An automatic monitoring device for sediment particle size distribution for mountain flood and sand disasters

Abstract

The present invention discloses an automatic monitoring device for sediment particle size distribution for mountain flood and sand disaster, including a sediment pipe, a side fixing block fixedly connected to the outside of the sediment pipe, a clamping plate fixedly connected to the other end of the side fixing block, a crossbeam fixedly connected between the clamping plates, a motor seat fixedly connected to the outside of the clamping plate, a rotating motor arranged at the upper end of the motor seat, a transmission gear connected to the output end of the rotating motor, and a transmission disk fixedly connected to one side of the transmission gear penetrating the clamping plate. In the present invention, the sediment pipe is used to access a pipeline for transmitting mountain floods, and the sediment in the mountain flood can be filtered and monitored at a long distance in conjunction with a filter screen, and the sediment in the mountain flood can be sealed in the sediment pipe by a flip frame to achieve solid-liquid separation and reduce the impact on the monitoring results. At the same time, the sand pushing bar can be used to clean the sand in the sand box after the last monitoring to avoid sand accumulation, and ensure that there is no sand residue in the sand box before each monitoring, and the structure is reasonable.

Description

Technical Field

[0001] The invention relates to the technical field of particle size monitoring devices, and in particular to an automatic monitoring device for sediment particle size distribution used for mountain flood and sand disasters. Background Art

[0002] Mountain floods often carry a large amount of sediment, which is an important factor in river self-regulation. Sediment particle analysis is the basic work in sediment research, mainly providing basic information for research on river evolution, water ecological environment, and geological landforms. There are many methods for particle size analysis, including the screening method with simple equipment and intuitive results and the laser method with fast testing speed.

[0003] At present, the analysis process of sediment particle size of flash floods and sandstorms mostly adopts sampling at the scene of occurrence and testing at the testing agency afterwards. This testing method is time-consuming and slow to issue test reports. In addition, the sediment particle size may change at different time periods when flash floods occur, which means that multiple sampling is required, which greatly increases the difficulty of sampling for samplers. In addition, since they are working in dangerous accident sites, they may also be harmed. Summary of the invention

[0004] The purpose of the present invention is to solve the above problems and to propose an automatic monitoring device for sediment particle size distribution for mountain flood and sand disasters.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An automatic monitoring device for sediment particle size distribution for mountain flood and sand disasters comprises a sediment pipe, a side fixing block is fixedly connected to the outer side of the sediment pipe, a clamping plate is fixedly connected to the other end of the side fixing block, a cross beam is fixedly connected between the clamping plates, a motor seat is fixedly connected to the outer side of the clamping plate, a rotating motor is arranged on the upper end of the motor seat, two mutually meshing transmission gears are transmission-connected to the output end of the rotating motor, a transmission disk fixedly connected to the transmission gear is arranged on the inner side of the clamping plate, a through hole is opened on the transmission disk, and a monitoring mechanism for monitoring the sediment particle size is arranged between the clamping plates.

[0007] Preferably, the monitoring mechanism includes a monitor, a cable is fixedly connected to the upper end of the monitor, sliding clamps are provided on both sides of the cable, the sliding clamps are connected to the inclined bar, the inclined bar is provided with a sliding inner groove, the sliding clamps are slidably connected to the sliding inner groove, the other end of the inclined bar is rotatably connected to the outer side of the upper rotating block through a hinge seat, a tilting block is provided at the lower end of the tilting bar, the tilting block is fixedly connected to the outer side of the upper rotating block, and a limit piece for limiting the movement of the upper rotating block is connected to the outer side of the upper rotating block.

[0008] Preferably, the limiting member includes a lifting bar, one end of which passes through the upper rotating block and is fixedly connected to the outside of the lower rotating block, a horizontal slider is sleeved on the outside of the lifting bar, a slide block is fixedly connected to the inside of the clamping plate, one side of the horizontal slider is slidably connected to the slide block, and the other side of the horizontal slider is slidably connected to the outside of the lifting bar, a side column is fixedly connected to the outside of the upper rotating block, and the side column is rotatably connected in the through hole.

[0009] Preferably, a limiting slide is fixedly connected to one side of the clamping plate, a sand box is arranged between the limiting slides, a side rail block is fixedly connected to the outer side of the sand box, one side of the limiting slide is slidably connected to the side rail block, a sand falling groove is provided on the outer side of the sand box, sand pushing blocks are symmetrically fixedly connected to the outer side of the sand box, a sand pushing block is slidably connected in the sand falling groove, a sand pushing bar is fixedly connected to one side of the sand pushing block, a sand pushing spring is fixedly connected to the other side of the sand pushing block, the other end of the sand pushing spring is fixedly connected to the bottom end of the sand box, and a flip assembly for filtering mud and sand is connected to the outer side of the sand box.

[0010] Preferably, the lower end of the sand box is fixedly connected to an inclined slide, a sliding inner groove is provided on the inclined slide, the lower end of the lower rotating block is fixedly connected to an inclined connecting rod, one end of the inclined connecting rod is fixedly connected to a sliding column, and the sliding column is slidably connected in the sliding inner groove.

[0011] Preferably, the flip assembly includes a flip frame, a filter screen is fixedly connected to the flip frame, a hinged seat is fixedly connected to one side of the filter screen, the flip frame is connected to the upper end of the sand box through a hinged frame, a gravity cover plate is rotatably connected to one side of the flip frame, the flip frame is rotatably connected to the outside of the through-axis, fixing strips are fixedly connected at both ends of the through-axis, one end of the fixing strip is fixedly connected to the outside of the clamping plate, a flip spring is sleeved on the outside of the through-axis, one end of the flip spring is fixedly connected to the outside of the flip frame, and the other end of the flip spring is fixedly connected to the inside of the fixing strip, a flip groove is opened on the outside of the mud and sand pipe, and the flip frame is arranged on the outside of the flip groove.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0013] 1. This application adopts a sediment pipe structure, uses the sediment pipe to connect to the pipeline for transmitting mountain torrents, and cooperates with the filter screen to filter and monitor the sediment in the mountain torrents from a long distance. The sediment is sealed in the sediment pipe by a flip frame to achieve solid-liquid separation and reduce the impact on the monitoring results. At the same time, the sand pushing bar can be used to clean the sand in the sand box after the last monitoring to avoid sand accumulation, ensuring that there is no sand residue in the sand box before each monitoring, and the structure is reasonable.

[0014] 2. The present application adopts a sand box structure. The sand box is driven by the lower rotating block so that the sand falling into the sand box from the filter is evenly spread on its surface, so that when the monitor is pressed down, the sand will not accumulate, thereby improving the effect of the laser detection of the monitor. The inclined bars are used so that during the docking process between the upper rotating block and the lower rotating block, the sand pushing block is pushed by the lower rotating block, so that the monitor is separated from the sand box, and the sand is cleaned after the monitoring, which is convenient for the next monitoring. The monitoring is real-time monitoring, and the time difference between adjacent monitoring can be controlled by controlling the rotation rate of the rotating motor. At the same time, since two sediment tubes are provided, a single monitoring can generate two sets of monitoring data, which can be screened based on the comparison. If the data differ greatly, the group of data is discarded. If the data differ slightly, the average value can be taken. The equipment can greatly improve the accuracy of sediment particle size monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram showing the overall structure of a monitoring device provided in an embodiment of the present invention is shown;

[0016] Figure 2 A schematic diagram of the connection structure between the clamping plates provided according to an embodiment of the present invention is shown;

[0017] Figure 3 It shows a schematic structural diagram of a horizontal slider connection provided in an embodiment of the present invention;

[0018] Figure 4 It shows a schematic diagram of an exploded structure of a lifting strip connection provided in accordance with an embodiment of the present invention;

[0019] Figure 5 A schematic diagram of the explosion structure of a sand box provided according to an embodiment of the present invention is shown;

[0020] Figure 6 It shows a schematic diagram of the structure of the monitor connection provided in an embodiment of the present invention;

[0021] Figure 7 It shows a schematic structural diagram of a flip tank provided according to an embodiment of the present invention;

[0022] Figure 8 A schematic diagram of the exploded structure of a turnover frame provided according to an embodiment of the present invention is shown.

[0023] Legend:

[0024] 1. Sediment pipe; 2. Side fixing block; 3. Clamping plate; 4. Motor seat; 5. Rotating motor; 6. Transmission gear; 7. Fixing bar; 8. Crossbeam; 9. Slide block; 10. Horizontal slider; 11. Lifting bar; 12. Tilt bar; 13. Monitor; 14. Limiting slide plate; 15. Turning spring; 16. Through shaft; 17. Filter; 18. Turning frame; 19. Articulated frame; 20. Sand box; 21. Upper rotating block; 22. Side rail block; 23. Articulated seat; 24. Sand pushing block; 25. Inclined slide; 26. Sand pushing spring; 27. Sand pushing bar; 28. Sand pushing block; 29. ​​Sand falling chute; 30. Side column; 31. Tilting block; 32. Sliding inner groove; 33. Sliding clamp block; 34. Cable; 35. Lower rotating block; 36. Oblique connecting rod; 37. Sliding column; 38. Transmission plate; 39. Through hole; 40. Flip groove; 41. Gravity cover plate. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-8 , the present invention provides a technical solution:

[0027] An automatic monitoring device for sediment particle size distribution for mountain flood and sand disasters includes a sediment pipe 1, a side fixing block 2 is fixedly connected to the outer side of the sediment pipe 1, a clamping plate 3 is fixedly connected to the other end of the side fixing block 2, a crossbeam 8 is fixedly connected between the clamping plates 3, a motor base 4 is fixedly connected to the outer side of the clamping plates 3, a rotating motor 5 is arranged on the upper end of the motor base 4, and the output end of the rotating motor 5 is transmission-connected to two mutually meshing transmission gears 6, a transmission disk 38 fixedly connected to the transmission gear 6 is arranged on the inner side of the clamping plate 3, a through hole 39 is opened on the transmission disk 38, and a monitoring mechanism for monitoring the sediment particle size is arranged between the clamping plates 3. The monitoring mechanism includes a monitor 13, a cable 34 is fixedly connected to the upper end of the monitor 13, sliding clamps 33 are arranged on both sides of the cable 34, the sliding clamps 33 are connected to the tilting bar 12, a sliding inner groove 32 is opened on the tilting bar 12, the sliding clamps 33 are slidably connected to the sliding inner groove 32, the other end of the tilting bar 12 is rotatably connected to the outer side of the upper rotating block 21 through a hinge seat 23, a tilting block 31 is arranged at the lower end of the tilting bar 12, the tilting block 31 is fixedly connected to the outer side of the upper rotating block 21, and a limit piece for limiting the movement of the upper rotating block 21 is connected to the outer side of the upper rotating block 21. The limiting member includes a lifting bar 11, one end of which passes through the upper rotating block 21 and is fixedly connected to the outside of the lower rotating block 35. A horizontal slider 10 is sleeved on the outside of the lifting bar 11, and a slide block 9 is fixedly connected to the inside of the clamping plate 3. One side of the horizontal slider 10 is slidably connected to the slide block 9, and the other side of the horizontal slider 10 is slidably connected to the outside of the lifting bar 11. A side column 30 is fixedly connected to the outside of the upper rotating block 21, and the side column 30 is rotatably connected in the through hole 39. A limiting slide plate 14 is fixedly connected to one side of the clamping plate 3, and a sand box 20 is arranged between the limiting slide plates 14. A side rail block 22 is fixedly connected to the outer side of the sand box 20, and one side of the limiting slide plate 14 is slidably connected in the side rail block 22. A sand falling groove 29 is opened on the outer side of the sand box 20, and sand pushing blocks 24 are symmetrically fixedly connected to the outer side of the sand box 20. A sand pushing block 28 is slidably connected in the sand falling groove 29, one side of the sand pushing block 28 is fixedly connected to a sand pushing bar 27, and the other side of the sand pushing block 28 is fixedly connected to a sand pushing spring 26, and the other end of the sand pushing spring 26 is fixedly connected to the bottom of the sand box 20, and a flip assembly for filtering mud and sand is connected to the outer side of the sand box 20. The lower end of the sand box 20 is fixedly connected to an inclined slide 25, and a sliding inner groove 32 is opened on the inclined slide 25. The lower end of the lower rotating block 35 is fixedly connected to an inclined connecting rod 36, and one end of the inclined connecting rod 36 is fixedly connected to a sliding column 37, and the sliding column 37 is slidably connected in the sliding inner groove 32.The flip assembly includes a flip frame 18, to which a filter screen 17 is fixedly connected, and a hinge seat 23 is fixedly connected on one side of the filter screen 17. The flip frame 18 is connected to the upper end of the sand box 20 through a hinge frame 19, and a gravity cover plate 41 is rotatably connected on one side of the flip frame 18. The flip frame 18 is rotatably connected to the outside of the through-shaft 16, and fixed bars 7 are fixedly connected at both ends of the through-shaft 16. One end of the fixed bar 7 is fixedly connected to the outside of the clamping plate 3. A flip spring 15 is sleeved on the outside of the through-shaft 16, and one end of the flip spring 15 is fixedly connected to the outside of the flip frame 18, and the other end of the flip spring 15 is fixedly connected to the inside of the fixed bar 7. A flip groove 40 is opened on the outside of the mud and sand pipe 1, and the flip frame 18 is arranged on the outside of the flip groove 40.

[0028] Specifically, Figure 3 As shown, the monitoring mechanism includes a monitor 13, a cable 34 is fixedly connected to the upper end of the monitor 13, sliding clamps 33 are arranged on both sides of the cable 34, the sliding clamps 33 are connected to the tilting bar 12, a sliding inner groove 32 is opened on the tilting bar 12, the sliding clamps 33 are slidably connected to the sliding inner groove 32, the other end of the tilting bar 12 is rotatably connected to the outer side of the upper rotating block 21 through a hinge seat 23, a tilting block 31 is arranged at the lower end of the tilting bar 12, the tilting block 31 is fixedly connected to the outer side of the upper rotating block 21, and a limiter for limiting the movement of the upper rotating block 21 is connected to the outer side of the upper rotating block 21. The limiting member includes a lifting bar 11, one end of which passes through the upper rotating block 21 and is fixedly connected to the outside of the lower rotating block 35. A horizontal slider 10 is sleeved on the outside of the lifting bar 11, and a slide block 9 is fixedly connected to the inside of the clamping plate 3. One side of the horizontal slider 10 is slidably connected to the slide block 9, and the other side of the horizontal slider 10 is slidably connected to the outside of the lifting bar 11. A side column 30 is fixedly connected to the outside of the upper rotating block 21, and the side column 30 is rotatably connected in the through hole 39. The monitor 13 and the inclined bar 12 are connected by a sliding clamp 33. Under the support of gravity and the inclined block 31, the inclined bar 12 is set obliquely downward. When the equipment is running, the monitor 13 will be moved obliquely upward along the sliding inner groove 32 under the action of the sand pushing bar 27. At this time, the monitor 13 has completed the particle size detection of the sand particles; the lifting bar 11 is mainly to ensure that the upper rotating block 21 and the lower rotating block 35 always move up and down in the same plane to avoid misalignment, and the function of the horizontal slider 10 is the same; the through hole 39 is opened on the transmission disk 38 away from the center, and the two through holes 39 must be close to and away from each other at the same time.

[0029] Specifically, Figure 7As shown, a limiting slide plate 14 is fixedly connected to one side of the clamping plate 3, a sand box 20 is arranged between the limiting slide plates 14, a side rail block 22 is fixedly connected to the outer side of the sand box 20, one side of the limiting slide plate 14 is slidably connected in the side rail block 22, a sand falling groove 29 is opened on the outer side of the sand box 20, sand pushing blocks 24 are symmetrically fixedly connected to the outer side of the sand box 20, a sand pushing block 28 is slidably connected in the sand falling groove 29, a sand pushing bar 27 is fixedly connected to one side of the sand pushing block 28, a sand pushing spring 26 is fixedly connected to the other side of the sand pushing block 28, the other end of the sand pushing spring 26 is fixedly connected to the bottom of the sand box 20, and a flip assembly for filtering mud and sand is connected to the outer side of the sand box 20. The limiting slide plate 14 is mainly used to ensure that the sand box 20 can only move in the horizontal direction. The inclined slide 25 thereon will be restricted by the inclined connecting rod 36. When the inclined connecting rod 36 is driven by the upward movement of the lower rotating block 35, the sand box 20 and the lower rotating block 35 are urged to approach each other to complete the subsequent docking operation with the monitor 13. Because the lower rotating block 35 moves to the left or right when it moves upward, the movement of the sand box 20 and the moving part of the lower rotating block 35 offset each other, so that the sand box 20 moves inward. , so that the sand box 20 will not collide with the sediment pipe 1, and at this time the lower rotating block 35 will move toward or away from the sediment pipe 1; when the side column 30 moves to the leftmost or rightmost side of the transmission disk 38, the monitor 13 is completely docked with the sand box 20. At this point, the monitor 13 has completed the work of laser detection of particle size. At this time, the outer side of the sand pushing block 28 just fits with the outer side of the lower rotating block 35. When it continues to move, it will push the sand pushing bar 27 to clean the sand on the sand box 20, which is convenient for the next detection.

[0030] Specifically, Figure 6As shown, the lower end of the sand box 20 is fixedly connected to an inclined slide 25, and a sliding inner groove 32 is opened on the inclined slide 25. The lower end of the lower rotating block 35 is fixedly connected to an inclined connecting rod 36, and one end of the inclined connecting rod 36 is fixedly connected to a sliding column 37, and the sliding column 37 is slidably connected in the sliding inner groove 32. The flip assembly includes a flip frame 18, to which a filter screen 17 is fixedly connected, and a hinge seat 23 is fixedly connected on one side of the filter screen 17. The flip frame 18 is connected to the upper end of the sand box 20 through a hinge frame 19, and a gravity cover plate 41 is rotatably connected on one side of the flip frame 18. The flip frame 18 is rotatably connected to the outside of the through-shaft 16, and fixed bars 7 are fixedly connected at both ends of the through-shaft 16. One end of the fixed bar 7 is fixedly connected to the outside of the clamping plate 3. A flip spring 15 is sleeved on the outside of the through-shaft 16, and one end of the flip spring 15 is fixedly connected to the outside of the flip frame 18, and the other end of the flip spring 15 is fixedly connected to the inside of the fixed bar 7. A flip groove 40 is opened on the outside of the mud and sand pipe 1, and the flip frame 18 is arranged on the outside of the flip groove 40. The sand box 20 is driven by the lower rotating block 35 so that the sand particles falling into the sand box 20 from the filter screen 17 are evenly spread on its surface, so that when the monitor 13 is pressed down, the sand particles will not accumulate, thereby improving the effect of laser detection of the monitor 13. The inclined bar 12 is used so that during the docking process between the upper rotating block 21 and the lower rotating block 35, the lower rotating block 35 is used to push the sand pushing block 28, so that the monitor 13 is separated from the sand box 20. During the movement of the sand box 20, the sand particles will vibrate due to the movement and be spread in the sand box 20.

[0031] In summary, the automatic monitoring device for sediment particle size distribution for mountain flood and sand disaster provided by this embodiment connects two sediment pipes 1 to the mountain flood conveying pipeline respectively, and the filter screen 17 of the flip frame 18 is arranged in the sediment pipe 1 to filter the sediment. At this time, the flip spring 15 is pulled and twisted by the hinge frame 19, and the gravity cover plate 41 covers the outside of the flip groove 40. As the rotating motor 5 rotates, the two adjacent transmission plates 38 are driven to rotate, and the two side columns 30 move in a state of approaching and moving away from each other, driving the upper rotating block 21 and the lower rotating block 35 to rotate. The sand boxes 20 can only move horizontally under the action of the oblique connecting rod 36 and the sliding column 37, so that the two sand boxes 20 are close to each other and away from each other. When the sand boxes 20 are close to each other, the hinged frame 19 can be used to pull the flip frame 18 to flip. After losing the traction, the flip frame 18 is acted on by the flip spring 15, so that the filter screen 17 with sand particles is vertical, so that the sand particles fall into the sand box 20. When the upper rotating block 21 and the lower rotating block 35 are close to each other, the monitor 13 moves down and docks with the sand box 20, so that the monitor 13 The laser probe on the lower surface performs particle size analysis on the sand at the upper end of the sand box 20. As the lower rotating block 35 continues to move upward, the sand box 20 is driven to move toward the side of the lower rotating block 35 until one side of the sand pushing block 28 abuts against the outside of the lower rotating block 35. At this time, the lower end of the monitor 13 is separated from the sand box 20 under the action of the sand pushing bar 27 and tilts up and slides obliquely upward. The sand pushing bar 27 completes the operation of pushing the sand out of the sand falling trough 29, thereby cleaning the sand box 20. The laser monitoring data will be transmitted to the computer through the cable 34, and statistical analysis will be made, that is, the real The effect of automated monitoring is achieved. Compared with the traditional manual sampling and analysis method, the device realizes the operation of regular and uninterrupted automated monitoring of the sand particle size in mountain floods. The monitoring is real-time monitoring, and the time difference between adjacent monitoring can be controlled by controlling the rotation rate of the rotating motor 5. At the same time, since two sediment pipes 1 are provided, that is, a single monitoring can generate two sets of monitoring data, which can be screened based on the comparison. If the data differs greatly, the group of data is discarded. If the data differs slightly, the average value can be taken. The equipment can greatly improve the accuracy of sediment particle size monitoring.

[0032] The above description of the embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatic monitoring device for sediment particle size distribution for mountain flood and sand disasters, comprising a sediment pipe (1), characterized in that: The outer side of the sediment pipe (1) is fixedly connected to a side fixing block (2), the other end of the side fixing block (2) is fixedly connected to a clamping plate (3), a crossbeam (8) is fixedly connected between the clamping plates (3), the outer side of the clamping plates (3) is fixedly connected to a motor seat (4), a rotating motor (5) is arranged at the upper end of the motor seat (4), the output end of the rotating motor (5) is transmission-connected to two mutually meshing transmission gears (6), the inner side of the clamping plate (3) is provided with a transmission disk (38) fixedly connected to the transmission gear (6), the transmission disk (38) is provided with a through hole (39), and a monitoring mechanism for monitoring the sediment particle size is arranged between the clamping plates (3); One side of the clamping plate (3) is fixedly connected to a limiting slide plate (14), a sand box (20) is arranged between the limiting slide plates (14), a side rail block (22) is fixedly connected to the outside of the sand box (20), one side of the limiting slide plate (14) is slidably connected in the side rail block (22), a sand falling groove (29) is provided on the outside of the sand box (20), a sand pushing stopper (24) is symmetrically fixedly connected to the outside of the sand box (20), a sand pushing block (28) is slidably connected in the sand falling groove (29), one side of the sand pushing block (28) is fixedly connected to a sand pushing bar (27), the other side of the sand pushing block (28) is fixedly connected to a sand pushing spring (26), the other end of the sand pushing spring (26) is fixedly connected to the bottom of the sand box (20), and a flip assembly for filtering mud and sand is connected to the outside of the sand box (20).

2. The automatic monitoring device for sediment particle size distribution for mountain flood and sand disaster according to claim 1 is characterized in that: The monitoring mechanism comprises a monitor (13), the upper end of the monitor (13) is fixedly connected to a cable (34), both sides of the cable (34) are provided with sliding clamps (33), the sliding clamps (33) are connected to the tilting bar (12), the tilting bar (12) is provided with a sliding inner groove (32), the sliding clamps (33) are slidably connected to the sliding inner groove (32), the other end of the tilting bar (12) is rotatably connected to the outer side of the upper rotating block (21) through a hinge seat (23), the lower end of the tilting bar (12) is provided with a tilting block (31), the tilting block (31) is fixedly connected to the outer side of the upper rotating block (21), and the outer side of the upper rotating block (21) is connected to a limiter for limiting the movement of the upper rotating block (21).

3. The automatic monitoring device for sediment particle size distribution for mountain flood and sand disaster according to claim 2 is characterized in that: The limiting member comprises a lifting bar (11), one end of which passes through the upper rotating block (21) and is fixedly connected to the outside of the lower rotating block (35); a horizontal slider (10) is sleeved on the outside of the lifting bar (11); a slide block (9) is fixedly connected to the inside of the clamping plate (3); one side of the horizontal slider (10) is slidably connected to the slide block (9); the other side of the horizontal slider (10) is slidably connected to the outside of the lifting bar (11); a side column (30) is fixedly connected to the outside of the upper rotating block (21); and the side column (30) is rotatably connected in the through hole (39).

4. The automatic monitoring device for sediment particle size distribution for mountain flood and sand disaster according to claim 3 is characterized in that: The lower end of the sand box (20) is fixedly connected to an inclined slide frame (25), and a sliding inner groove (32) is formed on the inclined slide frame (25). The lower end of the lower rotating block (35) is fixedly connected to an inclined connecting rod (36), and one end of the inclined connecting rod (36) is fixedly connected to a sliding column (37), and the sliding column (37) is slidably connected in the sliding inner groove (32).

5. The automatic monitoring device for sediment particle size distribution for mountain flood and sand disaster according to claim 1, characterized in that: The flip assembly comprises a flip frame (18), a filter screen (17) is fixedly connected to the flip frame (18), one side of the filter screen (17) is fixedly connected to a hinge seat (23), the flip frame (18) is connected to the upper end of the sand box (20) through a hinge frame (19), one side of the flip frame (18) is rotatably connected to a gravity cover plate (41), the flip frame (18) is rotatably connected to the outside of a through-shaft (16), both ends of the through-shaft (16) are fixedly connected to fixing bars (7), one end of the fixing bar (7) is fixedly connected to the outside of a clamping plate (3), a flip spring (15) is sleeved on the outside of the through-shaft (16), one end of the flip spring (15) is fixedly connected to the outside of the flip frame (18), and the other end of the flip spring (15) is fixedly connected to the inside of the fixing bar (7), a flip groove (40) is opened on the outside of the sediment pipe (1), and the flip frame (18) is arranged on the outside of the flip groove (40).

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