A device for detecting the thickness of river channel silt

Abstract

The present application relates to a device for detecting the thickness of river channel silt, and relates to the field of silt thickness detection, which includes a detection box, a detection component, a propping component and a fixing component. The detection boxes are provided in multiples along the length and width directions of the river channel, the detection components are provided in multiple groups and correspond one to one with the detection boxes, the detection components are used to measure the thickness of the river channel silt, the propping component includes a telescopic rod and an air pump, the telescopic rod is hollow inside and is provided with multiple telescopic rods, the multiple telescopic rods are respectively provided between two adjacent detection boxes, the number of telescopic rods between two adjacent detection boxes is more than two and is an even number, the more than two telescopic rods are symmetrically connected to the two adjacent detection boxes, and one end close to each other is fixedly connected, the air pump is connected to the multiple detection boxes through a pipeline, and the fixing component is used to fix the detection box to the river channel. The present application has the effect of facilitating multi-point detection of the thickness of river channel silt at the same time.

Description

Technical Field

[0001] This application relates to the field of sludge thickness detection, and particularly to a device for detecting the thickness of river channel sludge. Background Art

[0002] River channel sludge mainly refers to the sediment deposited at the bottom of the river channel. The large amount of sediment deposition in the river channel is likely to cause the problem of river channel blockage. Therefore, it is necessary to detect and clean the river channel sludge.

[0003] Currently, the thickness detection of river channel sludge is usually carried out by the difference between the hardness of the sludge and the hardness of the river bottom. The detection head with a pressure sensor is fixed on the telescopic measuring ruler, and the pressure sensor is inserted into the river water through the telescopic measuring ruler until the detection head reaches the sludge layer. The pressure value of the pressure sensor on the detection head changes. Then, the detection head is further inserted through the telescopic measuring ruler until the pressure value of the pressure sensor changes again, so as to measure the thickness of the river channel sludge. Furthermore, whether to carry out dredging operations on the river channel is determined by the detected thickness of the river channel sludge.

[0004] Through the telescopic measuring ruler and the detection head, usually only the thickness of the sludge at one place in the river channel can be detected, so it is difficult to detect the sludge at multiple points in the river channel simultaneously. Summary of the Invention

[0005] In order to facilitate the multi-point detection of the thickness of river channel sludge, this application provides a device for detecting the thickness of river channel sludge.

[0006] A device for detecting the thickness of river channel sludge provided by this application adopts the following technical scheme:

[0007] A device for detecting the thickness of river channel sludge includes:

[0008] Detection boxes, a plurality of which are arranged along both the length direction and the width direction of the river channel;

[0009] Detection components, a plurality of groups of which are provided and correspond to the detection boxes one by one. The detection components are arranged on the detection boxes and are used for measuring the thickness of the river channel sludge;

[0010] Expanding components, which include telescopic rods and air pumps;

[0011] The telescopic rods, the interiors of which are hollow and a plurality of which are provided. The plurality of telescopic rods are respectively arranged between two adjacent detection boxes. The number of telescopic rods between two adjacent detection boxes is two or more and is an even number. Two or more of the telescopic rods are symmetrically connected to two adjacent detection boxes and are fixedly connected at the ends close to each other;

[0012] The air pump is connected to the plurality of detection boxes through pipelines;

[0013] A fixing component, wherein the fixing component is provided in multiple groups and corresponds one-to-one with the detection boxes on both sides of the length direction of the river channel. The fixing component is arranged on the river channel and connected to the detection box. The fixing component is used to fix the detection box to the river channel.

[0014] By adopting the above technical scheme, multiple detection boxes are connected by telescopic rods, gas is filled into the detection boxes by an air pump, the gas in the detection boxes is passed into the hollow telescopic rod, and the telescopic rod is extended by air pressure, so that multiple detection boxes are expanded into a net shape by the telescopic rod, and multiple detection boxes are fixed on the river channel by fixing components, and then the thickness of the river channel silt is measured by multiple detection components, thereby realizing multi-point measurement of the river channel silt thickness at the same time, making it easy to detect the river channel silt thickness at the same time, and improving the accuracy of river channel silt detection. At the same time, multiple detection boxes are pneumatically expanded, so that the expansion of the detection boxes is convenient and quick.

[0015] Optionally, the detection component includes:

[0016] A telescopic portion, the telescopic portion being arranged on a side of the detection box close to the bottom of the river channel;

[0017] The detection part is arranged on the telescopic part and is used to detect the depth of the river channel silt. The telescopic part is used to drive the detection part to move to the river channel silt.

[0018] By adopting the above technical solution, the detection part is made to reach the river channel silt through the telescopic part, and the detection part directly measures the river channel silt, thereby reducing the influence of the river channel water depth on the silt thickness measurement.

[0019] Optionally, the telescopic part includes a telescopic frame and a touch plate, the telescopic frame is a multi-stage telescopic member, and the fixed end is fixedly connected to the detection box, the touch plate is hinged on the smallest movable end of the telescopic frame, and the detection part is arranged on the touch plate.

[0020] By adopting the above technical solution, the telescopic frame is not easily affected by the buoyancy of the river water, so that the telescopic frame can slide down easily under the action of gravity until the contact plate touches the silt, thereby facilitating the detection part to move to the silt through the multi-stage telescopic frame.

[0021] Optionally, the detection part includes a detection tube and a detection ruler. The detection tube is fixedly arranged on one side of the contact plate close to the telescopic frame. The detection ruler is located inside the detection tube and penetrates through the contact plate. The detection ruler is slidably connected to the contact plate and is perpendicular to the contact plate. The inside of the detection tube is in a sealed state. A motor is fixedly arranged inside the detection ruler at one end far away from the contact plate. A screw rod is arranged inside the detection ruler and is threadedly connected to the screw rod. The screw rod is coaxially and fixedly connected to the output shaft of the motor.

[0022] By adopting the above technical solution, the screw rod is driven to rotate by the motor, and the screw rod drives the detection ruler to move. The detection ruler moves in the silt, so that the detection ruler can move stably in the silt. And because the detection ruler is perpendicular to the contact plate, the detection ruler is convenient to enter the silt vertically along the silt surface, thereby improving the accuracy of the silt thickness detection.

[0023] Optionally, a displacement sensor is fixedly arranged at one end of the detection tube far away from the contact plate. A displacement detection plate is fixedly arranged at one end of the detection ruler located inside the detection tube, and a pressure sensor is fixedly arranged at one end of the detection ruler located outside the detection tube. The displacement sensor and the pressure sensor are both electrically connected to a controller. The displacement sensor and the displacement detection plate are arranged opposite to each other. The displacement sensor is used to measure the displacement value of the movement of the displacement detection plate and output the displacement value to the controller. The pressure sensor is used to measure the pressure value received by the detection ruler and output the pressure value to the controller. The controller is used to record the displacement value when the pressure value suddenly increases.

[0024] By adopting the above technical solution, since the displacement detection plate is fixedly connected to the detection ruler, the displacement sensor directly measures the thickness of the silt by measuring the displacement value of the movement of the displacement detection plate, making the detection of the silt thickness more accurate. At the same time, through the change of the pressure value of the pressure sensor, it is convenient to accurately know whether the detection ruler has moved to the bottom of the river channel, thereby making the measurement of the silt thickness more accurate.

[0025] Optionally, the side wall of the detection tube is in a hollow state, and a plurality of air outlet holes are formed in the outer side wall. A hose is connected between the side wall of the detection tube and the detection box. A one-way air valve is arranged on the hose. The conduction direction of the one-way air valve is from the detection box to the side wall of the detection tube.

[0026] By adopting the above technical solution, after the telescopic rod of the detection box is fully extended or retracted, the air pressure inside the detection box continues to increase until the air pressure causes the one-way air valve to conduct. The gas inside the detection box flows into the side wall of the detection tube and blows out from the air outlet holes on the side wall of the detection tube. Thus, when the detection tube moves in the river water, the continuously blown air on the detection tube facilitates blowing away the obstacles in the river water, making it less likely for the detection tube to be affected by the obstacles in the river water during the process of moving to the silt.

[0027] Optionally, the fixing assembly includes:

[0028] A fixing part, which is connected to the detection box and is used to fix the detection box to the side of the river channel;

[0029] A connecting part, which is arranged between the detection box and the fixing part. The connecting part is used to connect the fixing part and the detection box and is used to adjust the distance between the fixing part and the detection box;

[0030] A clamping part, which is arranged on the detection box and is used to fix the connecting part after the connecting part adjusts the distance between the fixing part and the detection box.

[0031] By adopting the above technical solution, the fixing part is connected to the detection box through a connecting plate. The distance between the fixing part and the detection box is adjusted through the connecting part. The detection box is fixed to the river channel through the fixing part. The connecting part is fixed by the clamping part so that the distance between the fixing part and the detection box is easy to fix after adjustment. Thus, through the cooperation of the fixing part, the connecting part, and the clamping part, the detection box is easy to be fixed to the river channel and the distance from the side of the river channel is easy to adjust.

[0032] Optionally, the fixing part includes a fixing block and a fixing nail. The fixing block is fixedly connected to the fixing nail. The fixing nail is inserted into one side of the river channel, and the fixing block is connected to the detection box.

[0033] By adopting the above technical solution, the fixing nail is inserted into the river channel through the fixing block, making it easy to insert the fixing nail into the river channel, and further making it convenient to fix the detection box to the river channel.

[0034] Optionally, the connecting part includes a reel, a torsion spring, and a steel wire rope. The reel is rotatably arranged on the detection box. The torsion spring is fixedly arranged between the reel and the detection box. One end of the steel wire rope is fixedly connected to the reel and wound around the reel, and the other end is fixedly connected to the fixing block.

[0035] By adopting the above technical solution, the fixing block pulls the steel wire rope, the steel wire rope pulls the reel to rotate, the reel accumulates elastic force in the coil spring, so that the distance between the detection box and the fixing block is easy to adjust, and the steel wire rope is easy to automatically wind up through the coil spring, so that the fixing block and the fixing nail are easy to automatically reset after use.

[0036] Optionally, the clamping part includes a clamping sleeve and a clamping nut. The clamping sleeve is fixedly connected to the detection box and has a plurality of clamping grooves on its side wall. The steel wire rope is threaded through the clamping sleeve and is slidably connected to the clamping sleeve. The clamping nut is sleeved on the clamping sleeve and is threadedly connected to the clamping sleeve.

[0037] By adopting the above technical solution, rotate the clamping nut so that the clamping nut moves to the position where the clamping groove is opened on the clamping sleeve. Through the clamping nut, the clamping sleeve is tightly abutted against the steel wire rope, so that the steel wire rope is easy to be fixed to the clamping sleeve, and the distance between the fixing block and the detection box is easy to be fixed after adjustment.

[0038] In summary, the present application includes at least one of the following beneficial technical effects:

[0039] 1. By connecting a plurality of detection boxes through a plurality of telescopic rods, the detection boxes are easy to be arranged in a net shape on the river channel, so that it is convenient to simultaneously perform multi-point detection on the thickness of the river channel silt;

[0040] 2. The detection ruler is vertically arranged with the contact plate and the contact plate is hinged to the telescopic frame, so that the detection ruler is easy to measure the thickness of the silt perpendicular to the silt surface, improving the accuracy of silt detection;

[0041] 3. By pulling the steel wire rope with the fixing block, the distance between the detection box and the fixing block is easy to adjust, making the detection device easy to adapt to river channels of different widths. Brief Description of the Drawings

[0042] Figure 1 is a schematic structural view of an embodiment of the present application;

[0043] Figure 2 is a schematic structural view for illustrating the fixing component;

[0044] Figure 3 is a schematic structural view for illustrating the detection component;

[0045] Figure 4 is a sectional view of the detection part.

[0046] Description of the Reference Numerals:

[0047] 1. Detection box; 11. Hose; 111. One-way air valve; 2. Detection assembly; 21. Telescopic part; 211. Telescopic frame; 212. Touch plate; 22. Detection part; 221. Detection tube; 2211. Motor; 2212. Displacement sensor; 2213. Air outlet; 222. Detection ruler; 2221. Screw; 2222. Cone head; 2223. Displacement detection plate; 2224. Pressure sensor; 223. Controller; 3. Spreading assembly; 31. Telescopic rod; 32. Air pump; 4. Fixing assembly; 41. Fixing part; 411. Fixing block; 412. Fixing nail; 42. Connecting part; 421. Reel; 422. Coil spring; 423. Wire rope; 43. Clamping part; 431. Clamping sleeve; 4311. Clamping slot; 432. Clamping nut. DETAILED DESCRIPTION

[0048] The following is combined with Figures 1-4 This application is described in further detail.

[0049] The present application embodiment discloses a river channel silt thickness detection device. Figure 1 A river channel silt thickness detection device includes a detection box 1, a detection component 2, a propping component 3 and a fixing component 4. There are multiple detection boxes 1, detection components 2 and fixing components 4. The detection boxes 1 correspond to the detection components 2 one by one. The detection components 2 are used to measure the thickness of the river channel silt. The fixing components 4 correspond to the detection boxes 1 close to both sides of the river channel one by one. The fixing components 4 are used to fix the detection boxes 1 to the sides of the river channel. The propping component 3 is set on multiple detection boxes 1 and is used to prop up multiple detection boxes 1.

[0050] When in use, the expansion component 3 expands multiple detection boxes 1 and arranges multiple detection boxes 1 in a grid on the river channel. The fixing component 4 fixes the detection box 1 to the river channel. The detection component 2 detects the thickness of the river channel silt, so that the detection device can easily perform multi-point detection of the thickness of the river channel silt at the same time.

[0051] Reference Figure 1 The detection box 1 is in a rectangular block shape and is hollow inside. Multiple detection boxes 1 are arranged along the length and width directions of the river channel, and the detection boxes 1 are arranged horizontally.

[0052] The expansion assembly 3 includes a telescopic rod 31 and an air pump 32. There are multiple telescopic rods 31, which are respectively arranged between two adjacent detection boxes 1. The number of telescopic rods 31 between two adjacent detection boxes 1 is two. The two telescopic rods 31 are symmetrically arranged and fixedly connected at one end close to each other. The telescopic rod 31 is hollow inside and is connected to the detection box 1. The length direction of the telescopic rod 31 is perpendicular to the side wall of the detection box 1; the air pump 32 is fixedly arranged on one side of the river channel and is connected to the top ends of multiple detection boxes 1 through pipelines.

[0053] During use, the air pump 32 is started. The air pump 32 pressurizes air and fills it into multiple detection boxes 1 through a pipeline. The pressurized air flows into the hollow telescopic rod 31. Under the action of air pressure, the telescopic rod 31 expands and contracts, so that the multiple detection boxes 1 are arranged in a net shape, facilitating the detection device to simultaneously perform multi-point detection on the thickness of river silt.

[0054] Referring to Figure 2 , the fixing assembly 4 includes a fixing part 41, a connecting part 42 and a clamping part 43. The fixing part 41 includes a fixing block 411 and a fixing nail 412. The fixing block 411 is in a circular block shape and is horizontally arranged. The fixing nail 412 is in a long rod shape. The fixing nail 412 is located below the fixing block 411 and is vertically arranged. The top of the fixing nail 412 is fixedly connected to the fixing block 411, and the connection part is located at the center of the fixing block 411. The fixing nail 412 is tightly inserted on one side of the river channel.

[0055] The connecting part 42 includes a reel 421, a torsion spring 422 and a steel wire rope 423. The reel 421 is rotatably arranged on the side wall of the detection box 1 close to the river channel, and the axis direction is the same as the length direction of the river channel; the torsion spring 422 is fixedly arranged at one end of the axis direction of the reel 421 and is fixedly connected to the detection box 1; one end of the steel wire rope 423 is fixedly connected to the side wall of the reel 421 and is wound around the reel 421, and the other end of the steel wire rope 423 is fixedly connected to the side wall of the fixing block 411 close to the detection box 1.

[0056] The clamping part 43 includes a bushing 431 and a clamping nut 432. The bushing 431 is circular and its inner part is adapted to the steel wire rope 423. The axis direction of the bushing 431 is perpendicular to the side wall of the detection box 1. One end of the bushing 431 close to the detection box 1 is fixedly connected to the detection box 1. The steel wire rope 423 is inserted into the bushing 431 and is slidably connected to the bushing 431.

[0057] A plurality of card slots 4311 are formed in the side wall of the bushing 431 along the axis direction. The card slots 4311 are rectangular and penetrate through the side wall of the bushing 431. The length direction of the card slots 4311 is the same as the axis direction of the bushing 431, and the end of the length direction far from the detection box 1 penetrates through the end of the bushing 431 far from the detection box 1. The clamping nut 432 is sleeved on the bushing 431 and is threadedly connected to the bushing 431. When the clamping nut 432 is located at the position of the card slot 4311 of the bushing 431, the bushing 431 is in close contact with the steel wire rope 423.

[0058] During use, pull the fixed block 411. The fixed block 411 pulls the steel wire rope 423, and the steel wire rope 423 causes the rotating shaft to rotate and accumulates elastic force in the coil spring 422 until the fixed block 411 drives the fixed nail 412 to move to one side of the river channel. Insert the fixed nail 412 into one side of the river channel, and drive the fixed nail 412 into the inside of one side of the river channel by hitting the fixed block 411. Then rotate the clamping nut 432 to make the clamping nut 432 move to the position of the card slot 4311 opened in the card sleeve 431, and fix the card sleeve 431 and the steel wire rope 423 through the clamping nut 432, so that the detection box 1 is easily fixed on the river channel.

[0059] Refer to Figure 3 , the detection component 2 is located below the detection box 1. The detection component 2 includes a telescopic part 21 and a detection part 22. The telescopic part 21 includes a telescopic frame 211 and a contact plate 212. The telescopic frame 211 is a multi-stage telescopic member, and both the fixed end and the multi-stage movable ends are circular rings. The telescopic frame 211 is sleeved step by step from the fixed end to the smallest movable end, and each stage is in a frame shape. The fixed end of the telescopic frame 211 is fixedly connected to the bottom end of the detection box 1.

[0060] The contact plate 212 is in a circular plate shape and is hinged to the smallest movable end of the telescopic frame 211. The hinge position of the contact plate 212 and the telescopic frame 211 is at both ends in the diameter direction of the contact plate 212.

[0061] The detection part 22 includes a detection tube 221 and a detection ruler 222. The detection tube 221 is in a circular tubular shape and is fixedly arranged on one side of the contact plate 212 close to the telescopic frame 211. The detection tube 221 is coaxially arranged with the contact plate 212 and is located inside the smallest movable end of the telescopic frame 211. One end of the detection tube 221 away from the contact plate 212 is sealed and the inside is in a sealed state.

[0062] Refer to Figure 3 and Figure 4 , the detection ruler 222 is in a rectangular strip shape and is inserted through the contact plate 212. The detection ruler 222 is slidably connected to the contact plate 212 and the length direction is perpendicular to the plate surface of the contact plate 212. The detection ruler 222 is located inside the detection tube 221. One end of the detection ruler 222 outside the detection tube 221 is integrally connected with a tapered head 2222. The tapered head 2222 is in a quadrangular pyramid shape and the apex angle faces away from the detection ruler 222.

[0063] Refer to Figure 4 , a motor 2211 is fixedly arranged inside one end of the detection tube 221 away from the contact plate 212. The output shaft of the motor 2211 is coaxially arranged with the detection tube 221. One end of the detection ruler 222 close to the motor 2211 is threadedly penetrated with a screw rod 2221. The axial direction of the screw rod 2221 is the same as the length direction of the detection ruler 222. The screw rod 2221 is coaxially and fixedly connected to the output shaft of the motor 2211.

[0064] Inside the end of the detection tube 221 away from the contact plate 212, a displacement sensor 2212 is fixedly arranged. The displacement sensor 2212 is an infrared sensor. At the end of the detection ruler 222 away from the contact plate 212, a displacement detection plate 2223 is fixedly arranged opposite to the displacement sensor 2212. The displacement detection plate 2223 is in the shape of a rectangular plate, and the plate surface is perpendicular to the length direction of the detection ruler 222. A pressure sensor 2224 is fixedly arranged at the apex angle of the conical head 2222.

[0065] Refer to Figure 3 and Figure 4 The displacement sensor 2212 and the pressure sensor 2224 are both electrically connected to a controller 223. The controller 223 is fixedly arranged on the top surface of the detection box 1 corresponding to the detection component 2. The displacement sensor 2212 is used to measure the displacement value of the movement of the detection plate and output the displacement value to the controller 223. The pressure sensor 2224 is used to measure the pressure received by the conical head 2222 and output the pressure value to the controller 223. The controller 223 is used to record the displacement value when the pressure value suddenly increases.

[0066] The side wall of the detection tube 221 is in a hollow state, and a plurality of air outlet holes 2213 are arranged on the outer side wall along the circumferential and axial directions. The air outlet holes 2213 are circular and penetrate the outer side wall of the detection tube 221. A hose 11 is connected between the outer side wall of the detection tube 221 and the bottom of the detection box 1. One end of the hose 11 close to the detection box 1 is provided with a one-way air valve 111, and the conduction direction of the one-way air valve 111 is from the detection box 1 to the detection tube 221.

[0067] During use, the telescopic frame 211 drives the contact plate 212 to sink in the river water. The contact plate 212 drives the detection tube 221 and the detection ruler 222 to sink until the contact plate 212 abuts against the silt of the river channel. At the same time, the contact plate 212 rotates according to the silt surface of the river channel to make the detection ruler 222 perpendicular to the silt surface. Then, the motor 2211 is started. The motor 2211 drives the screw rod 2221 to rotate, and the screw rod 2221 drives the detection ruler 222 to move towards the silt. The displacement sensor 2212 measures the displacement value of the movement of the displacement detection plate 2223 on the detection ruler 222 and outputs the displacement value to the controller 223. The pressure sensor 2224 measures the pressure value received by the conical head 2222 of the detection ruler 222 and outputs the pressure value to the controller 223 until the conical head 2222 abuts against the bottom of the river channel. The pressure value measured by the pressure sensor 2224 suddenly increases, and the controller 223 records the displacement value of the displacement sensor 2212 when the pressure value suddenly increases, thereby completing the measurement of the thickness of the river channel silt.

[0068] The implementation principle of a river silt thickness detection device according to an embodiment of the present application is as follows: During use, the air pump 32 is started, and the air pump 32 inflates multiple detection boxes 1. Under the action of the air pressure in the detection boxes 1, the telescopic rod 31 extends, so that the multiple detection boxes 1 are arranged in a net shape above the river. Then, the fixing block 411 is pulled. The fixing block 411 pulls the steel wire rope 423, and the steel wire rope 423 pulls the reel 421 to rotate until the fixing block 411 moves to one side of the river. By knocking the fixing block 411, the fixing nail 412 is inserted into one side of the river. The clamping nut 432 is rotated so that the clamping nut 432 moves to the position of the card slot 4311 of the card sleeve 431, and the steel wire rope 423 is fixed to the card sleeve 431.

[0069] Under the action of gravity, the telescopic frame 211 causes the contact plate 212, the detection tube 221, and the detection ruler 222 to sink into the silt of the river. The motor 2211 is started, and the motor 2211 drives the detection ruler 222 to move through the screw rod 2221. The detection ruler 222 drives the displacement detection plate 2223 to move. The displacement sensor 2212 measures the displacement value of the movement of the displacement detection plate 2223 and outputs the displacement value to the controller 223. The pressure sensor 2224 measures the pressure value of the cone head 2222 and outputs the pressure value to the controller 223. The controller 223 records the displacement value when the pressure value suddenly increases. Thus, through the multi-point simultaneous detection of multiple detection boxes 1, the detection device is convenient for simultaneously detecting the thickness of the river silt at multiple points, improving the accuracy of the river silt detection.

[0070] The above are all preferred embodiments of the present application. The protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A device for detecting the thickness of river channel silt, characterized in that, include: A detection box (1), wherein a plurality of the detection boxes (1) are arranged along the length direction and the width direction of the river channel; A detection component (2), wherein the detection components (2) are provided in a plurality of groups and correspond one to one with the detection boxes (1); the detection components (2) are provided on the detection box (1) and are used to measure the thickness of river channel silt; An expansion assembly (3), the expansion assembly (3) comprising a telescopic rod (31) and an air pump (32); The telescopic rod (31) is hollow inside and is provided in plurality. The plurality of telescopic rods (31) are respectively provided between two adjacent detection boxes (1). The number of the telescopic rods (31) between two adjacent detection boxes (1) is more than two and is an even number. The more than two telescopic rods (31) are symmetrically connected to the two adjacent detection boxes (1) and are fixedly connected at one end close to each other. The inflation pump (32), the inflation pump (32) is connected to the plurality of detection boxes (1) through pipelines; A fixing assembly (4), wherein the fixing assembly (4) is provided in a plurality of groups and corresponds one to one with the detection boxes (1) located on both sides of the river in the length direction, the fixing assembly (4) is provided on the river and connected to the detection box (1), and the fixing assembly (4) is used to fix the detection box (1) to the river; The detection component (2) comprises: A telescopic portion (21), the telescopic portion (21) being arranged on a side of the detection box (1) close to the bottom of the river channel; A detection part (22), the detection part (22) is arranged on the telescopic part (21) and is used to detect the depth of river channel silt, and the telescopic part (21) is used to drive the detection part (22) to move onto the river channel silt; The telescopic part (21) comprises a telescopic frame (211) and a contact plate (212); the telescopic frame (211) is a multi-stage telescopic component, and the fixed end is fixedly connected to the detection box (1); the contact plate (212) is hinged on the smallest movable end of the telescopic frame (211); and the detection part (22) is arranged on the contact plate (212); The detection part (22) comprises a detection tube (221) and a detection ruler (222); the detection tube (221) is fixedly arranged on a side of the contact plate (212) close to the telescopic frame (211); the detection ruler (222) is located inside the detection tube (221) and is inserted on the contact plate (212); the detection ruler (222) is slidably connected to the contact plate (212) and is vertically arranged with the contact plate (212); the inside of the detection tube (221) is in a sealed state; a motor (2211) is fixedly arranged inside the end of the detection ruler (222) away from the contact plate (212); a screw rod (2221) is inserted inside the detection ruler (222) and is threadedly connected to the screw rod (2221); the screw rod (2221) is coaxially fixedly connected with the output shaft of the motor (2211); The side wall of the detection tube (221) is in a hollow state, and a plurality of air outlet holes (2213) are formed in the outer side wall. A flexible tube (11) is connected between the side wall of the detection tube (221) and the detection box (1). A one-way air valve (111) is arranged on the flexible tube (11), and the conduction direction of the one-way air valve (111) is from the detection box (1) to the side wall of the detection tube (221).

2. The thickness detection device for river channel silt according to claim 1, wherein A displacement sensor (2212) is fixedly arranged at one end of the detection tube (221) away from the contact plate (212). A displacement detection plate (2223) is fixedly arranged at one end of the detection ruler (222) located inside the detection tube (221), and a pressure sensor (2224) is fixedly arranged at one end of the detection ruler (222) located outside the detection tube (221). Both the displacement sensor (2212) and the pressure sensor (2224) are electrically connected to a controller (223). The displacement sensor (2212) and the displacement detection plate (2223) are arranged opposite to each other. The displacement sensor (2212) is used to measure the displacement value of the movement of the displacement detection plate (2223) and output the displacement value to the controller (223). The pressure sensor (2224) is used to measure the pressure value received by the detection ruler (222) and output the pressure value to the controller (223). The controller (223) is used to record the displacement value when the pressure value suddenly increases.

3. The thickness detection device for river channel silt according to claim 1, wherein The fixing assembly (4) includes: A fixing part (41) which is connected to the detection box (1) and is used to fix the detection box (1) to the side of the river channel; A connecting part (42) which is arranged between the detection box (1) and the fixing part (41). The connecting part (42) is used to connect the fixing part (41) and the detection box (1) and is used to adjust the distance between the fixing part (41) and the detection box (1); A clamping part (43) which is arranged on the detection box (1) and is used to fix the connecting part (42) after the connecting part (42) adjusts the distance between the fixing part (41) and the detection box (1).

4. The river channel silt thickness detection device according to claim 3, characterized in that, The fixing part (41) includes a fixing block (411) and a fixing nail (412). The fixing block (411) is fixedly connected to the fixing nail (412). The fixing nail (412) is inserted into one side of the river channel, and the fixing block (411) is connected to the detection box (1).

5. The river channel silt thickness detection device according to claim 4, wherein, The connecting part (42) includes a reel (421), a torsion spring (422) and a steel wire rope (423). The reel (421) is rotatably arranged on the detection box (1). The torsion spring (422) is fixedly arranged between the reel (421) and the detection box (1). One end of the steel wire rope (423) is fixedly connected to the reel (421) and wound around the reel (421), and the other end is fixedly connected to the fixing block (411).

6. The river channel silt thickness detection device according to claim 5, characterized in that, The clamping part (43) includes a ferrule (431) and a clamping nut (432). The ferrule (431) is fixedly connected to the detection box (1), and a plurality of clamping grooves (4311) are formed in the side wall thereof. The steel wire rope (423) is arranged in the ferrule (431) and is slidably connected to the ferrule (431). The clamping nut (432) is sleeved on the ferrule (431) and is threadedly connected to the ferrule (431).

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