River sediment sampling device

Abstract

The application discloses a riverway sediment sampling device, relates to the technical field of riverway sediment sampling, and comprises a floating component, a collecting cylinder and a limiting component. The collecting cylinder is hingedly connected with cover plates at two ends. The cover plates are provided with lug plates. The limiting component is vertically connected to the outer wall surface of the collecting cylinder and is used for limiting the lug plates so that the cover plates are opened with the ports of the collecting cylinder. The floating component is matched with the limiting component. The buoyancy of water is used as the trigger power for closing the cover plates. The automation of the sampling process is realized. When the collecting cylinder is lowered to the predetermined water depth, the buoyancy of the floating ball is transmitted to the limiting component through the ropes. The clamping plate mechanism rotates oppositely and releases the lug plates. The cover plates are automatically closed under the action of the return springs. Manual remote triggering is not needed. The convenience and reliability of the sampling operation are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of river sediment sampling technology, specifically to a river sediment sampling device. Background Technology

[0002] In river hydrological monitoring and sediment transport studies, suspended sediment sampling is a fundamental method for obtaining key data such as sediment particle size and concentration. Existing suspended sediment sampling equipment mainly includes horizontal samplers, which typically consist of a collection cylinder open at both ends and cover plates hinged to both ends of the cylinder. In practice, workers lower the sampler to a predetermined water depth using ropes. Once the sampler reaches the designated position, a trigger device is manually pulled to close the cover plates, thus sealing the water and sediment inside the cylinder and completing the sampling.

[0003] However, this traditional horizontal sampler has the following technical drawbacks: the closing operation of its cover plate relies heavily on manual remote control via ropes or triggering mechanisms. This not only demands a high level of experience from the operators but also makes it difficult to accurately determine the closing timing under complex water flow conditions, easily leading to untimely or incomplete closure of the cover plate, thus affecting the representativeness and success rate of the sampling. Furthermore, the manual triggering method makes the sampling process susceptible to human interference, preventing automated operation and failing to meet the demands of modern hydrological monitoring for efficient and accurate sampling. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a river sediment sampling device that solves the technical problem that the closing operation of the existing cover plate relies heavily on manual remote control via ropes or triggering mechanisms, making it difficult to accurately determine the closing timing. This can easily lead to the cover plate not closing in time or not closing properly, thus affecting the representativeness and success rate of the sampling.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a river sediment sampling device, comprising a float assembly, a collection cylinder, and a limiting assembly. The collection cylinder has cover plates hinged to both ends, and the cover plates are provided with ear plates. The limiting assembly is vertically connected to the outer wall of the collection cylinder to limit the ear plates, thereby opening the port of the collection cylinder. The float assembly is connected to the limiting assembly and is used to pull the limiting assembly by the buoyancy of water, thereby closing the port of the collection cylinder. A return spring is provided between the cover plate and the collection cylinder for the cover plate to close the port of the collection cylinder. The limiting component includes a pair of locking plate mechanisms and a first spring. The pair of locking plate mechanisms are hinged to the outer wall of the collecting cylinder and located between the pair of cover plates to prevent the cover plates from flipping. The first spring is connected between the pair of locking plate mechanisms. A linkage mechanism is connected between the pair of locking plate mechanisms. The linkage mechanism is used to drive the pair of locking plate mechanisms to rotate in opposite directions. A rope for connecting the float assembly is provided on the linkage mechanism.

[0006] In some embodiments, the linkage mechanism includes a pair of first links and a pair of second links, the pair of first links being hinged to each other and one end of each link being hinged to a pair of the clamping mechanisms, one end of each pair of second links being hinged to a pair of first links and the other end of each link being hinged to each other, and the rope being connected to the hinge point of the pair of second links.

[0007] In some embodiments, the clamping mechanism includes a vertical rod and a triangular plate. The vertical rod is hinged to the outer wall of the collecting cylinder, and the triangular plate is disposed on the vertical rod and close to the wall of the ear plate. The right-angled side of the triangular plate is used to block the ear plate.

[0008] In some embodiments, the float assembly includes a float and a discharge pipe. The float has a support plate inside, and a reel for adjusting the rope length is rotatably mounted on the support plate. The discharge pipe is disposed on the float, and the rope passes through the discharge pipe and is wound around the reel. A shaft is rotatably mounted on the float, one end of which is connected to the reel, and the other end of which is exposed outside the float and has a handle.

[0009] In some embodiments, the discharge pipe has a threaded hole, and a clamping bolt for clamping the rope is screwed into the threaded hole so that the rope is confined within the discharge pipe.

[0010] In some embodiments, a sealing membrane for sealing the discharge pipe is provided at the end of the discharge pipe away from the float. The sealing membrane has a through hole, and the rope passes through the through hole and is interference-fitted with the through hole to seal the float.

[0011] In some embodiments, a carrier cylinder is further included, which is vertically disposed on the outer wall of the collection cylinder. The limiting component is located inside the carrier cylinder. The carrier cylinder has a pair of openings, and a pair of ear plates pass through the openings so that the limiting component limits the ear plates.

[0012] In some embodiments, a through hole is provided on the support cylinder between a pair of openings, and the rope passes through the through hole to expose the float assembly outside the support cylinder.

[0013] In some embodiments, a connecting pipe is further included, wherein an external thread is provided on the outer wall surface of one end of the connecting pipe, and an internal thread is provided on the inner wall surface of the other end of the connecting pipe and the inner wall surface of the end of the bearing cylinder away from the collecting cylinder.

[0014] Beneficial Effects: This invention provides a river sediment sampling device. By setting up a float assembly and a limiting assembly in conjunction, this invention utilizes the buoyancy of water as the trigger force for the cover to close, thus automating the sampling process. This is superior to remote control, which is unaffected by distance in signal transmission and reception, and is not limited by charging power. When the collection tube is lowered to the predetermined water depth, the buoyancy of the float is transmitted to the limiting assembly through a rope, causing the locking mechanism to rotate in opposite directions and release the lugs. The cover then automatically closes under the action of the return spring, eliminating the need for manual remote triggering. This significantly improves the convenience and reliability of the sampling operation. By linking the closing timing of the cover to the sampling water depth, this invention utilizes buoyancy to automatically trigger the closing after the device reaches the set depth, effectively solving the problems of traditional horizontal samplers where manual operation makes it difficult to accurately determine the closing timing and where the cover is easily affected by water flow interference, resulting in untimely or incomplete closure. This ensures the accuracy of the sampling process and the representativeness of the samples. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a river sediment sampling device according to the present invention.

[0016] Figure 2 This is a schematic diagram of the structure of a river sediment sampling device according to the present invention.

[0017] Figure 3 This is a schematic diagram of the structure of a river sediment sampling device according to the present invention.

[0018] In the diagram: 1. Collection cylinder; 2. Cover plate; 3. Ear plate; 4. Return spring; 5. First spring; 6. Rope; 7. First connecting rod; 8. Second connecting rod; 9. Upright pole; 10. Triangular plate; 11. Float; 12. Discharge pipe; 13. Bearing plate; 14. Winding reel; 15. Shaft; 16. Handle; 17. Clamping bolt; 18. Sealing membrane; 19. Bearing cylinder; 20. Opening; 21. Through hole; 22. Connecting pipe. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1-3The present invention provides a technical solution: a river sediment sampling device, including a float assembly, a collection cylinder 1 and a limiting assembly. The collection cylinder 1 is hinged to two ends with a cover plate 2, and the cover plate 2 is provided with an ear plate 3. The limiting assembly is vertically connected to the outer wall of the collection cylinder 1 and is used to limit the ear plate 3 so that the cover plate 2 and the port of the collection cylinder 1 are open. The float assembly is connected to the limiting assembly and is used to pull the limiting assembly by the buoyancy of water so that the cover plate 2 closes the port of the collection cylinder 1. A return spring 4 is provided between the cover plate 2 and the collection cylinder 1 for the cover plate 2 to close the port of the collection cylinder 1.

[0021] Rotate cover plate 2 to open it, and limit ear plate 3 through limiting component, thereby opening both ends of collection cylinder 1. Place collection cylinder 1 into water and align it with the water flow direction of the river, allowing suspended sediment in the river to enter collection cylinder 1 and be blocked by filter screen. As collection cylinder 1 falls to the limit length of float component, the buoyancy of water causes float component to pull limiting component, thereby releasing ear plate 3. Then, return spring 4 pulls cover plate 2 to close both ends of collection cylinder 1, thus completing the sampling and collection of suspended sediment in the river.

[0022] Please see Figure 2 The limiting component includes a pair of locking plate mechanisms and a first spring 5. The pair of locking plate mechanisms are hinged to the outer wall of the collecting cylinder 1 and located between the cover plates 2, and are used to limit the flipping of the cover plates 2. The first spring 5 is connected between the pair of locking plate mechanisms. A linkage mechanism is connected between the pair of locking plate mechanisms. The linkage mechanism is used to drive the pair of locking plate mechanisms to rotate in opposite directions. A rope 6 for connecting the float assembly is provided on the linkage mechanism.

[0023] The linkage mechanism is a scissor telescopic rod structure. Under the buoyancy of the water, the float assembly pulls the rope 6, which drives the linkage mechanism. This causes the linkage mechanism to drive a pair of locking plate mechanisms to rotate in opposite directions, thereby separating the locking plate mechanisms from the ear plate 3, and allowing the cover plate 2 to rotate.

[0024] Please see Figure 2 In this embodiment, the linkage mechanism is further configured to include a pair of first linkages 7 and a pair of second linkages 8. The pair of first linkages 7 are hinged to each other, and one end of each linkage is hinged to a pair of clamping mechanisms. One end of each pair of second linkages 8 is hinged to the pair of first linkages 7, and the other end of each linkage is hinged to each other. The rope 6 is connected to the hinge point of the pair of second linkages 8.

[0025] Rope 6 pulls upward at the hinge joint of a pair of second connecting rods 8, causing the first connecting rod 7 and the second connecting rod 8 to move upward. During the upward movement of the first connecting rod 7 and the second connecting rod 8, the hinge joint of the second connecting rod 8 and the first connecting rod 7 rotates inward, causing the hinge joint of the first connecting rod 7 and the clamping plate mechanism to move towards each other. This causes the first connecting rod 7 to drive the clamping plate mechanism to rotate towards each other, causing the clamping plate to separate from the ear plate 3.

[0026] Please see Figure 2 In this embodiment, the clamping mechanism is further configured to include a vertical rod 9 and a triangular plate 10. The vertical rod 9 is hinged to the outer wall of the collecting cylinder 1, and the triangular plate 10 is disposed on the vertical rod 9 and close to the wall of the ear plate 3. The right-angled side of the triangular plate 10 is used to block the ear plate 3.

[0027] When the clamping mechanism limits the ear plate 3, the ear plate 3 is in contact with the triangular plate 10. The two ends of the first spring 5 are connected to the upright rod 9 respectively. The first spring 5 pushes the upright rod 9 to rotate in the opposite direction, so that the triangular plate 10 always limits the ear plate 3 and prevents the cover plate 2 from driving the ear plate 3 to rotate.

[0028] When the clamping mechanism does not limit the ear plate 3, the first connecting rod 7 pulls the first connecting rod 7 to drive the upright rod 9 to rotate in opposite directions, thereby causing the triangular plate 10 to separate from the ear plate 3.

[0029] Please see Figure 3 In this embodiment, the float assembly includes a float 11 and a discharge pipe 12. The float 11 is provided with a support plate 13. A winding reel 14 for adjusting the length of the rope 6 is rotatably mounted on the support plate 13. The discharge pipe 12 is provided on the float 11. The rope 6 passes through the discharge pipe 12 and is wound around the winding reel 14. A shaft 15 is rotatably mounted on the float 11. One end of the shaft 15 is connected to the winding reel 14, and the other end of the shaft 15 is exposed outside the float 11 and is provided with a handle 16.

[0030] In order to enable the collection cylinder 1 to collect suspended sediment samples from river channels at any depth, the rope 6 is pulled to move the rope 6 out of the float so that the collection cylinder 1 can be submerged into the river channel for the length of the rope 6. The length of the rope 6 is the node where the float converts the buoyancy of the water source into tension. When retrieving the rope 6, it is only necessary to turn the handle 16 so that the handle 16 drives the reel 14 to wind up and retrieve the rope 6.

[0031] Please see Figure 2 In this embodiment, the discharge pipe 12 is further configured to have a threaded hole, and a clamping bolt 17 for clamping the rope 6 is screwed into the threaded hole so that the rope 6 is limited inside the discharge pipe 12.

[0032] To prevent the rope 6 from unwinding after the length is adjusted, the clamping bolt 17 is rotated to press the rope 6 tightly inside the discharge pipe 12, thus preventing the rope 6 from unwinding.

[0033] Please see Figure 3 In this embodiment, the discharge pipe 12 is further provided with a sealing membrane 18 for sealing the discharge pipe 12 at the end away from the float 11. The sealing membrane 18 has a through hole, and the rope 6 passes through the through hole and is interference-fitted with the through hole so as to seal the float 11.

[0034] The float 11 is sealed by the sealing membrane 18 to prevent water from entering the float 11 and affecting buoyancy. Since the sealing membrane 18 is made of flexible material, it can deform during the process of the rope 6 being moved out or retrieved into the float 11. Since the rope 6 and the through hole are interference fit, the sealing membrane 18 always seals the discharge pipe 12 even if the rope 6 moves in the through hole.

[0035] Please see Figure 1-2 In this embodiment, it is further configured to include a carrier cylinder 19, which is vertically disposed on the outer wall of the collection cylinder 1. The limiting component is located inside the carrier cylinder 19. A pair of openings 20 are provided on the carrier cylinder 19, and a pair of ear plates 3 pass through the openings 20 so that the limiting component limits the ear plates 3.

[0036] The bearing cylinder 19 serves to protect the limiting component, preventing impurities flowing in the river from impacting the limiting component and preventing the ear plate 3 from being released prematurely.

[0037] Please see Figure 1-2 In this embodiment, a through hole 21 is provided on the support cylinder 19 between a pair of openings 20, and the rope 6 passes through the through hole 21 so that the float assembly is exposed on the support cylinder 19.

[0038] Please see Figure 1-2 In this embodiment, it is further configured to include a connecting pipe 22, with an external thread on the outer wall of one end of the connecting pipe 22, and internal threads on the inner wall of the other end of the connecting pipe 22 and the inner wall of the end of the bearing cylinder 19 away from the collecting cylinder 1.

[0039] To make it easier for users to operate the collection tube 1, the external thread of the connecting pipe 22 can be screwed onto the internal thread of the bearing tube 19. When it is necessary to lengthen the connecting pipe 22, the external thread of another connecting pipe 22 can be screwed onto the internal thread of the previous connecting pipe 22. The user can adjust the direction of the collection tube 1 by holding the connecting pipe 22 so that the collection tube 1 is aligned with the direction of the water flow in the river.

[0040] Its detailed connection method is a well-known technology in this field. The following mainly introduces the working principle and process, and the specific work is as follows.

[0041] Working principle: During use, rotate the cover plate 2 so that the ear plate 3 passes through the opening 20 and contacts the right-angle side of the triangular plate 10. Adjust the length of the rope 6 according to the desired river depth for collecting suspended sediment, and pull the rope 6 to remove it from the reel 14 until the rope 6 length matches the desired river depth. Screw the external thread of the connecting pipe 22 onto the internal thread of the carrying cylinder 19. Lengthen the connecting pipe 22 according to the desired river depth, and screw the external thread of another connecting pipe 22 onto the internal thread of the first connecting pipe 22. The user adjusts the direction of the collecting cylinder 1 by holding the connecting pipe 22, aligning the collecting cylinder 1 with the direction of the river flow, thus collecting the suspended sediment in the river. The suspended sediment enters the collection cylinder 1 and is blocked by the filter screen. After falling to the depth of the river channel where the suspended sediment needs to be collected, the buoy 11 is pulled by the buoyancy of the water source, which pulls the rope 6. The rope 6 pulls upward at the hinge of a pair of second connecting rods 8, which in turn causes the first connecting rod 7 and the second connecting rod 8 to move upward. During the upward movement of the first connecting rod 7 and the second connecting rod 8, the hinge end of the second connecting rod 8 and the first connecting rod 7 rotates inward, causing the hinge end of the first connecting rod 7 and the column to move towards each other. This causes the first connecting rod 7 to drive the column to rotate towards each other, causing the triangular plate 10 to separate from the ear plate 3, and then releasing the ear plate 3. As a result, the return spring 4 pulls the cover plate 2 to close both ends of the collection cylinder 1, thus completing the sampling and collection of suspended sediment in the river channel.

[0042] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

Claims

1. A device for sampling river sediment, comprising a float assembly, a collection cylinder (1), and a limiting assembly, characterized in that, The collecting cylinder (1) is hinged to both ends with cover plates (2), and the cover plates (2) are provided with ear plates (3). The limiting component is vertically connected to the outer wall of the collecting cylinder (1) and is used to limit the ear plates (3) so that the cover plate (2) and the port of the collecting cylinder (1) are opened. The float component is connected to the limiting component and is used to pull the limiting component by the buoyancy of the water so that the cover plate (2) closes the port of the collecting cylinder (1). A return spring (4) is provided between the cover plate (2) and the collecting cylinder (1) for the cover plate (2) to close the port of the collecting cylinder (1). The limiting component includes a pair of locking plate mechanisms and a first spring (5). The pair of locking plate mechanisms are hinged to the outer wall of the collecting cylinder (1) and located between the pair of cover plates (2) to prevent the cover plates (2) from flipping. The first spring (5) is connected between the pair of locking plate mechanisms. A linkage mechanism is connected between the pair of locking plate mechanisms. The linkage mechanism is used to drive the pair of locking plate mechanisms to rotate in opposite directions. A rope (6) for connecting the float assembly is provided on the linkage mechanism.

2. The device for river sediment sampling according to claim 1, characterized in that... The linkage mechanism includes a pair of first links (7) and a pair of second links (8). The pair of first links (7) are hinged to each other, and one end is respectively hinged to a pair of the clamping mechanisms. One end of the pair of second links (8) is hinged to a pair of first links (7), and the other end is hinged to each other. The rope (6) is connected to the hinge of the pair of second links (8).

3. The device for river sediment sampling according to claim 1, characterized in that... The clamping mechanism includes a vertical rod (9) and a triangular plate (10). The vertical rod (9) is hinged to the outer wall of the collecting cylinder (1). The triangular plate (10) is disposed on the vertical rod (9) and close to the wall of the ear plate (3). The right-angled side of the triangular plate (10) is used to block the ear plate (3).

4. A river sediment sampling device according to claim 2, characterized in that... The float assembly includes a float (11) and a discharge pipe (12). The float (11) has a support plate (13) inside. A winding reel (14) for adjusting the length of the rope (6) is rotatably mounted on the support plate (13). The discharge pipe (12) is located on the float (11). The rope (6) passes through the discharge pipe (12) and is wound around the winding reel (14). A shaft (15) is rotatably mounted on the float (11). One end of the shaft (15) is connected to the winding reel (14), and the other end of the shaft (15) is exposed outside the float (11) and has a handle (16).

5. A river sediment sampling device according to claim 4, characterized in that... The discharge pipe (12) is provided with a threaded hole, and a clamping bolt (17) for clamping the rope (6) is screwed into the threaded hole so that the rope (6) is limited in the discharge pipe (12).

6. A river sediment sampling device according to claim 4, characterized in that... The discharge pipe (12) is provided with a sealing membrane (18) for sealing the discharge pipe (12) at one end away from the float (11). The sealing membrane (18) has a through hole, and the rope (6) passes through the through hole and is press-fitted with the through hole to seal the float (11).

7. A river sediment sampling device according to claim 1, characterized in that... It also includes a support cylinder (19), which is vertically disposed on the outer wall of the collection cylinder (1). The limiting component is located inside the support cylinder (19). A pair of openings (20) are provided on the support cylinder (19), and a pair of ear plates (3) pass through the openings (20) so that the limiting component limits the ear plates (3).

8. A river sediment sampling device according to claim 8, characterized in that... A through hole (21) is provided on the support cylinder (19) between a pair of openings (20), and the rope (6) passes through the through hole (21) so that the float assembly is exposed on the support cylinder (19).

9. A river sediment sampling device according to claim 8, characterized in that... It also includes a connecting pipe (22), one end of which has an external thread on its outer wall surface, and the other end of the connecting pipe (22) and the inner wall surface of the bearing cylinder (19) away from the collecting cylinder (1) are respectively provided with internal threads.

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