Soil sampling device

Abstract

The utility model relates to the technical field of soil sampling, and provides a soil sampling device which comprises a positioning frame, an operating cylinder is detachably connected to the positioning frame in a sliding manner, a sampling cylinder is detachably connected to the lower end of the operating cylinder, and a ring blade is fixedly connected to the lower end of the sampling cylinder; grooves are formed in the side walls of the operating cylinder and the sampling cylinder at equal intervals in the length direction, a power assisting assembly is arranged on one side of the positioning frame and comprises a supporting frame fixedly connected to the positioning frame, two connecting rods are rotationally connected to the supporting frame and fixedly connected with a lantern ring, an operating rod slides on the lantern ring, and the operating rod is connected with the power assisting assembly. According to the sampling barrel pulling-out assisting device, the pulling-out difficulty of the sampling barrel inserted into the ground can be reduced, and the pulling-out of the sampling barrel is assisted, so that the sampling efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of soil sampling technology, and more specifically, to a soil sampling device. Background Technology

[0002] Soil carbon pools are a crucial link in the global carbon cycle, and their carbon sequestration potential is directly related to achieving carbon neutrality goals. The organic carbon pool in soil is approximately three times the size of the atmospheric carbon pool, and even small fluctuations in it can significantly impact atmospheric CO2 concentrations. In the arid and semi-arid ecosystems of western China, the inorganic carbon pool in soil is two to three times larger than the organic carbon pool, with deeper soil layers (>50 cm) storing over 50% of the inorganic carbon. Inorganic carbon primarily exists in the soil as carbonates, and its formation process is directly related to atmospheric CO2 sequestration. Influenced by factors such as agricultural irrigation, soil inorganic carbon exhibits strong spatial heterogeneity. Traditional soil sampling techniques, unable to simultaneously ensure the complete acquisition of deep samples and efficient operation, severely limit the accuracy of regional carbon sequestration dynamic assessments.

[0003] Patent document CN119104354A discloses a deep soil sampling device for soil carbon sequestration surveys, including a sampling rod, an extension rod, and a control rod. The extension rod is located between the sampling rod and the control rod, and its two ends are detachably connected to the sampling rod and the control rod via connecting components. A sampling groove is provided along the length of the sampling rod, and a conical insertion head is slidably connected within the sampling groove. When sufficient soil samples are collected, a reverse drive mechanism drives two hidden blades (one and two) to rotate in opposite directions. These blades cut the soil within the sampling groove, ensuring that the soil above the blades is completely sampled. Pulling the control rod upwards pulls the sampling rod and extension rod out of the ground. During this pulling process, the hidden blades support the soil within the sampling groove, preventing soil from falling out and further ensuring the integrity of the soil sample.

[0004] However, in the sampling devices of the existing technology, when the extension rod and sampling rod (sampling tube) are inserted too deeply, they are difficult to pull out due to the friction and pressure of the surrounding soil, thus affecting the sampling efficiency. Utility Model Content

[0005] To overcome the shortcomings mentioned above, this invention aims to provide a soil sampling device that can reduce the difficulty of pulling out the sampling tube inserted into the ground, assist in pulling out the sampling tube, and thus improve sampling efficiency.

[0006] A soil sampling device includes a positioning frame, an operating cylinder slidably and detachably connected to the positioning frame, a sampling cylinder detachably connected to the lower end of the operating cylinder, and a ring blade fixed to the lower end of the sampling cylinder; the side walls of the operating cylinder and the sampling cylinder are provided with grooves at equal intervals along the length direction; an assisting component is provided on one side of the positioning frame, the assisting component includes a support frame fixed to the positioning frame, two connecting rods rotatably connected to the support frame, both connecting rods being fixed to a collar, an operating rod sliding on the collar, and a fixing cylinder fixed to the end of the operating rod near the positioning frame, with a locking block fixed to the fixing cylinder.

[0007] Furthermore, the length of the operating lever on the side of the collar away from the positioning frame is at least three times the length of the lever on the other side.

[0008] Furthermore, an extension tube can be detachably connected between the operating tube and the sampling tube, and two adjacent extension tubes can be detachably connected. The side wall of the extension tube is also provided with the groove.

[0009] Furthermore, after the operating cylinder, the extension cylinder, and the sampling cylinder are connected together, the grooves are all located on the same side.

[0010] Furthermore, the assist component also includes two fixing rings fixed to the positioning frame, the inner diameter of the fixing rings being the same as the inner diameter of the fixing cylinder, and a fixing rod being slidably inserted into the fixing rings.

[0011] Furthermore, a mounting bracket is fixedly connected to the side of the positioning frame away from the support frame, and a movable wheel is rotatably connected to the mounting bracket.

[0012] Furthermore, when the positioning frame is in contact with the ground, the moving wheel is just not in contact with the ground.

[0013] Furthermore, a nut concentrically disposed on any of the fixing rings is fixedly connected to the fixing ring, and a threaded end adapted to the nut is fixedly connected to one end of the fixing rod.

[0014] Furthermore, a vertical plate is fixedly connected to the positioning frame, and a screw hole is provided on the operating cylinder. The vertical plate and the operating cylinder are connected by positioning bolts.

[0015] Furthermore, the lower end of the operating cylinder is provided with a first slot, the lower end of the extension cylinder is provided with a second slot identical to the first slot, the upper end of the sampling cylinder is fixedly connected with a first insert block adapted to the first slot and the second slot, the upper end of the extension cylinder is fixedly connected with a second insert block adapted to the first slot and the second slot, and the operating cylinder and the extension cylinder, adjacent extension cylinders, and the sampling cylinder and the extension cylinder are all connected by internal hex bolts.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] In this invention, when the sampling tube is inserted into the ground and needs to be pulled out, if it is difficult to pull out, the operator holds the operating rod and rotates and slides it until the locking block is engaged in the groove at the appropriate position. Utilizing the lever principle, the operator steps on the positioning frame with their foot or presses it down with a heavy object, while holding the end of the operating rod away from the locking block with one hand and pressing down. This can assist in pulling out the sampling tube. This operation can also be performed by multiple operators to ensure a smooth pulling process. Afterward, the locking block is engaged in the groove at the appropriate position below. Repeating this operation can continuously assist in pulling out the sampling tube, reducing the difficulty of pulling out and thus improving sampling efficiency. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 A schematic diagram of the overall structure of a soil sampling device Figure 1 ;

[0020] Figure 2 A schematic diagram of the overall structure of a soil sampling device Figure 2 ;

[0021] Figure 3 This is a schematic diagram of the mobile device;

[0022] Figure 4 This is a schematic diagram of the control lever;

[0023] Figure 5 This is a schematic diagram of the transmission cutting assembly;

[0024] Figure 6 This is a diagram of the control cylinder. Figure 1 ;

[0025] Figure 7 This is a diagram of the control cylinder. Figure 2 ;

[0026] Figure 8 This is a diagram of a sampling tube. Figure 1 ;

[0027] Figure 9 This is a diagram of a sampling tube. Figure 2 ;

[0028] Figure 10 This is a diagram of an extension tube. Figure 1 ;

[0029] Figure 11 This is a diagram of an extension tube. Figure 2 .

[0030] In the diagram: 1. Positioning frame; 2. Operating cylinder; 3. Sampling cylinder; 4. Ring blade; 5. Groove; 6. Assistive component; 61. Support frame; 62. Connecting rod; 63. Collar; 64. Operating rod; 65. Fixing cylinder; 66. Locking block; 67. Fixing ring; 68. Fixing rod; 69. Mounting frame; 610. Moving wheel; 611. Nut; 612. Threaded end; 7. Extension cylinder; 8. Vertical plate; 9. Positioning bolt; 10. Handle; 11. Striking pad; 12. Transmission cutting assembly; 121. First rotating rod; 122. Second rotating rod; 123. Third rotating rod; 124. First slot; 125. First locking block; 126. Second locking block; 127. Second slot; 128. Third locking block; 129. Arc groove; 1210. Cutting blade; 13. First slot; 14. Second slot; 15. First insert block; 16. Second insert block; 17. Socket head cap screw. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Specific implementation examples:

[0033] like Figure 1-11 As shown, a soil sampling device includes a positioning frame 1, an operating cylinder 2 slidably and detachably connected to the positioning frame 1, a sampling cylinder 3 detachably connected to the lower end of the operating cylinder 2, and a ring blade 4 fixedly connected to the lower end of the sampling cylinder 3. The ring blade 4 helps the lower end of the sampling cylinder 3 to insert into the ground for soil sampling when the operating cylinder 2 is pressed or struck. The side walls of the operating cylinder 2 and the sampling cylinder 3 are provided with equally spaced grooves 5 along their length. An assist component 6 is provided on one side of the positioning frame 1. The assist component 6 includes a support frame 61 fixedly connected to the positioning frame 1, and two... Connecting rods 62, with their ends close to each other, are fixedly connected to collars 63. An operating rod 64 slides on the collar 63. A fixing cylinder 65 is fixedly connected to the end of the operating rod 64 near the positioning frame 1. A locking block 66 is fixedly connected to the fixing cylinder 65. When the sampling cylinder 3 is inserted into the ground and needs to be pulled out, if it is difficult to pull out, grasp the operating rod 64 and rotate (in coordination with collars 63 and connecting rods 62) and slide (in coordination with collars 63) until the locking block 66 engages in the groove 5 at a suitable position. The groove 5 at a suitable position should be the groove 5 located vertically below collars 63 (e.g.,...). Figure 2As shown, the length of the operating rod 64 on the side of the collar 63 away from the positioning frame 1 is at least three times the length of the rod on the other side. Utilizing the lever principle, after the locking block 66 is inserted into the groove 5 at the appropriate position, the operator steps on the positioning frame 1 with their foot or presses it down with a heavy object, while holding the end of the operating rod 64 away from the locking block 66 with one hand and pressing downwards. This assists in pulling out the sampling cylinder 3. This operation can also be performed by multiple operators. During the process of pressing down on the operating rod 64 to raise the sampling cylinder 3, the length of the operating rod 64 between the collar 63 and the groove 5 needs to change. Since the operating rod 64 slides on the collar 63, it is easy to coordinate with pushing and pulling the operating rod 64, ensuring a smooth pulling-out process for the sampling cylinder 3. Afterwards, the locking block 66 is inserted into the groove 5 at the appropriate position below. Repeating this operation continuously assists in pulling out the sampling cylinder 3, reducing the difficulty of pulling out and thus improving sampling efficiency.

[0034] like Figure 1-11 As shown, the positioning frame 1 is composed of multiple rings and fixedly connected by a support arm. At least two rings are concentrically arranged in the vertical direction and have the same inner diameter of the opening, so that the operating cylinder 2 and the sampling cylinder 3 can be slidably inserted into it.

[0035] like Figure 1-11 As shown, an extension tube 7 can be detachably connected between the operating tube 2 and the sampling tube 3. Adjacent extension tubes 7 can be detachably connected. According to the sampling depth requirements, any number of extension tubes 7 can be installed so that the sampling tube 3 can be inserted to a suitable depth for soil sampling. The side wall of the extension tube 7 is also provided with grooves 5 at equal intervals along the length direction to facilitate the cooperation with the assist component 6. After the operating tube 2, the extension tube 7 and the sampling tube 3 are connected, the grooves 5 are all located on the same side.

[0036] like Figure 1-11 As shown, the assistive component 6 also includes two fixed rings 67 fixedly connected to the positioning frame 1. The inner diameter of the fixed rings 67 is the same as the inner diameter of the fixed cylinder 65. A fixed rod 68 is slidably inserted into the fixed rings 67. A mounting frame 69 is fixedly connected to the side of the positioning frame 1 away from the support frame 61. A movable wheel 610 is rotatably connected to the mounting frame 69. When the positioning frame 1 is in contact with the ground, the movable wheel 610 is just not in contact with the ground. After the device is used, slide and rotate the operating lever 64 to make the fixed cylinder 65 concentric with the fixed rings 67, and insert the fixed rod 68 into the fixed rings 67 and the fixed cylinder 65 to fix the operating lever 64. Then, flip the device so that the movable wheel 610 contacts the ground. Pushing or pulling the operating lever 64 in this way makes it easy to move the device and makes carrying the device more convenient.

[0037] like Figure 1-11As shown, a nut 611 is fixedly connected to any of the fixing rings 67, which is concentrically arranged. The internal thread diameter of the nut 611 is smaller than the inner diameter of the fixing ring 67. One end of the fixing rod 68 is fixedly connected to a threaded end 612 that is adapted to the nut 611. After the fixing rod 68 is inserted into the fixing ring 67 and the fixing cylinder 65, the fixing rod 68 is rotated so that the threaded end 612 is threadedly connected to the nut 611, thereby fixing the position of the fixing rod 68 and preventing it from falling off.

[0038] like Figure 1-11 As shown, a vertical plate 8 is fixedly connected to the positioning frame 1, and a screw hole is opened on the operating cylinder 2. The vertical plate 8 and the operating cylinder 2 are connected by a positioning bolt 9. When sampling, the positioning bolt 9 can be removed to slide the operating cylinder 2. When moving the device, the positioning bolt 9 is re-threaded to the vertical plate 8 and the operating cylinder 2 to keep the position of the operating cylinder 2 unchanged, which facilitates the movement of the device. A handle 10 and a tapping pad 11 are fixedly connected to the upper end of the operating cylinder 2. The tapping pad 11 is a rubber pad. The handle 10 makes it easy to press the operating cylinder 2, and the tapping pad 11 is used to protect the operating cylinder 2 and prevent damage from tapping.

[0039] like Figure 1-11As shown, a transmission cutting assembly 12 is installed inside the operating cylinder 2, sampling cylinder 3, and extension cylinder 7. The transmission cutting assembly 12 includes a first rotating rod 121 rotatably connected to the operating cylinder 2, a second rotating rod 122 rotatably connected to the sampling cylinder 3, and a third rotating rod 123 rotatably connected to the extension cylinder 7. After the operating cylinder 2, extension cylinder 7, and sampling cylinder 3 are connected, the central axes of the first rotating rod 121, the second rotating rod 122, and the third rotating rod 123 are located on the same straight line. A first slot 124 is provided at the lower end of the first rotating rod 121, and a first locking block 125 is fixedly connected to the upper end of the first rotating rod 121. An adapter for the first rotating rod 125 is fixedly connected to the upper end of the second rotating rod 122. The first slot 124 has a second locking block 126, the lower end of the third rotating rod 123 has a second locking slot 127, and the upper end of the third rotating rod 123 is fixedly connected to a third locking block 128 that is adapted to the first slot 124 and the second slot 127. The first slot 124 and the second slot 127 are completely identical, and the first locking block 125, the second locking block 126 and the third locking block 128 are completely identical and are all hexagonal blocks (hexagonal bolt heads), which makes it easy to rotate the first locking block 125 with a wrench. The lower end of the sampling cylinder 3 has an arc groove 129 on its inner wall, and the lower end of the second rotating rod 122 is fixedly connected to a cutting blade 1210, which slides in the arc groove 129. After inserting the sampling tube 3 to a suitable depth, the first locking block 125 is rotated by a wrench. Since the second locking block 126 is inserted into the second locking groove 127 (if the extension tube 7 is not needed, the second locking block 126 is inserted into the first locking groove 124), the third locking block 128 is inserted into the second locking groove 127 between two adjacent extension tubes 7, and the third locking block 128 is inserted into the first locking groove 124 between the extension tube 7 near the operating tube 2 and the operating tube 2. This allows the first rotating rod 121, the third rotating rod 123, and the second rotating rod 122 to rotate synchronously when the wrench rotates the first locking block 125, so that the cutting blade 1210 cuts the soil block and supports the bottom of the soil block, making it easier to remove the soil block.

[0040] like Figure 1-11 As shown, the lower end of the operating cylinder 2 has a first slot 13, and the lower end of the extension cylinder 7 has a second slot 14 that is exactly the same as the first slot 13. The upper end of the sampling cylinder 3 is fixedly connected to a first insert 15 that is adapted to the first slot 13 and the second slot 14. The upper end of the extension cylinder 7 is fixedly connected to a second insert 16 that is adapted to the first slot 13 and the second slot 14. In use, the number of extension cylinders 7 can be increased or decreased as needed. The second insert 16 on the extension cylinder 7 closest to the operating cylinder 2 is inserted into the first slot 13 and connected by an internal hex bolt 17. The second insert 16 between two adjacent extension cylinders 7 is inserted into the second slot 14 and connected by an internal hex bolt 17. The first insert 15 on the sampling cylinder 3 is inserted into the second slot 14 on the adjacent extension cylinder 7 and connected by an internal hex bolt 17.

[0041] The working principle of a soil sampling device in this embodiment is as follows: During use, according to the required sampling depth, connect different numbers of extension tubes 7. Remove the positioning bolts 9, pull out the operating tube 2 and sampling tube 3 from the positioning frame 1, and disassemble and install the extension tubes 7. After connection, reinsert them into the positioning frame 1. By setting the positioning frame 1, the insertion of the sampling tube 3 is made more stable. After inserting the sampling tube 3 to the specified depth by pressing the handle 10 or tapping the tapping pad 11, use a wrench to rotate the first locking block 125. The cutting blade 1210 cuts the soil clods and provides some support. After inserting the sampling tube 3 into the ground... If the sample tube 3 is difficult to pull out, hold the operating lever 64 and rotate and slide it until the locking block 66 is engaged in the groove 5 in the appropriate position. Using the lever principle, the operator can step on the positioning frame 1 with their foot or press it down with a heavy object, and hold the end of the operating lever 64 away from the locking block 66 with one hand and press it down. This can help pull out the sample tube 3. This operation can also be performed by multiple operators to make the pulling out of the sample tube 3 smooth. After that, lock the locking block 66 into the groove 5 in the appropriate position below. Repeat this operation to continuously help pull out the sample tube 3, reduce the difficulty of pulling out, and thus improve the sampling efficiency.

[0042] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A soil sampling device, characterized in that: The system includes a positioning frame (1), on which an operating cylinder (2) is slidably and detachably connected. A sampling cylinder (3) is detachably connected to the lower end of the operating cylinder (2), and a ring blade (4) is fixedly connected to the lower end of the sampling cylinder (3). The side walls of the operating cylinder (2) and the sampling cylinder (3) are provided with grooves (5) at equal intervals along the length direction. An assist component (6) is provided on one side of the positioning frame (1). The assist component (6) includes a support frame (61) fixedly connected to the positioning frame (1). Two connecting rods (62) are rotatably connected to the support frame (61). Both connecting rods (62) are fixedly connected to a collar (63). An operating rod (64) slides on the collar (63). A fixing cylinder (65) is fixedly connected to one end of the operating rod (64) near the positioning frame (1). A locking block (66) is fixedly connected to the fixing cylinder (65).

2. The soil sampling device according to claim 1, characterized in that: The length of the operating lever (64) on the side of the collar (63) away from the positioning frame (1) is at least three times the length of the lever on the other side.

3. The soil sampling device according to claim 1, characterized in that: An extension tube (7) can be detachably connected between the operating tube (2) and the sampling tube (3). Two adjacent extension tubes (7) can be detachably connected. The side wall of the extension tube (7) is also provided with the groove (5).

4. A soil sampling device according to claim 3, characterized in that: After the operating cylinder (2), the extension cylinder (7) and the sampling cylinder (3) are connected, the grooves (5) are all located on the same side.

5. A soil sampling device according to claim 1, characterized in that: The assist component (6) also includes two fixing rings (67) fixed to the positioning frame (1). The inner diameter of the fixing rings (67) is the same as the inner diameter of the fixing cylinder (65). A fixing rod (68) is slidably inserted into the fixing rings (67).

6. A soil sampling device according to claim 5, characterized in that: The positioning frame (1) is fixedly connected to a mounting frame (69) on the side away from the support frame (61), and a movable wheel (610) is rotatably connected to the mounting frame (69).

7. A soil sampling device according to claim 6, characterized in that: When the positioning frame (1) is in contact with the ground, the moving wheel (610) is just out of contact with the ground.

8. A soil sampling device according to claim 5, characterized in that: A nut (611) concentrically disposed on any of the fixing rings (67), and a threaded end (612) adapted to the nut (611) is fixed to one end of the fixing rod (68).

9. A soil sampling device according to claim 1, characterized in that: A vertical plate (8) is fixedly connected to the positioning frame (1), and a screw hole is provided on the operating cylinder (2). The vertical plate (8) and the operating cylinder (2) are connected by a positioning bolt (9).

10. A soil sampling device according to claim 3, characterized in that: The lower end of the operating cylinder (2) is provided with a first slot (13), and the lower end of the extension cylinder (7) is provided with a second slot (14) that is the same as the first slot (13). The upper end of the sampling cylinder (3) is fixedly connected with a first insert (15) that is adapted to the first slot (13) and the second slot (14). The upper end of the extension cylinder (7) is fixedly connected with a second insert (16) that is adapted to the first slot (13) and the second slot (14). The operating cylinder (2) and the extension cylinder (7), the two adjacent extension cylinders (7), and the sampling cylinder (3) and the extension cylinder (7) are all connected by internal hex bolts (17).

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