sound wave signal received by the ultrasonic receiver 17. like Figure 1 and Figure 6 As shown, a transceiver motor 9 is installed on the outer wall of the gear box 8. The output shaft of the transceiver motor 9 is inserted into the interior of the gear box 8 to drive the two gears to rotate. The transceiver motor 9 is electrically connected to the controller inside the sealing box 31 through a wire.

[0023] After the ultrasonic transmitter 16 and the ultrasonic receiver 17 detect the depth of the river water, the controller controls the number of revolutions of the transmitting and receiving motor 9, so that the two gears inside the gear box 8 rotate simultaneously, driving the two driving sprockets 24 to rotate synchronously, thereby controlling the release amount of the meshing chain 23 and placing the sediment content detection probe 13 at a suitable water depth.

[0024] like Figure 2-Figure 5 As shown, a float 6 is provided on the top of the outer wall of the protective cover 21, and sliding bars are provided on the left and right sides of the inner wall of the protective cover 21. The bottom of the sliding bar is connected to the bottom of the driving rack 19 up and down. Two sliding grooves 28 are provided on the left and right sides of the outer wall of the sand content detection probe 13. A top magnet 25 is provided on the top of the sliding groove 28, and a bottom magnet 26 that is attracted to the top magnet 25 is provided on the top of the sliding bar.

[0025] When the sand content detection probe 13 is lowered, the protective cover 21 moves upward outside the sand content detection probe 13 under the action of the float 6, and slides inside the sliding groove 28 through the sliding bar, so that the driving rack 19 and the intermediate gear 27 are stably engaged, thereby driving the two rotating columns 15 to rotate synchronously. When the sliding bar moves to the top of the sliding groove 28, the top magnet 25 and the bottom magnet 26 attract each other to stabilize the position of the protective cover 21, preventing the angle of the ultrasonic transmitter 16 and the ultrasonic receiver 17 from changing, thereby ensuring that the ultrasonic transmitter 16 and the ultrasonic receiver 17 can stably look at each other.

[0026] like Figure 2As shown, the bottom of the directional float 1 is arranged in an arc-shaped hydrophobic shape, which facilitates lifting the directional float 1 upward by the power of the water flow. Floating blocks 5 are provided on both sides of the bottom of the detection platform 7, and the buoyancy of the floating blocks 5 is used to prevent the detection platform 7 from sinking into the water.

[0027] By setting the bottom of the directional float 1 to be hydrophobic, it is possible to facilitate the flow of water through the bottom of the directional float 1. At the same time, the force of the water flow impacting the directional float 1 can be used to swing the directional float 1 to the rear of the device, making it easier to adjust the direction of the sand content detection probe 13 so that the water flow can better pass through the detection groove 14.

[0028] like Figure 6 As shown, a mounting bracket 30 is bolted to the top center of the adjustment platform 29. A telescopic rod 12 is mounted on the rear side of the mounting bracket 30. The movable end of the telescopic rod 12 is fixedly connected to the center of the front side of the directional float 1. A sealed box 31 houses a controller for controlling the extension and retraction of the telescopic rod 12 and a gyroscope for detecting the level of the sealed box 31. A pull rope plate 32 is mounted on the side center of the adjustment platform 29. A cable 10 is fixedly connected to the pull rope plate 32, and the end of the cable 10 is tied to the platform.

[0029] After the device is placed in the river, due to the different flow rates of water in different rivers, the cable 10 needs to be tilted upward to provide different amounts of traction. In rivers with lower flow rates, due to the smaller impact force of the river, the traction force of the cable 10 tilted upward is very small, and most of the gravity of the device is offset by the buoyancy provided by the directional float 1 and the float block 5, and the device is submerged further below the water surface. At this time, the telescopic rod 12 is longer, and the adjustment platform 29 is closer to the detection platform 7. When the water flow is larger, the upward traction force of the cable 10 is very large, and a large part of the gravity of the device is offset by the traction force of the cable 10. The position where the cable 10 is pulled is closer to the center of gravity of the device. Therefore, the horizontal degree is detected by the gyroscope, and the extension and contraction amount of the telescopic rod 12 is controlled by the controller to adjust the distance between the traction point of the cable 10 and the center of gravity of the device, so that the device can remain horizontal in water flows with different flow rates, thereby facilitating the downward extension of the sand content detection probe 13 to detect the sand content in the water flow.

[0030] like Figure 6 As shown, the top of the sealing box 31 is connected to a cable 11 through a sealing sleeve, and the other end of the cable 11 is connected to the detection box. The ultrasonic transmitter 16 sends a sound wave signal through the cable 11, and at the same time, the signal received by the ultrasonic receiver 17 is transmitted to the detection box, and the detection box amplifies the signal and displays the data on the screen.

[0031] Signals are exchanged between the detection box and the controller inside the sealing box 31 through the cable 11, so that the depth of the water flow is detected by the sand content detection probe 13 and displayed on the screen inside the detection box. After the sand content detection probe 13 is controlled to descend to a suitable depth, the detected data can also be sent to the detection box through the cable 11, so that the detected data can be displayed on the display screen.

[0032] The specific steps and principles of this device are as follows: First, the inspector lowers the device from a platform or bridge using a cable 10. After the bottom of the directional float 1 touches the water surface, the directional float 1 can be turned to the rear side, where the bottom is more susceptible to the impact of the water flow, so that the sediment content detection probe 13 is located on the water-facing side. The cable 11 is then electrically connected to the detection box, and the inspector ties the cable 10 to the guardrail. When the water flow is small, due to the small impact of the river, the upward traction force of the cable 10 is very small, and most of the gravity of the device is offset by the buoyancy provided by the directional float 1 and the floating block 5. The device is submerged further below the water surface. At this time, the telescopic rod 12 is longer, and the adjustment platform 29 is closer to the detection platform 7. When the water flow is large, the upward traction force of the cable 10 is very large, and a large part of the gravity of the device is offset by the traction force of the cable 10. The position where the cable 10 is pulled is closer to the center of gravity of the device. Therefore, the horizontal degree is detected by the gyroscope, and the extension and contraction amount of the telescopic rod 12 is controlled by the controller, thereby adjusting the distance between the traction point of the cable 10 and the center of gravity of the device, so that the device can be kept horizontal in water flows with different flow rates, thereby facilitating the downward extension of the sediment content detection probe 13 to detect the sediment content in the water flow; At this time, since the sediment content detection probe 13 and the bottom of the detection platform 7 are in close contact, the ultrasonic transmitter 16 and the ultrasonic receiver 17 are both facing downward. By controlling the ultrasonic transmitter 16 to emit sound waves, the ultrasonic receiver 17 receives the sound wave signal and transmits the data to the detection box, the depth of the river can be detected, thereby determining the appropriate detection position, thereby controlling the transceiver motor 9 to rotate an appropriate number of circles, so that the two gears inside the gear box 8 rotate simultaneously, driving the two drive sprockets 24 to rotate synchronously, thereby controlling the release amount of the meshing chain 23 and placing the sediment content detection probe 13 at a suitable water depth. When the sand content detection probe 13 is lowered, the protective cover 21 moves upward outside the sand content detection probe 13 under the action of the float 6, and slides inside the sliding groove 28 through the sliding bar, so that the driving rack 19 and the intermediate gear 27 are stably engaged, thereby driving the two rotating columns 15 to rotate synchronously. When the sliding bar moves to the top of the sliding groove 28, the top magnet 25 and the bottom magnet 26 attract each other to stabilize the position of the protective cover 21, preventing the angle of the ultrasonic transmitter 16 and the ultrasonic receiver 17 from changing, thereby ensuring that the ultrasonic transmitter 16 and the ultrasonic receiver 17 can stably see each other. After the sediment content detection probe 13 is at a suitable position in the river, the ultrasonic transmitter 16 sends a sound wave signal, the ultrasonic receiver 17 receives the sound wave signal, and the degree of sound wave attenuation is displayed on the display screen, thereby detecting the sediment content in the river; When the device is finally retracted, the engaging chain 23 is retracted by the retracting motor 9. After the top of the protective cover 21 is against the bottom of the detection platform 7, the protective cover 21 assembly is downwardly sleeved on the outside of the sand content detection probe 13 until the top of the sand content detection probe 13 is tightly pressed against the detection platform 7, and the protective cover 21 is used to protect the sand content detection probe 13.

[0033] The above description is only a preferred specific embodiment of the present invention. Although the embodiments of the present invention have been shown and described, it can be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents. The protection scope of the present invention is not limited to the above embodiments. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, can make equivalent substitutions or changes based on the technical solutions and inventive concepts of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A water conservancy and hydrological sediment content detection device, comprising a directional floating plate (1), a connecting rod (2), and a detection platform (7), characterized in that: The left and right sides of the directional floating plate (1) are connected to the left and right sides of the detection platform (7) through two connecting rods (2), the middle parts of the two connecting rods (2) are slidably connected to two sliding rings (3), and the sliding rings (3) are connected to each other through an adjustment platform (29). A sealing box (31) is provided in the middle of the top of the adjustment platform (29), a chain box (4) is provided in the middle of the top of the detection platform (7), and a sand content detection probe (13) is provided at the bottom of the detection platform (7); The chain box (4) has two symmetrical roll grooves formed therein, and a meshing chain (23) is provided inside the roll groove. The movable end of the meshing chain (23) passes through the detection platform (7) downward and is connected to the top of the sand content detection probe (13). A gear box (8) is provided on one side of the top of the chain box (4). Two mutually meshing gears are symmetrically provided inside the gear box (8). The two gears are connected to two driving sprockets (24) via two rotating shafts. The driving sprockets (24) respectively drive the two meshing chains (23) to move. The sand content detection probe (13) is sleeved with a protective cover (21) on the outside, and two driving racks (19) are provided on the left and right sides of the inner wall of the protective cover (21). The bottom of the sand content detection probe (13) is provided with a detection groove (14) for facilitating water flow, and the left and right side walls of the detection groove (14) are provided with an adjustment groove (22). The inside of the adjustment groove (22) is connected to a rotating column (15) through a bearing, and an ultrasonic transmitter (16) and an ultrasonic receiver (17) are provided in the middle of the two rotating columns (15), respectively. A half-toothed ring (18) is provided on the middle side wall of the rotating column (15), and a meshing tooth groove (20) with a bottom seal is provided on the side wall of the adjustment groove (22). An intermediate gear (27) connecting the half-toothed ring (18) and the driving rack (19) is provided on the inner wall of the meshing tooth groove (20) through a bearing.

2. A water conservancy and hydrological sediment content detection device according to claim 1, characterized in that: The outer wall of the gear box (8) is installed with a transceiver motor (9), the output shaft of which is inserted into the interior of the gear box (8) to drive the two gears to rotate, and the transceiver motor (9) is electrically connected to the controller inside the sealing box (31) through a wire.

3. The water conservancy and hydrological sediment content detection device according to claim 1, characterized in that: A float (6) is provided on the top of the outer wall of the protective cover (21), and sliding bars are provided on both the left and right sides of the inner wall of the protective cover (21), the bottom of the sliding bar is connected to the bottom of the driving rack (19) in an integral manner, and two sliding grooves (28) are provided on the left and right sides of the outer wall of the sand content detection probe (13), and a top magnet (25) is provided on the top of the sliding groove (28), and a bottom magnet (26) is provided on the top of the sliding bar to be attracted to the top magnet (25).

4. The water conservancy and hydrological sediment content detection device according to claim 1, characterized in that: The bottom of the directional float (1) is configured to be hydrophobic and arc-shaped, so that the directional float (1) can be lifted upward by the power of the water flow. Floating blocks (5) are provided on both left and right sides of the bottom of the detection platform (7), and the buoyancy of the floating blocks (5) is utilized to prevent the detection platform (7) from sinking into the water.

5. The water conservancy and hydrological sediment content detection device according to claim 1, characterized in that: A mounting frame (30) is mounted on the middle of the top of the adjustment platform (29) via bolts. A telescopic rod (12) is provided on the rear side of the mounting frame (30). The movable end of the telescopic rod (12) is fixedly connected to the middle of the front side of the directional floating plate (1). A controller for controlling the telescopic movement of the telescopic rod (12) and a gyroscope for detecting the horizontality of the sealing box (31) are provided inside the sealing box (31).

6. The water conservancy and hydrological sediment content detection device according to claim 1, characterized in that: The top of the sealing box (31) is connected to a cable (11) through a sealing sleeve, and the other end of the cable (11) is connected to a detection box. The ultrasonic transmitter (16) sends a sound wave signal through the cable (11), and at the same time, the signal received by the ultrasonic receiver (17) is transmitted to the detection box, and the detection box amplifies the signal and displays the data on the screen.

7. The water conservancy and hydrological sediment content detection device according to claim 1, characterized in that: A rope pulling plate (32) is provided on the side of the middle portion of the adjustment platform (29), a cable (10) is fixedly connected to the rope pulling plate (32), and an end of the cable (10) is tied to the detection platform.

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