A sediment discharge monitoring device for hydrological survey

Abstract

The application belongs to the technical field of hydrological test, and discloses a sediment flow monitoring device for hydrological test, which comprises a sediment meter, a bottom plate, a stand, a sliding frame, a float, a connecting rod and a mounting plate. The sediment meter is arranged on the bottom surface of the mounting plate. The top of the sliding frame is provided with two connecting plates. The top surfaces of the connecting plates are provided with two vertical plates at intervals. Two rotating holes are formed in the two vertical plates. A rotating shaft is rotatably arranged in the two rotating holes. A roller is fixedly arranged on the rotating shaft. The roller surface is in contact with the surface of the adjacent stand. The two vertical plates are provided with external thread pipes on the sides away from each other. Rubber damping pipes are arranged in the external thread pipes. The inner ring of the rubber damping pipe is matched with the rotating shaft. The float drives the sliding frame and the sediment meter to lift. When the roller and the rotating shaft are lifted and rotated, the rubber damping pipe applies damping force to the rotating shaft, so that the rotating speed of the rotating shaft and the roller is prevented from being too fast, thereby limiting the lifting speed of the float and the lifting frame under the action of waves and preventing the sediment meter from being damaged by oscillation.

Description

Technical Field

[0001] This utility model relates to the field of hydrological measurement technology, and in particular to a sediment flow monitoring device for hydrological measurement. Background Technology

[0002] Sediment testing is one of the hydrological testing items. It generally refers to the observation and measurement of the form, quantity, and evolution process of sediment movement with water flow in a watershed and body of water. It usually refers to the determination of suspended sediment transport rate, bed sediment transport rate, riverbed mass, and analysis of sediment particle size distribution in rivers.

[0003] Chinese utility model patent CN221280371U discloses a sediment flow monitoring device, including a sediment meter, a mounting frame, a liquid level sensor, a lifting assembly, and a controller. The sediment meter, liquid level sensor, lifting assembly, and controller are all mounted on the mounting frame and electrically connected to the controller. The lifting assembly is used to move the sediment meter and liquid level sensor up and down. The water level currently monitored by the liquid level sensor is set as a reference water level. When the water level drops, the liquid level sensor detects the drop and transmits a signal to the controller. The controller then activates the lifting assembly, which lowers the sediment meter until the distance between the water surface and the liquid level sensor matches the reference water level. At this point, the lifting assembly stops operating.

[0004] Regarding the aforementioned technologies, the inventors believe that the following defects exist: During the use of the above-mentioned device, if extreme environments such as strong winds or rapid currents are encountered, the water surface waves are large, causing the water level to change rapidly. This causes the lifting component to frequently control the sand measuring instrument to rise and fall. This high-frequency start and stop action causes the sand measuring instrument to vibrate, resulting in loosening or poor contact of its internal interfaces and circuits, which damages the sand measuring instrument. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a sediment flow monitoring device for hydrological testing.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a sediment flow monitoring device for hydrological testing, including a sediment meter and a base plate. Two vertically spaced columns are arranged on the base plate. A sliding frame is slidably mounted vertically on both columns. A float is installed inside the sliding frame. Several connecting rods are arranged at the bottom of the sliding frame. A mounting plate is installed at the lower end of the connecting rods. The sediment meter is mounted on the bottom surface of the mounting plate. Two horizontally arranged connecting plates are symmetrically arranged on the top of the sliding frame. Two vertical plates are spaced apart on the top surface of the connecting plates. Rotating holes are opened on both vertical plates. A rotating shaft is rotatably mounted inside both rotating holes. A roller is fixedly sleeved on the shaft located between the two vertical plates. The roller surface contacts the surface of the adjacent column. Externally threaded tubes, concentrically arranged with the rotating holes, are provided on the opposite side of the two vertical plates. A rubber damping tube is installed inside the externally threaded tube, and the inner ring of the rubber damping tube cooperates with the rotating shaft.

[0007] By adopting the above technical solution, a sand measuring instrument, sliding frame, float, rotating shaft, rollers, and rubber damping tube are set up. The float floats on the water surface. The rise and fall of the float drives the sliding frame, connecting rod, mounting plate, and sand measuring instrument to rise and fall, thereby adjusting the distance between the sand measuring instrument and the water surface. Furthermore, when the sliding frame rises and falls, it drives the rollers to rise and fall, causing the rollers and rotating shaft to rotate. When the water surface is large, causing rapid changes in water level, the rubber damping tube applies a damping force to the rotating shaft, preventing it from rotating too fast. This limits the rollers' rotation speed, thus limiting the rise and fall speed of the float and lifting frame under the action of waves, preventing damage to the sand measuring instrument due to oscillation.

[0008] Furthermore, the rubber damping tube is inserted into the external threaded tube, and a cap is spirally provided on the external threaded tube.

[0009] By adopting the above technical solution and setting a pipe cap, it is convenient to limit the rubber damping tube and also convenient to replace the rubber damping tube.

[0010] Furthermore, the inner wall of the externally threaded tube is provided with two convex strips arranged at intervals along its length, and the outer wall of the rubber damping tube is provided with grooves corresponding to the convex strips, the grooves slidingly engaging with the convex strips.

[0011] By adopting the above technical solution, protrusions and grooves are set to restrict the rubber damping tube and prevent it from rotating with the rotating shaft.

[0012] Furthermore, the length of the rubber damping tube is greater than the length of the externally threaded tube.

[0013] By adopting the above technical solution, the length of the rubber damping tube is set to be greater than the length of the external threaded tube, so that part of the rubber damping tube protrudes out of the external threaded tube, making it easier to pull the rubber damping tube out of the external threaded tube when it is replaced.

[0014] Furthermore, a limiting tube is fixedly sleeved at one end of the externally threaded tube near the vertical plate, and the length of the limiting tube is consistent with the length difference between the rubber tube and the externally threaded tube.

[0015] By adopting the above technical solution, a limiting tube is fixedly sleeved at one end of the external threaded pipe near the vertical plate. The limiting tube restricts the installation position of the pipe cap, preventing excessive screwing during pipe cap installation from squeezing the rubber damping tube, changing its shape, and thus changing the damping force of the rubber damping tube on the rotating shaft, causing the rotating shaft to have difficulty rotating or be unable to rotate.

[0016] Furthermore, the bottom of the sliding frame is provided with three fixed tubes and three connecting rods. The three connecting rods are slidably connected to the corresponding fixed tubes. One of the fixed tubes has a threaded hole horizontally opened, and a threaded rod is spirally arranged in the threaded hole. A handle is provided at the outer end of the threaded rod.

[0017] By adopting the above technical solution, a fixed pipe, a threaded rod, and a handle are installed. The connecting rod slides inside the fixed pipe, changing the distance between the mounting plate, the sand measuring instrument, and the sliding frame, thereby changing the distance between the sand measuring instrument and the water surface. This can be adjusted according to the required measurement. Rotating the handle drives the threaded rod to rotate. When the end of the threaded rod abuts against the corresponding connecting rod, the position of the connecting rod is fixed, thus fixing the position of the base plate relative to the fixed pipe.

[0018] Furthermore, a mesh cover is provided on the bottom surface of the mounting plate, and the sand measuring instrument is located inside the mesh cover.

[0019] By adopting the above technical solution, a mesh cover is installed on the bottom surface of the mounting plate to protect the sand measuring instrument and prevent large debris from adhering to the sand measuring instrument, which would affect its measurement results or prevent measurement.

[0020] Furthermore, the sliding frame includes two sliding tubes that are slidably mounted on two columns, a placement frame is provided between the two sliding tubes, the float is located inside the placement frame, and a positioning plate is provided on the top of the placement frame.

[0021] By adopting the above technical solution, a top plate is set together on the top of the two columns.

[0022] In summary, this utility model has the following beneficial effects: This application includes a sand measuring instrument, a sliding frame, a float, a rotating shaft, rollers, and a rubber damping tube. The float floats on the water surface, and its raising and lowering causes the sliding frame, connecting rod, mounting plate, and sand measuring instrument to rise and fall, thereby adjusting the distance between the sand measuring instrument and the water surface. Furthermore, when the sliding frame rises and falls, it drives the rollers to rise and fall, causing the rollers and rotating shaft to rotate. When the water surface is large, causing rapid changes in water level, the rubber damping tube applies a damping force to the rotating shaft, preventing it from rotating too quickly, thus limiting the rollers' rotation speed. This, in turn, limits the rising and falling speed of the float and lifting frame under the action of waves, preventing damage to the sand measuring instrument due to oscillation. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0024] Figure 2 This is a structural schematic diagram of the sliding frame and mounting plate according to an embodiment of this utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the connecting plate, roller, and pipe cap in an embodiment of this utility model;

[0026] Figure 4 This is a schematic diagram of the connecting plate and rollers in an embodiment of this utility model.

[0027] In the diagram: 10. Base plate; 11. Column; 12. Top plate; 20. Sliding frame; 21. Sliding tube; 22. Placement frame; 23. Positioning plate; 30. Float; 40. Connecting rod; 41. Mounting plate; 42. Sand measuring instrument; 43. Net cover; 50. Connecting plate; 51. Vertical plate; 52. Rotating shaft; 53. Roller; 54. External threaded tube; 55. Rubber damping tube; 56. Tube cap; 57. Raised strip; 58. Groove; 59. Limiting tube; 60. Fixing tube; 61. Threaded rod; 62. Handle. Detailed Implementation

[0028] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0029] like Figure 1-4As shown in the embodiment of this application, a sediment flow monitoring device for hydrological testing is disclosed, including a base plate 10, a sediment meter 42, a float 30, a roller 53, and a rubber damping tube 55. Two spaced columns 11 are vertically arranged on the base plate 10, and a sliding frame 20 is slidably mounted vertically on both columns 11. The float 30 is disposed within the sliding frame 20 and floats on the water surface. The movement of the float 30 causes the sliding frame 20 to move up and down. Several connecting rods 40 are provided at the bottom of the sliding frame 20, and a mounting plate 41 is provided at the lower end of the connecting rods 40. The sediment meter 42 is mounted on the bottom surface of the mounting plate 41. The movement of the sliding frame 20 adjusts the distance between the sediment meter 42 and the water surface. The top of the sliding frame 20 is symmetrically provided with two horizontally arranged connecting plates 50. The top surface of the connecting plates 50 is provided with two vertically arranged upright plates 51 at intervals. Both upright plates 51 are horizontally provided with rotating holes. A rotating shaft 52 is rotatably provided in the two rotating holes. Rollers 53 are fixedly sleeved on the shaft of the rotating shaft 52 located between the two upright plates 51. The wheel surface of the roller 53 is in contact with the surface of the adjacent column 11. When the sliding frame 20 is raised and lowered, it drives the roller 53 to be raised and lowered, so that the roller 53 and the rotating shaft 52 rotate. Two vertical plates 51 are provided with externally threaded pipes 54 arranged concentrically with the rotating hole on one side away from each other. A rubber damping tube 55 is provided inside the externally threaded pipe 54. The inner ring of the rubber damping tube 55 is engaged with the rotating shaft 52. When the water surface waves are large and the water level changes rapidly, the rubber damping tube 55 applies a damping force to the rotating shaft 52 to prevent the rotating shaft 52 from rotating too fast, thereby limiting the roller 53 and preventing the roller 53 from rotating too fast, thereby limiting the lifting speed of the float 30 and the lifting frame under the action of waves, and preventing the sand measuring instrument 42 from oscillating and being damaged.

[0030] Specifically, the rubber damping tube 55 is inserted into the externally threaded tube 54. A cap 56 is screwed onto the externally threaded tube 54 to limit the movement of the rubber damping tube 55 and facilitate its replacement. During replacement, the cap 56 is rotated to separate it from the externally threaded tube 54. The old rubber damping tube 55 is then removed from the externally threaded tube 54, and the new rubber damping tube 55 is inserted into the externally threaded tube 54. The cap 56 is then screwed onto the externally threaded tube 54. Two circumferentially spaced protrusions 57 are arranged along the length of the internal thread of the externally threaded tube 54. Corresponding to the protrusions 57, the outer wall of the rubber damping tube 55 has a groove 58. The groove 58 slides into the protrusions 57, limiting the movement of the rubber damping tube 55 and preventing it from rotating with the rotating shaft 52. The length of the rubber damping tube 55 is greater than the length of the external threaded tube 54, causing a portion of the rubber damping tube 55 to protrude from the external threaded tube 54, facilitating its removal from the external threaded tube 54 during replacement. A limiting tube 59 is fixedly fitted onto one end of the external threaded tube 54 near the vertical plate 51. The length of the limiting tube 59 is the same as the length difference between the rubber tube and the external threaded tube 54. The limiting tube 59 restricts the installation position of the tube cap 56, preventing excessive tightening during installation that could compress the rubber damping tube 55, alter its shape, and thus change the damping force of the rubber damping tube 55 on the rotating shaft 52, making it difficult or impossible for the rotating shaft 52 to rotate.

[0031] During setup, the sliding frame 20 has three fixed tubes 60 at its bottom and three connecting rods 40. Each connecting rod 40 is slidably connected to its corresponding fixed tube 60. One of the fixed tubes 60 has a horizontally threaded hole with a threaded rod 61 spirally installed inside. A handle 62 is located at the outer end of the threaded rod 61. The connecting rod 40 slides within the fixed tube 60, changing the distance between the mounting plate 41, the sand measuring instrument 42, and the sliding frame 20, thereby changing the distance between the sand measuring instrument 42 and the water surface. This distance can be adjusted according to the required measurement. Rotating the handle 62 causes the threaded rod 61 to rotate. When the end of the threaded rod 61 abuts against the corresponding connecting rod 40, the position of the connecting rod 40 is fixed, thus fixing the position of the base plate 10 relative to the fixed tube 60.

[0032] In the specific setup, a mesh cover 43 is provided on the bottom surface of the mounting plate 41, and the sand measuring instrument 42 is located inside the mesh cover 43 to protect the sand measuring instrument 42 and prevent large debris from adhering to the sand measuring instrument 42, which could affect its measurement results or prevent measurement. The sliding frame 20 includes two sliding tubes 21 respectively slidably mounted on two columns 11, and a placement frame 22 is provided between the two sliding tubes 21. The float 30 is located inside the placement frame 22, and a positioning plate 23 is provided on the top of the placement frame 22 to restrict the float 30 within the placement frame 22. A top plate 12 is provided on the top of the two columns 11 to ensure the stability of the two columns 11. The sand measuring instrument 42 is an isotope sand measuring instrument 42, which is based on the principle of radioactive penetration and can directly measure the suspended sediment content in the river.

[0033] The operating principle of the sediment flow monitoring device for hydrological testing in this embodiment is as follows: A float 30 floats on the water surface. The rise and fall of the float 30 drives the sliding frame 20, connecting rod 40, mounting plate 41, and sediment meter 42 to rise and fall, thereby adjusting the distance between the sediment meter 42 and the water surface. When the sliding frame 20 rises and falls, it drives the roller 53 to rise and fall, causing the roller 53 and rotating shaft 52 to rotate. When the water surface is large, causing rapid changes in water level, the rubber damping tube 55 applies damping force to the rotating shaft 52 to prevent it from rotating too fast, thus limiting the roller 53's rotation speed. This, in turn, limits the rise and fall speed of the float 30 and the lifting frame under wave action, preventing the sediment meter 42 from oscillating and being damaged.

[0034] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A sediment flow monitoring device for hydrological testing, comprising a sediment meter (42), characterized in that: It also includes a base plate (10), on which two vertically spaced columns (11) are arranged. A sliding frame (20) is slidably mounted vertically on both columns (11). A float (30) is installed inside the sliding frame (20). Several connecting rods (40) are provided at the bottom of the sliding frame (20). A mounting plate (41) is provided at the lower end of the several connecting rods (40). The sand measuring instrument (42) is installed on the bottom surface of the mounting plate (41). Two horizontally arranged connecting plates (50) are symmetrically arranged at the top of the sliding frame (20). The top surface of the connecting plates (50) Two upright plates (51) are spaced apart. Each upright plate (51) has a rotating hole. A rotating shaft (52) is rotatably installed in both rotating holes. A roller (53) is fixedly sleeved on the shaft between the two upright plates (51). The surface of the roller (53) is in contact with the surface of the adjacent column (11). On the side of the two upright plates (51) that is far apart from each other, there is an externally threaded tube (54) arranged concentrically with the rotating hole. A rubber damping tube (55) is installed inside the externally threaded tube (54). The inner ring of the rubber damping tube (55) is engaged with the rotating shaft (52).

2. The sediment flow monitoring device for hydrological measurement according to claim 1, characterized in that: The rubber damping tube (55) is inserted into the external threaded tube (54), and a tube cap (56) is spirally provided on the external threaded tube (54).

3. The sediment flow monitoring device for hydrological measurement according to claim 2, characterized in that: The inner wall of the externally threaded tube (54) is provided with two convex strips (57) arranged along its length direction at circumferential intervals. The outer wall of the rubber damping tube (55) is provided with a groove (58) corresponding to the convex strips (57), and the groove (58) slides with the convex strips (57).

4. A sediment flow monitoring device for hydrological measurement according to claim 3, characterized in that: The length of the rubber damping tube (55) is greater than the length of the external threaded tube (54).

5. A sediment flow monitoring device for hydrological testing according to claim 4, characterized in that: A limiting tube (59) is fixedly sleeved at one end of the external threaded tube (54) near the vertical plate (51), and the length of the limiting tube (59) is consistent with the length difference between the rubber tube and the external threaded tube (54).

6. A sediment flow monitoring device for hydrological measurement according to claim 1, characterized in that: The sliding frame (20) has three fixed tubes (60) at its bottom and three connecting rods (40). The three connecting rods (40) are slidably connected to the corresponding fixed tubes (60). One of the fixed tubes (60) has a threaded hole horizontally opened on it. A threaded rod (61) is spirally arranged in the threaded hole. A handle (62) is arranged at the outer end of the threaded rod (61).

7. A sediment flow monitoring device for hydrological measurement according to claim 1, characterized in that: The bottom surface of the mounting plate (41) is provided with a mesh cover (43), and the sand measuring instrument (42) is located inside the mesh cover (43).

8. A sediment flow monitoring device for hydrological measurement according to claim 1, characterized in that: The sliding frame (20) includes two sliding tubes (21) respectively slidably disposed on two columns (11), a placement frame (22) is disposed between the two sliding tubes (21), the float (30) is located in the placement frame (22), and a positioning plate (23) is disposed on the top of the placement frame (22).

9. A sediment flow monitoring device for hydrological measurement according to claim 1, characterized in that: The two columns (11) share a common top plate (12).

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