Shearing and collecting mechanism and wetland bottom mud sampling vehicle

Abstract

The invention relates to a shearing and collecting mechanism and a wetland sediment sampling vehicle. The shearing and collecting mechanism comprises a movable carrier; the floater is mounted on the movable carrier and is used for providing buoyancy; the lifting mechanism is mounted on the movable carrier; the top surface of a supporting plate of the shearing and collecting mechanism is fixed to the lifting end of the lifting mechanism, the shearing and collecting mechanism comprises a multi-layer cylinder and a rotating power source, an outer-layer shearing cylinder and a middle-layer shearing cylinder are arranged in the multi-layer cylinder, triangular shearing teeth with downward tips and cutting edges are arranged at the bottom of the multi-layer cylinder, and the two layers of shearing teeth are arranged in a staggered mode in the circumferential direction; when the rotary power source drives the two cylinders to do opposite-direction relative movement, a shearing effect similar to scissors is formed, crisscrossed tough plant roots can be efficiently cut off, disturbance or overall pulling of a bottom mud layer caused by root traction in a traditional sampling process is avoided, the original structure fidelity of a sample is remarkably improved, and the sampling accuracy is improved. The sectional type inner-layer sampling cylinder is arranged in the middle-layer shearing cylinder so as to realize layered sampling.

Description

Technical Field

[0001] This invention relates to the field of sampling device technology, and more particularly to a shearing collection mechanism and a wetland sediment sampling vehicle. Background Technology

[0002] Wetland sediment is a complex medium formed by the long-term sedimentation and mixing of substances such as silt, clay, organic matter, and minerals. Its composition and structure can effectively reflect the evolution of wetland ecosystems and the status of environmental pollution. Therefore, obtaining representative sediment samples is crucial for conducting wetland ecological environment assessments, pollution source tracing, and remediation. However, wetland environments are generally rich in plant roots. Traditional sediment sampling devices often fail to effectively sever these roots during insertion or extraction, resulting in a pulling effect that disturbs, displaces, or even uproots the sediment layer. This severely damages the original structure of the sample, thus affecting the accurate determination of sediment composition and sedimentary history.

[0003] While some improved solutions for sediment stratification sampling exist in the prior art, such as the "Sediment Stratification Sampling Device and Method" published in CN119643223A, which uses a cutting mechanism consisting of a moving blade and a stationary blade at the end of a rectangular cylinder to cut plant roots by reciprocating friction. Due to the rectangular cross-section of the cylinder, the moving and stationary blades in this patent are necessarily straight, and are divided into four segments corresponding to the four sides of the rectangle. Although the power and transmission mechanism is not explicitly given in the patent, it must consist of four parts, driven independently to make the four moving blades reciprocate. This mechanism is complex and inefficient.

[0004] Furthermore, in actual sampling, sediment typically exhibits a distinct stratified structure, with different depths containing environmental information from different periods. To ensure the scientific validity and accuracy of subsequent analysis results, it is essential to preserve the original stratified state of the sediment as much as possible. Traditional sampling equipment generally lacks non-destructive methods for separating stratified samples after sampling, usually requiring external tools to scrape or push the sediment from the integrated sampling tube, which can easily damage the stratified structure of the sediment sample.

[0005] Therefore, this case is brought. Summary of the Invention

[0006] The purpose of this invention is to provide a shearing and sampling mechanism and a wetland sediment sampling vehicle, which has a reasonable structure, is easy to operate, can effectively cut off plant roots while maintaining the integrity of sediment stratification, and has good wetland mobility, so as to overcome the above-mentioned defects in the prior art.

[0007] To achieve the above objectives, the technical solution of the present invention is as follows:

[0008] A shearing and acquisition mechanism, comprising: A support plate, wherein a rotating support frame is provided on the bottom surface of the support plate; The multi-layered cylindrical body comprises, from the outside in, an outer shearing cylinder, a middle shearing cylinder, and an inner sampling cylinder. Each layer of the cylinder is open at both the top and bottom and is hollow. The tops of the outer and middle shearing cylinders are rotatably connected to a rotating support frame, allowing them to rotate around their own central axis. The bottoms of the outer and middle shearing cylinders are provided with shearing teeth. The inner sampling cylinder is detachably mounted on the inner wall of the middle shearing cylinder. A rotary power source, fixed on a rotary support frame, is used to drive the outer shearing cylinder and the middle shearing cylinder to rotate around the central axis, and the two rotate in opposite directions.

[0009] Furthermore, the outer shearing cylinder includes an outer shearing upper cylinder and an outer shearing lower cylinder that are detachably and fixedly connected. The top opening of the outer shearing upper cylinder is provided with an annular edge, and the rotating support frame is provided with an annular groove that matches the annular edge. The bottom opening of the outer shearing lower cylinder is provided with shearing teeth.

[0010] Furthermore, the intermediate shearing cylinder includes an upper intermediate shearing cylinder and a lower intermediate shearing cylinder. The upper intermediate shearing cylinder has an annular edge two at its top opening and an annular groove two matching the annular edge two at the rotating support frame. The lower intermediate shearing cylinder has shearing teeth at its bottom opening.

[0011] Furthermore, the inner sampling cylinder is divided into multiple sections from top to bottom, with the uppermost section being an abutment ring and the remaining sections being sampling rings. A vertical mounting hole is provided on the inner wall of the sampling ring, and multiple sampling rings are rotatably connected to the same rotating shaft through the mounting hole on them. The inner wall of the middle shear cylinder is provided with a step. The upper end face of the contact ring is used to abut against the bottom surface of the support plate, the lower end face is used to abut against the adjacent sampling ring, and the lower end face of the bottommost sampling ring is used to abut against the step.

[0012] Furthermore, a rotary transmission structure is provided between the rotary power source and the multi-layer cylinder, the rotary transmission structure including a horizontal push rod, a connecting rod one and a connecting rod two; The rotary power source adopts a linear actuator, which includes a piston rod that can extend and retract linearly. The rod end of the piston rod is fixedly connected to the middle of the horizontal push rod. The two ends of the horizontal push rod are respectively hinged to one end of connecting rod one and one end of connecting rod two. The other end of connecting rod one is hinged to the outer wall of the outer shearing cylinder, and the other end of connecting rod two is hinged to the outer wall of the middle shearing cylinder.

[0013] Furthermore, the shearing teeth are inverted triangular in shape and have sharpened edges; the shearing teeth of the outer shearing cylinder and the shearing teeth of the middle shearing cylinder are arranged in a staggered manner.

[0014] A wetland sediment sampling vehicle includes: Movable carrier; A float, mounted on a movable carrier, for providing buoyancy; A lifting mechanism, which is mounted on a movable carrier; In the aforementioned shearing and acquisition mechanism, the top surface of the support plate of the shearing and acquisition mechanism is fixed to the lifting end of the lifting mechanism.

[0015] Furthermore, the movable carrier includes several wheels, each of which is equipped with a drive source.

[0016] Furthermore, the wheel includes a central shaft and an annular rim, with several spokes between the central shaft and the annular rim, and raised strips arranged on the outer wall of the annular rim.

[0017] Furthermore, the lifting mechanism includes: The mounting base has a guide groove and is fixed with bracket one and bracket two; The worm gear is rotatably connected to the support. A transmission rod, which is rotatably connected to bracket two; A worm drive unit, which is fixed on a bracket, is used to drive the worm to rotate; A worm gear, which is fixed to the transmission rod and meshes with the worm; A gear, which is fixed to a transmission rod; The guide rail is slidably connected in the guide groove and can slide vertically along the guide groove. The bottom of the guide rail is fixed to the top surface of the support plate of the shearing and collecting mechanism. The guide rail is provided with a rack that meshes with a gear.

[0018] The advantages of this invention are:

[0019] 1. By setting up an outer shearing cylinder and a middle shearing cylinder, and equipping the bottom of each cylinder with triangular shearing teeth with downward-pointing tips and cutting edges, and with the two layers of shearing teeth arranged alternately in the circumferential direction, when the two cylinders move relative to each other in opposite directions, a shearing action similar to scissors is formed, which can efficiently cut through the crisscrossing tough plant root system, avoiding the disturbance of the bottom mud layer or the overall uplift caused by root pulling in the traditional sampling process, and significantly improving the fidelity of the original structure of the sample.

[0020] 2. A multi-layered cylindrical structure is adopted, with the inner sampling cylinder located inside the middle and outer shearing cylinders. Both the middle and outer shearing cylinders are connected by fasteners to achieve a detachable, separate structure. By sequentially removing the lower halves of the outer and middle shearing cylinders, the inner sampling cylinder can be easily removed. Furthermore, utilizing the segmented structure of the inner sampling cylinder, the corresponding sediment layer can be rotated around a pivot axis to extract the sample from that layer. This layered sediment extraction structure not only eliminates the need for auxiliary tools but also avoids the problem of auxiliary tools potentially damaging the original layered structure of the sample when using traditional integrated sediment sampling cylinders.

[0021] 3. It is integrated into a mobile carrier equipped with a float and special wheels (such as a wide wetland wheel with propulsion blades), which can travel stably in areas where conventional equipment cannot pass through, such as shallow water, swamps, and silt; the lifting mechanism adopts a worm gear self-locking structure to ensure stable position during sampling and improve the reliability of field operations. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural schematic diagram of the wetland sediment sampling vehicle in the embodiment; Figure 2 This is a three-dimensional assembly diagram of the lifting mechanism and the shearing acquisition mechanism in the embodiment; Figure 3 This is a three-dimensional structural schematic diagram of the shearing acquisition mechanism in the embodiment; Figure 4 for Figure 3 Front view diagram; Figure 5 for Figure 3 A top-view diagram; Figure 6 This is a three-dimensional structural diagram of the multi-layer cylinder in the embodiment; Figure 7 This is a three-dimensional structural diagram of the outer shear cylinder in the embodiment; Figure 8 This is a three-dimensional structural diagram of the middle layer shear cylinder in the embodiment; Figure 9 for Figure 3 A cross-sectional view; Figure 10 This is a three-dimensional structural diagram of the inner sampling cylinder in the embodiment; Figure 11 This is a schematic diagram illustrating the layered sampling of bottom mud by the inner sampling tube in the embodiment. Figure 12 This is a schematic diagram of another state in which the inner sampling tube is used to collect bottom mud in a layered manner in the embodiment; Figure 13 This is a cross-sectional schematic diagram of the middle layer shear cylinder in the embodiment; Figure 14This is a schematic diagram of the structure of the wheels of the movable carrier in the embodiment; Label Explanation 1. Movable carrier; 2. Wheels; 201. Spokes; 202. Raised strips; 3. Drive motor; 4. Lifting mechanism; 401. Mounting base; 402. Guide groove; 403. Bracket one; 404. Bracket two; 405. Worm gear; 406. Transmission rod; 407. Lifting motor; 408. Worm wheel; 409. Gear; 410. Guide rail; 411. Rack; 5. Shearing and collecting mechanism; 501. Support plate; 502. Rotating support frame; 503. Outer shearing cylinder; 5031. Shearing teeth; 5032. Ear plate; 5033. Annular edge one; 5034. 5035. Outer shearing upper cylinder; 5036. Outer shearing lower cylinder; 5037. Relief hole; 5038. Hinge point with connecting rod one; 504. Middle shearing cylinder; 5041. Shearing tooth; 5042. Step; 5043. Ear plate; 5044. Annular edge two; 5045. Middle shearing upper cylinder; 5046. Middle shearing lower cylinder; 5047. Hinge point with connecting rod two; 505. Inner sampling cylinder; 5051. Contact ring; 5052. Sampling ring; 5053. Rotating shaft; 506. Electric cylinder; 507. Horizontal push rod; 508. Connecting rod one; 509. Connecting rod two; 6. Float. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to embodiments. It should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., used in this document indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0024] This embodiment proposes a wetland sediment sampling vehicle, such as... Figure 1 As shown, it includes a movable carrier 1, a float 6, a lifting mechanism 4, and a shearing and collecting mechanism 5.

[0025] The mobile carrier 1 includes four wheels 2, each equipped with a drive motor 3. Adjusting the drive motors 3 allows the vehicle to move forward, backward, and turn on wetlands. Two floats 6 are symmetrically mounted on the mobile carrier 1 to provide buoyancy. If rivers, lakes, or other bodies of water rise and the wetland area is covered by water, the floats 6 ensure the vehicle does not sink and become unusable. In this embodiment, the wheel 2 includes a central shaft and an annular rim. Several spokes 201 are provided between the central shaft and the annular rim, and the outer wall of the annular rim is decorated with raised strips 202. When moving in water, the spokes 201 are used for propulsion, while the raised strips 202 on the outer circumference of the annular rim enhance the mobility of the mobile carrier 1 in muddy wetlands.

[0026] like Figure 2 As shown, the lifting mechanism 4 is mounted on the movable carrier 1 and is used to drive the shearing and sampling mechanism 5 to perform lifting and lowering actions. When the shearing and sampling mechanism 5 is lowered, it can collect soil samples. The lifting mechanism 4 includes a mounting base 401, a worm gear 405, a transmission rod 406, a lifting motor 407, a worm wheel 408, a gear 409, and a guide rail 410. The mounting base 401 is U-shaped, with a vertical guide groove 402 in the middle. A first bracket 403 and a second bracket 404 are fixed to the top surface of the mounting base 401. The two ends of the worm gear 405 are rotatably connected to the first bracket 403 via bearings. A lifting motor 407 is fixed to the first bracket 403 to drive the worm gear 405 to rotate. The two ends of the transmission rod 406 are rotatably connected to the second bracket 404 via bearings. A worm wheel 408 and a gear 409 are fixed to the transmission rod 406. The worm wheel 408 meshes with the worm gear 405. The guide rail 410 is slidably connected in the guide groove 402 and can slide vertically along the guide groove 402. A rack 411 meshes with the gear 409 on the guide rail 410. The shearing and acquisition mechanism 5 is fixed on the guide rail 410. The worm gear 405 is driven to rotate by the lifting motor 407. The power passes through the worm wheel 408, transmission rod 406, gear 409 and rack 411 in sequence, and then drives the guide rail 410 to move vertically up and down along the guide groove 402, thereby driving the shearing and acquisition mechanism 5 to perform lifting and lowering actions.

[0027] By utilizing the self-locking capability of the transmission mechanism consisting of worm 405 and worm wheel 408, the shearing and collecting mechanism 5 can remain in its original position and not fall due to its own weight when the lifting motor 407 has no power output.

[0028] like Figures 3 to 13As shown, the shearing and sampling mechanism 5 includes a support plate 501, a multi-layered cylinder, and a rotating power source. The top surface of the support plate 501 is fixedly connected to the bottom end of the guide rail 410, and a rotating support frame 502 is provided on the bottom surface of the support plate 501. The multi-layered cylinder includes, from the outside to the inside, an outer shearing cylinder 503, a middle shearing cylinder 504, and an inner sampling cylinder 505. Each cylinder is open at both the top and bottom and is hollow. The tops of the outer shearing cylinder 503 and the middle shearing cylinder 504 are rotatably connected to the rotating support frame 502, allowing the outer shearing cylinder 503 and the middle shearing cylinder 504 to rotate around their own central axis. The bottoms of the outer shearing cylinder 503 and the middle shearing cylinder 504 are provided with shearing teeth 5031 and 5041, respectively. The inner sampling cylinder 505 is detachably installed on the inner wall of the middle shearing cylinder 504. The rotational power source is fixed on the rotational support frame 502 and is used to drive the outer shearing cylinder 503 and the middle shearing cylinder 504 to rotate around the central axis, with their rotation directions being opposite. By setting the outer shearing cylinder 503 and the middle shearing cylinder 504 and equipping their bottoms with shearing teeth, when the outer shearing cylinder 503 and the middle shearing cylinder 504 move relative to each other in opposite directions, the inner and outer shearing teeth form a shearing action similar to scissors, which can efficiently cut through the crisscrossing and tough plant root system, avoiding the disturbance of the bottom mud layer or the overall uplift caused by root pulling in the traditional sampling process, and significantly improving the fidelity of the original structure of the sample. When the lifting mechanism 4 drives the guide rail 410 to descend, it provides downward pressure to the entire shearing and collection mechanism 5, allowing the wetland bottom mud to enter the sampling cylinder and complete the sampling.

[0029] A rotary transmission structure is provided between the rotary power source and the multi-layer cylinder. This rotary transmission structure includes a horizontal push rod 507, a first connecting rod 508, and a second connecting rod 509. The rotary power source is an electric cylinder 506, which includes a linearly extendable piston rod. The end of the piston rod is fixedly connected to the middle of the horizontal push rod 507. Both ends of the horizontal push rod 507 are hinged to one end of the first connecting rod 508 and one end of the second connecting rod 509, respectively. The other end of the first connecting rod 508 is hinged to the outer wall of the outer shearing cylinder 503, and the other end of the second connecting rod 509 is hinged to the outer wall of the middle shearing cylinder 504. Driven by the electric cylinder 506, the outer shearing cylinder 503 and the middle shearing cylinder 504 can reciprocate around their central axis within a preset angle range, thus achieving the shearing action. To facilitate the hinge connection between the second connecting rod 509 and the middle shearing cylinder 504, a clearance hole 5036 is provided on the side wall of the middle shearing cylinder 504. Preferably, in this embodiment, the shearing teeth are inverted triangular in shape and have sharpened edges. The shearing teeth 5031 of the outer shearing cylinder 503 and the shearing teeth 5041 of the middle shearing cylinder 504 are staggered to achieve a shearing operation similar to that of scissors.

[0030] refer to Figures 9 to 13In this embodiment, the inner sampling cylinder 505 is divided into multiple segments from top to bottom. The uppermost segment is an abutment ring 5051, and the remaining segments are sampling rings 5052. Each sampling ring 5052 has a vertical mounting hole on its inner wall, through which multiple sampling rings 5052 are rotatably connected to the same rotating shaft 5053. The inner wall of the middle shearing cylinder 504 has a step 5042. The upper end face of the abutment ring 5051 abuts against the bottom surface of the support plate 501, and the lower end face abuts against the adjacent sampling ring 5052. The lower end face of the lowermost sampling ring 5052 abuts against the step 5042, thereby achieving the positioning of the inner sampling cylinder 505 and its installation and fixation on the inner wall of the middle shearing cylinder 504. Utilizing the segmented structure of the inner sampling cylinder 505, the sampling rings 5052 corresponding to the bottom sediment layers can be rotated around the rotating shaft 5053 to extract the sample from that layer. This layered bottom mud extraction structure not only eliminates the need for other auxiliary tools, but also avoids the problem that auxiliary tools may damage the original layered structure of the sample when extracting bottom mud samples using traditional integrated mud extraction tubes.

[0031] In this embodiment, the outer shearing cylinder 503 includes an outer shearing upper cylinder 5034 and an outer shearing lower cylinder 5035 that are detachably and fixedly connected. The top opening of the outer shearing upper cylinder 5034 is provided with an annular edge 5033, and the rotating support frame 502 is provided with an annular groove that matches the annular edge 5033. The bottom opening of the outer shearing lower cylinder 5035 is provided with shearing teeth 5031. The outer shearing upper cylinder 5034 and the outer shearing lower cylinder 5035 are connected by providing ear plates 5032 on the outer wall of the cylinder and using bolts to achieve a detachable and fixed connection. The intermediate shearing cylinder 504 includes an upper intermediate shearing cylinder 5045 and a lower intermediate shearing cylinder 5046. The upper intermediate shearing cylinder 5045 has an annular edge 5044 at its top opening, and a second annular groove matching the annular edge 5044 is provided at the rotating support frame 502. The lower intermediate shearing cylinder 5046 has shearing teeth 5041 at its bottom opening. The upper intermediate shearing cylinder 5045 and the lower intermediate shearing cylinder 5046 are connected by ear plates 5043 on the outer wall of the cylinder, and a detachable fixed connection is achieved using bolts. To facilitate the installation of the ear plates 5043 on the upper intermediate shearing cylinder 5045 and the lower intermediate shearing cylinder 5046, clearance holes 5036 are provided on the side wall of the outer shearing cylinder 503. Since the inner sampling cylinder 505 is located inside the middle shearing cylinder 504, by designing the middle shearing cylinder 504 and the outer shearing cylinder 503 as an upper and lower split structure connected by fasteners, the inner sampling cylinder 505 can be taken out by removing the outer lower shearing cylinder 5035 and the middle lower shearing cylinder 5046 in sequence during disassembly.

[0032] This embodiment uses an outer shearing cylinder 503 and a middle shearing cylinder 504 that can move in opposite directions to form a highly efficient shearing action, effectively cutting off the roots of tough plants in wetlands and avoiding sampling disturbance; the inner sampling cylinder 505 adopts a multi-segment split structure to achieve high-fidelity collection of bottom sediment layers; the whole machine is integrated on a movable carrier 1 with a float 6 and a dedicated propulsion wheel, and with the help of a self-locking lifting mechanism 4, it can operate stably in complex soft mud environments such as shallow water and swamps, and has the advantages of compact structure, reliable operation and strong environmental adaptability, which significantly improves the integrity and scientific nature of wetland bottom sediment sampling.

[0033] The above implementation is only used to explain the concept of the present invention, and is not intended to limit the protection of the present invention. Any non-substantial modifications made to the present invention using this concept should fall within the protection scope of the present invention.

Claims

1. A shearing and acquisition mechanism, characterized in that, include: A support plate, wherein a rotating support frame is provided on the bottom surface of the support plate; The multi-layered cylindrical body comprises, from the outside in, an outer shearing cylinder, a middle shearing cylinder, and an inner sampling cylinder. Each layer of the cylinder is open at both the top and bottom and is hollow. The tops of the outer and middle shearing cylinders are rotatably connected to a rotating support frame, allowing them to rotate around their own central axis. The bottoms of the outer and middle shearing cylinders are provided with shearing teeth. The inner sampling cylinder is detachably mounted on the inner wall of the middle shearing cylinder. A rotary power source, fixed on a rotary support frame, is used to drive the outer shearing cylinder and the middle shearing cylinder to rotate around the central axis, and the two rotate in opposite directions.

2. The shearing and acquisition mechanism as described in claim 1, characterized in that, The outer shearing cylinder includes an outer shearing upper cylinder and an outer shearing lower cylinder that are detachably and fixedly connected. The top opening of the outer shearing upper cylinder is provided with an annular edge, and the rotating support frame is provided with an annular groove that matches the annular edge. The bottom opening of the outer shearing lower cylinder is provided with shearing teeth.

3. The shearing and acquisition mechanism as described in claim 1, characterized in that, The intermediate shearing cylinder includes an upper intermediate shearing cylinder and a lower intermediate shearing cylinder. The upper intermediate shearing cylinder has an annular edge at its top opening and an annular groove matching the annular edge at the rotating support frame. The lower intermediate shearing cylinder has shearing teeth at its bottom opening.

4. The shearing and acquisition mechanism as described in claim 1, characterized in that, The inner sampling cylinder is divided into multiple sections from top to bottom, with the uppermost section being an abutment ring and the remaining sections being sampling rings. The inner wall of each sampling ring has a vertical mounting hole, and multiple sampling rings are rotatably connected to the same rotating shaft through the mounting hole. The inner wall of the middle shear cylinder is provided with a step. The upper end face of the contact ring is used to abut against the bottom surface of the support plate, the lower end face is used to abut against the adjacent sampling ring, and the lower end face of the bottommost sampling ring is used to abut against the step.

5. The shearing and acquisition mechanism as described in claim 1, characterized in that, A rotary transmission structure is provided between the rotary power source and the multi-layer cylinder, and the rotary transmission structure includes a horizontal push rod, a connecting rod one, and a connecting rod two. The rotary power source adopts a linear actuator, which includes a piston rod that can extend and retract linearly. The rod end of the piston rod is fixedly connected to the middle of the horizontal push rod. The two ends of the horizontal push rod are respectively hinged to one end of connecting rod one and one end of connecting rod two. The other end of connecting rod one is hinged to the outer wall of the outer shearing cylinder, and the other end of connecting rod two is hinged to the outer wall of the middle shearing cylinder.

6. The shearing and acquisition mechanism as described in claim 1, characterized in that, The shearing teeth are inverted triangular in shape and have sharpened edges; the shearing teeth of the outer shearing cylinder and the shearing teeth of the middle shearing cylinder are arranged in a staggered manner.

7. A wetland sediment sampling vehicle, characterized in that, include: Movable carrier; A float, mounted on a movable carrier, for providing buoyancy; A lifting mechanism, which is mounted on a movable carrier; The shearing and collecting mechanism according to any one of claims 1 to 6, wherein the top surface of the support plate of the shearing and collecting mechanism is fixed to the lifting end of the lifting mechanism.

8. A wetland sediment sampling vehicle as described in claim 7, characterized in that, The movable carrier includes several wheels, each of which is equipped with a drive source.

9. A wetland sediment sampling vehicle as described in claim 8, characterized in that, The wheel includes a central shaft and an annular rim, with several spokes between the central shaft and the annular rim, and raised strips arranged on the outer wall of the annular rim.

10. A wetland sediment sampling vehicle as described in claim 7, characterized in that, The lifting mechanism includes: The mounting base has a guide groove and is fixed with bracket one and bracket two; The worm gear is rotatably connected to the support. A transmission rod, which is rotatably connected to bracket two; A worm drive unit, which is fixed on a bracket, is used to drive the worm to rotate; A worm gear, which is fixed to the transmission rod and meshes with the worm; A gear, which is fixed to a transmission rod; The guide rail is slidably connected in the guide groove and can slide vertically along the guide groove. The bottom of the guide rail is fixed to the top surface of the support plate of the shearing and collecting mechanism. The guide rail is provided with a rack that meshes with a gear.

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