Sediment sampling device for hydraulic engineering

Abstract

The invention relates to the technical field of hydraulic engineering sampling, in particular to a sediment sampling device for hydraulic engineering, which comprises a supporting platform and a cylindrical shell, the positioning and locking unit is arranged on the outer side of the supporting platform in a surrounding mode and connected with the supporting platform; the stratified sampling units are symmetrically arranged on the outer side of the cylindrical shell; the retractable maintaining units are connected with the cylindrical shell, are symmetrically arranged and are respectively connected with the stratified sampling units on the two sides; wherein the retractable maintaining unit comprises a folding retractable assembly, a segmented regulation and control assembly and a synchronous retracting and rotating assembly, by arranging the retractable maintaining unit, cooperating with the stratified sampling unit and the positioning and locking unit, multiple locking can be performed on the supporting platform during sampling, and automatic retracting and releasing of the stratified sampling unit can be completed before and after use; the convenience of the equipment during storage and transfer is improved, fixed-point sampling can be carried out on sediment at different depths on the two sides at the same time, and the sampling efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of water conservancy sampling, in particular to a sediment sampling device for water conservancy engineering. Background Art

[0002] A water conservancy project is a project built to control and allocate natural surface water and groundwater in order to achieve the purpose of eliminating harm and promoting benefits. During the construction of a water conservancy project, it is necessary to take sediment samples from the destination section, that is, the solid particles carried in the natural water flow. A sediment sampling device is required when taking sediment samples.

[0003] When the existing sediment sampling device is sampling, the sampling device has poor anti-interference ability. Under the action of water flow, the sediment sampling device cannot remain vertical, resulting in inaccurate depth determination, which in turn affects sampling. Moreover, only soil samples of different depths at the same position can be sampled each time, and its use is relatively limited. Therefore, in view of the above situation, it is urgent to develop a sediment sampling device for water conservancy projects to overcome the shortcomings in current practical applications. Summary of the invention

[0004] The object of the present invention is to provide a sediment sampling device for water conservancy projects to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A sediment sampling device for water conservancy projects, comprising: a supporting platform and a cylindrical shell, wherein the cylindrical shell is fixedly connected to the outside of the top of the supporting platform; a positioning locking unit, wherein the positioning locking unit is arranged around the outside of the supporting platform and is connected to the supporting platform, and is used to support the supporting platform and complete multiple locking of the supporting platform; a stratified sampling unit, wherein the stratified sampling unit is symmetrically arranged on the outside of the cylindrical shell, and is used to achieve synchronous sampling of sediments of different depths on both sides; a retractable maintaining unit, wherein the retractable maintaining unit is connected to the cylindrical shell, is symmetrically arranged, and is respectively connected to the stratified sampling units on both sides, and is used to cooperate with the cylindrical shell to achieve support and folding and retracting of the stratified sampling unit, and to achieve relative rotation of the stratified sampling units on both sides, and complete the positioning of the sampling position. Point control; wherein, the retractable maintaining unit includes: a folding and retracting component, a segmented control component and a synchronous retracting and rotating component. The folding and retracting component is symmetrically arranged on the inner side of the cylindrical shell, connected to the cylindrical shell, and connected to the stratified sampling unit, and is used to cooperate with the cylindrical shell to realize the support of the stratified sampling unit. The folding and retracting component is also connected to the segmented control component arranged on the inner side of the cylindrical shell, and is used to cooperate with the segmented control component to realize the automatic retraction and expansion of the stratified sampling unit. A synchronous retracting and rotating component is also arranged between the folding and retracting component and the segmented control component. The synchronous retracting and rotating component is connected to the cylindrical shell, arranged opposite to the segmented control component, and connected to the folding and retracting component, and is used to cooperate with the segmented control component to realize the synchronous steering of the folding and retracting components on both sides, thereby completing the fixed-point control of the sampling position.

[0007] As a further scheme of the present invention: the folding and retracting assembly includes: a rotating support column, a steering gear, a fixed arm, an automatic tensioning and relaxing assembly, a retracting and releasing arm, a protective cylinder, a connecting rotating rod and a retracting and releasing gear. The rotating support column is symmetrically arranged on the inner side of the cylindrical shell and is rotatably connected to the shell wall at the top end of the cylindrical shell. The outer sides of the rotating support columns on both sides are fixedly connected with steering gears connected to the synchronous retracting and rotating assembly. The outer side of the rotating support column is fixedly connected with a fixed arm, the inner side of the other end of the fixed arm is rotatably connected with a connecting rotating rod, the outer side of the connecting rotating rod is fixedly connected with a retracting and releasing arm, and the bottom of the other end of the retracting and releasing arm is fixedly connected with a protective cylinder connected to the stratified sampling unit, which is used to cooperate with the retracting and releasing arm to complete the support of the stratified sampling unit. The retracting and releasing arm is connected to the fixed arm through an automatic tensioning and relaxing assembly, and the automatic tensioning and relaxing assembly is connected to the segmented control assembly, and is meshed with the retracting and releasing gear fixedly connected to the outer side of the connecting rotating rod, which is used to cooperate with the segmented control assembly to drive the retracting and releasing arm to rotate around the connecting rotating rod to realize the retraction and release of the stratified sampling unit.

[0008] As a further solution of the present invention: the automatic tension and relaxation assembly includes: a pressure regulating groove, a joint control chamber, a balance tube, a tension and relaxation control tube, a retractable and retractable control piece, a retractable and retractable rack and a directional slide rail. The pressure regulating groove is arranged on the inner side of the rotary support column and is connected to the segmented regulation assembly. It is connected to the joint control chamber arranged on the inner side of the fixed arm through a balance tube fixedly connected to the rotary support column, and is used to cooperate with the segmented regulation assembly to realize the flow of air inside the joint control chamber. A tension and relaxation control tube connected to the joint control chamber is also fixedly connected to the fixed arm, and a retractable and retractable control piece is slidably connected inside the tension and relaxation control tube. The other end of the retractable and retractable control piece is fixedly connected to the retractable and retractable rack, and the retractable and retractable rack is meshed with the retractable and retractable gear, and is slidably connected to the directional slide rail fixedly connected to the fixed arm, and is used to cooperate with the movement of the retractable and retractable rack to realize the flipping of the retractable and retractable arm, thereby completing the retraction and extension of the stratified sampling unit.

[0009] As a further solution of the present invention: the segmented control component includes: a control seat, a telescopic controller, a pressure adjustment control unit, a fixed column and a delay adjustment control unit. The control seat is arranged on the inner side of the cylindrical shell, and the telescopic controller is symmetrically arranged on the outer side of the top of the control seat. One end of the telescopic controller is fixedly connected to the control seat, and the other end is fixedly connected to the cylindrical shell. The pressure adjustment control unit is slidably connected on the inner side of the pressure control groove. A fixed column is arranged between the pressure adjustment control unit and the control seat. One end of the fixed column is fixedly connected to the control seat, and the other end is slidably connected to the pressure adjustment control unit. A spring is fixedly connected between the fixed column and the pressure adjustment control unit for cooperating with the lifting and lowering of the control seat to realize the flow of air inside the joint control cavity. The control seat is also fixedly connected with a number of delay adjustment controls arranged opposite to the synchronous collection and rotation assembly, which are used to cooperate with the lifting and lowering of the control seat to drive the synchronous collection and rotation assembly to realize the synchronous rotation of the rotary support columns on both sides.

[0010] As a further solution of the present invention: the synchronous collection and rotation assembly includes: an L-shaped guide rail, a steering rack, a sensing box, a trigger tube, a reaction tube and a sensing piston. The sensing box is arranged on the outer side of the top of the control seat and is fixedly connected to the cylindrical shell. A plurality of trigger tubes arranged opposite to the delay adjustment control unit are fixedly connected on the box wall at the bottom end of the sensing box, which are used to cooperate with the movement of the delay adjustment control unit to realize the flow of air inside the sensing box. A reaction tube is also fixedly connected on the box wall of the sensing box, and a sensing piston is fixedly connected on the outer wall at the other end of the reaction tube. The sensing piston is slidably connected to the sensing groove arranged on the inner side of the steering rack, and a reset spring is fixedly connected between the sensing piston and the steering rack. The steering rack is slidably connected to the L-shaped guide rail fixedly connected to the cylindrical shell, and is meshed with the steering gears on the rotary support columns on both sides, which are used to cooperate with the air flowing inside the sensing box to realize the synchronous rotation of the rotary support columns on both sides, thereby completing the regulation of the position of the stratified sampling unit after expansion.

[0011] As a further scheme of the present invention: the stratified sampling unit includes: a lifting motor, a threaded rod, a lifting platform, a drill rod, a wall cleaning scraper and a batch sampling assembly. The lifting motor is fixedly connected to the top of the inner side of the protective tube, and threaded rods rotatably connected to the protective tube are arranged on both sides of the lifting motor. The threaded rods on both sides are connected to the output end of the lifting motor through a belt energy guide. The threaded rods on both sides are also threadedly connected to the lifting platform slidably connected to the inner side of the protective tube. A drill rod is fixedly connected to the outer side of the bottom end of the lifting platform, and a batch sampling assembly is arranged on the inner side of the drill rod for cooperating with the lifting of the lifting platform to drill into the mud and realize synchronous sampling of mud at different depths. A wall cleaning scraper is abutted against the outer side of the drill rod, and the wall cleaning scraper is fixedly connected to the inner side of the bottom end of the protective tube for cooperating with the lifting of the lifting platform to realize cleaning of the drill rod surface.

[0012] As a further scheme of the present invention: the batch sampling assembly includes: a control motor, a control column, a push wheel, a connecting slide, a reset plate, a placement seat, a sampling box, a guide rail and a connecting seat, the control motor is fixedly connected to the top of the inner side of the drill pipe, the output end of the control motor is fixedly connected to the control column, a plurality of push wheels are fixedly connected to the outer side of the control column, a plurality of placement seats slidably connected to the drill pipe wall are arranged around the outer side of the push wheel, guide rails are fixedly connected to both sides of the placement seat, the guide rails are slidably connected to the drill pipe wall, a sampling box is clamped on the inner side of the placement seat for cooperating with the rotation of the push wheel to complete the sampling of sediment, a reset plate is rotatably connected to the shell wall of the placement seat close to the push wheel, a connecting slide is slidably connected to the outer side of the other end of the reset plate, a spring is fixedly connected between the connecting slide and the reset plate, and the other end of the connecting slide is rotatably connected to the connecting seat fixedly connected to the inner side of the drill pipe, for cooperating with the rotation of the push wheel to realize the resetting of the placement seat.

[0013] As a further solution of the present invention: the positioning and locking unit includes: a supporting positioning assembly, an installing motor, a lifting control rod, a center console, a synchronous frame and a universal wheel. The installing motor is fixedly connected to the top of the inner side of the supporting platform, the output end of the installing motor is fixedly connected to the lifting control rod, the outer side of the lifting control rod is threadedly connected to the center console, both sides of the bottom end of the center console are fixedly connected to the synchronous frame, the outer side of the bottom end of the synchronous frame is symmetrically provided with universal wheels, the universal wheels are rotatably connected to the synchronous frame, and the center console is also connected to the supporting positioning assembly arranged around the outer side of the supporting platform, which is used to cooperate with the lifting of the center console to realize the positioning and locking of the supporting platform.

[0014] As a further solution of the present invention: the support positioning component includes: an induction locking component, a locking frame, a cooperative lifting tube, a lifting control component, a pressure-sensing control component, a push-pull plate, a support rod and a pressure-driven control component. The locking frame is arranged around the outside of the supporting platform, and a cooperative lifting tube is arranged between the locking frame and the supporting platform. The cooperative lifting tube is fixedly connected to the supporting platform, and a lifting control component is arranged on the inner side of one end in a sliding connection. The other end of the lifting control component is fixedly connected to the locking frame, and a pressure-sensing control component is arranged on the inner side of the other end of the cooperative lifting tube in a sliding connection. The pressure-sensing control component is arranged on the outer side in a sliding connection. A support rod is provided, a spring is fixedly connected between the support rod and the pressure-sensing control component, the other end of the support rod is fixedly connected to the push-pull plate, a push-pull rod is provided between the push-pull plate and the center console, one end of the push-pull rod is rotatably connected to the center console, and the other end is rotatably connected to the locking frame, which is used to cooperate with the movement of the center console to realize the lifting and lowering of the locking frame and complete the support positioning of the supporting platform, an induction locking component is also provided between the locking frame and the supporting platform, and a pressure-driven control component arranged opposite to the induction locking component is fixedly connected on the push-pull plate, which is used to cooperate with the subsequent movement of the push-pull plate to realize the locking of the locking frame.

[0015] As a further solution of the present invention: the induction locking assembly includes: a fixed tube, a cavity, a pressure-stabilizing tube, a connecting piston, a locking nail and a positioning retaining ring. The fixed tube is fixedly connected to the supporting platform, one end of which is arranged opposite to the pressure drive control unit, and the other end is slidingly connected inside with a pressure-stabilizing tube. The other end of the pressure-stabilizing tube is fixedly connected to the locking frame and connected to the cavity arranged on the inner side of the locking frame. A plurality of inclined locking plugs are arranged on the inner side of the cavity. The inner side of the locking plug is fixedly connected to the locking frame, and a connecting piston is slidingly connected on the inner side. The outer side of the bottom end of the connecting piston is fixedly connected with a locking nail, and the other end is connected to the locking plug through a spring. The inner side of the locking plug is also fixedly connected with a positioning retaining ring for positioning the connecting piston during movement.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] When the device is in operation, the supporting platform is placed on the bank of the river channel, the positioning locking unit can support the supporting platform and be inserted into the inner side of the ground on the bank to lock the supporting platform, thereby ensuring the stability of the equipment during use, and the segmented control component can drive the folding and retracting components on both sides to unfold, and the folding and retracting components drive the stratified sampling units to move synchronously, thereby completing the unfolding of the stratified sampling units. After the stratified sampling units are unfolded, the segmented control component can continue to drive the synchronous retracting and rotating components, and the synchronous retracting and rotating components drive the folding and retracting components on both sides to rotate relative to each other, so that the stratified sampling units on both sides are rotated to the top of the river channel, and the distance between the stratified sampling units on both sides can be adjusted, thereby completing the fixed-point sampling, and the stratified sampling units on both sides can be synchronously The device can take and put the mud and sand at different depths, and can sample the mud and sand at different positions, so that the equipment can perform multi-point sampling of the mud and sand at different positions, which greatly improves the sampling efficiency, thereby reducing the number of sampling times of personnel and ensuring the standardization of the sampling results. The present application sets a retractable maintenance unit, cooperates with the stratified sampling unit and the positioning locking unit, and can perform multiple locking on the supporting platform in the sampling, thereby ensuring the stability of the equipment during sampling, and can also complete the automatic retraction and release of the stratified sampling unit before and after use, thereby reducing the space occupied by the equipment and improving the convenience of the equipment during storage and transportation. It can also perform fixed-point sampling of mud and sand at different depths on both sides at the same time, which greatly improves the sampling efficiency, thereby reducing the number of sampling times of personnel and ensuring the standardization of the sampling results. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of a sediment sampling device for water conservancy projects.

[0019] Figure 2 This is a cross-sectional view of a sediment sampling device for water conservancy projects.

[0020] Figure 3 This is a schematic diagram of the structure of the folding and retracting components in the sediment sampling device for water conservancy projects.

[0021] Figure 4 This is a cross-sectional view of the folding and retracting components of a sediment sampling device for water conservancy projects.

[0022] Figure 5 for Figure 4 Schematic diagram of the enlarged structure at point A in the middle.

[0023] Figure 6 This is a schematic diagram of the structure of the segmented control components in the sediment sampling device for water conservancy projects.

[0024] Figure 7 This is a schematic diagram of the structure of the synchronous collection and rotation components in the sediment sampling device for water conservancy projects.

[0025] Figure 8This is a schematic diagram of the structure of the stratified sampling unit in the sediment sampling device for water conservancy projects.

[0026] Fig. 9 This is a schematic diagram of the internal structure of the drill rod in the sediment sampling device for water conservancy projects.

[0027] Fig.10 This is a schematic diagram of the structure of the batch sampling components in the sediment sampling device for water conservancy projects.

[0028] Fig.11 This is a schematic diagram of the structure of the positioning and locking unit in the sediment sampling device for water conservancy projects.

[0029] Fig.12 This is a cross-sectional view of the positioning and locking unit in the sediment sampling device for water conservancy projects.

[0030] Fig.13 for Fig.12 Schematic diagram of the enlarged structure at point B in the middle.

[0031] In the figure: 1. Support platform; 2. Cylinder shell; 3. Retractable maintenance unit; 4. Positioning locking unit; 5. Layered sampling unit; 6. Folding retractable assembly; 7. Segmented control assembly; 8. Synchronous retractable assembly; 9. Rotary support column; 10. Steering gear; 11. Fixed arm; 12. Automatic tension and relaxation assembly; 13. Retractable arm; 14. Protective cylinder; 15. Pressure regulating groove; 16. Joint control chamber; 17. Balance pipe; 18. Tension and relaxation control pipe; 19. Retractable control member; 20. Retractable rack; 21. Connecting rotating rod; 22. Retractable gear; 23. Directional slide rail; 24. Control seat; 25. Telescopic controller; 26. Pressure adjustment control unit; 27. Fixed column; 28. Delay adjustment control unit; 29. ​​L-shaped guide rail; 30. Steering rack; 31. Induction box; 32. Touch 1. Launch tube; 33. Reaction tube; 34. Induction piston; 35. Lifting motor; 36. Threaded rod; 37. Lifting platform; 38. Drill rod; 39. Wall scraper; 40. Control motor; 41. Control column; 42. Push wheel; 43. Connecting slide plate; 44. Reset plate; 45. Placement seat; 46. Sampling box; 47. Guide rail; 48. Connecting seat; 49. Locking frame; 50. Mounting motor; 51. Lifting control rod; 52. Center console; 53. Synchronous frame; 54. Universal wheel; 55. Cooperative lifting tube; 56. Lifting control part; 57. Pressure sensing control part; 58. Push-pull plate; 59. Support rod; 60. Pressure drive control part; 61. Fixed tube; 62. Cavity; 63. Voltage regulator tube; 64. Connecting piston; 65. Locking nail; 66. Positioning retaining ring. DETAILED DESCRIPTION

[0032] The technical solution of the present application is further described in detail below in conjunction with specific implementation methods.

[0033] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0034] See also Figure 1 and Figure 2 In one embodiment of the present invention, a sediment sampling device for a water conservancy project includes: a supporting platform 1 and a cylindrical shell 2, wherein the cylindrical shell 2 is fixedly connected and arranged on the outer side of the top of the supporting platform 1; a positioning locking unit 4, wherein the positioning locking unit 4 is arranged around the outer side of the supporting platform 1 and is connected to the supporting platform 1, and is used to support the supporting platform 1 and complete multiple locking of the supporting platform 1; a stratified sampling unit 5, wherein the stratified sampling unit 5 is symmetrically arranged on the outer side of the cylindrical shell 2, and is used to achieve synchronous sampling of sediments of different depths on both sides; a retractable maintaining unit 3, wherein the retractable maintaining unit 3 is connected to the cylindrical shell 2, is symmetrically arranged, and is respectively connected to the stratified sampling units 5 on both sides, and is used to cooperate with the cylindrical shell 2 to achieve support and folding and retracting of the stratified sampling unit 5, and to achieve relative rotation of the stratified sampling units 5 on both sides, and complete sampling Fixed-point control of position; wherein, the retractable maintaining unit 3 includes: a folding and retracting component 6, a segmented control component 7 and a synchronous retracting and rotating component 8, wherein the folding and retracting component 6 is symmetrically arranged on the inner side of the cylindrical shell 2, connected to the cylindrical shell 2, and connected to the stratified sampling unit 5, and is used to cooperate with the cylindrical shell 2 to realize the support of the stratified sampling unit 5, the folding and retracting component 6 is also connected to the segmented control component 7 arranged on the inner side of the cylindrical shell 2, and is used to cooperate with the segmented control component 7 to realize the automatic retraction and expansion of the stratified sampling unit 5, and a synchronous retracting and rotating component 8 is also arranged between the folding and retracting component 6 and the segmented control component 7, the synchronous retracting and rotating component 8 is connected to the cylindrical shell 2, is arranged opposite to the segmented control component 7, and is connected to the folding and retracting component 6, and is used to cooperate with the segmented control component 7 to realize the synchronous steering of the folding and retracting components 6 on both sides, thereby completing the fixed-point control of the sampling position.

[0035] In this embodiment, when the device is in operation, the supporting platform 1 is placed on the bank of the river channel, the positioning locking unit 4 can complete the support of the supporting platform 1, and is inserted into the inner side of the ground of the bank to complete the locking of the supporting platform 1, thereby ensuring the stability of the device when in use, and the segmented regulating component 7 can drive the folding and retracting components 6 on both sides to unfold, and the folding and retracting components 6 drive the stratified sampling units 5 to move synchronously, thereby completing the unfolding of the stratified sampling units 5. After the stratified sampling units 5 are unfolded, the segmented regulating component 7 can continue to drive the synchronous retracting and rotating component 8, and the synchronous retracting and rotating component 8 drives the folding and retracting components 6 on both sides to rotate relative to each other, so that the stratified sampling units 5 on both sides are rotated to the top of the river channel, and the spacing between the stratified sampling units 5 on both sides can be adjusted, thereby completing the fixed-point sampling, and the stratified sampling units 5 on both sides can be arranged on the upper side of the river channel. The stratified sampling unit 5 can take and put mud and sand at the same time, and can sample mud and sand at different depths, so that the equipment can perform multi-point sampling of mud and sand at different positions, which greatly improves the sampling efficiency, thereby reducing the number of sampling times by personnel and ensuring the standardization of the sampling results. The present application sets a retractable maintenance unit 3, cooperates with the stratified sampling unit 5 and the positioning locking unit 4, and can perform multiple locking on the supporting platform 1 in sampling, thereby ensuring the stability of the equipment during sampling, and can also complete the automatic retraction and release of the stratified sampling unit 5 before and after use, thereby reducing the space occupied by the equipment and improving the convenience of the equipment during storage and transportation. It can also perform fixed-point sampling of mud and sand at different depths on both sides at the same time, which greatly improves the sampling efficiency, thereby reducing the number of sampling times by personnel and ensuring the standardization of the sampling results.

[0036] In one embodiment of the present invention, please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 The folding and retracting assembly 6 includes: a rotating support column 9, a steering gear 10, a fixed arm 11, an automatic tensioning and relaxing assembly 12, a retracting and retracting arm 13, a protective tube 14, a connecting rod 21 and a retracting and retracting gear 22. The rotating support column 9 is symmetrically arranged on the inner side of the cylindrical shell 2 and is rotatably connected to the shell wall of the top end of the cylindrical shell 2. The outer sides of the rotating support columns 9 on both sides are fixedly connected with the steering gear 10 connected to the synchronous retracting and rotating assembly 8. The outer side of the rotating support column 9 is fixedly connected with the fixed arm 11. The inner side of the other end of the fixed arm 11 is rotatably connected with the connecting rod 21. The outer side of the connecting rod 21 is fixed A retractable arm 13 is connected, and a protective tube 14 connected to the stratified sampling unit 5 is fixedly connected at the bottom of the other end of the retractable arm 13, which is used to cooperate with the retractable arm 13 to complete the support of the stratified sampling unit 5. The retractable arm 13 is connected to the fixed arm 11 through an automatic tensioning and relaxing component 12, and the automatic tensioning and relaxing component 12 is connected to the segmented control component 7, and is meshed with a retractable gear 22 fixedly connected to the outside of the connecting rotating rod 21, which is used to cooperate with the segmented control component 7 to drive the retractable arm 13 to rotate around the connecting rotating rod 21 to realize the retraction and extension of the stratified sampling unit 5.

[0037] In this embodiment, the synchronous retracting and rotating component 8 is arranged between the rotating support columns 9 on both sides, and the segmented regulating component 7 can cooperate with the automatic tensioning and relaxing component 12 to drive the retracting and releasing gear 22 to rotate, and the retracting and releasing gear 22 cooperates with the connecting rotating rod 21 to drive the retracting and releasing arm 13 to rotate synchronously, and the retracting and releasing arm 13 cooperates with the protective tube 14 to drive the stratified sampling unit 5 to move synchronously, and unfold the retracting and releasing arm 13. As the retracting and releasing arm 13 unfolds, the segmented regulating component 7 can drive the synchronous retracting and rotating component 8, and the synchronous retracting and rotating component 8 cooperates with the steering gear 10 to realize the rotation of the rotating support column 9, and the rotating support column 9 drives the fixed arm 11 to rotate synchronously, and the fixed The arm 11 cooperates with the automatic tension and relaxation component 12 and the retractable arm 13 to drive the protective tube 14 to rotate synchronously, and the protective tube 14 drives the stratified sampling unit 5 to move, and adjusts the position of the stratified sampling unit 5, so that the stratified sampling unit 5 moves above the mud and sand, and locates the sampling position to achieve precise sampling. By setting up the folding and retractable component 6, it can cooperate with the cylindrical shell 2 to complete the support of the stratified sampling unit 5, and can cooperate with the segmented control component 7 and the synchronous retractable component 8 to complete the automatic retraction and extension of the stratified sampling unit 5, thereby reducing the space occupied by the equipment and improving the convenience of the equipment during storage and transportation.

[0038] In one embodiment of the present invention, please refer to Figure 4 and Figure 5 The automatic tension and relaxation assembly 12 includes: a pressure regulating groove 15, a joint control chamber 16, a balance pipe 17, a tension and relaxation control pipe 18, a retractable control member 19, a retractable rack 20 and a directional slide rail 23. The pressure regulating groove 15 is arranged on the inner side of the rotating support column 9 and is connected to the segmented regulating assembly 7. The balance pipe 17 fixedly connected to the rotating support column 9 is connected to the joint control chamber 16 arranged on the inner side of the fixed arm 11, and is used to cooperate with the segmented regulating assembly 7 to realize the flow of air inside the joint control chamber 16. The fixed arm 11 is also fixedly connected with a tension and relaxation control tube 18 connected to the joint control chamber 16, and a retracting and releasing control member 19 is slidably connected to the inner side of the tension and relaxation control tube 18. The other end of the retracting and releasing control member 19 is fixedly connected with a retracting and releasing rack 20. The retracting and releasing rack 20 is meshed with the retracting and releasing gear 22, and is slidably connected with a directional slide rail 23 fixedly connected to the fixed arm 11, so as to cooperate with the movement of the retracting and releasing rack 20 to realize the flipping of the retracting and releasing arm 13, thereby completing the retraction and releasing of the stratified sampling unit 5.

[0039] In this embodiment, the retractable control member 19 includes a first piston slidably connected to the inner side of the tension and relaxation control tube 18 and a first push rod fixedly connected to the first piston. The other end of the first push rod is fixedly connected to the retractable rack 20. In addition, a limit ring is fixedly connected to the inner side of the tension and relaxation control tube 18. When the first piston abuts against the limit ring, the retractable arm 13 is fully unfolded, and the segmented control component 7 drives the air inside the pressure control groove 15 to enter the inner side of the joint control chamber 16 along the balance pipe 17, and then enters the inner side of the tension and relaxation control tube 18, driving the first piston to move. The first piston and The limiting ring is in contact, and the first piston drives the retractable rack 20 to move through the first push rod. The retractable rack 20 cooperates with the retractable gear 22 to drive the connecting rotating rod 21 to rotate, and the connecting rotating rod 21 drives the retractable arm 13 to rotate. The retractable arm 13 moves to the side away from the fixed arm 11, completing the deployment operation of the retractable arm 13. By setting up the automatic tensioning and relaxing component 12, it can cooperate with the segmented control component 7 to realize the automatic retraction and deployment of the retractable arm 13. During detection, the retractable arm 13 is automatically deployed, and during storage, the retractable arm 13 is automatically folded, which greatly improves the convenience of the equipment during storage and transportation.

[0040] In one embodiment of the present invention, please refer to Figure 6 The segmented control component 7 includes: a control seat 24, a telescopic controller 25, a pressure adjustment control 26, a fixed column 27 and a delay adjustment control 28. The control seat 24 is arranged on the inner side of the cylindrical shell 2. The telescopic controller 25 is symmetrically arranged on the outer side of the top of the control seat 24. One end of the telescopic controller 25 is fixedly connected to the control seat 24, and the other end is fixedly connected to the cylindrical shell 2. The pressure adjustment control 26 is slidably connected and arranged on the inner side of the pressure control groove 15. A fixed column 27 is arranged between the pressure adjustment control 26 and the control seat 24. One end of the fixed column 27 is fixedly connected to the control seat 24, and the other end is slidably connected to the pressure adjustment control 26. A spring is fixedly connected between the fixed column 27 and the pressure adjustment control 26, which is used to cooperate with the lifting of the control seat 24 to realize the flow of air inside the joint control chamber 16. The control seat 24 is also fixedly connected with a plurality of delay adjustment controls 28 arranged opposite to the synchronous collection and rotation assembly 8, which are used to cooperate with the lifting of the control seat 24 to drive the synchronous collection and rotation assembly 8 to realize the synchronous rotation of the rotation support columns 9 on both sides.

[0041] In this embodiment, the telescopic controller 25 is an electric telescopic rod, and the pressure adjustment control 26 includes a second piston slidably connected to the inner side of the pressure regulating groove 15 and a second push rod fixedly connected to the second piston. A fixed column 27 is slidably connected to the outer side of the bottom end of the second push rod, and the other end of the fixed column 27 is fixedly connected to the control seat 24. A spring is fixedly connected between the second push rod and the fixed column 27. In addition, the delay adjustment control 28 includes a third push rod fixedly connected to the outer side of the top end of the control seat 24 and a third piston fixedly connected to the third push rod. The third piston is arranged opposite to the synchronous retracting assembly 8. Initially, the second piston is located on the inner side of the pressure regulating groove 15, and the third piston is located on the outer side of the synchronous retracting assembly 8. The telescopic controller 25 drives the control seat 24 to move upward, and the control seat 24 cooperates with the fixed column 27 to drive the second piston in the pressure The force regulating groove 15 moves inside to realize the expansion of the retractable arm 13. When the retractable arm 13 is fully expanded, the control seat 24 continues to move upward, and the third piston enters the inside of the synchronous retractable assembly 8 to complete the driving of the synchronous retractable assembly 8. The synchronous retractable assembly 8 can drive the rotary support columns 9 on both sides to rotate synchronously, and turn the stratified sampling unit 5 to the top of the mud and sand, so that personnel can stay away from the river during the sampling process, ensuring the safety of sampling, and can accurately control the sampling position, greatly improving the diversity of sampling. By setting the segmented control component 7, not only can the automatic expansion and contraction of the folding and retracting assembly 6 be completed, but also the rotary support columns 9 on both sides can be driven to rotate synchronously, and the stratified sampling unit 5 can be turned to the top of the mud and sand, so that personnel can stay away from the river during the sampling process, ensuring the safety of sampling, and can accurately control the sampling position, thereby ensuring the standardization of the sampling results.

[0042] In one embodiment of the present invention, please refer to Figure 7 The synchronous collection and rotation assembly 8 includes: an L-shaped guide rail 29, a steering rack 30, an induction box 31, a trigger tube 32, a reaction conduit 33 and an induction piston 34. The induction box 31 is arranged on the outer side of the top of the control seat 24 and is fixedly connected to the cylindrical shell 2. A plurality of trigger tubes 32 arranged opposite to the delay adjustment control 28 are fixedly connected on the box wall at the bottom of the induction box 31 to cooperate with the movement of the delay adjustment control 28 to realize the flow of air inside the induction box 31. A reaction conduit 33 is also fixedly connected on the box wall of the induction box 31. A sensing piston 34 is fixedly connected to the outer wall of the other end of the tube 33. The sensing piston 34 is slidably connected to the sensing groove arranged on the inner side of the steering rack 30. A return spring is fixedly connected between the sensing piston 34 and the steering rack 30. The steering rack 30 is slidably connected to the L-shaped guide rail 29 fixedly connected to the cylindrical shell 2, and is meshed with the steering gears 10 on the rotary support columns 9 on both sides, so as to cooperate with the air flowing inside the sensing box 31 to realize the synchronous rotation of the rotary support columns 9 on both sides, thereby completing the regulation of the position of the stratified sampling unit 5 after expansion.

[0043] In this embodiment, the trigger tube 32 is arranged opposite to the third piston, and the inner diameter of the trigger tube 32 is equal to the outer diameter of the third piston. The third piston enters the inner side of the trigger tube 32, and the air inside the sensing box 31 enters the inner side of the sensing groove along the reaction conduit 33, and cooperates with the sensing piston 34 to drive the steering rack 30 to move along the L-shaped guide rail 29. The steering rack 30 cooperates with the steering gear 10 to drive the swing support column 9 to rotate, and the swing support column 9 drives the fixed arm 11 to rotate. When the third piston is separated from the sensing groove, the reset spring arranged between the sensing piston 34 and the steering rack 30 can realize the reset of the swing support column 9, that is, complete the recovery of the fixed arm 11. By setting the synchronous retracting and rotating component 8, the rotation of the swing support column 9 can be realized after the retracting arm 13 is unfolded, and the position of the stratified sampling unit 5 after the unfolding is completed. It can not only improve the safety of personnel during sediment sampling, but also improve the accuracy of sampling, and can also realize the automatic recovery of the folding and retracting component 6, which is conducive to improving the convenience of the equipment when in use.

[0044] In one embodiment of the present invention, please refer to Figure 8 The stratified sampling unit 5 includes: a lifting motor 35, a threaded rod 36, a lifting platform 37, a drill rod 38, a wall cleaning scraper 39 and a batch sampling component. The lifting motor 35 is fixedly connected to the top of the inner side of the protective tube 14. Threaded rods 36 rotatably connected to the protective tube 14 are arranged on both sides of the lifting motor 35. The threaded rods 36 on both sides are connected to the output end of the lifting motor 35 through a belt energy guide. The threaded rods 36 on both sides are also threadedly connected to the lifting platform 37 slidably connected to the inner side of the protective tube 14. A drill rod 38 is fixedly connected to the outer side of the bottom end of the lifting platform 37. A batch sampling component is arranged inside the drill rod 38 for cooperating with the lifting of the lifting platform 37 to drill into the mud and realize synchronous sampling of mud at different depths. A wall cleaning scraper 39 is abutted against the outer side of the drill rod 38. The wall cleaning scraper 39 is fixedly connected to the inner side of the bottom end of the protective tube 14 to cooperate with the lifting of the lifting platform 37 to realize cleaning of the surface of the drill rod 38.

[0045] In this embodiment, the belt energy guide comprises a pulley fixedly connected to the threaded rods 36 on both sides and the outer side of the output end of the lifting motor 35, and the pulleys are connected by belts. When the protective tube 14 moves to the specified position, the lifting motor 35 drives the threaded rods 36 on both sides to rotate synchronously through the pulleys and the belts, and the threaded rods 36 drive the lifting platform 37 to move downward, and the lifting platform 37 drives the drill rod 38 to move downward. The drill rod 38 is inserted into the inner side of the mud and reaches the specified depth. The batch sampling assembly can cooperate with the drill rod 38 inserted into the inner side of the mud and sand to complete the synchronous sampling of mud and sand at different depths. After the sampling is completed, the drill rod 38 is retracted to the inner side of the protective tube 14 under the drive of the lifting platform 37. During the recovery process, the wall cleaning scraper 39 can clean the outer surface of the drill rod 38 to avoid interference of excess mud and sand on the sampling results, thereby ensuring the reliability of the sampling results. By setting the stratified sampling unit 5, mud and sand at different depths can be sampled at one time, and the surface of the drill rod 38 can be cleaned during the retraction process to avoid interference of excess mud and sand on the sampling results, thereby ensuring the reliability of the sampling results.

[0046] In one embodiment of the present invention, please refer to Fig. 9 and Fig.10 The batch sampling assembly includes: a control motor 40, a control column 41, a push wheel 42, a connecting slide 43, a reset plate 44, a placement seat 45, a sampling box 46, a guide rail 47 and a connecting seat 48. The control motor 40 is fixedly connected to the top of the inner side of the drill rod 38, the output end of the control motor 40 is fixedly connected to the control column 41, a plurality of push wheels 42 are fixedly connected to the outer side of the control column 41, a plurality of placement seats 45 slidably connected to the wall of the drill rod 38 are arranged around the outer side of the push wheel 42, and guide rails 47 are fixedly connected to both sides of the placement seat 45. The rail 47 is slidably connected to the wall of the drill rod 38, and a sampling box 46 is clamped on the inner side of the placement seat 45 for completing the sampling of sediment in cooperation with the rotation of the top push wheel 42. A reset plate 44 is rotatably connected to the shell wall of the placement seat 45 on one side close to the top push wheel 42, and a connecting slide plate 43 is slidably connected to the outer side of the other end of the reset plate 44. A spring is fixedly connected between the connecting slide plate 43 and the reset plate 44, and the other end of the connecting slide plate 43 is rotatably connected to a connecting seat 48 fixedly connected to the inner side of the drill rod 38, so as to cooperate with the rotation of the top push wheel 42 to realize the resetting of the placement seat 45.

[0047] In this embodiment, the push wheel 42 includes a circular rotating wheel and an arc-shaped protrusion fixedly connected to the outer side of the circular rotating wheel. Initially, the arc-shaped protrusion is located between the two side placement seats 45. When sampling, the control motor 40 drives the control column 41 to rotate, and the control column 41 drives the push wheel 42 to rotate synchronously. The push wheel 42 pushes the placement seat 45 adjacent to it. The placement seat 45 extends from the inner side of the drill rod 38. The sampling box 46 set on the inner side of the placement seat 45 completes the sampling of the sediment. As the control column 41 continues to rotate, the sampling box 46 set on the connecting slide 43 The spring-driven placement seat 45 between the reset plate 44 is retracted to the inside of the drill rod 38 to complete a sampling. The position of the drill rod 38 is adjusted, and the control column 41 continues to rotate. The sampling box 46 inside the remaining placement seat 45 can be used to complete multiple samplings, thereby completing the rapid sampling of sediment at multiple positions and depths. By setting up a batch sampling component, the position of the protective tube 14 can be adjusted to complete the rapid sampling of sediment at multiple positions and depths, which greatly improves the sampling efficiency, thereby reducing the number of sampling times by personnel, and is conducive to improving the standardization of the sampling results.

[0048] In one embodiment of the present invention, please refer to Fig.11 and Fig.12 The positioning and locking unit 4 includes: a supporting and positioning component, an installation motor 50, a lifting control rod 51, a center console 52, a synchronous frame 53 and a universal wheel 54. The installation motor 50 is fixedly connected to the top of the inner side of the supporting platform 1, and the output end of the installation motor 50 is fixedly connected to the lifting control rod 51. The outer side of the lifting control rod 51 is threadedly connected to the center console 52. Both sides of the bottom end of the center console 52 are fixedly connected to the synchronous frame 53. The outer side of the bottom end of the synchronous frame 53 is symmetrically provided with universal wheels 54. The universal wheels 54 are rotatably connected to the synchronous frame 53. The center console 52 is also connected to the supporting and positioning component arranged around the outer side of the supporting platform 1, so as to cooperate with the lifting of the center console 52 to realize the positioning and locking of the supporting platform 1.

[0049] In this embodiment, the synchronous frame 53 is symmetrically arranged at the bottom of both ends of the center console 52, and the bottom of both ends of the synchronous frame 53 are rotatably connected with universal wheels 54. The installed motor 50 can cooperate with the lifting control rod 51 to realize the lifting of the center console 52. After the center console 52 drives the universal wheels 54 to be retracted to the inner side of the supporting platform 1 through the synchronous frame 53, the center console 52 can also complete the driving of the supporting positioning assembly. The supporting positioning assembly contacts the ground to complete the support of the supporting platform 1. In addition, the supporting positioning assembly is distributed in a triangular shape, which improves the reliability of the support. By setting the positioning locking unit 4, it is convenient for people to move the equipment, and the equipment can be stably supported, and the equipment can be multi-locked, which ensures the stability and reliability of the equipment during sampling.

[0050] In one embodiment of the present invention, please refer to Fig.12The support positioning component includes: an induction locking component, a locking frame 49, a cooperative lifting tube 55, a lifting control component 56, a pressure-sensing control component 57, a push-pull plate 58, a support rod 59 and a pressure-driven control component 60. The locking frame 49 is arranged around the outside of the supporting platform 1, and a cooperative lifting tube 55 is arranged between the locking frame 49 and the supporting platform 1. The cooperative lifting tube 55 is fixedly connected to the supporting platform 1, and a lifting control component 56 is slidably connected to the inner side of one end. The other end of the lifting control component 56 is fixedly connected to the locking frame 49, and a pressure-sensing control component 57 is slidably connected to the inner side of the other end of the cooperative lifting tube 55. The support rod is slidably connected to the outer side of the pressure-sensing control component 57. 59, a spring is fixedly connected between the support rod 59 and the pressure sensing control unit 57, the other end of the support rod 59 is fixedly connected to the push-pull plate 58, a push-pull rod is arranged between the push-pull plate 58 and the center console 52, one end of the push-pull rod is rotatably connected to the center console 52, and the other end is rotatably connected to the locking frame 49, which is used to cooperate with the movement of the center console 52 to realize the lifting and lowering of the locking frame 49, and complete the support and positioning of the supporting platform 1, an induction locking component is also arranged between the locking frame 49 and the supporting platform 1, and a pressure driving control unit 60 arranged opposite to the induction locking component is fixedly connected to the push-pull plate 58, which is used to cooperate with the subsequent movement of the push-pull plate 58 to realize the locking of the locking frame 49.

[0051] In this embodiment, the lifting control component 56 includes a fourth piston slidably connected to the inner side of the cooperative lifting tube 55 and a fourth push rod fixedly connected to the fourth piston, and the other end of the fourth push rod is fixedly connected to the locking frame 49. The pressure sensing control component 57 includes a fifth piston slidably connected to the inner side of the other end of the cooperative lifting tube 55 and a fifth push rod fixedly connected to the fifth piston. A support rod 59 is slidably connected to the outer side of the other end of the fifth push rod, and a spring is fixedly connected between the support rod 59 and the fifth push rod. The pressure driving component 60 includes a fixed connection to the push-pull plate 5 8, and the sixth push rod on the outside and the sixth piston fixedly connected to the sixth push rod, during the upward movement of the center console 52, the center console 52 drives the push-pull plate 58 to move toward the side close to the cooperative lifting tube 55 through the push-pull rod, and the fifth piston moves inside the cooperative lifting tube 55, and then cooperates with the fourth piston to drive the locking frame 49 to move downward and contact with the ground to complete the support of the supporting platform 1. By setting a support positioning component, the supporting platform 1 can be supported and positioned from multiple directions after the universal wheel 54 is folded, and the locking frames 49 cooperate with each other, which greatly improves the stability of the support.

[0052] In one embodiment of the present invention, please refer to Fig.12 and Fig.13The induction locking assembly includes: a fixed tube 61, a cavity 62, a voltage-stabilizing tube 63, a connecting piston 64, a locking nail 65 and a positioning retaining ring 66. The fixed tube 61 is fixedly connected to the supporting platform 1, one end of which is arranged opposite to the pressure drive control unit 60, and the other end is slidably connected to the inner side of the voltage-stabilizing tube 63. The other end of the voltage-stabilizing tube 63 is fixedly connected to the locking frame 49 and is connected to the cavity 62 arranged on the inner side of the locking frame 49. A plurality of inclined locking plugs are arranged on the inner side of the cavity 62. The inner side of the locking plug is fixedly connected to the locking frame 49, and a connecting piston 64 is slidably connected on the inner side. A locking nail 65 is fixedly connected to the outer side of the bottom end of the connecting piston 64, and the other end is connected to the locking plug through a spring. A positioning retaining ring 66 is also fixedly connected to the inner side of the locking plug for positioning the connecting piston 64 during movement.

[0053] In this embodiment, the sixth piston is arranged opposite to the fixed tube 61, and the outer diameter of the sixth piston is equal to the inner diameter of the fixed tube 61. When the locking frame 49 contacts the ground, the sixth piston enters the inner side of the fixed tube 61, and the air inside the fixed tube 61 enters the inner side of the cavity 62 along the voltage-stabilizing tube 63. The connecting piston 64 moves downward, and the connecting piston 64 drives the locking nail 65 to insert into the inner side of the ground. The positioning retaining ring 66 positions the connecting piston 64 to complete the locking of the equipment. By setting the induction locking assembly, multiple locking can be achieved, which greatly improves the reliability of the support.

[0054] The sediment sampling device for water conservancy projects can perform multiple locking on the supporting platform 1 in sampling by setting a retractable maintaining unit 3, cooperating with the stratified sampling unit 5 and the positioning locking unit 4, thereby ensuring the stability of the device during sampling, and can also complete the automatic retraction and deployment of the stratified sampling unit 5 before and after use, thereby reducing the space occupied by the device and improving the convenience of the device during storage and transportation. It can also perform fixed-point sampling of sediments at different depths on both sides at the same time, greatly improving the sampling efficiency, thereby reducing the number of sampling times by personnel, and ensuring the standardization of the sampling results. By setting a folding and retracting component 6, it can cooperate with the cylindrical shell 2 to complete the The stratified sampling unit 5 can be supported, and can cooperate with the segmented regulating component 7 and the synchronous retracting and rotating component 8 to complete the automatic retraction and release of the stratified sampling unit 5, thereby reducing the space occupied by the equipment and improving the convenience of the equipment during storage and transportation. By setting the automatic tension and relaxation component 12, the segmented regulating component 7 can be cooperated with the segmented regulating component 7 to realize the automatic retraction and release of the retracting arm 13. During detection, the retracting arm 13 is automatically unfolded, and during storage, the retracting arm 13 is automatically retracted, which greatly improves the convenience of the equipment during storage and transportation. By setting the segmented regulating component 7, not only can the automatic retraction and release of the folding and retracting component 6 be completed, but also the rotating support columns 9 on both sides can be driven to move synchronously. The stratified sampling unit 5 is rotated to be above the sediment, so that personnel are away from the river during the sampling process, the safety of sampling is ensured, and the sampling position can be accurately adjusted to ensure the standardization of the sampling results. By setting the synchronous retracting and rotating component 8, the rotation of the rotating support column 9 can be realized after the retracting and releasing arm 13 is unfolded, and the position of the stratified sampling unit 5 after unfolding is regulated, which can not only improve the safety of personnel during sediment sampling, but also improve the sampling accuracy, and can also realize the automatic recovery of the folding and retracting component 6, which is conducive to improving the convenience of the equipment when in use. By setting the stratified sampling unit 5, different The deep mud and sand can be sampled, and the surface of the drill rod 38 can be cleaned during the retraction and extension process to avoid interference of excess mud and sand on the sampling results, thereby ensuring the reliability of the sampling results. By setting up batch sampling components, the position of the protective tube 14 can be adjusted to complete the rapid sampling of mud and sand in multiple positions and depths, which greatly improves the sampling efficiency, thereby reducing the number of sampling times by personnel, and is conducive to improving the standardization of the sampling results. By setting up the positioning locking unit 4, it is convenient for people to move the equipment, and the equipment can be stably supported and multi-locked, thereby ensuring the stability and reliability of the equipment during sampling.

[0055] The above are only preferred embodiments of the present invention. It should be pointed out that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention. These should also be regarded as the protection scope of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A sediment sampling device for water conservancy projects, characterized in that: include: A supporting platform and a cylindrical shell, wherein the cylindrical shell is fixedly connected and arranged on the outer side of the top end of the supporting platform; A positioning locking unit, which is disposed around the outside of the supporting platform and connected to the supporting platform, and is used to support the supporting platform and perform multiple locking of the supporting platform; A stratified sampling unit, which is symmetrically arranged on the outside of the cylindrical shell and is used to achieve synchronous sampling of sediment at different depths on both sides; A retractable holding unit, which is connected to the cylindrical shell and symmetrically arranged, and is respectively connected to the stratified sampling units on both sides, and is used to cooperate with the cylindrical shell to realize the support and folding and retracting of the stratified sampling units, and realize the relative rotation of the stratified sampling units on both sides, so as to complete the fixed-point control of the sampling position; Among them, the retractable maintaining unit includes: a folding and retracting component, a segmented control component and a synchronous retracting and rotating component. The folding and retracting component is symmetrically arranged on the inner side of the cylindrical shell, connected to the cylindrical shell and connected to the stratified sampling unit, and is used to cooperate with the cylindrical shell to realize the support of the stratified sampling unit. The folding and retracting component is also connected to the segmented control component arranged on the inner side of the cylindrical shell, and is used to cooperate with the segmented control component to realize the automatic retraction and expansion of the stratified sampling unit. A synchronous retracting and rotating component is also arranged between the folding and retracting component and the segmented control component. The synchronous retracting and rotating component is connected to the cylindrical shell, arranged opposite to the segmented control component, and connected to the folding and retracting component, and is used to cooperate with the segmented control component to realize the synchronous steering of the folding and retracting components on both sides, thereby completing the fixed-point control of the sampling position.

2. The sediment sampling device for water conservancy projects according to claim 1, characterized in that: The folding and retracting assembly comprises: a rotating support column, a steering gear, a fixed arm, an automatic tensioning and relaxing assembly, a retracting arm, a protective cylinder, a connecting rotating rod and a retracting and retracting gear. The rotating support column is symmetrically arranged on the inner side of the cylindrical shell and is rotatably connected to the shell wall at the top end of the cylindrical shell. The outer sides of the rotating support columns on both sides are fixedly connected with steering gears connected to the synchronous retracting and rotating assembly. The outer side of the rotating support column is fixedly connected with the fixed arm, the inner side of the other end of the fixed arm is rotatably connected with a connecting rotating rod, the outer side of the connecting rotating rod is fixedly connected with the retracting arm, and the bottom of the other end of the retracting arm is fixedly connected with a protective cylinder connected with the stratified sampling unit, which is used to cooperate with the retracting arm to complete the support of the stratified sampling unit. The retracting arm and the fixed arm are connected by an automatic tensioning and relaxing assembly, which is connected to the segmented control assembly and meshed with the retracting and retracting gear fixedly connected to the outer side of the connecting rotating rod, which is used to cooperate with the segmented control assembly to drive the retracting arm to rotate around the connecting rotating rod to realize the retraction and retraction of the stratified sampling unit.

3. The sediment sampling device for water conservancy projects according to claim 2, characterized in that: The automatic tension and relaxation component includes: a pressure regulating groove, a joint control chamber, a balance tube, a tension and relaxation control tube, a retractable and retractable control piece, a retractable and retractable rack and a directional slide rail. The pressure regulating groove is arranged on the inner side of the rotary support column and is connected to the segmented regulation component. The balance tube fixedly connected to the rotary support column is connected to the joint control chamber arranged on the inner side of the fixed arm, and is used to cooperate with the segmented regulation component to realize the flow of air inside the joint control chamber. The fixed arm is also fixedly connected with a tension and relaxation control tube connected to the joint control chamber. The tension and relaxation control tube is slidably connected inside the tube. The other end of the retractable and retractable control piece is fixedly connected to the retractable and retractable rack. The retractable and retractable rack is meshed with the retractable and retractable gear, and is slidably connected to the directional slide rail fixedly connected to the fixed arm, and is used to cooperate with the movement of the retractable and retractable rack to realize the flipping of the retractable and retractable arm, thereby completing the retraction and extension of the stratified sampling unit.

4. The sediment sampling device for water conservancy projects according to claim 3 is characterized in that: The segmented control component includes: a control seat, a telescopic controller, a pressure adjustment control unit, a fixed column and a delay adjustment control unit. The control seat is arranged on the inner side of a cylindrical shell, and a telescopic controller is symmetrically arranged on the outer side of the top of the control seat. One end of the telescopic controller is fixedly connected to the control seat, and the other end is fixedly connected to the cylindrical shell. The pressure adjustment control unit is slidably connected to the inner side of the pressure control groove. A fixed column is arranged between the pressure adjustment control unit and the control seat. One end of the fixed column is fixedly connected to the control seat, and the other end is slidably connected to the pressure adjustment control unit. A spring is fixedly connected between the fixed column and the pressure adjustment control unit for cooperating with the lifting and lowering of the control seat to realize the flow of air inside the joint control cavity. The control seat is also fixedly connected with a plurality of delay adjustment controls arranged opposite to the synchronous collection and rotation assembly, which are used to cooperate with the lifting and lowering of the control seat to drive the synchronous collection and rotation assembly to realize the synchronous rotation of the rotary support columns on both sides.

5. The sediment sampling device for water conservancy projects according to claim 4, characterized in that: The synchronous collection and rotation component includes: an L-shaped guide rail, a steering rack, a sensing box, a trigger tube, a reaction tube and a sensing piston. The sensing box is arranged on the outer side of the top of the control seat and is fixedly connected to the cylindrical shell. A plurality of trigger tubes arranged opposite to the delay adjustment control unit are fixedly connected on the box wall at the bottom end of the sensing box, which are used to cooperate with the movement of the delay adjustment control unit to realize the flow of air inside the sensing box. A reaction tube is also fixedly connected on the box wall of the sensing box, and a sensing piston is fixedly connected on the outer wall of the other end of the reaction tube. The sensing piston is slidably connected to the sensing groove arranged on the inner side of the steering rack, and a reset spring is fixedly connected between the sensing piston and the steering rack. The steering rack is slidably connected to the L-shaped guide rail fixedly connected to the cylindrical shell, and is meshed with the steering gears on the rotary support columns on both sides, which is used to cooperate with the air flowing inside the sensing box to realize the synchronous rotation of the rotary support columns on both sides, so as to complete the regulation of the position of the stratified sampling unit after expansion.

6. The sediment sampling device for water conservancy projects according to claim 1, characterized in that: The stratified sampling unit includes: a lifting motor, a threaded rod, a lifting platform, a drill rod, a wall cleaning scraper and a batch sampling component. The lifting motor is fixedly connected to the top of the inner side of the protective tube, and threaded rods rotatably connected to the protective tube are arranged on both sides of the lifting motor. The threaded rods on both sides are connected to the output end of the lifting motor through a belt energy guide. The threaded rods on both sides are also threadedly connected to the lifting platform slidably connected to the inner side of the protective tube. A drill rod is fixedly connected to the outer side of the bottom end of the lifting platform, and a batch sampling component is arranged on the inner side of the drill rod for cooperating with the lifting of the lifting platform to drill into the mud and realize synchronous sampling of mud at different depths. A wall cleaning scraper is abutted against the outer side of the drill rod, and the wall cleaning scraper is fixedly connected to the inner side of the bottom end of the protective tube for cooperating with the lifting of the lifting platform to realize cleaning of the drill rod surface.

7. The sediment sampling device for water conservancy projects according to claim 6, characterized in that: The batch sampling assembly includes: a control motor, a control column, a push wheel, a connecting slide, a reset plate, a placement seat, a sampling box, a guide rail and a connecting seat, the control motor is fixedly connected to the top of the inner side of the drill pipe, the output end of the control motor is fixedly connected to the control column, a plurality of push wheels are fixedly connected to the outer side of the control column, a plurality of placement seats slidably connected to the wall of the drill pipe are arranged around the outer side of the push wheel, guide rails are fixedly connected to both sides of the placement seat, the guide rails are slidably connected to the wall of the drill pipe, a sampling box is clamped on the inner side of the placement seat for completing the sampling of sediment in cooperation with the rotation of the push wheel, a reset plate is rotatably connected to the shell wall of the placement seat close to the push wheel, a connecting slide is slidably connected to the outer side of the other end of the reset plate, a spring is fixedly connected between the connecting slide and the reset plate, the other end of the connecting slide is rotatably connected to the connecting seat fixedly connected to the inner side of the drill pipe, and is used to realize the resetting of the placement seat in cooperation with the rotation of the push wheel.

8. The sediment sampling device for water conservancy projects according to claim 1, characterized in that: The positioning and locking unit includes: a supporting and positioning assembly, an installation motor, a lifting control rod, a center console, a synchronous frame and a universal wheel. The installation motor is fixedly connected to the inner top of the supporting platform, the output end of the installation motor is fixedly connected to the lifting control rod, the outer side of the lifting control rod is threadedly connected to the center console, both sides of the bottom end of the center console are fixedly connected to the synchronous frame, the outer side of the bottom end of the synchronous frame is symmetrically provided with universal wheels, the universal wheels are rotatably connected to the synchronous frame, and the center console is also connected to the supporting and positioning assembly arranged around the outer side of the supporting platform, so as to cooperate with the lifting of the center console to realize the positioning and locking of the supporting platform.

9. The sediment sampling device for water conservancy projects according to claim 8, characterized in that: The support and positioning assembly includes: an induction locking assembly, a locking frame, a cooperative lifting tube, a lifting control component, a pressure-sensing control component, a push-pull plate, a support rod and a pressure-driven control component. The locking frame is arranged around the outside of the supporting platform, and a cooperative lifting tube is arranged between the locking frame and the supporting platform. The cooperative lifting tube is fixedly connected to the supporting platform, and a lifting control component is provided on the inner side of one end in a sliding connection. The other end of the lifting control component is fixedly connected to the locking frame, and a pressure-sensing control component is provided on the inner side of the other end of the cooperative lifting tube. The pressure-sensing control component is slidably connected to the support rod on the outer side. A spring is fixedly connected between the support rod and the pressure-sensing control component, the other end of the support rod is fixedly connected to the push-pull plate, a push-pull rod is arranged between the push-pull plate and the center console, one end of the push-pull rod is rotatably connected to the center console, and the other end is rotatably connected to the locking frame, which is used to cooperate with the movement of the center console to realize the lifting and lowering of the locking frame and complete the support positioning of the supporting platform. An induction locking assembly is also arranged between the locking frame and the supporting platform, and a pressure-driven control component arranged opposite to the induction locking assembly is fixedly connected on the push-pull plate, which is used to cooperate with the subsequent movement of the push-pull plate to realize the locking of the locking frame.

10. The sediment sampling device for water conservancy projects according to claim 9, characterized in that: The induction locking assembly includes: a fixed tube, a cavity, a pressure-stabilizing tube, a connecting piston, a locking nail and a positioning retaining ring. The fixed tube is fixedly connected to the supporting platform, one end of which is arranged opposite to the pressure drive control unit, and the other end is slidingly connected inside with a pressure-stabilizing tube. The other end of the pressure-stabilizing tube is fixedly connected to the locking frame and connected to the cavity arranged on the inner side of the locking frame. A plurality of inclined locking plugs are arranged on the inner side of the cavity. The inner side of the locking plug is fixedly connected to the locking frame, and a connecting piston is slidingly connected inside. The outer side of the bottom end of the connecting piston is fixedly connected with a locking nail, and the other end is connected to the locking plug through a spring. The inner side of the locking plug is also fixedly connected with a positioning retaining ring for positioning the connecting piston during movement.

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