A device for measuring the sediment concentration of the Yellow River water sample

Abstract

The application discloses a kind of Yellow River water sample sediment concentration measuring device, belong to Yellow River hydrology detection technical field, including fixed base, reversing mechanism, lifting mechanism, measuring rod and open-close sampling support, the reversing mechanism is located above fixed base, the lifting mechanism is located on reversing mechanism, the measuring rod is located on reversing mechanism, measuring rod is connected with lifting mechanism, the open-close sampling support is installed at the bottom of measuring rod, the fixed base is equipped with self-opening collection mechanism.The application provides a kind of Yellow River water sample sediment concentration measuring device, multiple repeated sampling of the same measuring point can be realized in water once, and after sampling is finished, water sample in multiple remote control horizontal sampler can be poured out and mixed simultaneously.

Description

Technical Field

[0001] This invention belongs to the field of Yellow River hydrological detection technology, specifically referring to a device for measuring the sediment content of Yellow River water samples. Background Technology

[0002] The Yellow River's flow is turbulent, and the movement of sediment in the water is intermittent and pulsating. When sampling Yellow River water, if a sample is taken only for a single instant at the same depth, there is a risk that the instantaneous sediment concentration will deviate significantly from the normal value, leading to distorted test results. Therefore, when using a remote-controlled horizontal sampler, it is necessary to repeat sampling at the same measuring point 2-3 times, mix these 2-3 samples into a single water sample, and then perform sediment content testing to ensure more accurate and reliable results.

[0003] Existing Yellow River water sampling devices can only perform one sampling per water entry. Some multi-compartment sediment sampling devices can collect multiple water samples per water entry, but they cannot guarantee that multiple water samples are collected at the same measuring point, and cannot achieve repeated sampling at the same measuring point. In addition, after each sampling, the staff needs to manually open the cylinder cover to pour out the water sample collected in the remote-controlled horizontal sampler, which is very inconvenient. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a Yellow River water sample sediment content measuring device, which can achieve multiple repeated sampling at the same measuring point with a single water entry, and can quickly pour out and mix water samples from multiple remote-controlled horizontal samplers after sampling.

[0005] The technical solution adopted by this invention is as follows: This invention provides a device for measuring the sediment content of Yellow River water samples, comprising a fixed base, a reversing mechanism, a lifting mechanism, a measuring rod, and an opening / closing sampling bracket. The reversing mechanism is located above the fixed base, the lifting mechanism is located on the reversing mechanism, the measuring rod is located on the reversing mechanism and connected to the lifting mechanism, and the opening / closing sampling bracket is installed at the bottom end of the measuring rod. The fixed base is provided with a self-opening collection mechanism. The opening / closing sampling bracket includes a fixed plate, a sliding cylinder, an opening / closing electric push rod, an opening / closing pull rod, and a swing support rod. The fixed plate is located below the measuring rod. An opening / closing electric actuator and a sliding cylinder are connected sequentially from top to bottom. A sliding disc is fixedly sleeved on the upper end of the sliding cylinder. Hinges are provided at equal intervals on the circumferential sidewalls of the fixed disc and the circumferential sidewalls of the sliding disc. One end of the swinging support rod is fixedly connected to a swing shaft, which is rotatably connected to the hinges on the sidewall of the sliding disc. Both ends of the opening / closing pull rod are rotatably connected to the hinges on the sidewall of the fixed disc and the swinging support rod, respectively. A mounting bracket is rotatably provided at the end of the swinging support rod. A remote-controlled horizontal sampler is installed in the mounting bracket. The opening / closing sampling bracket is provided with a steering mechanism that drives the mounting bracket to rotate, which is used to adjust the direction of the remote-controlled horizontal sampler.

[0006] Preferably, the steering mechanism includes a driven adjustment assembly mounted on each swing support rod and an active adjustment assembly mounted at the bottom of the sliding plate. The active adjustment assembly includes an annular cavity, an adjustment push ring, and an adjustment electric push rod. The annular cavity is coaxially sleeved on the outside of the sliding cylinder, the adjustment electric push rod is located on the bottom wall of the annular cavity, the adjustment push ring is coaxially slidably mounted in the annular cavity, and the adjustment push ring is located above the adjustment electric push rod. The driven adjustment assembly includes a wire rope, a fixed pipeline, a swing pipeline, an adjustment cylinder, a piston, a piston rod, and an adjustment hinge rod. The swing support rod has an adjustment cavity. A rotating shaft is fixedly connected to the upper wall of the mounting frame. The mounting frame is rotatably connected to the end of the swing support rod through the rotating shaft. The end of the rotating shaft rotatably passes through the swing support rod and extends into the adjustment cavity. An adjustment swing rod is fixedly connected to the end of the rotating shaft. The adjustment cylinder is located in the adjustment cavity, and the piston is slidably sealed in the adjustment cylinder. One end of the piston rod is fixedly installed on the side of the piston near the adjusting lever. The other end of the piston rod slides through the side wall of the adjusting cylinder and extends out of the adjusting cylinder. The two ends of the adjusting hinge rod are rotatably connected to the end of the piston rod extending out of the adjusting cylinder and the end of the adjusting lever, respectively. The swing pipe passes through the swing support rod. One end of the swing pipe extends out of the swing support rod via the swing shaft. The other end of the swing pipe extends out of the swing support rod and connects to the end of the adjusting cylinder away from the adjusting lever. The fixed pipe is fixedly installed on the sliding plate. One end of the fixed pipe passes through the sliding plate and connects to the annular cavity. The other end of the fixed pipe passes through the sliding plate and rotatably connects to the end of the swing pipe extending out of the swing shaft. One end of the wire rope is fixedly installed on the adjusting push ring. The other end of the wire rope passes through the fixed pipe and the swing pipe in sequence and extends into the adjusting cylinder and is fixedly connected to the piston. A spring is provided between the side of the piston away from the piston rod and the inner wall of the adjusting cylinder.

[0007] Preferably, the self-opening collection mechanism includes a collection bracket, a self-opening pushing member, and a collection cylinder. The collection bracket is mounted on a fixed base and has a placement groove. The collection cylinder is placed in the placement groove and has a hollow upper wall. The self-opening pushing member is mounted on the side wall of the collection bracket and is arranged in a circumferential array around the axis of the placement groove.

[0008] Preferably, a switching mechanism is provided between the opening and closing sampling bracket and the measuring rod. The switching mechanism includes a switching motor, an active dial, and a driven grooved wheel. The bottom end of the measuring rod has a switching cavity. The active dial and the driven grooved wheel are rotatably disposed in the switching cavity. The switching motor is fixedly installed in the switching cavity. The output shaft of the switching motor is coaxially fixedly connected to the active dial. The driven grooved wheel is coaxially fixedly connected to the fixed plate. The driven grooved wheel has radial grooves equidistantly spaced along the circumference. The radial grooves correspond one-to-one with the swing support rod. A lever is provided on the side wall of the active dial. A lever shaft is provided on the lever. The active dial is close to... A fan-shaped clearance groove is provided on one side of the dial shaft. The driven groove wheel has multiple arc-shaped anti-rotation grooves equidistantly spaced along the circumference. The arc-shaped anti-rotation grooves are distributed alternately with the radial grooves. The length from the axis of the arc-shaped anti-rotation groove to the axis of the driven groove wheel is equal to the length from the axis of the active dial to the axis of the driven groove wheel. When the active dial rotates, the dial shaft intermittently enters the radial groove and drives the driven groove wheel to rotate, thereby realizing the switching of the position of the remote-controlled horizontal sampler. The arc-shaped anti-rotation groove cooperates with the outer edge of the active dial to keep the driven groove wheel stable and stationary when the dial shaft rotates out of the radial groove. The fan-shaped clearance groove provides the clearance space required for the movement of the dial shaft.

[0009] The reversing mechanism includes a reversing base, a reversing motor, a rotary seat, a vertical support, and a horizontal support. The reversing base is fixedly installed on a fixed base and has a reversing cavity inside. The reversing motor is fixedly installed inside the reversing cavity. The rotary seat is rotatably mounted on the upper wall of the reversing base. The output end of the reversing motor is coaxially connected to the rotary seat. The vertical support is fixedly installed on both sides of the rotary seat. The horizontal support is horizontally fixedly installed at the top of the vertical support. The lifting mechanism is located at the end of the horizontal support, and the measuring rod is fixedly installed at the end of the horizontal support.

[0010] Preferably, the measuring rod includes an inner rod and multiple sets of sleeves that slide sequentially from the inside out on the outer side of the inner rod. The outermost sleeve is fixedly installed on the end of the horizontal support away from the vertical support. The lifting mechanism includes a mounting bracket, a winding and unwinding machine, a winding and unwinding shaft, and a lifting rope. The mounting bracket is mounted on the horizontal support, the winding and unwinding shaft is rotatably mounted on the mounting bracket, the winding and unwinding machine is fixedly mounted on the mounting bracket, and the output shaft of the winding and unwinding machine is coaxially connected to the winding and unwinding shaft. One end of the lifting rope slides through the upper wall of the multiple sets of sleeves and is fixedly connected to the upper end of the inner rod. The other end of the lifting rope is wound onto the winding and unwinding shaft and its end is fixedly connected to the winding and unwinding shaft.

[0011] As a further improvement to this solution, the top of the measuring rod is provided with a guide assembly, which includes a guide roller shaft, a guide ring, and an L-shaped guide bracket. The guide bracket is fixedly installed on the top of the measuring rod. A guide hole is opened on the upper wall of the sleeve. The guide ring is located on the guide bracket. An opening coaxial with the guide ring is opened at the bottom of the guide bracket. The guide ring and the guide hole are coaxial. The guide roller shaft is rotatably located at the upper end of the guide bracket. The lifting rope passes around the guide roller shaft and slides into the inside of the sleeve through the guide ring, the opening, and the guide hole, and is fixedly connected to the inner rod.

[0012] Preferably, a depth measuring assembly is provided between the guide ring and the guide hole. The depth measuring assembly includes a depth measuring wheel, a photoelectric encoder, and a depth measuring cavity that runs vertically through the cavity. The depth measuring wheel is symmetrically rotatably disposed within the depth measuring cavity. The photoelectric encoder is disposed on the side wall of the depth measuring cavity. The axle of the depth measuring wheel is coaxially connected to the photoelectric code disk of the photoelectric encoder. The lifting rope passes through the depth measuring cavity and between the two symmetrically arranged depth measuring wheels. The depth measuring wheel has an arc-shaped groove along its circumference. The two sides of the lifting rope are in close contact with the inner wall of the arc-shaped groove. Anti-slip protrusions are evenly distributed along the circumference of the inner wall of the arc-shaped groove to enhance the frictional transmission stability between the lifting rope and the depth measuring wheel. When the lifting rope is driven to move up and down, the static friction between the inner wall of the arc-shaped groove of the two depth measuring wheels and the lifting rope forces the two depth measuring wheels to rotate. The depth measuring wheel drives the photoelectric code disk of the photoelectric encoder to rotate. The photoelectric encoder detects the rotation angle of the depth measuring wheel and calculates the length of the lifting rope by signal processing.

[0013] Preferably, the transverse support includes a fixed frame and a sliding frame slidably disposed at the end of the fixed frame. A transverse electric actuator is provided between the fixed frame and the sliding frame. The transverse electric actuator facilitates the sliding frame to slide along the fixed frame to adjust the length of the transverse support. When the transverse electric actuator is fully retracted, the length from the self-opening collection mechanism to the reversing mechanism is equal to the length from the opening and closing sampling bracket to the reversing mechanism. Therefore, when the reversing mechanism drives the opening and closing sampling bracket to rotate, it can drive the opening and closing sampling bracket to rotate above the self-opening collection mechanism. Preferably, a controller is provided on the side wall of the reversing base, and an angle sensor is provided between the rotary table and the reversing base. The controller is electrically connected to the angle sensor, the photoelectric encoder, and the reversing motor respectively. The rotation angle of the rotary table can be detected by the angle sensor, thereby facilitating the control of the position of the transverse support and the opening and closing sampling support at the end of the transverse support.

[0014] Preferably, the self-opening pusher includes a mounting rod and an arc-shaped component, the mounting rod being symmetrically arranged on the side wall of the arc-shaped component, and the end of the mounting rod being mounted on the collecting bracket.

[0015] As a further improvement to this solution, the side wall of the collecting bracket is circumferentially arrayed with threaded mounting grooves, and the end of the mounting rod is provided with a positioning bolt that matches the threaded mounting groove. The positioning bolt and the threaded mounting groove facilitate the disassembly of the self-opening push-moving component.

[0016] Preferably, the reversing base sidewall is provided with a control panel, the controller is located in the control panel, and the control panel is electrically connected to the remote-controlled horizontal sampler, the opening and closing electric actuator, the adjusting electric actuator, the switching motor, the reversing motor, the winding discharge machine, and the horizontal electric actuator.

[0017] Furthermore, the swing support rod includes a support rod body and an L-shaped swing frame. One end of the support rod body is rotatably connected to a hinge seat on the side wall of the sliding disk via a swing shaft. The swing frame is located at the other end of the support rod body. The mounting frame includes a fixed seat, a bidirectional screw, a guide rod, and symmetrically arranged mounting plates. The rotating shaft is fixedly mounted on the upper wall of the fixed seat, and the fixed seat is rotatably mounted at the end of the swing frame via the rotating shaft. The bidirectional screw rotatably passes through the fixed seat, and the guide rod is fixedly passed through the fixed seat. The bidirectional screw and the guide rod are arranged parallel to each other. The two ends of the bidirectional screw are provided with threads in opposite directions. The mounting plates slide through the bidirectional screw and the guide rod. The mounting plates are symmetrically arranged on both sides of the fixed seat, and the symmetrically arranged mounting plates are threadedly engaged with the two ends of the bidirectional screw. The mounting plates are provided with mounting holes, and mounting bolts adapted to the remote-controlled horizontal sampler are provided in the mounting holes.

[0018] The beneficial effects achieved by the present invention using the above structure are as follows: 1. To address the technical problem of inconvenience in repeated sampling at the same measurement point in existing technologies, an openable sampling bracket combined with a switching mechanism that rotates at equal angles is used to achieve cyclical repeated sampling at the same point, thereby achieving the technical effect of multiple repeated samplings at the same point in a single water immersion.

[0019] 2. By driving multiple driven adjustment components through the active adjustment component, the opening direction of multiple remote-controlled horizontal samplers can be adjusted synchronously, so that the included angle between the multiple remote-controlled horizontal samplers and the corresponding swing support rod is equal. Thus, the opening direction of the remote-controlled horizontal samplers rotated to the sampling position remains the same, which makes it convenient to adjust the direction of the remote-controlled horizontal samplers according to the water flow direction.

[0020] 3. A self-opening collection mechanism is set up. With the help of the self-opening pusher, when the opening and closing sampling bracket moves the remote-controlled horizontal sampler downward, the self-opening pusher will open the cylinder cover of the remote-controlled horizontal sampler, so that the water samples in multiple remote-controlled horizontal samplers can be poured out and mixed at the same time, without the need for manual opening of the cover for sampling.

[0021] 4. The self-opening pusher is made detachable, so that the number of remote-controlled horizontal samplers that can be opened at the same time can be adjusted as needed, which facilitates layered sampling at multiple depths on the same vertical line. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a device for measuring the sediment content of Yellow River water samples provided by the present invention; Figure 2 A side view of the opening and closing sampling bracket, the adjustment mechanism, and the remote-controlled horizontal sampler provided by the present invention; Figure 3 A schematic diagram of the combined structure of the opening and closing sampling bracket, the adjustment mechanism, and the remote-controlled horizontal sampler provided by the present invention; Figure 4 A schematic diagram of the unfolded state of the openable sampling bracket provided by the present invention; Figure 5 A schematic diagram of the combined structure of the active adjustment component, the sliding cylinder, and the sliding disk provided by the present invention; Figure 6 A schematic diagram of the combined structure of the swing support rod, the driven adjustment component and the mounting bracket provided by the present invention; Figure 7 A cross-sectional view of the swing support rod, driven adjustment assembly, and mounting bracket provided by the present invention; Figure 8 This is a schematic diagram of the structure of the depth sounding component provided by the present invention; Figure 9 A schematic diagram of the combined structure of the reversing mechanism, lifting mechanism and measuring rod provided by the present invention; Figure 10 A schematic diagram of the combined structure of the guide component, depth measuring component, and measuring rod provided by the present invention; Figure 11 A cross-sectional view of the guide assembly, depth measuring assembly, and measuring rod provided by the present invention; Figure 12 A cross-sectional view of the reversing mechanism provided by the present invention; Figure 13 A schematic diagram of the self-opening collection mechanism provided by the present invention; Figure 14 This is a schematic diagram of the structure of the self-opening pusher provided by the present invention; Figure 15 A schematic diagram of the switching mechanism provided by the present invention; Figure 16 This is a schematic diagram of the mounting bracket provided by the present invention.

[0023] Among them, 1. Fixed base, 2. Reversing mechanism, 3. Lifting mechanism, 4. Measuring rod, 5. Opening and closing sampling bracket, 6. Self-opening collection mechanism, 7. Fixed plate, 8. Sliding cylinder, 9. Opening and closing electric push rod, 10. Opening and closing pull rod, 11. Swinging support rod, 12. Sliding plate, 13. Hinge seat, 14. Swing shaft, 15. Mounting bracket, 16. Remote control horizontal sampler, 17. Orientation mechanism, 18. Driven adjustment component, 19. Active adjustment component, 20. Ring 21. Cavity; 22. Adjusting push ring; 23. Adjusting electric push rod; 24. Fixed pipeline; 25. Swing pipeline; 26. Adjusting cylinder; 27. Piston rod; 28. Adjusting hinge rod; 29. ​​Adjusting cavity; 30. Rotating shaft; 31. Adjusting swing rod; 32. Collection bracket; 33. Self-opening pusher; 34. Collection cylinder; 35. Placement slot; 36. Switching mechanism; 37. Switching motor; 38. Active dial; 39. Driven grooved wheel; 40. Mounting hole; 4 1. Radial groove; 42. Toggle lever; 43. Toggle shaft; 44. Fan-shaped clearance groove; 45. Arc-shaped anti-rotation groove; 46. Reversing base; 47. Reversing motor; 48. Rotary seat; 49. Vertical support; 50. Horizontal support; 51. Inner rod; 52. Sleeve; 53. Mounting bracket; 54. Winding and unwinding machine; 55. Winding and unwinding shaft; 56. Lifting rope; 57. Guide assembly; 58. Guide roller shaft; 59. Guide ring; 60. Guide bracket; 61. Guide hole; 62. 63. Depth measuring component; 64. Depth measuring wheel; 65. Photoelectric encoder; 66. Depth measuring cavity; 67. Arc groove; 68. Anti-slip protrusion; 69. Fixing bracket; 70. Sliding bracket; 71. Lateral electric actuator; 72. Control panel; 73. Angle sensor; 74. Mounting rod; 75. Arc-shaped component; 76. Threaded mounting groove; 77. Positioning bolt; 78. Steel wire rope; 79. Spring; 80. Fixing base; 81. Bidirectional screw; 82. Guide rod; 83. Mounting plate.

[0024] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0026] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0027] like Figures 1-16 As shown, the present invention provides a device for measuring the sediment content of Yellow River water samples, comprising a fixed base 1, a reversing mechanism 2, a lifting mechanism 3, a measuring rod 4, and an opening / closing sampling bracket 5. The reversing mechanism 2 is located above the fixed base 1, the lifting mechanism 3 is located on the reversing mechanism 2, the measuring rod 4 is located on the reversing mechanism 2 and connected to the lifting mechanism 3, and the opening / closing sampling bracket 5 is installed at the bottom end of the measuring rod 4. The fixed base 1 is provided with a self-opening collection mechanism 6. The opening / closing sampling bracket 5 includes a fixed disk 7, a sliding cylinder 8, an opening / closing electric push rod 9, an opening / closing pull rod 10, and a swing support rod 11. The fixed disk 7 is located below the measuring rod 4, and the fixed disk 7, the opening / closing electric push rod 9, and the sliding cylinder 8 are connected sequentially from top to bottom. A sliding disk 12 is fixedly sleeved on the upper end of the fixed disk 7. The circumferential sidewall of the fixed disk 7 and the circumferential sidewall of the sliding disk 12 are respectively provided with hinge seats 13 at equal intervals. One end of the swing support rod 11 is fixedly connected with a swing shaft 14. The swing shaft 14 is rotatably connected to the hinge seat 13 on the sidewall of the sliding disk 12. The two ends of the opening and closing pull rod 10 are respectively rotatably connected to the hinge seat 13 on the sidewall of the fixed disk 7 and the swing support rod 11. The end of the swing support rod 11 is rotatably provided with a mounting frame 15. A remote-controlled horizontal sampler 16 is installed in the mounting frame 15. The remote-controlled horizontal sampler 16 is existing technology and will not be described in detail here. The opening and closing sampling bracket 5 is provided with a direction adjustment mechanism 17 that drives the mounting frame 15 to rotate, so as to adjust the direction of the remote-controlled horizontal sampler 16.

[0028] like Figure 1 , Figure 9 and Figure 12 As shown, the reversing mechanism 2 includes a reversing base 46, a reversing motor 47, a rotating seat 48, a vertical support 49, and a horizontal support 50. The reversing base 46 is fixedly installed on the fixed base 1. The reversing base 46 has a reversing cavity. The reversing motor 47 is fixedly installed in the reversing cavity. The rotating seat 48 is rotatably mounted on the upper wall of the reversing base 46. The output end of the reversing motor 47 is coaxially connected to the rotating seat 48. The vertical support 49 is fixedly mounted on both sides of the rotating seat 48. The horizontal support 50 is horizontally fixedly mounted on the top of the vertical support 49. The lifting mechanism 3 is located at the end of the horizontal support 50. The measuring rod 4 is fixedly installed at the end of the horizontal support 50.

[0029] like Figures 9-11 As shown, the measuring rod 4 includes an inner rod 51 and multiple sets of sleeves 52 that are slidably fitted onto the outer side of the inner rod 51 from the inside out. The outermost sleeve 52 is fixedly installed on the end of the horizontal support 50 away from the vertical support 49. The lifting mechanism 3 includes a mounting bracket 53, a winding and unwinding machine 54, a winding and unwinding shaft 55, and a lifting rope 56. The mounting bracket 53 is mounted on the horizontal support 50. The winding and unwinding shaft 55 is rotatably mounted on the mounting bracket 53. The winding and unwinding machine 54 is fixedly mounted on the mounting bracket 53. The output shaft of the winding and unwinding machine 54 is coaxially connected to the winding and unwinding shaft 55. One end of the lifting rope 56 slides through the upper wall of the multiple sets of sleeves 52 and is fixedly connected to the upper end of the inner rod 51. The other end of the lifting rope 56 is wound onto the winding and unwinding shaft 55 and its end is fixedly connected to the winding and unwinding shaft 55.

[0030] The transverse support 50 includes a fixed frame 68 and a sliding frame 69 slidably disposed at the end of the fixed frame 68. A transverse electric push rod 70 is provided between the fixed frame 68 and the sliding frame 69. The transverse electric push rod 70 facilitates the sliding frame 69 to slide along the fixed frame 68 to adjust the length of the transverse support 50.

[0031] like Figures 2-7 and Figure 16As shown, the steering mechanism 17 includes a driven adjustment assembly 18 mounted on each swing support rod 11 and an active adjustment assembly 19 mounted at the bottom of the sliding disk 12. The active adjustment assembly 19 includes an annular cavity 20, an adjustment push ring 21, and an adjustment electric push rod 22. The annular cavity 20 is coaxially sleeved on the outside of the sliding cylinder 8. The adjustment electric push rod 22 is mounted on the bottom wall of the annular cavity 20. The adjustment push ring 21 is coaxially slidably mounted inside the annular cavity 20 and is positioned above the adjustment electric push rod 22. The driven adjustment assembly 18 includes a wire rope 77 and a fixed pipeline. 23. A swing pipe 24, an adjusting cylinder 25, a piston 26, a piston rod 27, and an adjusting hinge rod 28. The swing support rod 11 has an adjusting cavity 29. A rotating shaft 30 is fixedly connected to the upper wall of the mounting bracket 15. The mounting bracket 15 is rotatably connected to the end of the swing support rod 11 via the rotating shaft 30. The end of the rotating shaft 30 rotatably passes through the swing support rod 11 and extends into the adjusting cavity 29. An adjusting swing rod 31 is fixedly connected to the end of the rotating shaft 30. The adjusting cylinder 25 is located within the adjusting cavity 29. The piston 26 is slidably sealed within the adjusting cylinder 25. One end of the piston rod 27 is fixedly installed on the side of the piston 26 near the adjusting rocker arm 31. The other end of the piston rod 27 slides through the side wall of the adjusting cylinder 25 and extends out of the adjusting cylinder 25. The two ends of the adjusting hinge rod 28 are rotatably connected to the end of the piston rod 27 extending out of the adjusting cylinder 25 and the end of the adjusting rocker arm 31, respectively. The swing pipe 24 passes through the swing support rod 11. One end of the swing pipe 24 extends out of the swing support rod 11 via the swing shaft 14, and the other end of the swing pipe 24 extends out of the swing support rod 11 and communicates with the end of the adjusting cylinder 25 away from the adjusting rocker arm 31. The fixed pipe 23 is fixedly mounted on the sliding plate 12. One end of the fixed pipe 23 passes through the sliding plate 12 and communicates with the annular cavity 20. The other end of the fixed pipe 23 passes through the sliding plate 12 and is rotatably connected to the end of the swing pipe 24 that extends out of the swing shaft 14. One end of the wire rope 77 is fixedly mounted on the adjusting push ring 21. The other end of the wire rope 77 passes through the fixed pipe 23 and the swing pipe 24 in sequence and extends into the adjusting cylinder 25 and is fixedly connected to the piston 26. A spring 78 is provided between the side of the piston 26 away from the piston rod 27 and the inner wall of the adjusting cylinder 25.

[0032] The swing support rod 11 includes a support rod body and an L-shaped swing frame. One end of the support rod body is rotatably connected to a hinge seat 13 on the side wall of the sliding disk 12 via a swing shaft 14. The swing frame is located at the other end of the support rod body. The mounting frame 15 includes a fixed base 79, a bidirectional screw 80, a guide rod 81, and symmetrically arranged mounting plates 82. The rotating shaft 30 is fixedly mounted on the upper wall of the fixed base 79. The fixed base 79 is rotatably mounted at the end of the swing frame via the rotating shaft 30. The bidirectional screw 80 rotatably passes through the fixed base 79. The guide rod 81 is fixedly inserted through the fixing seat 79. The bidirectional screw 80 is arranged parallel to the guide rod 81. The two ends of the bidirectional screw 80 are provided with threaded portions with opposite directions. The mounting plate 82 slides through the bidirectional screw 80 and the guide rod 81. The mounting plate 82 is symmetrically arranged on both sides of the fixing seat 79. The symmetrically arranged mounting plates 82 are respectively threaded with the two ends of the bidirectional screw 80. The mounting plate 82 is provided with mounting holes 40. The mounting holes 40 are provided with mounting bolts adapted to the remote-controlled horizontal sampler 16.

[0033] like Figure 1 , Figure 13 and Figure 14 As shown, the self-opening collection mechanism 6 includes a collection bracket 32, a self-opening pusher 33, and a collection cylinder 34. The collection bracket 32 ​​is mounted on a fixed base 1 and has a placement groove 35. The collection cylinder 34 is placed in the placement groove 35 and has a hollow upper wall. The self-opening pusher 33 is installed on the inner side wall of the collection bracket 32 ​​and is arranged in a circular array around the axis of the placement groove 35.

[0034] The self-opening pusher 33 includes a mounting rod 73 and an arc-shaped member 74. The mounting rod 73 is symmetrically arranged on the side wall of the arc-shaped member 74, and the end of the mounting rod 73 is mounted on the collecting bracket 32.

[0035] The side wall of the collecting bracket 32 ​​is circumferentially arrayed with threaded mounting grooves 75, and the end of the mounting rod 73 is provided with a positioning bolt 76 that is adapted to the threaded mounting groove 75. The positioning bolt 76 and the threaded mounting groove 75 facilitate the disassembly of the self-opening pusher 33.

[0036] like Figure 1 , Figure 2 and Figure 15As shown, a switching mechanism 36 is provided between the opening and closing sampling bracket 5 and the measuring rod 4. The switching mechanism 36 includes a switching motor 37, an active dial 38, and a driven grooved wheel 39. The bottom end of the measuring rod 4 is provided with a switching cavity. The active dial 38 and the driven grooved wheel 39 are rotatably disposed in the switching cavity. The switching motor 37 is fixedly installed in the switching cavity. The output shaft of the switching motor 37 is coaxially fixedly connected to the active dial 38. The driven grooved wheel 39 is coaxially fixedly connected to the fixed disk 7. The driven grooved wheel 39 has radial grooves 41 equidistantly opened along the circumference. The radial grooves 41 correspond one-to-one with the swing support rod 11. The side wall of the active dial 38 is provided with a lever 42. The lever 42 is provided with a lever shaft 43. The active dial 38 is close to A fan-shaped clearance groove 44 is provided on one side of the dial shaft 43. The driven groove wheel 39 has multiple arc-shaped anti-rotation grooves 45 evenly spaced along the circumference. The arc-shaped anti-rotation grooves 45 are distributed alternately with the radial grooves 41. The length from the axis of the arc-shaped anti-rotation groove 45 to the axis of the driven groove wheel 39 is equal to the length from the axis of the active dial 38 to the axis of the driven groove wheel 39. When the active dial 38 rotates, the dial shaft 43 intermittently enters the radial groove 41 and drives the driven groove wheel 39 to rotate, realizing the switching of the position of the remote-controlled horizontal sampler 16. The arc-shaped anti-rotation groove 45 cooperates with the outer edge of the active dial 38. When the dial shaft 43 rotates out of the radial groove 41, it keeps the driven groove wheel 39 stable and stationary. The fan-shaped clearance groove 44 provides the clearance space required for the movement of the dial shaft 43.

[0037] like Figures 9-11 As shown, the top end of the measuring rod 4 is provided with a guide assembly 57. The guide assembly 57 includes a guide roller shaft 58, a guide ring 59, and an L-shaped guide bracket 60. The guide bracket 60 is fixedly installed on the top end of the measuring rod 4. The upper wall of the sleeve 52 is provided with a guide hole 61. The guide ring 59 is provided on the guide bracket 60. The bottom of the guide bracket 60 is provided with an opening coaxial with the guide ring 59. The guide ring 59 and the guide hole 61 are coaxial. The guide roller shaft 58 is rotatably located at the upper end of the guide bracket 60. The lifting rope 56 passes around the guide roller shaft 58 and slides into the sleeve 52 through the guide ring 59, the opening, and the guide hole 61, and is fixedly connected to the inner rod 51.

[0038] A depth measuring assembly 62 is provided between the guide ring 59 and the guide hole 61. The depth measuring assembly 62 includes a depth measuring wheel 63, a photoelectric encoder 64, and a depth measuring cavity 65 that extends vertically. The depth measuring wheel 63 is symmetrically rotatably disposed within the depth measuring cavity 65. The photoelectric encoder 64 is disposed on the side wall of the depth measuring cavity 65. The axle of the depth measuring wheel 63 is coaxially connected to the photoelectric code disk of the photoelectric encoder 64. The lifting rope 56 passes through the depth measuring cavity 65 and between the two symmetrically arranged depth measuring wheels 63. The depth measuring wheel 63 has an arc-shaped groove 66 along its circumference. The two sides are tightly fitted to the inner wall of the arc-shaped groove 66. The inner wall of the arc-shaped groove 66 has anti-slip protrusions 67 evenly distributed along the circumference to enhance the friction transmission stability between the lifting rope 56 and the depth measuring wheel 63. When the lifting rope 56 is driven to move up and down, the static friction between the inner wall of the arc-shaped groove 66 of the two depth measuring wheels 63 and the lifting rope 56 forces the two depth measuring wheels 63 to rotate. The depth measuring wheels 63 drive the photoelectric code disk of the photoelectric encoder 64 to rotate. The photoelectric encoder 64 detects the rotation angle of the depth measuring wheel 63 and calculates the length of the lifting rope 56 through signal processing.

[0039] like Figure 1 , Figure 2 , Figure 5 , Figures 9-15 As shown, a controller is provided on the side wall of the reversing base 46, and an angle sensor 72 is provided between the rotary seat 48 and the reversing base 46. The controller is electrically connected to the angle sensor 72, the photoelectric encoder 64, and the reversing motor 47 respectively. The rotation angle of the rotary seat 48 can be detected by the angle sensor 72, which facilitates the control of the position of the transverse support 50 and the opening and closing sampling bracket 5 at the end of the transverse support 50.

[0040] The reversing base 46 has a control panel 71 on its side wall. The controller is located in the control panel 71. The control panel 71 is electrically connected to the remote control horizontal sampler 16, the opening and closing electric push rod 9, the adjusting electric push rod 22, the switching motor 37, the reversing motor 47, the winding and discharging machine 54, and the horizontal electric push rod 70.

[0041] In practical use, the device is first fixed to the shore or hydrological vessel using the fixed base 1. Then, the remote-controlled horizontal sampler 16 is fixedly installed on the mounting frame 15. Initially, the opening and closing sampling bracket 5 is located above the self-opening collection mechanism 6, and each swing support rod 11 is in a vertical state. The remote-controlled horizontal sampler 16 is placed between two symmetrically arranged mounting plates 82. Then, the double-ended screw 80 is turned, which drives the two symmetrically arranged mounting plates 82 to move towards each other and close to the remote-controlled horizontal sampler 16. Then, the mounting bolts are inserted into the mounting holes 40 and the remote-controlled horizontal sampler 16 to achieve fixed installation of the remote-controlled horizontal sampler 16 and the mounting frame 15. Each swing support rod 11 is equipped with one remote-controlled horizontal sampler 16. Installation is complete. Then, each remote-controlled horizontal sampler 16 is opened, and the reversing mechanism 2 is activated via the control panel 71. The reversing motor 47 drives the vertical support 49 and the horizontal support 50 to rotate via the rotary seat 48, thereby causing the opening and closing sampling bracket 5 at the end of the horizontal support 50 to rotate away from the self-opening collection mechanism 6, i.e., above the Yellow River. Then, the horizontal electric push rod 70 is extended via the control panel 71. The horizontal electric push rod 70 drives the sliding frame 69 to slide along the fixed frame 68 to adjust the length of the horizontal support 50. When the horizontal support 50 extends above the point to be measured, the horizontal electric push rod 70 is stopped from extending. Then, the opening and closing electric push rod 9 is extended. The opening and closing electric push rod 9 drives the sliding cylinder 8 and the sliding disk 12 to move downward, increasing the distance between the sliding disk 12 and the fixed disk 7, thereby... The opening and closing lever 10 causes the swing support rod 11 to rotate upward and outward, switching the swing support rod 11 and the remote-controlled horizontal sampler 16 from a vertical to a horizontal state. The position of one of the remote-controlled horizontal samplers 16 is designated as the sampling position. Then, according to the direction of the Yellow River flow, the adjusting electric push rod 22 is activated. The adjusting electric push rod 22 retracts, causing the adjusting push ring 21 to move downward. The adjusting push ring 21 drives multiple sets of steel wire ropes 77 to pull the piston 26, causing the piston 26 to slide away from the rotating shaft 30, overcoming the elastic force of the spring 78. The piston 26 drives the piston rod 27 to move away from the rotating shaft 30. The piston rod 27 pulls the adjusting swing rod 31 through the adjusting hinge rod 28. The adjusting swing rod 31 drives the mounting bracket 15 to rotate through the rotating shaft 30, thereby adjusting the remote-controlled horizontal sampler 16. The opening direction of the remote-controlled horizontal sampler 16 at sampling position is aligned with the direction of water flow, facilitating accurate sampling. Then, the lifting mechanism 3 is activated, and the winding and unwinding motor 54 drives the winding and unwinding shaft 55 to unwind the lifting rope 56. Under gravity, the inner rod 51 slides down, driving the multi-stage sleeve 52 to slide down sequentially. When the remote-controlled horizontal sampler 16 is in contact with the Yellow River surface, the depth sounding component 62 is activated. As the lifting rope 56 unwinds, the static friction between the inner walls of the arc-shaped grooves 66 of the two depth sounding wheels 63 and the lifting rope 56 forces the two depth sounding wheels 63 to rotate. The depth sounding wheels 63 drive the photoelectric encoder 64 to rotate. The photoelectric encoder 64 detects the rotation angle of the depth sounding wheels 63 and calculates the winding and unwinding length of the lifting rope 56 through signal processing.This facilitates determining the sinking depth of the remote-controlled horizontal sampler 16. When the remote-controlled horizontal sampler 16 moves down to the sampling depth, the control roll-to-discharge motor 54 stops working. After a period of stillness, the remote-controlled horizontal sampler 16 at the sampling position is triggered by the control panel 71 to quickly close and perform sampling. Then, the switching motor 37 is started, driving the active dial 38 to rotate one revolution. When the active dial 38 rotates, it drives the dial shaft 43 into the radial groove 41 and drives the driven groove wheel 39 to rotate. The driven groove wheel 39 drives the radial groove 41 to rotate to the next radial groove 41, thereby rotating the next unsampled remote-controlled horizontal sampler 16 to the sampling position. After a period of stillness, the remote-controlled horizontal sampler 16 at the sampling position is triggered by the control panel 71. The horizontal sampler 16 closes quickly for repeated sampling, enabling multiple samplings of the same measurement point. After multiple samplings, the control winding and unwinding machine 54 drives the winding and unwinding shaft 55 to reverse, thereby driving the lifting rope 56 to wind up. The lifting rope 56 drives the inner rod 51 to move upward, causing the measuring rod 4 to retract, which in turn drives the opening and closing sampling bracket 5 and the remote-controlled horizontal sampler 16 to move upward and reset, completing the sampling. Then, the control adjusts the electric push rod 22 to extend, which drives the adjusting push ring 21 to move upward. The spring 78 pushes the piston 26 to slide closer to the rotating shaft 30, thereby tightening the wire rope 77. The piston 26 pushes the piston rod 27 to move towards the rotating shaft 30. The piston rod 27 is adjusted by the hinge rod 2. 8. Push the adjusting lever 31. The adjusting lever 31 drives the mounting bracket 15 to rotate via the rotating shaft 30, thereby causing the remote-controlled horizontal sampler 16 to rotate and reset. Then, control the opening and closing electric push rod 9 to retract. The opening and closing electric push rod 9 drives the sliding cylinder 8 and the sliding disk 12 to move upward. The distance between the sliding disk 12 and the fixed disk 7 decreases, thereby causing the opening and closing pull rod 10 to drive the swing support rod 11 to rotate downward and inward. This causes the swing support rod 11 and the remote-controlled horizontal sampler 16 to switch from a horizontal state to a vertical state. At this time, the opening and closing sampling bracket 5 is in a retracted state. Then, start the reversing mechanism 2. The reversing motor 47 drives the vertical bracket 49 and the horizontal bracket 50 to rotate in the opposite direction and reset via the rotating seat 48, thereby driving the horizontal bracket 49 to rotate and reset. The opening and closing sampling bracket 5 at the end of the frame 50 rotates to be directly above the self-opening collection mechanism 6. Then, the winding and unwinding machine 54 is controlled again to drive the winding and unwinding shaft 55 to unwind the lifting rope 56, causing the opening and closing sampling bracket 5 and the remote-controlled horizontal sampler 16 to move down close to the self-opening pusher 33. As the remote-controlled horizontal sampler 16 moves down, the lower end of the cylinder cover of the remote-controlled horizontal sampler 16 contacts the self-opening pusher 33. As the remote-controlled horizontal sampler 16 continues to move down, the self-opening pusher 33 pushes the cylinder covers of multiple sets of remote-controlled horizontal samplers 16 to open simultaneously, allowing the water samples collected in multiple sets of remote-controlled horizontal samplers 16 to fall into the collection cylinder 34 for mixing. This allows for multiple repeated sampling and mixing at the same measurement point.

[0042] If sampling is required at different depths along the same vertical line, each depth measurement point needs to be tested twice. In this embodiment, the opening and closing sampling bracket 5 is equipped with four sets of swing rods 11, retaining two sets of adjacent self-opening pushers 33, and removing the remaining self-opening pushers 33 from the collection bracket 32. During sampling, the above operation is performed twice at the first depth, and the above operation is performed twice again at the second depth along the same vertical line. Then, when opening the cover of the remote-controlled horizontal sampler 16, the two sets of remote-controlled horizontal samplers 16 used for the first sampling are first aligned with the two self-opening pushers 33, and then the opening and closing sampling is controlled by the lifting mechanism 3. The sample holder 5 and the remote-controlled horizontal sampler 16 move downwards, causing the caps of the two sets of remote-controlled horizontal samplers 16 for the first sampling to be pushed open by the self-opening pusher 33, completing the collection of the first water sample. Then, the collection tube 34 is replaced, and the opening and closing sampling holder 5 is rotated 180° by the switching mechanism 36, so that the two sets of remote-controlled horizontal samplers 16 for the second sampling are aligned with the two self-opening pushers 33. Then, the opening and closing sampling holder 5 and the remote-controlled horizontal sampler 16 are controlled to move downwards by the lifting mechanism 3, so that the caps of the two sets of remote-controlled horizontal samplers 16 for the second sampling are pushed open by the self-opening pusher 33, completing the collection of the second water sample.

[0043] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

[0045] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A device for measuring the sediment content of Yellow River water samples, characterized in that: The system includes a fixed base, a reversing mechanism, a lifting mechanism, a measuring rod, and an opening / closing sampling bracket. The reversing mechanism is located above the fixed base, the lifting mechanism is mounted on the reversing mechanism, and the measuring rod is mounted on the reversing mechanism and connected to the lifting mechanism. The opening / closing sampling bracket is installed at the bottom end of the measuring rod. The fixed base is equipped with a self-opening collection mechanism. The opening / closing sampling bracket includes a fixed plate, a sliding cylinder, an opening / closing electric push rod, an opening / closing pull rod, and a swing support rod. The fixed plate is located below the measuring rod. The cylinders are connected sequentially from top to bottom. A sliding disk is fixedly sleeved on the upper end of the sliding cylinder. The circumferential sidewall of the fixed disk and the circumferential sidewall of the sliding disk are respectively provided with hinge seats at equal intervals. One end of the swing support rod is fixedly connected with a swing shaft, which is rotatably connected to the hinge seat on the sidewall of the sliding disk. The two ends of the opening and closing pull rod are respectively rotatably connected to the hinge seat on the sidewall of the fixed disk and the swing support rod. The end of the swing support rod is rotatably provided with a mounting frame. A remote-controlled horizontal sampler is installed in the mounting frame. The opening and closing sampling bracket is provided with a steering mechanism that drives the mounting frame to rotate. The steering mechanism includes a driven adjustment assembly mounted on each swing support rod and an active adjustment assembly mounted at the bottom of the sliding plate. The active adjustment assembly includes an annular cavity, an adjustment push ring, and an adjustment electric push rod. The annular cavity is coaxially sleeved on the outside of the sliding cylinder. The adjustment electric push rod is located on the bottom wall of the annular cavity. The adjustment push ring is coaxially slidably mounted within the annular cavity and positioned above the adjustment electric push rod. The driven adjustment assembly includes a wire rope, a fixed pipeline, a swing pipeline, an adjustment cylinder, a piston, a piston rod, and an adjustment hinge rod. Each swing support rod has an adjustment cavity. A rotating shaft is fixedly connected to the upper wall of the mounting frame. The mounting frame is rotatably connected to the end of the swing support rod via the rotating shaft. The end of the rotating shaft rotatably passes through the swing support rod and extends into the adjustment cavity. An adjustment swing rod is fixedly connected to the end of the rotating shaft. The adjustment cylinder is located within the adjustment cavity. The piston is slidably sealed within the adjustment cylinder. The piston rod... One end of the piston rod is fixedly installed on the side of the piston near the adjusting lever. The other end of the piston rod slides through the side wall of the adjusting cylinder and extends out of the adjusting cylinder. The two ends of the adjusting hinge rod are rotatably connected to the end of the piston rod extending out of the adjusting cylinder and the end of the adjusting lever, respectively. The swing pipe passes through the swing support rod. One end of the swing pipe extends out of the swing support rod via the swing shaft. The other end of the swing pipe extends out of the swing support rod and connects to the end of the adjusting cylinder away from the adjusting lever. The fixed pipe is fixedly installed on the sliding plate. One end of the fixed pipe passes through the sliding plate and connects to the annular cavity. The other end of the fixed pipe passes through the sliding plate and rotatably connects to the end of the swing pipe extending out of the swing shaft. One end of the wire rope is fixedly installed on the adjusting push ring. The other end of the wire rope passes through the fixed pipe and the swing pipe in sequence and extends into the adjusting cylinder and is fixedly connected to the piston. A spring is provided between the side of the piston away from the piston rod and the inner wall of the adjusting cylinder.

2. The device for measuring sediment content in Yellow River water samples according to claim 1, characterized in that: The self-opening collection mechanism includes a collection bracket, a self-opening pusher, and a collection cylinder. The collection bracket is mounted on a fixed base and has a placement groove. The collection cylinder is placed inside the placement groove and has a hollow upper wall. The self-opening pusher is installed inside the collection bracket and is arranged in a circumferential array around the axis of the placement groove.

3. The device for measuring sediment content in Yellow River water samples according to claim 2, characterized in that: A switching mechanism is provided between the opening and closing sampling bracket and the measuring rod. The switching mechanism includes a switching motor, an active dial, and a driven grooved wheel. The bottom end of the measuring rod has a switching cavity. The active dial and the driven grooved wheel are rotatably disposed in the switching cavity. The switching motor is fixedly installed in the switching cavity. The output shaft of the switching motor is coaxially fixed to the active dial. The driven grooved wheel is coaxially fixed to the fixed plate. The driven grooved wheel has radial grooves equidistantly distributed along the circumference. The radial grooves correspond one-to-one with the swing support rod. The active dial has a lever on its side wall. The lever has a lever shaft. The active dial has a fan-shaped clearance groove on the side near the lever shaft. The driven grooved wheel has multiple arc-shaped anti-rotation grooves equidistantly distributed along the circumference. The arc-shaped anti-rotation grooves are spaced apart from the radial grooves. The length from the axis of the arc-shaped anti-rotation groove to the axis of the driven grooved wheel is equal to the length from the axis of the active dial to the axis of the driven grooved wheel.

4. The device for measuring sediment content in Yellow River water samples according to claim 3, characterized in that: The reversing mechanism includes a reversing base, a reversing motor, a rotary seat, a vertical support, and a horizontal support. The reversing base is fixedly installed on a fixed base and has a reversing cavity inside. The reversing motor is fixedly installed inside the reversing cavity. The rotary seat is rotatably mounted on the upper wall of the reversing base. The output end of the reversing motor is coaxially connected to the rotary seat. The vertical support is fixedly installed on both sides of the rotary seat. The horizontal support is horizontally fixedly installed at the top of the vertical support. The lifting mechanism is located at the end of the horizontal support, and the measuring rod is fixedly installed at the end of the horizontal support.

5. The device for measuring sediment content in Yellow River water samples according to claim 4, characterized in that: The measuring rod includes an inner rod and multiple sets of sleeves that slide sequentially from the inside out on the outer side of the inner rod. The outermost sleeve is fixedly installed on the end of the horizontal support away from the vertical support. The lifting mechanism includes a mounting bracket, a winding and unwinding machine, a winding and unwinding shaft, and a lifting rope. The mounting bracket is mounted on the horizontal support, the winding and unwinding shaft is rotatably mounted on the mounting bracket, and the winding and unwinding machine is fixedly mounted on the mounting bracket. The output shaft of the winding and unwinding machine is coaxially connected to the winding and unwinding shaft. One end of the lifting rope slides through the upper wall of the multiple sets of sleeves and is fixedly connected to the upper end of the inner rod. The other end of the lifting rope is wound onto the winding and unwinding shaft and its end is fixedly connected to the winding and unwinding shaft.

6. The device for measuring sediment content in Yellow River water samples according to claim 5, characterized in that: The top of the measuring rod is provided with a guide assembly, which includes a guide roller shaft, a guide ring, and an L-shaped guide bracket. The guide bracket is fixedly installed on the top of the measuring rod. A guide hole is opened on the upper wall of the sleeve. The guide ring is located on the guide bracket. An opening coaxial with the guide ring is opened at the bottom of the guide bracket. The guide ring and the guide hole are coaxial. The guide roller shaft is rotatably located at the upper end of the guide bracket. The lifting rope passes around the guide roller shaft and slides into the inside of the sleeve through the guide ring, the opening, and the guide hole, and is fixedly connected to the inner rod.

7. The device for measuring sediment content in Yellow River water samples according to claim 6, characterized in that: A depth measuring assembly is provided between the guide ring and the guide hole. The depth measuring assembly includes a depth measuring wheel, a photoelectric encoder, and a depth measuring cavity that runs vertically through the cavity. The depth measuring wheel is symmetrically rotated within the depth measuring cavity. The photoelectric encoder is located on the side wall of the depth measuring cavity. The axle of the depth measuring wheel is coaxially connected to the photoelectric code disk of the photoelectric encoder. The lifting rope passes through the depth measuring cavity and between the two symmetrically arranged depth measuring wheels.

8. The device for measuring sediment content in Yellow River water samples according to claim 7, characterized in that: The sounding wheel has an arc-shaped groove along its circumference, and the two sides of the lifting rope are in close contact with the inner wall of the arc-shaped groove. Anti-slip protrusions are evenly distributed along the circumference of the inner wall of the arc-shaped groove.

9. The device for measuring sediment content in Yellow River water samples according to claim 8, characterized in that: The self-opening pusher includes a mounting rod and an arc-shaped component. The mounting rod is symmetrically arranged on the side wall of the arc-shaped component, and the end of the mounting rod is installed on the collection bracket.

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