Deep sampling equipment for soil in alpine meadow area

Abstract

The invention discloses an alpine meadow area soil deep layer sampling device, and relates to the technical field of soil sampling, the alpine meadow area soil deep layer sampling device comprises a sampling barrel and a handle connected to the sampling barrel, and further comprises a cutting assembly and a conveying assembly arranged in the sampling barrel, a motor is started to rotate forwards, and the motor drives a main bevel gear to rotate; auxiliary bevel gears on the two sides are driven to rotate on the periphery of a center column, extension rods on the side faces of the auxiliary bevel gears pull sleeve rods, then fixing frames are pulled to lift cutting knives, the cutting knives slide along the periphery of a collecting barrel, the auxiliary bevel gears continuously rotate, and the extension rods drive the sleeve rods to push the fixing frames to enable the cutting knives to descend and move out of gaps between the collecting barrel and a mounting frame and gaps between the fixing barrel and a sampling barrel; the cutting knife continuously ascends and descends to cut a grass felt layer root system, descending obstruction of the sampling barrel is reduced, when the sampling barrel descends to make contact with frozen soil, a cutting edge of the cutting knife impacts and extrudes, instant acting force during rapid descending breaks the frozen soil due to the compressive strength of the frozen soil, and continuous ascending and descending form a staggered cutting face to break large frozen soil into small blocks or particles.

Description

Technical Field

[0001] This invention relates to the field of soil sampling technology, and in particular to a deep soil sampling device for alpine meadow areas. Background Technology

[0002] Soil sampling is a crucial preliminary step when carrying out alfalfa planting work in alpine meadow regions. These regions possess unique and harsh natural environmental characteristics, characterized by exceptionally cold climates, extremely low annual average temperatures, and significant diurnal temperature variations. Furthermore, some areas experience seasonal permafrost, making the local soil environment extremely unique. The low temperatures have a profound impact on the soil, significantly extending the soil freezing period.

[0003] Alfalfa, also known as purple alfalfa, is a perennial herbaceous plant belonging to the genus *Alfalfa* in the legume family. It holds a pivotal position in the forage industry and is renowned as the "King of Forage." Rich in nutrients, including protein, vitamins, and minerals, it is an excellent source of feed for livestock and plays a vital role in promoting the development of animal husbandry.

[0004] However, existing technologies face numerous challenges in soil sampling in alpine meadow areas prior to alfalfa planting. The vegetation in alpine meadows is primarily composed of low-growing herbaceous plants with unique root systems that are not only densely interwoven but also largely concentrated in the shallow soil. This root distribution characteristic gradually forms a special sod layer on the soil surface. This sod layer is tightly interwoven with living roots, dead roots, and organic matter, resulting in a dense and tough texture. During sampling, it is difficult for sampling tools to penetrate this sod layer, leading to samples that cannot accurately represent the soil conditions at the target depth. This significantly increases the difficulty of obtaining pure, representative soil samples, causing considerable inconvenience and uncertainty for subsequent soil analysis and alfalfa planting planning. Summary of the Invention

[0005] The purpose of this invention is to solve the problem that in the prior art, soil sampling is required in alpine meadow areas before planting alfalfa. Since the vegetation in alpine meadow areas is mainly low-growing herbaceous plants with dense and shallow root systems, a grassy layer (composed of living roots, dead roots, and organic matter) easily forms on the soil surface, which increases the difficulty of sampling. Therefore, this invention proposes a deep soil sampling device for alpine meadow areas.

[0006] To achieve the above objectives, the present invention employs the following technology: a deep soil sampling device for alpine meadow areas, comprising a sampling cylinder and a handle connected to the sampling cylinder, characterized in that it further comprises: a cutting component and a conveying component disposed inside the sampling cylinder; The cutting assembly includes a fixed cylinder fixed in the center of the sampling cylinder, and a rotatable mounting frame circumferentially mounted on the outer periphery of the fixed cylinder via a sliding member. A collection cylinder for collecting soil is fixedly connected to the bottom of the mounting frame. A motor is installed inside the fixed cylinder. The output shaft of the motor passes downward through the fixed cylinder and the mounting frame and is connected to a main bevel gear. A clearance groove is provided inside the mounting frame to avoid the main bevel gear. Symmetrical central columns are fixed on both sides of the mounting frame, and secondary bevel gears that mesh with the main bevel gear are symmetrically rotated around the outer periphery of the central columns. Each secondary bevel gear is connected to a cutting blade via a transmission member. The motor drives the main bevel gear to rotate, which in turn drives the secondary bevel gear to rotate. The secondary bevel gear converts the rotational motion into the reciprocating lifting motion of the cutting blade relative to the collecting cylinder through the transmission component, so as to cut and break the grass and frozen soil layers in the soil.

[0007] Further description of a deep soil sampling device for alpine meadow regions as described above: The sliding component includes an annular groove formed on the outer periphery of the fixed cylinder. A plurality of connecting brackets are rotatably connected to the inner wall of the annular groove, and one side of the plurality of connecting brackets is fixed to the mounting bracket.

[0008] Further description of a deep soil sampling device for alpine meadow regions as described above: The transmission component includes an extension rod fixed to the side of the secondary bevel gear and away from the central column, and a fixing frame fixed to the cutting blade. The extension rod is close to the edge of the secondary bevel gear, and a fixing rod is fixed to the inner wall of the fixing frame. The fixing rod and the extension rod are connected by a sleeve rod.

[0009] Further description of a deep soil sampling device for alpine meadow regions as described above: The top of the sampling tube has several heat dissipation vents arranged in a circular array.

[0010] Further description of a deep soil sampling device for alpine meadow regions as described above: The top of the mounting bracket has a groove, and several snap-fit ​​blocks are fixed to the outer periphery of the motor's output end.

[0011] Further description of a deep soil sampling device for alpine meadow regions as described above: The inner wall of the groove is fixed with several welding frames, and the inner walls of the welding frames are fixed with positioning posts. The outer periphery of the positioning posts is rotatably connected with contact blocks that contact the snap-fit ​​blocks. The inner walls of the welding frames are connected with spring sheets and limiting blocks that contact the contact blocks.

[0012] Further description of a deep soil sampling device for alpine meadow regions as described above: The conveying assembly includes a cutting block that is slidably and detachably connected to the inner wall of the collection cylinder, and the bottom of the cutting block has an inclined surface.

[0013] Further description of a deep soil sampling device for alpine meadow regions as described above: The top of the cutting block is fixed with a threaded plate that adheres to the inner wall of the collecting cylinder.

[0014] In summary, due to the adoption of the above-mentioned technology in this deep soil sampling device for alpine meadow areas, the beneficial effects of this invention are: When sampling soil in alpine meadow areas using the set cutting and conveying components, the sampling tube is first placed vertically and stably above the soil. The handle is then pressed down to make the sampling tube penetrate deeper into the soil. Due to the tight interweaving of the grass layer, it is difficult to continue pressing down. At this time, the motor is started to rotate forward. The motor drives the main bevel gear to rotate, which in turn drives the two side secondary bevel gears to rotate around the central column. The side extension rod pulls the sleeve rod, which in turn pulls the fixing frame to lift the cutting blade, allowing it to slide along the outer circumference of the collection tube. The secondary bevel gears continue to rotate, and the extension rod drives the sleeve rod to push the fixing frame, causing the cutting blade to descend and move out of the gap between the collection tube, the mounting frame, the fixing tube, and the sampling tube. The cutting blade continues to rise and fall to cut the grass layer roots, reducing the obstruction to the descent of the sampling tube. When the cutting blade descends and contacts the frozen soil, the impact and compression of the blade cause the instantaneous force during rapid descent to exceed the compressive strength of the frozen soil, causing it to break. The continuous rise and fall creates staggered cutting surfaces, breaking large pieces of frozen soil into smaller pieces or granules. In soil sampling before alfalfa planting, the broken frozen soil is easier to obtain by the sampling tool, facilitating subsequent processing and analysis. It can smoothly enter the collection tube, improving sampling efficiency and accuracy. The reduced hardness of the frozen soil makes it easier to insert the sampling tube, reducing damage and sampling difficulties. When the motor is started in reverse, the outer peripheral locking block of the output shaft pushes the welding frame connected to the contact block that is restricted by the limiting block, which drives the mounting frame to rotate. Its outer peripheral connecting frame rotates in the annular groove. The motor drives the main bevel gear to rotate, which in turn drives the secondary bevel gear to rotate. The extension rod pulls the sleeve rod, which causes the fixed frame to pull the cutting blade up and down. The cutting blade rotates while rising and falling, cutting the roots of the grass mat layer by rising and rotating, improving the cutting and crushing effect, and allowing the soil to enter the collection cylinder more smoothly. When the motor reverses, the mounting frame drives the bottom collection cylinder to rotate, the sampling cylinder continues to descend, and the soil slides into the collection cylinder along the inclined surface of the cutting block. As the collection cylinder rotates, the soil inside is conveyed upward with the rotation of the threaded plate, avoiding blockage of the collection port. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure according to the present invention is shown; Figure 2 A schematic diagram of the internal structure of the sampling cylinder according to the present invention is shown; Figure 3 The present invention is shown Figure 2 Enlarged view of a portion of point A in the middle; Figure 4A schematic diagram of the internal structure of the collection cylinder according to the present invention is shown; Figure 5 The present invention is shown Figure 4 Enlarged view of a portion of point B in the middle; Figure 6 A schematic diagram of the main bevel gear structure according to the present invention is shown; Figure 7 A schematic diagram of the groove structure according to the present invention is shown; Figure 8 The present invention is shown Figure 4 A magnified view of a portion of point C in the middle.

[0016] Legend: 11. Sampling cylinder; 12. Handle; 20. Cutting assembly; 21. Fixing cylinder; 22. Annular groove; 221. Connecting frame; 222. Mounting frame; 23. Collecting cylinder; 24. Motor; 241. Main bevel gear; 242. Clearance groove; 243. Central column; 244. Secondary bevel gear; 245. Extension rod; 246. Sleeve rod; 247. Cutting blade; 248. Fixing frame; 249. Fixing rod; 25. Heat dissipation vent; 26. Groove; 261. Snap-fit ​​block; 262. Welding frame; 263. Positioning post; 264. Contact block; 265. Spring sheet; 266. Limiting block; 30. Conveying assembly; 31. Cutting block; 32. Threaded plate. Detailed Implementation

[0017] The following will describe, with reference to the accompanying drawings of the embodiments of the present invention, a deep soil sampling device for alpine meadow areas according to the present invention in a clear and complete manner. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. 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.

[0018] like Figures 1-8 As shown, the present invention provides a deep soil sampling device for alpine meadow areas: including a sampling cylinder 11 and a handle 12 connected to the sampling cylinder 11, and further including a cutting component 20 and a conveying component 30 disposed inside the sampling cylinder 11. When it is necessary to take soil samples from alpine meadow areas, first adjust the sampling tube 11 to a position perpendicular to the soil surface of the alpine meadow area and place it steadily on the soil. Then, press down on the handle 12 with your hand. The pressure transmitted by the handle 12 will push the sampling tube 11 to gradually penetrate into the soil of the alpine meadow area.

[0019] like Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, the cutting assembly 20 includes a fixed cylinder 21 fixed in the center of the sampling cylinder 11, and a rotatable mounting frame 222 circumferentially disposed around the fixed cylinder 21 by a sliding member. The sliding member includes an annular groove 22 formed on the outer periphery of the fixed cylinder 21. A plurality of connecting frames 221 are rotatably connected to the inner wall of the annular groove 22, and one side of the plurality of connecting frames 221 is fixed to the mounting frame 222. A collection cylinder 23 for collecting soil is fixedly connected to the bottom of the mounting frame 222. A gap is provided between the collection cylinder 23 and the mounting frame 222, as well as between the fixed cylinder 21 and the sampling cylinder 11. A motor 24 is installed inside the fixed cylinder 21. The specific model of the motor 24 is adjusted according to the actual use. The output shaft of the motor 24 passes downward through the fixed cylinder 21 and the mounting bracket 222 and is connected to the main bevel gear 241. The mounting bracket 222 has a clearance groove 242 to avoid the main bevel gear 241. Symmetrical central columns 243 are fixed on both sides of the mounting bracket 222. The outer periphery of the central columns 243 is symmetrically rotated with secondary bevel gears 244 that mesh with the main bevel gear 241. Each secondary bevel gear 244 is connected to a cutting blade 247 through a transmission component. The cutting blade 247 is located in the collection cylinder. Within the gap between the collection tube 23, the mounting bracket 222, the fixed tube 21, and the sampling tube 11, the cutting blade 247 is slidably connected to the outer periphery of the collection tube 23. The transmission component includes an extension rod 245 fixed to the side of the secondary bevel gear 244 and away from the central column 243, and a fixed bracket 248 fixed to the cutting blade 247. The extension rod 245 is close to the edge of the secondary bevel gear 244. A fixed rod 249 is fixed to the inner wall of the fixed bracket 248. The fixed rod 249 and the extension rod 245 are rotatably connected by a sleeve rod 246. The top of the sampling tube 11 is provided with several heat dissipation vents 25 arranged in a circular array. The top of the mounting bracket 222 is provided with a groove 26. Several snap-fit ​​blocks 261 are fixed on the outer periphery of the output end of the motor 24. Several welding brackets 262 are fixed on the inner wall of the groove 26. Positioning posts 263 are fixed between the inner walls of the welding brackets 262. Contact blocks 264 that contact the snap-fit ​​blocks 261 are rotatably connected to the outer periphery of the positioning posts 263. Spring plates 265 that contact the contact blocks 264 and limiting blocks 266 are connected between the inner walls of the welding brackets 262. When the sampling tube 11 is inserted into the soil, due to the tight interweaving of the grass layer in the alpine meadow soil, even if the handle 12 is pressed down hard, the sampling tube 11 is still difficult to continue to be pressed into the soil. At this time, the motor 24 is started to rotate forward, and the locking block 261 on the outer periphery of its output shaft will contact the contact block 264, pushing the contact block 264 to rotate on the outer periphery of the positioning post 263 and squeezing the spring plate 265. When the locking block 261 is separated from the contact block 264, the spring plate 265 in the squeezed state rebounds, pushing the contact block 264 to reset and contact the limiting block 266. This design makes the mounting bracket 222 and the collection tube 23 not rotate with the output shaft of the motor 24 under the influence of their own gravity. At the same time, the motor 24 drives the main bevel gear 241 to rotate. The rotation of the main bevel gear 241 drives the secondary bevel gears 244 on both sides to rotate around the central column 243. As the secondary bevel gears 244 rotate, the extension rod 245 on its side also rotates, thereby pulling the sleeve rod 246. The sleeve rod 246 pulls the fixing frame 248 connected to the fixing rod 249, causing the fixing frame 248 to lift the cutting blade 247. The cutting blade 247 slides along the outer periphery of the collection cylinder 23. As the secondary bevel gear 244 continues to rotate, the extension rod 245 drives the sleeve rod 246 to push the fixing frame 248 connected to the fixing rod 249, causing the fixing frame 248 to push the cutting blade 247 down. As the cutting blade 247 descends, it moves out of the gap between the collection cylinder 23 and the mounting frame 222, as well as between the fixing cylinder 21 and the sampling cylinder 11. As the cutting blade 247 continues to rise and fall, it cuts the tightly intertwined root system of the grass layer, effectively reducing the obstruction of the sampling tube 11 as it descends. At the same time, as the cutting blade 247 continues to descend, it comes into contact with the frozen soil. When the cutting blade 247 inserts into the frozen soil, its blade will exert a direct impact and compression on the frozen soil. In particular, when the cutting blade 247 descends rapidly, the instantaneous force will exceed the compressive strength of the frozen soil, causing the frozen soil to crack. Moreover, during the continuous rising and falling process, the cutting blade 247 will form multiple intersecting cutting surfaces in the frozen soil, further aggravating the degree of fragmentation of the frozen soil and breaking large pieces of frozen soil into smaller blocks or granules. In the soil sampling work before alfalfa planting, the broken frozen soil is easier to obtain by the sampling tool and is also easier to process and analyze the sample. The broken frozen soil can enter the collection tube 23 more smoothly, which improves the efficiency and accuracy of sampling. In addition, since the cutting blade 247 loosens and breaks the frozen soil, the hardness of the frozen soil is reduced, making it easier to obtain by the collection tube 23. During sampling, the sampling tube 11 can be inserted into the frozen soil more easily, reducing the possibility of damage to the sampling tube 11 or sampling difficulties caused by the hardness of the frozen soil. To further improve the cutting effect on the tightly interwoven roots of the grass mat layer, the motor 24 can be reversed. As the motor 24 reverses, the locking block 261 on the outer periphery of its output shaft will contact the contact block 264 restricted by the limiting block 266, pushing the welding frame 262 connected to the contact block 264, thereby causing the mounting frame 222 to rotate as well. The connecting frame 221 on the outer periphery of the mounting frame 222 will also rotate within the annular groove 22. At the same time, the motor 24 drives the main bevel gear 241 to rotate, and the main bevel gear 241 drives the secondary bevel gears 244 on both sides to rotate in the central column 243. The outer circumference rotates, and the secondary bevel gear 244 drives the extension rod 245 to rotate. The extension rod 245 pulls the sleeve rod 246, and the sleeve rod 246 pulls the fixing frame 248 connected to the fixing rod 249, so that the fixing frame 248 pulls the cutting blade 247 up and down. At this time, the cutting blade 247 is in a state of rising and falling while rotating, which can cut the tightly intertwined root system of the sod layer by rising and falling and rotating. This further improves the cutting effect of the cutting blade 247 on the tightly intertwined root system of the sod layer, and also improves the breaking effect on the frozen soil, so that the cut and broken soil can enter the collection cylinder 23 more smoothly.

[0020] like Figure 4 , Figure 8 As shown, the conveying assembly 30 includes a cutting block 31 that is slidably and detachably connected to the inner wall of the collection cylinder 23. The bottom of the cutting block 31 is provided with an inclined surface, and the top of the cutting block 31 is fixed with a threaded plate 32 that is in contact with the inner wall of the collection cylinder 23. When the motor 24 reverses, the mounting frame 222 rotates synchronously. As the mounting frame 222 rotates, the collection cylinder 23 at its bottom also begins to rotate. At this time, the sampling cylinder 11 continues to descend, and the soil slides into the collection cylinder 23 along the inclined surface of the cutting block 31. Meanwhile, since the collection cylinder 23 is rotating, the soil entering the collection cylinder 23 will be conveyed upward with the rotation of the internal threaded plate 32, effectively avoiding the blockage of the collection port of the collection cylinder 23.

[0021] Working principle: When it is necessary to sample the soil in the alpine meadow area, first place the sampling tube 11 vertically and stably above the soil, then press down the handle 12 by hand to push the sampling tube 11 into the soil. When the sampling tube 11 goes deeper, because the grass layer is tightly interwoven, even if you press down hard, the sampling tube 11 will have difficulty going deeper. At this time, the starting motor 24 slowly and uniformly rotates forward, and the locking block 261 on the outer periphery of its output shaft contacts the contact block 264, pushing the contact block 264 to rotate on the outer periphery of the positioning post 263 and squeezing the spring plate 265. After the locking block 261 disengages from the contact, the spring plate 265 rebounds and pushes the contact block 264 to reset and contact the limiting block 266, so that the mounting bracket 222 and the collecting cylinder 23 do not rotate with the output shaft under their own weight. At the same time, the motor 24 drives the main bevel gear 241 to rotate, which drives the two side secondary bevel gears 244 to rotate around the central column 243. The extension rod 245 on the side of the secondary bevel gear 244 rotates accordingly, pulling the sleeve rod 246, which in turn pulls the fixing frame 248 connected to the fixing rod 249, causing the fixing frame 248 to lift the cutting blade 247. The cutting blade 247 slides along the outer periphery of the collection cylinder 23. The secondary bevel gear 244 continues to rotate, and the extension rod 245 drives the sleeve rod 246 to push the fixing frame 248, causing the cutting blade 247 to descend and move out of the gap between the collection cylinder 23, the mounting frame 222, and the fixing cylinder 21 and the sampling cylinder 11. The cutting blade 247 continuously rises and falls, cutting the tightly intertwined root system of the grass mat layer, reducing the obstruction of the sampling tube 11 as it descends. At the same time, when the cutting blade 247 descends and comes into contact with the frozen soil, the blade will impact and compress the frozen soil. When it descends rapidly, the instantaneous force exceeds the compressive strength of the frozen soil, causing the frozen soil to crack. During the continuous rising and falling process, the cutting blade 247 forms multiple intersecting cutting surfaces in the frozen soil, which intensifies the degree of frozen soil fragmentation and breaks large pieces of frozen soil into small pieces or granules. In the soil sampling work before alfalfa planting, the broken frozen soil is easier to obtain by the sampling tool, which facilitates subsequent processing and analysis. It can enter the collection tube 23 more smoothly, improving sampling efficiency and accuracy. Moreover, after the hardness of the frozen soil is reduced, the sampling tube 11 is easier to insert, reducing the possibility of damage to the sampling tube 11 or sampling difficulties. To further improve the cutting effect on the tightly intertwined roots of the sod layer, the motor 24 can be started and slowly reversed at a constant speed. The snap-fit ​​block 261 on the outer periphery of its output shaft contacts the contact block 264 restricted by the limiting block 266, pushing the welding frame 262 connected to the contact block 264, which in turn drives the mounting frame 222 to rotate. The connecting frame 221 on the outer periphery of the mounting frame 222 rotates in the annular groove 22. At the same time, the motor 24 drives the main bevel gear 241 to rotate, which drives the secondary bevel gear 244 to rotate. The secondary bevel gear 244 drives the extension rod 245 to rotate, pulling the sleeve rod 246 and the fixing frame 248, so that the cutting blade 247 rises and falls while rotating, cutting the roots of the sod layer by rising and falling and rotating, improving the cutting effect and the breaking effect on the frozen soil, and allowing the broken soil to enter the collection cylinder 23 more smoothly. When the motor 24 reverses, the mounting frame 222 drives the bottom collection cylinder 23 to rotate, the sampling cylinder 11 continues to descend, and the soil slides into the collection cylinder 23 along the inclined surface of the cutting block 31. As the collection cylinder 23 rotates, the soil inside will be conveyed upward with the rotation of the threaded plate 32 to avoid clogging of the collection port.

[0022] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technology of the present invention, to provide a deep soil sampling device for alpine meadow areas and its inventive concept, should be covered within the scope of protection of the present invention.

Claims

1. An alpine meadow area soil deep layer sampling device, comprising a sampling cylinder (11) and a handle (12) connected to the sampling cylinder (11), characterized in that, Also include: The cutting assembly (20) is arranged in the sampling cylinder (11) and the conveying assembly (30); The cutting assembly (20) includes a fixed cylinder (21) fixed in the center of the sampling cylinder (11), and a rotatable mounting frame (222) arranged around the outer periphery of the fixed cylinder (21), the bottom of the mounting frame (222) is fixedly connected with a collecting cylinder (23) for collecting soil, a motor (24) is installed in the fixed cylinder (21), the output shaft of the motor (24) penetrates the fixed cylinder (21) and the mounting frame (222) downward and is connected with a main bevel gear (241), the inside of the mounting frame (222) is provided with an avoiding slot (242) avoiding the main bevel gear (241), the two sides of the mounting frame (222) are fixedly provided with symmetric center columns (243), and the outer periphery of the center column (243) is symmetrically provided with a secondary bevel gear (244) meshing with the main bevel gear (241), each secondary bevel gear (244) is connected with a cutting knife (247) through a transmission member; The motor (24) drives the main bevel gear (241) to rotate, and then drives the secondary bevel gear (244) to rotate, the secondary bevel gear (244) converts the rotary motion into the reciprocating lifting motion of the cutting knife (247) relative to the collecting cylinder (23), so as to realize the cutting and crushing of the grass felt layer and the frozen soil layer in the soil.

2. The high-cold meadow area soil deep layer sampling device according to claim 1, characterized in that, The sliding member includes a ring groove (22) arranged around the outer periphery of the fixed cylinder (21), and the inner wall of the ring groove (22) is rotatably connected with a plurality of connecting frames (221), and one side of the connecting frame (221) is fixedly connected with the mounting frame (222).

3. The alpine meadow area soil deep layer sampling device according to claim 2, characterized in that, The transmission member includes an extension rod (245) fixed on the side of the secondary bevel gear (244) and away from the center column (243), and a fixed frame (248) fixed on the cutting knife (247), and the edge of the extension rod (245) is close to the secondary bevel gear (244), the inner wall of the fixed frame (248) is fixedly provided with a fixed rod (249), and the fixed rod (249) and the extension rod (245) are connected through a sleeve rod (246).

4. The alpine meadow area soil deep layer sampling device according to claim 3, characterized in that, The top of the sampling cylinder (11) is provided with a plurality of circular array heat dissipation openings (25).

5. The alpine meadow region soil deep layer sampling device according to claim 4, characterized in that, The top of the mounting frame (222) is provided with a groove (26), and the outer periphery of the output end of the motor (24) is fixedly provided with a plurality of clamping blocks (261).

6. The alpine meadow region soil deep layer sampling device according to claim 5, characterized in that, The inner wall of the groove (26) is fixedly provided with a plurality of welding frames (262), and the inner wall of the welding frame (262) is fixedly provided with a positioning column (263), the outer periphery of the positioning column (263) is rotatably connected with a contact block (264) in contact with the clamping block (261), the inner wall of the welding frame (262) is connected with a spring sheet (265) and a limiting block (266) in contact with the contact block (264).

7. The alpine meadow region soil deep layer sampling device according to claim 1, characterized in that, The conveying assembly (30) includes a cutting block (31) slidably and detachably connected to the inner wall of the collecting cylinder (23), and the bottom of the cutting block (31) is provided with an inclined surface.

8. The alpine meadow region soil deep layer sampling device according to claim 7, characterized in that, The top of the cutting block (31) is fixedly provided with a threaded plate (32) attached to the inner wall of the collecting cylinder (23).

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