A portable columnar sediment sampler

Abstract

The present invention discloses a portable columnar sediment sampler, which relates to the technical field of sediment collection devices. The present invention includes a sampling mechanism, including a sampling tube and a tube cover arranged above the sampling tube; an installation mechanism, including an insert tube fixedly arranged at the upper end of the shaft, and a lower handle rod is connected to the inside of the insert tube; a crushing mechanism, including a bearing member fixedly arranged at the end of the sampling tube, and a crushing tube is rotatably connected to the inner wall of the lower end of the bearing member. The present invention discloses a portable columnar sediment sampler. During the specific installation process, the staff pinches the handle end and pulls the limit rod outward. At this time, the spring is compressed, and the characteristic of the lower handle rod being connected to the inside of the insert tube is further utilized to insert the lower handle rod into the insert tube. Then the staff loosens the handle end, the spring recovers its elasticity, and the characteristic of one end of the limit ring being connected to the socket is utilized to complete the assembly of the lower handle rod. In addition, during the installation and disassembly process, the limit assembly is always located on one side of the insert tube, which is convenient for quick installation and disassembly.

Description

Technical Field

[0001] The invention relates to the technical field of bottom mud collection devices, and in particular to a portable columnar bottom mud sampler. Background Art

[0002] Bottom sediment is a mixture of clay, silt, organic matter, and various minerals, deposited at the bottom of a body of water through long-term physical, chemical, and biological processes, as well as water transport. Ecological research on water bodies such as oceans, lakes, and rivers often requires sampling sediment from the bottom of the water. Mud samplers are often used in this sampling process, and therefore, they play a crucial role in research.

[0003] A search revealed a Chinese patent application with authorization publication number CN 203101114 U, titled "A portable sediment sampler comprising a handheld handle, an operating rod, an inner cylinder equipped with an inner cylinder cover, an outer cylinder, and a connector for connecting the operating rod and the inner cylinder cover." The handheld handle is connected to the operating rod and is cross-shaped with rope bolts on both arms. The operating rod is hollow and tubular. The inner cylinder cover is equipped with a one-way valve. The inner cylinder cover has a larger diameter than the outer cylinder. A spring column is provided at the top of the outer cylinder, and a rope bolt is provided on the outer wall of the outer cylinder. The bottom of the outer cylinder comprises a magnetic fan-shaped closer. The height of the inner cylinder is equal to the total height of the outer cylinder plus the height of the spring column in a compressed state. The sediment sampler also includes a safety rope, with its ends attached to the rope bolts of the handheld handle and the outer cylinder, respectively. The sediment sampler features precise scale markings, which simplify cleaning the inner cylinder and allow for easy removal of intact columnar sediment. It provides precise positioning and minimal sediment agitation.

[0004] The above-mentioned device has drawbacks during actual use. The operating rod is attached using screws. While this facilitates disassembly of the operating rod into multiple branch rods, the screws become detached from the rod after disassembly, making it difficult for staff to store and relocate the screws. During assembly for the next sampling activity, personnel are unable to locate and install the screws in a timely manner. Furthermore, during the sampling process, if the bottom of the sampling tube contacts hard sediment, such as sand or gravel, the sampling process cannot be completed smoothly. Summary of the Invention

[0005] The object of the present invention is to provide a portable columnar sediment sampler to solve the problems raised in the above background technology.

[0006] In order to solve the above problems, the technical solutions adopted by the present invention are as follows:

[0007] A portable columnar sediment sampler comprising

[0008] The sampling mechanism includes a sampling cylinder and a cylinder cover arranged above the sampling cylinder, the cylinder cover is threadedly connected to the outer wall of the end of the sampling cylinder, a disc is provided above the cylinder cover, an orifice is opened on the upper wall of the disc, a sealing sleeve is fixedly installed inside the orifice, a shaft is movably connected inside the sealing sleeve, a connecting assembly is provided between the disc and the cylinder cover, and a pressing assembly is provided inside the sampling cylinder;

[0009] The mounting mechanism comprises an insert tube fixedly arranged at the upper end of the shaft rod, a lower handle rod being plugged into the inside of the insert tube, a limiting assembly being provided on one side of the insert tube, and the limiting assembly comprising a U-shaped frame, a limiting rod and a limiting ring, an outer wall of the insert tube being provided with a through hole, the U-shaped frame being fixedly mounted on the outer wall of the insert tube, a through opening being provided on one side wall of the U-shaped frame, one end of the limiting rod passing through the through opening and being plugged into and connected with the through hole, the limiting ring being provided on one side of the outer side of the insert tube, and the limiting ring being fixedly mounted on the outer wall of the limiting rod, an auxiliary assembly being provided above the lower handle rod, a socket being provided on the outer wall of the lower end of the lower handle rod, and one end of the limiting ring being plugged into and connected with the socket;

[0010] The crushing mechanism includes a bearing member fixedly arranged at the end of the sampling tube, the inner wall of the lower end of the bearing member is rotatably connected to the crushing tube, the outer wall of the crushing tube is fixedly connected to a large gear plate, and a drive assembly is provided on one side of the large gear plate.

[0011] Preferably, the connecting assembly includes a connecting frame, and the two connecting frames are symmetrically and fixedly installed on the outer wall of the cylinder cover, and one end of the two connecting frames is fixedly connected to the outer wall of the disc.

[0012] Preferably, the pressing assembly includes a plug disc, and the upper wall of the plug disc is fixedly connected to the lower wall of the shaft.

[0013] Preferably, the limiting assembly further includes a spring and a handle end, the spring is arranged between the limiting ring and the U-shaped frame, and the spring is sleeved on the outer wall of the limiting rod, and one end of the handle end is fixedly connected to one end of the limiting rod.

[0014] Preferably, the auxiliary component includes an upper handle rod and a hand-held end, the lower end of the upper handle rod is threadedly connected to the upper end of the lower handle rod, and the outer wall of the hand-held end is fixedly connected to the upper end of the upper handle rod.

[0015] Preferably, the driving assembly includes a servo motor, a connecting shaft and a small gear plate, the output end of the servo motor is connected to one end of the connecting shaft, the small gear plate is fixedly mounted on the outer wall of the connecting shaft, and the small gear plate is meshed with the large gear plate.

[0016] Preferably, the driving assembly further comprises a waterproof cylinder, the waterproof cylinder is arranged at one side of the lower end of the sampling cylinder, and the servo motor is arranged inside the waterproof cylinder.

[0017] Preferably, the outer wall of the waterproof cylinder is fixedly connected with a docking rod, and one end of the docking rod is fixedly connected to the outer wall of the bottom end of the sampling cylinder.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] During the specific installation process of the present invention, the staff pinches the handle end and pulls the limit rod outward. At this time, the spring is compressed, and the lower handle rod is further inserted into the insert tube by utilizing the characteristic that the lower handle rod is plugged in and connected inside the insert tube. Then the staff loosens the handle end, the spring recovers its elasticity, and utilizes the characteristic that one end of the limit ring is plugged in and connected to the socket to complete the assembly of the lower handle rod. In addition, during the installation and disassembly process, the limit assembly is always located on one side of the insert tube, which is convenient for quick installation and disassembly.

[0020] The servo motor of the present invention is connected through remote signal control. At this time, the staff can remotely and wirelessly start the servo motor, and the servo motor further drives the small gear plate to rotate. Utilizing the characteristic of the small gear plate meshing with the large gear plate, the large gear plate is further driven to rotate, and the inner wall of the lower end of the bearing is rotatably connected to the crushing barrel. The rotation of the crushing barrel facilitates the crushing of hard mud blocks, thereby facilitating the smooth completion of sampling work. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall external structure of a portable columnar sediment sampler;

[0022] Figure 2 This is a schematic diagram of the sampling mechanism structure of a portable columnar sediment sampler;

[0023] Figure 3 This is a schematic diagram of the installation structure of a portable columnar sediment sampler;

[0024] Figure 4 This is a first-person structural diagram of a portable columnar sediment sampler;

[0025] Figure 5 This is a schematic diagram of the structure of a portable columnar sediment sampler from a second perspective;

[0026] Figure 6 A portable columnar sediment sampler Figure 3 A partial enlarged view of point A in the middle.

[0027] In the figure: 100, sampling mechanism; 101, sampling cylinder; 102, cylinder cover; 103, disc; 104, sealing sleeve; 105, shaft; 106, connecting frame; 107, plug disc; 200, mounting mechanism; 201, insert cylinder; 202, lower handle rod; 203, U-shaped frame; 204, limiting rod; 205, limiting ring; 206, spring; 207, handle end; 208, upper handle rod; 209, handheld end; 210, socket; 300, crushing mechanism; 301, bearing; 302, crushing cylinder; 303, large gear plate; 304, servo motor; 305, connecting shaft; 306, small gear plate; 307, waterproof cylinder; 308, docking rod. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example 1:

[0030] See also Figures 1-6 As shown, the present invention is a portable columnar sediment sampler, comprising

[0031] The sampling mechanism 100 includes a sampling barrel 101 and a barrel cover 102 disposed above the sampling barrel 101. The barrel cover 102 is threadedly connected to the outer wall of the end of the sampling barrel 101. A disc 103 is provided above the barrel cover 102. The upper wall of the disc 103 has an opening. A sealing sleeve 104 is fixedly installed inside the opening. A shaft 105 is movably connected inside the sealing sleeve 104. A connecting assembly is provided between the disc 103 and the barrel cover 102. A pressing assembly is provided inside the sampling barrel 101.

[0032] The mounting mechanism 200 includes an insert tube 201 fixedly arranged on the upper end of the shaft rod 105, and a lower handle rod 202 is plugged and connected inside the insert tube 201. A limiting component is provided on one side of the insert tube 201, and the limiting component includes a U-shaped frame 203, a limiting rod 204 and a limiting ring 205. A through hole is provided on the outer wall of the insert tube 201, and the U-shaped frame 203 is fixedly installed on the outer wall of the insert tube 201. A through hole is provided on one side wall of the U-shaped frame 203, and one end of the limiting rod 204 passes through the through hole and is plugged and connected with the through hole. The limiting ring 205 is provided on one side of the outer side of the insert tube 201, and the limiting ring 205 is fixedly installed on the outer wall of the limiting rod 204. An auxiliary component is provided above the lower handle rod 202, and a socket 210 is provided on the outer wall of the lower end of the lower handle rod 202, and one end of the limiting ring 205 is plugged and connected with the socket 210;

[0033] The crushing mechanism 300 includes a bearing member 301 fixedly arranged at the end of the sampling tube 101. The inner wall of the lower end of the bearing member 301 is rotatably connected to the crushing tube 302. The outer wall of the crushing tube 302 is fixedly connected to a large gear plate 303. A driving assembly is provided on one side of the large gear plate 303.

[0034] Depend on Figure 1-Figure 2 It can be seen that the connection assembly includes a connection frame 106 , and the two connection frames 106 are symmetrically and fixedly installed on the outer wall of the cylinder cover 102 , and one end of the two connection frames 106 is fixedly connected to the outer wall of the disc 103 .

[0035] The pressing assembly includes a plug disc 107 , the upper wall of which is fixedly connected to the lower wall of the shaft 105 .

[0036] As can be seen from the above, when in use, the staff will take the device to the place where sampling is to be carried out, and further assemble the device using the installation mechanism 200. Then the staff will hold the handheld end 209 to place the sampling tube 101 into the water body, and further press the sampling tube 101 downward to sample the bottom mud. After sampling, the staff will further take the sampling tube 101 to the ground, and then press the shaft 105 to drive the plug disc 107 to move, thereby facilitating the discharge of the bottom mud inside the sampling tube 101. The operation is convenient and quick.

[0037] Example 2:

[0038] The sampling mechanism 100 includes a sampling barrel 101 and a barrel cover 102 disposed above the sampling barrel 101. The barrel cover 102 is threadedly connected to the outer wall of the end of the sampling barrel 101. A disc 103 is provided above the barrel cover 102. The upper wall of the disc 103 has an opening. A sealing sleeve 104 is fixedly installed inside the opening. A shaft 105 is movably connected inside the sealing sleeve 104. A connecting assembly is provided between the disc 103 and the barrel cover 102. A pressing assembly is provided inside the sampling barrel 101.

[0039] The mounting mechanism 200 includes an insert tube 201 fixedly arranged on the upper end of the shaft rod 105, and a lower handle rod 202 is plugged and connected inside the insert tube 201. A limiting component is provided on one side of the insert tube 201, and the limiting component includes a U-shaped frame 203, a limiting rod 204 and a limiting ring 205. A through hole is provided on the outer wall of the insert tube 201, and the U-shaped frame 203 is fixedly installed on the outer wall of the insert tube 201. A through hole is provided on one side wall of the U-shaped frame 203, and one end of the limiting rod 204 passes through the through hole and is plugged and connected with the through hole. The limiting ring 205 is provided on one side of the outer side of the insert tube 201, and the limiting ring 205 is fixedly installed on the outer wall of the limiting rod 204. An auxiliary component is provided above the lower handle rod 202, and a socket 210 is provided on the outer wall of the lower end of the lower handle rod 202, and one end of the limiting ring 205 is plugged and connected with the socket 210;

[0040] The crushing mechanism 300 includes a bearing member 301 fixedly arranged at the end of the sampling tube 101. The inner wall of the lower end of the bearing member 301 is rotatably connected to the crushing tube 302. The outer wall of the crushing tube 302 is fixedly connected to a large gear plate 303. A driving assembly is provided on one side of the large gear plate 303.

[0041] refer to Figure 1 、 Figure 3 and Figure 6 As shown, the limiting assembly also includes a spring 206 and a handle end 207. The spring 206 is arranged between the limiting ring 205 and the U-shaped frame 203, and the spring 206 is sleeved on the outer wall of the limiting rod 204. One end of the handle end 207 is fixedly connected to one end of the limiting rod 204.

[0042] The auxiliary component includes an upper handle rod 208 and a handheld end 209 . The lower end of the upper handle rod 208 is threadedly connected to the upper end of the lower handle rod 202 , and the outer wall of the handheld end 209 is fixedly connected to the upper end of the upper handle rod 208 .

[0043] As can be seen from the above, during the specific installation process, the staff pinches the handle end 207 and pulls the limit rod 204 outward. At this time, the spring 206 is compressed, and the lower handle rod 202 is further inserted into the insert tube 201 by further utilizing the characteristic that the lower handle rod 202 is plugged in and connected inside the insert tube 201. Then the staff loosens the handle end 207, and the spring 206 recovers its elasticity. The characteristic that one end of the limit ring 205 is plugged in and connected with the socket 210 is utilized to complete the assembly of the lower handle rod 202. During the installation and disassembly process, the limit component is always located on one side of the insert tube 201, which is convenient for quick installation and disassembly, and the structural design is humanized.

[0044] Example 3:

[0045] The sampling mechanism 100 includes a sampling barrel 101 and a barrel cover 102 disposed above the sampling barrel 101. The barrel cover 102 is threadedly connected to the outer wall of the end of the sampling barrel 101. A disc 103 is provided above the barrel cover 102. The upper wall of the disc 103 has an opening. A sealing sleeve 104 is fixedly installed inside the opening. A shaft 105 is movably connected inside the sealing sleeve 104. A connecting assembly is provided between the disc 103 and the barrel cover 102. A pressing assembly is provided inside the sampling barrel 101.

[0046] The mounting mechanism 200 includes an insert tube 201 fixedly arranged on the upper end of the shaft rod 105, and a lower handle rod 202 is plugged and connected inside the insert tube 201. A limiting component is provided on one side of the insert tube 201, and the limiting component includes a U-shaped frame 203, a limiting rod 204 and a limiting ring 205. A through hole is provided on the outer wall of the insert tube 201, and the U-shaped frame 203 is fixedly installed on the outer wall of the insert tube 201. A through hole is provided on one side wall of the U-shaped frame 203, and one end of the limiting rod 204 passes through the through hole and is plugged and connected with the through hole. The limiting ring 205 is provided on one side of the outer side of the insert tube 201, and the limiting ring 205 is fixedly installed on the outer wall of the limiting rod 204. An auxiliary component is provided above the lower handle rod 202, and a socket 210 is provided on the outer wall of the lower end of the lower handle rod 202, and one end of the limiting ring 205 is plugged and connected with the socket 210;

[0047] The crushing mechanism 300 includes a bearing member 301 fixedly arranged at the end of the sampling tube 101. The inner wall of the lower end of the bearing member 301 is rotatably connected to the crushing tube 302. The outer wall of the crushing tube 302 is fixedly connected to a large gear plate 303. A driving assembly is provided on one side of the large gear plate 303.

[0048] Depend on Figure 1 、 Figure 4 and Figure 5 It can be seen that the driving assembly includes a servo motor 304, a connecting shaft 305 and a small gear plate 306. The output end of the servo motor 304 is connected to one end of the connecting shaft 305. The small gear plate 306 is fixedly installed on the outer wall of the connecting shaft 305, and the small gear plate 306 is meshed with the large gear plate 303.

[0049] The driving assembly further includes a waterproof cylinder 307 . The waterproof cylinder 307 is disposed on one side of the lower end of the sampling cylinder 101 . The servo motor 304 is disposed inside the waterproof cylinder 307 .

[0050] A docking rod 308 is fixedly connected to the outer wall of the waterproof cylinder 307 , and one end of the docking rod 308 is fixedly connected to the outer wall of the bottom end of the sampling cylinder 101 .

[0051] As can be seen from the above, when the staff places the sampling tube 101 into the water to sample the bottom mud, in order to prevent the lower end of the sampling tube 101 from touching the hard mud blocks, the servo motor 304 is connected through remote signal control. At this time, the staff can remotely and wirelessly start the servo motor 304, and further the servo motor 304 drives the small gear plate 306 to rotate, and utilizes the characteristics of the small gear plate 306 and the large gear plate 303 that are engaged with each other to further drive the large gear plate 303 to rotate, and the inner wall of the lower end of the bearing part 301 is rotatably connected to the crushing barrel 302, and the rotation of the crushing barrel 302 facilitates the crushing of the hard mud blocks.

[0052] All standard parts used in the present invention can be purchased commercially, and special-shaped parts can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as bolts, rivets, welding, etc. that are mature in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. In addition, the circuit connections adopt conventional connection methods in the prior art and will not be described in detail here. Any matters not described in detail in this specification belong to the prior art known to professionals in this field.

[0053] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. "Multiple" means two or more, unless otherwise specifically defined.

[0054] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0055] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0056] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0057] In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0058] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A portable columnar sediment sampler, characterized by: include The sampling mechanism (100) comprises a sampling cylinder (101) and a cylinder cover (102) arranged above the sampling cylinder (101), wherein the cylinder cover (102) is threadedly connected to the outer wall of the end of the sampling cylinder (101), a disc (103) is provided above the cylinder cover (102), an orifice is provided on the upper wall of the disc (103), a sealing sleeve (104) is fixedly installed inside the orifice, a shaft (105) is movably connected inside the sealing sleeve (104), a connecting component is provided between the disc (103) and the cylinder cover (102), and a pressing component is provided inside the sampling cylinder (101); The mounting mechanism (200) comprises an insert (201) fixedly arranged on the upper end of the shaft (105), a lower handle rod (202) is plugged and connected inside the insert (201), a limiting assembly is provided on one side of the insert (201), the limiting assembly comprises a U-shaped frame (203), a limiting rod (204) and a limiting ring (205), a through hole is opened on the outer wall of the insert (201), the U-shaped frame (203) is fixedly installed on the outer wall of the insert (201), the U A through hole is provided on one side wall of the frame (203), one end of the limiting rod (204) passes through the through hole and is plugged into the through hole, the limiting ring (205) is arranged on one side of the outside of the insert cylinder (201), and the limiting ring (205) is fixedly installed on the outer wall of the limiting rod (204), an auxiliary component is provided above the lower handle rod (202), a socket (210) is provided on the outer wall of the lower end of the lower handle rod (202), and one end of the limiting ring (205) is plugged into the socket (210); The crushing mechanism (300) comprises a bearing member (301) fixedly arranged at the end of the sampling cylinder (101); the inner wall of the lower end of the bearing member (301) is rotatably connected to the crushing cylinder (302); the outer wall of the crushing cylinder (302) is fixedly connected to a large gear plate (303); and a driving assembly is provided on one side of the large gear plate (303).

2. A portable columnar sediment sampler according to claim 1, characterized in that: The connecting assembly comprises a connecting frame (106), wherein the two connecting frames (106) are symmetrically and fixedly mounted on the outer wall of the cylinder cover (102), and one end of the two connecting frames (106) is fixedly connected to the outer wall of the disc (103).

3. The portable columnar sediment sampler according to claim 1, characterized in that: The pressing assembly comprises a plug disc (107), the upper wall of the plug disc (107) being fixedly connected to the lower wall of the shaft (105).

4. The portable columnar sediment sampler according to claim 1, characterized in that: The limiting assembly further comprises a spring (206) and a handle end (207), wherein the spring (206) is arranged between the limiting ring (205) and the U-shaped frame (203), and the spring (206) is sleeved on the outer wall of the limiting rod (204), and one end of the handle end (207) is fixedly connected to one end of the limiting rod (204).

5. The portable columnar sediment sampler according to claim 1, characterized in that: The auxiliary component comprises an upper handle rod (208) and a handheld end (209), wherein the lower end of the upper handle rod (208) is threadedly connected to the upper end of the lower handle rod (202), and the outer wall of the handheld end (209) is fixedly connected to the upper end of the upper handle rod (208).

6. The portable columnar sediment sampler according to claim 1, characterized in that: The driving assembly comprises a servo motor (304), a connecting shaft (305) and a small gear plate (306), wherein the output end of the servo motor (304) is connected to one end of the connecting shaft (305), the small gear plate (306) is fixedly mounted on the outer wall of the connecting shaft (305), and the small gear plate (306) is meshed with the large gear plate (303).

7. The portable columnar sediment sampler according to claim 6, characterized in that: The driving assembly further comprises a waterproof cylinder (307), wherein the waterproof cylinder (307) is arranged on one side of the lower end of the sampling cylinder (101), and the servo motor (304) is arranged inside the waterproof cylinder (307).

8. The portable columnar sediment sampler according to claim 7, characterized in that: The outer wall of the waterproof cylinder (307) is fixedly connected with a docking rod (308), and one end of the docking rod (308) is fixedly connected to the outer wall of the bottom end of the sampling cylinder (101).

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