A river sediment depth measuring device for hydrological survey

Abstract

The present invention provides a river sediment depth measuring device for hydrological survey, and relates to the technical field of hydrological survey. The river sediment depth measuring device for hydrological survey comprises a mounting seat, a mounting cylinder with a downward opening is mounted on the lower surface of the mounting seat, an electromagnet is mounted on the inner wall of the upper end of the mounting cylinder, a magnetic plate is provided directly below the electromagnet, the magnetic plate is connected to a detection mechanism, and the detection mechanism is also connected to the inner wall of the mounting cylinder; the detection mechanism comprises a tooth plate, the top of the tooth plate is fixedly connected to the lower surface of the magnetic plate, and the bottom of the tooth plate is fixedly connected to a fixed block; the tooth plate is slidably connected to the inner wall of the mounting cylinder through a connecting block, and the connecting block is arranged near the top of the tooth plate; a rotating shaft is rotatably connected in the mounting cylinder, and a coaxially rotating gear is fixedly connected to the rotating shaft, the gear is close to the bottom opening of the mounting cylinder, and the gear and the tooth plate are meshed with each other. The river sediment depth measuring device for hydrological survey provided by the present invention has the advantage of high detection accuracy.

Description

Technical Field

[0001] The invention relates to the technical field of hydrological survey, and in particular to a river sediment depth measuring device for hydrological survey. Background Art

[0002] Hydrological survey is an integral part of water conservancy science. Severe siltation in the river will affect the hydraulic conditions of the river, causing water to flow unsmoothly and making floods and silt accumulation more likely to occur. Therefore, when conducting hydrological surveys, measuring the depth of river silt is an important indicator.

[0003] At present, when measuring the sediment depth of a river, the sampling method is generally used for detection. During the measurement, the sampling point is single for one detection and is easily affected by conditions such as water flow, which in turn affects the accuracy of the river sediment depth detection.

[0004] Therefore, it is necessary to provide a new river sediment depth measuring device for hydrological survey to solve the above technical problems. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a river sediment depth measuring device for hydrological survey with improved detection accuracy.

[0006] The river sediment depth measuring device for hydrological survey provided by the present invention comprises: a mounting seat, a mounting tube with a downward opening is mounted on the lower surface of the mounting seat, an electromagnet is mounted on the inner wall of the upper end of the mounting tube, a magnetic plate is arranged directly below the electromagnet, the magnetic plate is connected to a detection mechanism, and the detection mechanism is also connected to the inner wall of the mounting tube;

[0007] The detection mechanism includes a toothed plate, the top of which is fixedly connected to the lower surface of the magnetic plate, and the bottom of the toothed plate is fixedly connected to a fixed block; the toothed plate is slidably connected to the inner wall of the mounting tube via a connecting block, and the connecting block is arranged near the top of the toothed plate; a rotating shaft is rotatably connected in the mounting tube, and a coaxially rotating gear is fixedly connected to the rotating shaft, the gear is close to the bottom opening of the mounting tube, and the gear and the toothed plate are meshed with each other; a speed sensor for detecting the rotating speed of the rotating shaft and an angle sensor for detecting the rotating angle of the rotating shaft are installed in the mounting tube, and a fixed cover is fixedly connected in the mounting tube, a speed regulating assembly is installed in the fixed cover, and the speed regulating assembly is connected to the rotating shaft;

[0008] The speed regulating assembly comprises a cylinder, which is rotatably connected in the fixed cover, and the cylinder rotates coaxially with the rotating shaft and is fixedly connected; the cylinder and the fixed cover are concentrically arranged, and the cylinder is elastically slidably connected with a connecting column, one end of the connecting column extends to the outside of the cylinder and is fixedly connected with an arc-shaped friction plate, and the arc-shaped friction plate is in friction contact with the inner wall of the fixed cover;

[0009] A control mechanism, wherein the control mechanism is connected to the outer surface of the mounting tube, and the bottom of the control mechanism extends to the bottom of the mounting tube, and the control mechanism is electrically connected to the electromagnet, and the control of the electromagnet is realized through the control mechanism,

[0010] A measuring rod, the bottom of which is connected to the upper surface of the mounting seat, and the top of which is fixedly connected to the output end of the electric push rod; the electric push rod passes through a support plate and is fixedly connected to the support plate, and a controller is installed on the support plate; the controller is electrically connected to a control mechanism, an electromagnet, a speed sensor, an angle sensor and the electric push rod.

[0011] Preferably, the speed regulating assembly further comprises a spring, wherein the spring is located in a mounting groove provided on the side of the cylinder, and one end of the spring is connected to the cylinder, and the other end of the spring is connected to the connecting column.

[0012] Preferably, the control mechanism includes a first side plate, which is fixedly connected to the outer surface of the mounting tube, and the lower surface of the first side plate is fixedly connected to a first fixed tube with an opening downward, and a first proximity switch for controlling the electromagnet is installed on the inner wall of the upper end of the first fixed tube, and the first proximity switch is electrically connected to the controller; the inner wall of the first fixed tube is provided with a sliding groove whose bottom is blocked by the first baffle, and a first connecting rod is slidably connected in the sliding groove, the first connecting rod extends from the bottom of the first fixed tube, and one end of the first connecting rod located below the first fixed tube is fixedly connected to a first counterweight seat, and the first counterweight seat is located below the mounting tube.

[0013] Preferably, a plurality of auxiliary measuring mechanisms are installed on the outer surface of the installation tube, the plurality of auxiliary measuring mechanisms are evenly arranged in a circle, and the distances between the bottoms of the plurality of auxiliary measuring mechanisms and the lower surface of the installation tube are different.

[0014] Preferably, the auxiliary measuring mechanism includes a second side plate, which is fixedly connected to the outer surface of the mounting tube, and is connected to a second fixed tube with an opening facing downward, a second proximity switch is installed on the inner wall of the upper end of the second fixed tube, and the second proximity switch is electrically connected to the controller; a limiting groove is provided on the inner wall of the second fixed tube, the bottom of which is blocked by the second baffle, a second connecting rod is slidably connected in the limiting groove, and the bottom of the second connecting rod extends to the bottom of the second fixed tube and is fixedly connected to a second counterweight seat.

[0015] Preferably, it also includes an external thread column, which is fixedly connected to the top of the second fixed tube, and the external thread column and the second fixed tube are arranged concentrically; the external thread column passes through the second side plate and is threadedly connected to the second side plate.

[0016] Preferably, it further comprises a retaining ring, which is fixedly connected to the outer surface of the second fixed tube and is arranged close to the bottom opening of the second fixed tube.

[0017] Preferably, the outer surface of the mounting tube is engraved with scale lines, and the outer surface of the scale lines is wrapped with a transparent protective film.

[0018] Preferably, an internal threaded sleeve is fixedly connected to the upper surface of the mounting seat, and a threaded connector is fixedly connected to the bottom of the measuring rod, and the threaded connector is detachably connected to the internal threaded sleeve by threads.

[0019] Compared with the related art, the river sediment depth measuring device for hydrological survey provided by the present invention has the following beneficial effects:

[0020] The present invention provides a river sediment depth measuring device for hydrological survey.

[0021] 1. When the first proximity switch in the present invention is triggered, the electric push rod stops working. Since the position of the first side plate is fixed, that is, the distance between the first proximity switch and the bottom of the measuring rod is fixed and can be measured, and the length of the first connecting rod and the height of the first counterweight seat are fixed and can be measured, the depth of river sediment can be detected;

[0022] 2. When the first proximity switch in the present invention is triggered, the electromagnet no longer magnetically attracts the magnetic plate. Under the action of gravity, the magnetic plate, the toothed plate and the fixed block move downward, and the toothed plate can drive the gear and the rotating shaft to rotate. The speed regulating assembly can keep the rotating shaft rotating at a uniform speed. The speed sensor detects the speed of the rotating shaft, and the angle sensor detects the rotation angle of the rotating shaft. When the fixed block contacts the mud layer, the speed of the rotating shaft decreases. At this time, the controller records the rotation angle of the rotating shaft detected by the angle sensor. The downward movement distance of the toothed plate and the fixed block can be calculated through the rotation angle of the rotating shaft, and the specific number is finally displayed on the display screen of the controller, so that the depth of the mud layer directly below the installation cylinder can be calculated.

[0023] 3. The present invention can realize two detections of river sediment depth through the control mechanism and the detection mechanism, thereby improving the accuracy of river sediment depth measurement;

[0024] 4. When the present invention is in use, before the detection mechanism works, the bottom of the installation tube is close to the mud layer, and the installation tube can play the role of a protective cover, reduce the influence of water flow on the work of the detection mechanism, and improve the detection accuracy of the detection mechanism;

[0025] 5. The rotating shaft in the present invention keeps rotating at a slow and uniform speed, so that the movement of the tooth plate is more stable, thereby improving the accuracy of measuring the depth of river sediment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic structural diagram of a preferred embodiment of a river sediment depth measuring device for hydrological survey provided by the present invention;

[0027] Figure 2 for Figure 1 A partial cross-sectional structural schematic diagram of a river sediment depth measuring device for hydrological survey shown;

[0028] Figure 3 for Figure 1 The structural schematic diagram of the control mechanism shown;

[0029] Figure 4 for Figure 1 The structural schematic diagram of the auxiliary measuring mechanism shown;

[0030] Figure 5 for Figure 2 The structural schematic diagram of the detection mechanism shown;

[0031] Figure 6 for Figure 5 A partial cross-sectional structural schematic diagram of the detection mechanism shown;

[0032] Figure 7 for Figure 6 A partial enlarged view of point A in the middle.

[0033] Numbers in the figure: 1. controller; 2. measuring rod; 3. mounting seat; 4. control mechanism; 41. first side plate; 42. first fixed cylinder; 43. first counterweight seat; 44. first connecting rod; 45. first proximity switch; 5. mounting cylinder; 6. auxiliary measuring mechanism; 61. second proximity switch; 62. retaining ring; 63. second counterweight seat; 64. external threaded column; 65. second side plate; 66. second fixed cylinder; 67. second connecting rod; 7. magnetic plate; 8. electromagnet; 9. detection mechanism; 91. fixed cover; 92. gear; 93. connecting block; 94. tooth plate; 95. fixed block; 96. speed regulating assembly; 961. arc friction plate; 962. spring; 963. connecting column; 964. cylinder; 97. speed sensor; 98. rotating shaft; 99. angle sensor; 10. electric push rod. DETAILED DESCRIPTION

[0034] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0035] Please refer to Figures 1 to 7 A river sediment depth measuring device for hydrological survey comprises: a mounting seat 3, a mounting tube 5 with a downward opening is mounted on the lower surface of the mounting seat 3, an electromagnet 8 is mounted on the inner wall of the upper end of the mounting tube 5, a magnetic plate 7 is arranged directly below the electromagnet 8, the magnetic plate 7 is connected to a detection mechanism 9, and the detection mechanism 9 is also connected to the inner wall of the mounting tube 5;

[0036] The control mechanism 4 is connected to the outer surface of the mounting tube 5, and the bottom of the control mechanism 4 extends to the bottom of the mounting tube 5. The control mechanism 4 is electrically connected to the electromagnet 8, and the control of the electromagnet 8 is realized through the control mechanism 4.

[0037] A measuring rod 2, the bottom of which is connected to the upper surface of the mounting seat 3, and the top of which is fixedly connected to the output end of the electric push rod 10; the electric push rod 10 passes through a support plate and is fixedly connected to the support plate, and a controller 1 is mounted on the support plate; the controller 1 is electrically connected to a control mechanism 4, an electromagnet 8, a speed sensor 97, an angle sensor 99 and the electric push rod 10.

[0038] It should be noted that when measuring the sediment depth, the electromagnet 8 is first energized so that the electromagnet 8 magnetically attracts the magnetic plate 7, so that the detection mechanism 9 is stably located in the installation tube 5; then the installation tube 5 is uniformly inserted downward into the liquid surface of the river channel through the electric push rod 10. Since the control mechanism 4 is located below the installation tube 5, the control mechanism 4 first contacts the sediment layer at the bottom of the river channel. When the control mechanism 4 contacts the sediment layer at the bottom of the river channel, the controller 1 receives a signal and stops the electric push rod 10 through the controller 1. At this time, the operator can observe the data on the measuring rod 2, and then can preliminarily understand the depth of the river sediment;

[0039] After the controller 1 receives the signal, the electromagnet 8 is powered off through the controller 1. At this time, the electromagnet 8 no longer magnetically attracts the magnetic plate 7. Under the action of gravity, the detection mechanism 9 slides out of the installation tube 5, and the river sediment depth is measured through the detection mechanism 9. Through two measurements, the accuracy of river sediment depth detection is improved.

[0040] refer to Figure 3 As shown, the control mechanism 4 includes a first side plate 41, which is fixedly connected to the outer surface of the mounting tube 5, and the lower surface of the first side plate 41 is fixedly connected to a first fixed tube 42 with an opening downward, and the inner wall of the upper end of the first fixed tube 42 is installed with a first proximity switch 45 for controlling the electromagnet 8, and the first proximity switch 45 is electrically connected to the controller 1; the inner wall of the first fixed tube 42 is provided with a slide groove whose bottom is blocked by the first baffle, and a first connecting rod 44 is slidably connected in the slide groove, and the first connecting rod 44 extends from the bottom of the first fixed tube 42, and the end of the first connecting rod 44 located below the first fixed tube 42 is fixedly connected to a first counterweight seat 43, and the first counterweight seat 43 is located below the mounting tube 5.

[0041] It should be noted that: under the action of the gravity of the first counterweight seat 43, the first connecting rod 44 extends to the bottom of the first fixed cylinder 42, and the first counterweight seat 43 is located below the installation cylinder 5; when the installation cylinder 5 is driven to move downward at a uniform speed by the electric push rod 10, the first counterweight seat 43 first contacts the silt layer at the bottom of the river channel. Due to the obstruction of the silt layer, the first connecting rod 44 gradually approaches and finally triggers the first proximity switch 45. When the first proximity switch 45 is triggered, the controller 1 receives a signal, so that the electric push rod 10 stops working and the electromagnet 8 is powered off. At this time, the electromagnet 8 no longer magnetically attracts the magnetic plate 7. Under the action of gravity, the detection mechanism 9 slides out of the installation cylinder 5.

[0042] It is also necessary to explain that: when the first proximity switch 45 is triggered, the electric push rod 10 stops working, and since the position of the first side plate 41 is fixed, that is, the distance between the first proximity switch 45 and the bottom of the measuring rod 2 is fixed and can be measured, and the length of the first connecting rod 44 and the height of the first counterweight seat 43 are fixed and can be measured, the depth of river sediment can be detected, and the specific depth D=D1+D2+D3+D4, D1 is the reading on the measuring rod 2, D2 is the distance between the first proximity switch 45 and the bottom of the measuring rod 2, D3 is the length of the first connecting rod 44, and D4 is the height of the first counterweight seat 43;

[0043] It is also necessary to explain that: the first counterweight seat 43 is located below the installation tube 5. At this time, the first fixed tube 42 and the installation tube 5 do not contact the mud layer, thereby avoiding the first fixed tube 42 squeezing the mud layer and causing the change of the depth of the mud layer directly below the installation tube 5. The first counterweight seat 43 is relatively small in size and has a certain distance from the installation tube 5, so it has little effect on the depth of the mud layer directly below the installation tube 5, thereby ensuring the detection accuracy of the detection mechanism 9; and the bottom area of ​​the first counterweight seat 43 is relatively large, and its weight is slightly greater than its buoyancy, which reduces the depth of the first counterweight seat 43 sinking into the mud layer, thereby ensuring the accuracy of the mud depth detection;

[0044] It is also necessary to explain that the bottom of the installation tube 5 is close to the mud layer, and the installation tube 5 can play the role of a protective cover, reduce the influence of water flow on the operation of the detection mechanism 9, and improve the detection accuracy of the detection mechanism 9.

[0045] refer to Figure 5 and Figure 6As shown, the detection mechanism 9 includes a tooth plate 94, the top of which is fixedly connected to the lower surface of the magnetic plate 7, and the bottom of the tooth plate 94 is fixedly connected to a fixed block 95; the tooth plate 94 is slidably connected to the inner wall of the mounting tube 5 through a connecting block 93, and the connecting block 93 is arranged near the top of the tooth plate 94; a rotating shaft 98 is rotatably connected inside the mounting tube 5, and the rotating shaft 98 is fixedly connected to a coaxially rotating gear 92, the gear 92 is close to the bottom opening of the mounting tube 5, and the gear 92 and the tooth plate 94 are meshed with each other; a speed sensor 97 for detecting the rotation speed of the rotating shaft 98 and an angle sensor 99 for detecting the rotation angle of the rotating shaft 98 are installed in the mounting tube 5, and a fixed cover 91 is fixedly connected inside the mounting tube 5, a speed regulating component 96 is installed in the fixed cover 91, and the speed regulating component 96 is connected to the rotating shaft 98.

[0046] It should be noted that when the electromagnet 8 no longer magnetically attracts the magnetic plate 7, under the action of gravity, the magnetic plate 7, the tooth plate 94 and the fixed block 95 move downward, the tooth plate 94 can drive the gear 92 and the rotating shaft 98 to rotate, and the speed regulating component 96 can keep the rotating shaft 98 rotating at a constant speed, and the speed sensor 97 detects the speed of the rotating shaft 98, and the angle sensor 99 detects the rotation angle of the rotating shaft 98. When the fixed block 95 contacts the sediment layer, the speed of the rotating shaft 98 decreases. At this time, the controller 1 records the rotation angle of the rotating shaft 98 detected by the angle sensor 99, and the downward movement distance of the tooth plate 94 and the fixed block 95 can be calculated by the rotation angle of the rotating shaft 98, and finally the specific number is displayed on the display screen of the controller 1; since the circumference of the gear 92 is constant and can be measured, the specific calculation formula is: L=C(w / 360°), L is the downward movement distance of the tooth plate 94 and the fixed block 95, C is the circumference of the gear 92, and w is the rotation angle of the rotating shaft 98;

[0047] Furthermore, since the installation position of the electromagnet 8 is fixed, that is, the initial positions of the magnetic plate 7, the tooth plate 94 and the fixed block 95 are fixed and can be measured and known in advance, the distance L of the tooth plate 94 and the fixed block 95 moving downward can be calculated by the above formula, and then the depth of the river sediment directly below the installation tube 5 can be accurately detected; the depth calculation formula here is: D1+P+L, D1 is the reading on the measuring rod 2, P is the distance from the lower surface of the electromagnet 8 to the bottom of the measuring rod 2, and L is the distance of the tooth plate 94 and the fixed block 95 moving downward;

[0048] It is also necessary to explain that: the control mechanism 4 and the detection mechanism 9 can realize two detections of the river sediment depth, thereby improving the accuracy of the river sediment depth measurement;

[0049] It should also be noted that the fixed block 95 is a truncated cone structure, and the bottom diameter of the fixed block 95 is larger than the top diameter, thereby increasing the contact area between the fixed block 95 and the sediment at the bottom of the river channel, ensuring that when the fixed block 95 contacts the sediment layer, the rotation speed of the rotating shaft 98 changes relatively significantly;

[0050] It is also necessary to explain that when the tooth plate 94 moves, the electric push rod 10 stops working, thereby ensuring that the mounting seat 3 and the mounting cylinder 5 are stably placed in the water body, thereby avoiding the interference of the movement of the mounting seat 3 and the mounting cylinder 5 on the water body, thereby improving the accuracy of river sediment depth detection;

[0051] It is also necessary to explain that: when the mounting seat 3 and the mounting tube 5 move downward, the electromagnet 8 magnetically attracts the magnetic plate 7 to ensure that the tooth plate 94 and the fixing block 95 are fixed in the mounting tube 5. At this time, the readings of the speed sensor 97 and the angle sensor 99 will not change, thereby avoiding the speed sensor 97 and the angle sensor 99 from accidentally working when the equipment is inserted into the water body and interfering with the river sediment depth detection, thereby improving the reliability of the device.

[0052] refer to Figure 7 As shown, the speed regulating component 96 includes a cylinder 964, which is rotatably connected in the fixed cover 91, and the cylinder 964 rotates coaxially with the rotating shaft 98 and is fixedly connected; the cylinder 964 is concentrically arranged with the fixed cover 91, and the cylinder 964 is elastically slidably connected with a connecting column 963, one end of the connecting column 963 extends to the outside of the cylinder 964 and is fixedly connected with an arc-shaped friction plate 961, and the arc-shaped friction plate 961 is in friction contact with the inner wall of the fixed cover 91; the speed regulating component 96 also includes a spring 962, which is located in a mounting groove opened on the side of the cylinder 964, and one end of the spring 962 is connected to the cylinder 964, and the other end of the spring 962 is connected to the connecting column 963.

[0053] It should be noted that when the rotating shaft 98 rotates, it can drive the cylinder 964 to rotate, and then drive the connecting column 963 and the arc friction plate 961 to rotate. The arc friction plate 961 is in stable friction contact with the inner wall of the fixed cover 91 through the spring 962. When the rotation speed of the rotating shaft 98 increases, under the action of centrifugal force, the friction between the arc friction plate 961 and the inner wall of the fixed cover 91 is increased. Similarly, when the rotation speed of the rotating shaft 98 decreases, the friction between the arc friction plate 961 and the inner wall of the fixed cover 91 is reduced, thereby ensuring that the rotating shaft 98 is kept in slow and uniform rotation, making the movement of the tooth plate 94 more stable, thereby improving the accuracy of the measurement of river sediment depth.

[0054] refer to Figure 4As shown, a plurality of auxiliary measuring mechanisms 6 are installed on the outer surface of the mounting tube 5, and the plurality of auxiliary measuring mechanisms 6 are arranged in a uniform circle, and the distances between the bottoms of the plurality of auxiliary measuring mechanisms 6 and the lower surface of the mounting tube 5 are different; the auxiliary measuring mechanism 6 includes a second side plate 65, and the second side plate 65 is fixedly connected to the outer surface of the mounting tube 5, and the second side plate 65 is connected to a second fixed tube 66 with a downward opening, and a second proximity switch 61 is installed on the inner wall of the upper end of the second fixed tube 66, and the second proximity switch 61 is electrically connected to the controller 1; a limiting groove is provided on the inner wall of the second fixed tube 66, and the bottom of the limiting groove is blocked by the second baffle, and a second connecting rod 67 is slidably connected in the limiting groove, and the bottom of the second connecting rod 67 extends to the bottom of the second fixed tube 66 and is fixedly connected to a second counterweight seat 63.

[0055] It should be noted that: when the detection mechanism 9 completes the detection, the electric push rod 10 continues to work, so that the second counterweight seat 63 contacts the mud at the bottom of the river channel. Due to the obstruction of the mud, the second connecting rod 67 approaches the second proximity switch 61 and finally triggers the second proximity switch 61. At this time, the controller 1 stops the electric push rod 10, and the data on the measuring rod 2 is penetrated and recorded. Since the installation position of the second side plate 65 is fixed, the reading on the measuring rod 2, the distance from the second proximity switch 61 to the bottom of the measuring rod 2, the length of the second connecting rod 67, and the height of the second counterweight seat 63 are all fixed and known. The measurement is similar to that of the control mechanism 4. At this time, it can further assist in detecting the depth of river mud; the bottom area of ​​the second counterweight seat 63 is large, and its weight is slightly greater than its buoyancy, which prevents the second counterweight seat 63 from sinking deeper into the mud layer, thereby improving the accuracy of mud depth detection;

[0056] It is also necessary to explain that: the plurality of second proximity switches 61 are numbered, and when a second proximity switch 61 is triggered, the corresponding number and the number on the measuring rod 2 at this time are recorded, and the electric push rod 10 continues to work by controlling the switch, and when the next second proximity switch 61 is triggered again, the corresponding number and the number on the measuring rod 2 at this time are recorded, and multi-point detection is achieved through the plurality of auxiliary measuring mechanisms 6, thereby improving the accuracy of river sediment depth measurement; at the same time, the plurality of auxiliary measuring mechanisms 6 are evenly arranged in a circle, and the flatness of the river sediment can also be detected through readings at different positions, which is conducive to the use of the device;

[0057] It is also necessary to explain that the second side plate 65 has a certain length to prevent the installation tube 5 from interfering with the depth of the mud and sand directly below the second fixing tube 66 when the installation tube 5 is inserted into the mud and sand.

[0058] refer to Figure 4As shown, it also includes an external thread column 64, which is fixedly connected to the top of the second fixed tube 66, and the external thread column 64 and the second fixed tube 66 are concentrically arranged; the external thread column 64 passes through the second side plate 65 and is threadedly connected to the second side plate 65.

[0059] It should be noted that the height difference between two adjacent second fixed cylinders 66 can be adjusted through the external threaded column 64, thereby improving the flexibility of the device. By adjusting the height of the second fixed cylinder 66, the second fixed cylinder 66 can also contact the sediment layer of the river channel before the control mechanism 4, thereby improving the flexibility of the device.

[0060] refer to Figure 4 As shown, a retaining ring 62 is further included. The retaining ring 62 is fixedly connected to the outer surface of the second fixed tube 66 , and the retaining ring 62 is arranged close to the bottom opening of the second fixed tube 66 .

[0061] It should be noted that the retaining ring 62 can play a blocking role, thereby preventing the second fixing tube 66 from being accidentally separated from the second side plate 65, thereby improving the reliability of the device.

[0062] refer to Figure 1 As shown, the outer surface of the installation tube 5 is engraved with scale lines, and the outer surface of the scale lines is wrapped with a transparent protective film.

[0063] It should be noted that the distance between the second fixing tube 66 and the mounting seat 3 can be intuitively and accurately understood through the scale line.

[0064] refer to Figure 1 As shown, an internal thread sleeve is fixedly connected to the upper surface of the mounting seat 3, and a threaded connector is fixedly connected to the bottom of the measuring rod 2, and the threaded connector is detachably connected to the internal thread sleeve by thread.

[0065] It should be noted that the threaded connector can be separated from the internal thread sleeve by rotating the mounting seat 3, thereby realizing the separation of the mounting seat 3 and the measuring rod 2. The mounting seat 3 and the measuring rod 2 can be folded and placed, which is beneficial to the storage of the device.

[0066] It should also be noted that a channel for the signal line to pass through is provided in the measuring rod 2, the first proximity switch 45, the second proximity switch 61, the speed sensor 97 and the angle sensor 99 are electrically connected to the input end of the controller 1, and the electromagnet 8 and the electric push rod 10 are electrically connected to the output end of the controller 1.

[0067] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A river sediment depth measuring device for hydrological survey, characterized in that: include: A mounting seat (3), wherein a mounting tube (5) with an opening facing downward is mounted on the lower surface of the mounting seat (3), an electromagnet (8) is mounted on the inner wall of the upper end of the mounting tube (5), a magnetic plate (7) is provided directly below the electromagnet (8), the magnetic plate (7) is connected to a detection mechanism (9), and the detection mechanism (9) is also connected to the inner wall of the mounting tube (5); The detection mechanism (9) comprises a toothed plate (94), the top of the toothed plate (94) being fixedly connected to the lower surface of the magnetic plate (7), and the bottom of the toothed plate (94) being fixedly connected to a fixing block (95); the toothed plate (94) being slidably connected to the inner wall of the mounting tube (5) via a connecting block (93), and the connecting block (93) being arranged close to the top of the toothed plate (94); a rotating shaft (98) being rotatably connected inside the mounting tube (5), and the rotating shaft (98) being fixedly connected to a coaxially rotating gear (9 2), the gear (92) is close to the bottom opening of the mounting tube (5), and the gear (92) and the toothed plate (94) are meshed with each other; a rotation speed sensor (97) for detecting the rotation speed of the rotating shaft (98) and an angle sensor (99) for detecting the rotation angle of the rotating shaft (98) are installed in the mounting tube (5), and a fixed cover (91) is fixedly connected in the mounting tube (5), and a speed regulating component (96) is installed in the fixed cover (91), and the speed regulating component (96) is connected to the rotating shaft (98); The speed regulating assembly (96) comprises a cylinder (964), the cylinder (964) being rotatably connected in the fixed cover (91), and the cylinder (964) and the rotating shaft (98) being coaxially rotatable and fixedly connected; the cylinder (964) and the fixed cover (91) are arranged concentrically, and the cylinder (964) is elastically slidably connected to a connecting column (963), one end of the connecting column (963) extending to the outside of the cylinder (964) and being fixedly connected to an arc-shaped friction plate (961), and the arc-shaped friction plate (961) is in frictional contact with the inner wall of the fixed cover (91); A control mechanism (4), the control mechanism (4) being connected to the outer surface of the mounting tube (5), and the bottom of the control mechanism (4) extending below the mounting tube (5), the control mechanism (4) being electrically connected to the electromagnet (8), and the control of the electromagnet (8) being achieved through the control mechanism (4); The control mechanism (4) comprises a first side plate (41), the first side plate (41) being fixedly connected to the outer surface of the mounting tube (5), and a first fixed tube (42) with a downward opening being fixedly connected to the lower surface of the first side plate (41), a first proximity switch (45) for controlling the electromagnet (8) being installed on the inner wall of the upper end of the first fixed tube (42), and the first proximity switch (45) being electrically connected to the controller (1); a sliding groove having a bottom blocked by a first baffle is provided on the inner wall of the first fixed tube (42), a first connecting rod (44) being slidably connected in the sliding groove, the first connecting rod (44) extending from the bottom of the first fixed tube (42), and a first counterweight seat (43) being fixedly connected to one end of the first connecting rod (44) located below the first fixed tube (42), and the first counterweight seat (43) being located below the mounting tube (5); A measuring rod (2), wherein the bottom of the measuring rod (2) is connected to the upper surface of the mounting seat (3), and the top of the measuring rod (2) is fixedly connected to the output end of the electric push rod (10); the electric push rod (10) passes through a support plate and is fixedly connected to the support plate, and a controller (1) is mounted on the support plate; the controller (1) is electrically connected to the control mechanism (4), the electromagnet (8), the rotation speed sensor (97), the angle sensor (99), and the electric push rod (10).

2. The river sediment depth measuring device for hydrological survey according to claim 1, characterized in that: The speed regulating assembly further comprises a spring (962), wherein the spring (962) is located in a mounting groove provided on the side of the cylinder (964), and one end of the spring (962) is connected to the cylinder (964), and the other end of the spring (962) is connected to the connecting column (963).

3. The river sediment depth measuring device for hydrological survey according to claim 1 or 2, characterized in that: A plurality of auxiliary measuring mechanisms (6) are installed on the outer surface of the installation tube (5); the plurality of auxiliary measuring mechanisms (6) are arranged in a uniform circular pattern, and the distances between the bottoms of the plurality of auxiliary measuring mechanisms (6) and the lower surface of the installation tube (5) are different.

4. The river sediment depth measuring device for hydrological survey according to claim 3 is characterized in that: The auxiliary measuring mechanism (6) comprises a second side plate (65), the second side plate (65) being fixedly connected to the outer surface of the mounting tube (5), and the second side plate (65) being connected to a second fixed tube (66) with an opening facing downward, a second proximity switch (61) being installed on the inner wall of the upper end of the second fixed tube (66), and the second proximity switch (61) being electrically connected to the controller (1); a limiting groove having a bottom blocked by a second baffle is formed on the inner wall of the second fixed tube (66), a second connecting rod (67) being slidably connected in the limiting groove, and a bottom of the second connecting rod (67) extending to the bottom of the second fixed tube (66) and being fixedly connected to a second counterweight seat (63).

5. The river sediment depth measuring device for hydrological survey according to claim 4, characterized in that: It also includes an external thread column (64), which is fixedly connected to the top of the second fixed cylinder (66), and the external thread column (64) and the second fixed cylinder (66) are arranged concentrically; the external thread column (64) passes through the second side plate (65) and is threadedly connected to the second side plate (65).

6. The river sediment depth measuring device for hydrological survey according to claim 5, characterized in that: It also includes a retaining ring (62), the retaining ring (62) being fixedly connected to the outer surface of the second fixed cylinder (66), and the retaining ring (62) being arranged close to the bottom opening of the second fixed cylinder (66).

7. The river sediment depth measuring device for hydrological survey according to claim 6, characterized in that: The outer surface of the installation cylinder (5) is engraved with scale lines, and the outer surface of the scale lines is wrapped with a transparent protective film.

8. The river sediment depth measuring device for hydrological survey according to claim 1, characterized in that: An internal thread sleeve is fixedly connected to the upper surface of the mounting seat (3), and a threaded connector is fixedly connected to the bottom of the measuring rod (2), wherein the threaded connector is detachably connected to the internal thread sleeve through threads.

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