Soil sampler

Abstract

The invention discloses a soil sampler in the technical field of soil sampling, and the soil sampler comprises a sampling unit, the sampling unit comprises a limiting part arranged in the vertical direction, a conversion part rotatably inserted into the limiting part, and a pumping part sleeving the conversion part, and the two sides of the pumping part extend outwards to the outside of the limiting part; the sampling component is slidably inserted into the lower end of the conversion component in the vertical direction, the sampling component downwards penetrates through the bottom end of the limiting component and extends to the outside, and the pressure component is sleeved between the upper end and the lower end of the sampling component in the vertical direction. By arranging the sampling unit with a brand new structure, the influence of manual errors in the sampling process is avoided, the operation steps are simplified, the operation of rotating downwards to go deep into a soil layer for sampling can be realized only by carrying out simple up-and-down pumping actions, the sampling work efficiency is improved, and the sampling time is shortened. And the soil sample in the sampling part is discharged outwards in a supporting manner, so that fracture or staggered layers of the soil sample are avoided, and the soil is ensured to be in a natural state.

Description

Technical Field

[0001] The invention relates to the technical field of soil sampling, in particular to a soil sampler. Background Art

[0002] Soil sampling is an important part of soil science research and agricultural production. Through scientific sampling and analysis, it can provide important data support for sustainable agricultural development, ecological environmental protection and human health. When using a sampler to collect soil samples, the sampler needs to be pointed vertically downward so that the sampling tube is against the bottom surface. Then, the sampling operation is performed by holding the handle with both hands and pressing down while rotating back and forth. In order to maintain the natural condition of the soil, the downward pressure should be uniform. After sampling, the soil can be pushed outward by the push rod placed inside the sampler or the empty groove opened on the outer wall of the sampling tube, and the soil can be taken out with the help of gravity.

[0003] However, the verticality of the sampler inserted in the vertical direction and the force of the downward pressure in the above sampling work are all judged and operated manually, and manual operation will have large errors. A large deviation in verticality will make the soil samples obtained not in the same vertical direction. A large deviation in the force applied will cause the soil samples to be compacted and merged together, which will make it impossible for the soil layer obtained at the sampling site to maintain a natural state, thereby affecting the subsequent soil sample analysis data. At the same time, the method of taking out soil samples only by relying on the cooperation of the push rod, the empty slot and gravity has great disadvantages. When the soil is relatively humid, the edge of the soil sample will adhere to the inner wall of the sampling barrel due to the interaction with the sample (in order to ensure that the soil sample does not fall off accidentally, the inner wall surface of the sampling barrel will be relatively rough and have a large adhesion resistance), while there is no adhesion in the center of the soil sample. At this time, the soil sample is pushed by the push rod, and the center of the soil sample falls faster than the edge due to the dual influence of the push rod and gravity. Therefore, the soil sampling layer is prone to breakage or dislocation, and cannot present the most original natural condition. The soil sample attached to the inner wall of the sampling barrel cannot be discharged smoothly and remains on the outer wall of the sampling barrel. Summary of the invention

[0004] In view of the above problems existing in the existing soil samplers, the inventors hereby propose a soil sampler to solve such problems.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a soil sampler, comprising: The sampling unit includes a limiting component arranged in a vertical direction, a conversion component rotatably inserted in the limiting component, a pumping component sleeved on the conversion component, and both sides of the pumping component extend outward to the outside of the limiting component, a sampling component slidably inserted in the lower end of the conversion component in a vertical direction, and the sampling component extends downward through the bottom end of the limiting component to the outside, a pressure component sleeved between the upper and lower ends of the sampling component in a vertical direction, and the two ends of the pressure component respectively abut against the bottom end of the limiting component and the top surface of the lower end of the sampling component, and a sample outlet component installed in the lower end of the sampling component.

[0006] As a preferred embodiment of the soil sampler described in the present invention, the limiting component includes a limiting cylinder sleeved on the outside of the conversion component, limiting grooves symmetrically arranged on both sides of the limiting cylinder in the vertical direction, and both sides of the pumping component pass through the limiting grooves, an abutment plate fixedly connected to the end of the limiting cylinder, a first clearance groove arranged on the bottom surface of the abutment plate, and the top end of the pressure component abuts against the first clearance groove, and a clearance hole arranged at the center position of the abutment plate, and the sampling component passes through the clearance hole.

[0007] As a preferred solution of the soil sampler described in the present invention, the limiting component also includes two groups of supporting feet symmetrically arranged on both sides of the lower end of the limiting cylinder in the vertical direction, and the ends of the supporting feet extend laterally outward, a friction pad arranged on the bottom surface of the ends of the supporting feet, a limiting belt arranged above the ends of the supporting feet, and a limiting hole opened on the ends of the supporting feet in the vertical direction.

[0008] As a preferred solution of the soil sampler described in the present invention, a lubrication groove matching the structure of the conversion component is opened inside the limiting component, and the two ends of the lubrication groove are spherical structures, and the two ends of the conversion component are respectively abutted in the spherical structures at the two ends of the lubrication groove.

[0009] As a preferred embodiment of the soil sampler described in the present invention, the conversion component includes a rotating shaft located in the lubrication groove, and both ends of the rotating shaft are spherical structures, and four groups of spiral grooves are evenly distributed on the outer wall of the rotating shaft, and the four groups of spiral grooves are spirally wound on the outer wall of the rotating shaft.

[0010] As a preferred embodiment of the soil sampler described in the present invention, the pumping component includes a ring sleeved on the rotating shaft, four groups of conversion beads equally arranged on the inner wall of the ring, and the outer ends of the four groups of conversion beads respectively extend into four groups of spiral grooves, two groups of sliders symmetrically arranged on both sides of the ring, and the sliders extend into the limit grooves for sliding connection, and handles respectively fixedly connected to the outside of the two groups of sliders in a transverse direction.

[0011] As a preferred embodiment of the soil sampler described in the present invention, the sampling component includes a limit shaft which is slidably inserted in the rotating shaft in the vertical direction, and the limit shaft extends downward through the clearance hole to the outside of the abutment plate, a top plate fixedly arranged at the end of the limit shaft, a second clearance groove opened on the top surface of the top plate, and the end of the pressure component abuts in the second clearance groove, a sampling barrel fixedly connected to the bottom of the top plate, two groups of sampling grooves equally divided in annular shape on the sampling barrel, and multiple groups of teeth equally divided and surrounding the end of the sampling barrel.

[0012] As a preferred embodiment of the soil sampler described in the present invention, the sampling groove is divided into a transverse groove opened horizontally on the sampling tube, a card groove opened at one end of the transverse groove and extending upward, and a slide groove arranged at the other end of the transverse groove and extending downward to the end of the sampling tube.

[0013] As a preferred embodiment of the soil sampler described in the present invention, the pressure component includes a pressure spring sleeved on a limiting shaft, and two groups of connecting rings symmetrically fixed at both ends of the pressure spring, and multiple groups of balls are evenly distributed on the outer ends of each group of connecting rings.

[0014] As a preferred embodiment of the soil sampler described in the present invention, the sampling component includes a tray located inside the sampling barrel, and the outer diameter of the tray is fitted with the inner diameter of the sampling barrel, two groups of locking blocks are fixedly arranged on both sides of the tray, and the two groups of locking blocks extend into the two groups of sampling grooves accordingly, and a pressure ring is sleeved on the outside of the sampling barrel, and the outer ends of the two groups of locking blocks are fixedly connected to the inner side of the pressure ring, and two groups of support plates are symmetrically arranged under the tray, and the two groups of support plates are both fitted on the inner wall of the sampling barrel.

[0015] Beneficial effects of the present invention: 1. The support feet on both sides of the limit component are used to stabilize the verticality of the downward insertion of the sampling unit, and then a stable downward pressure is applied by the pressure component, which replaces the manual positioning and pressure application method, avoids the influence of human errors in the sampling process, and can effectively ensure that the soil samples obtained are in a natural state, thereby ensuring the accuracy of soil analysis data.

[0016] 2. Through the cooperation between the conversion component and the pumping component, the operator only needs to perform simple up and down pumping movements to drive the sampling component to rotate downward into the soil layer for sampling, which simplifies the operating steps in the traditional sampling process, reduces the labor intensity of the work, and greatly improves the work efficiency of the sampling work.

[0017] 3. The soil sample is taken out by cooperating with the sampling component through the sampling component. Rotating the sampling component can cut off the adhesion between the outside of the soil sample and the inner wall of the sampling component, and the soil sample in the sampling component can be discharged outwards by the sampling component in a supporting manner, effectively avoiding the fracture or dislocation of the discharged soil sample layer caused by the high humidity of the soil sample adsorbing the inner wall of the sampling component, thereby ensuring that the soil is in a perfect natural state. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them: Figure 1 It is a schematic diagram of the overall structure of the soil sampler of the present invention.

[0019] Figure 2 It is a schematic diagram of the internal structure of the soil sampler of the present invention.

[0020] Figure 3 It is a schematic diagram of the structural decomposition of the soil sampler of the present invention.

[0021] Figure 4 It is a schematic structural diagram of the limiting component of the soil sampler of the present invention.

[0022] Figure 5 It is a structural schematic diagram of the soil sampler conversion component of the present invention.

[0023] Figure 6 It is a schematic structural diagram of the pumping component of the soil sampler of the present invention.

[0024] Figure 7 It is a schematic structural diagram of the sampling component of the soil sampler of the present invention.

[0025] Figure 8 It is a schematic structural diagram of the pressure component of the soil sampler of the present invention.

[0026] Fig. 9 It is a schematic structural diagram of the sampling component of the soil sampler of the present invention.

[0027] Fig.10 It is a structural schematic diagram of the connection position between the pressure component and the sample output component of the soil sampler of the present invention.

[0028] Reference numerals: 100, sampling unit; 101a, limiting cylinder; 101b, limiting groove; 101c, abutment plate; 101d, first clearance groove; 101e, clearance hole; 101f, supporting foot; 101g, friction pad; 101h, limiting belt; 101i, limiting hole; 101j, lubrication groove; 102, conversion component; 102a, rotating shaft; 102b, spiral groove; 103, pumping component; 103a, sleeve ring; 103b, conversion bead ; 103c, slider; 103d, handle; 104, sampling component; 104a, limit shaft; 104b, top plate; 104c, second make way groove; 104d, sampling tube; 104e, sampling groove; 104f, teeth; 105, pressure component; 105a, pressure spring; 105b, connecting ring; 105c, ball bearing; 106, sample output component; 106a, tray; 106b, locking block; 106c, pressure ring; 106d, support plate. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] Reference Figures 1 to 10 , is an embodiment of the present invention, comprising a soil sampler, comprising, a sampling unit 100, comprising a limiting component 101 arranged in a vertical direction, a conversion component 102 rotatably inserted in the limiting component 101, a pumping component 103 sleeved on the conversion component 102, and both sides of the pumping component 103 extend outward to the outside of the limiting component 101, a sampling component 104 slidably inserted in the lower end of the conversion component 102 in a vertical direction, and the sampling component 104 extends downward through the bottom end of the limiting component 101 to the outside, a pressure component 105 sleeved between the upper and lower ends of the sampling component 104 in a vertical direction, and the two ends of the pressure component 105 respectively abut against the bottom end of the limiting component 101 and the top surface of the lower end of the sampling component 104, and a sample discharging component 106 installed in the lower end of the sampling component 104.

[0032] Among them, combined Figure 4The limiting component 101 includes a limiting cylinder 101a sleeved on the outside of the conversion component 102, limiting grooves 101b symmetrically opened on both sides of the limiting cylinder 101a in the vertical direction, and both sides of the pumping component 103 pass through the limiting grooves 101b, a contact plate 101c fixedly connected to the end of the limiting cylinder 101a, a first clearance groove 101d opened on the bottom surface of the contact plate 101c, and the top end of the pressure component 105 abuts against the first clearance groove 101d, and a clearance hole 101e opened at the center position of the contact plate 101c, and the sampling component 104 passes through the clearance hole 101e.

[0033] During use, the two sets of limiting grooves 101b can be limited in the circumferential direction so that it can only slide up and down in the vertical direction along the limiting grooves 101b. The inner diameter of the positioning hole 101e is larger than the size of the limiting shaft 104a, so the limiting shaft 104a can rotate in the positioning hole 101e.

[0034] Further, combined with Figure 4 The limiting component 101 also includes two groups of supporting feet 101f symmetrically arranged on both sides of the lower end of the limiting cylinder 101a in the vertical direction, and the ends of the supporting feet 101f extend laterally outward, a friction pad 101g is arranged on the bottom surface of the end of the supporting foot 101f, a limiting belt 101h is arranged above the end of the supporting foot 101f, and a limiting hole 101i is opened on the end of the supporting foot 101f in the vertical direction.

[0035] During use, the two sets of supporting feet 101f can limit and fix the limiting component 101 as a whole from both sides, so that it remains in an upright state. By stepping on the end of the supporting foot 101f with both feet, the supporting foot 101f can be tightly abutted against the bottom surface, and then the foot is connected to the supporting foot 101f through two limiting belts 101h, which can limit the supporting foot 101f and prevent it from moving. The bottom surface of the friction pad 101g is provided with a groove that increases the friction with the ground, which can further enhance the connectivity with the ground, and the limiting hole 101i can be used in conjunction with tools such as pins to provide another fixing method.

[0036] Further, combined with Figure 2 A lubrication groove 101j matching the structure of the conversion component 102 is opened inside the limiting component 101, and the two ends of the lubrication groove 101j are spherical structures, and the two ends of the conversion component 102 are respectively abutted in the spherical structures at the two ends of the lubrication groove 101j.

[0037] During use, combine Figure 2The spherical structures at both ends of the lubrication groove 101j are spherically abutted against the two ends of the rotating shaft 102a, and the contact surfaces of the two directly abutting in the vertical direction are converted into arc-shaped contact surfaces. The spherical arc surface has good lubricity, which can reduce the friction between the two when the rotating shaft 102a rotates. At the same time, the lubricity between the two can be further increased by field lubricating oil and the like, making the rotating shaft 102a easier to rotate, thereby saving the labor intensity of personnel during operation.

[0038] Among them, combined Figure 5 The conversion component 102 includes a rotating shaft 102a located in the lubrication groove 101j, and both ends of the rotating shaft 102a are spherical structures, and four groups of spiral grooves 102b are evenly distributed on the outer wall of the rotating shaft 102a, and the four groups of spiral grooves 102b are spirally wound on the outer wall of the rotating shaft 102a.

[0039] Among them, combined Figure 6 The pumping component 103 includes a ring 103a sleeved on the rotating shaft 102a, four groups of conversion beads 103b are equally arranged on the inner wall of the ring 103a, and the outer ends of the four groups of conversion beads 103b extend into the four groups of spiral grooves 102b respectively, two groups of sliders 103c are symmetrically arranged on both sides of the ring 103a, and the sliders 103c extend into the limiting grooves 101b for sliding connection, and handles 103d are respectively and transversely fixedly connected to the outer sides of the two groups of sliders 103c.

[0040] During use, combine Figure 2 The sliders 103c on both sides enable the pumping component 103 to move only in the vertical direction along the limiting groove 101b. When the pumping component 103 moves in the vertical direction, the pumping component 103 drives the conversion bead 103b to move, and the outer end of the conversion bead 103b extends into the spiral groove 102b, and the conversion component 102 is integrally connected to the limiting component 101 for rotation. Therefore, when the pumping component 103 drives the conversion bead 103b to move downward, the pumping component 103 applies a vertical force to the conversion component 102 through the conversion bead 103b, and the conversion bead 103b is rotated and limited. The conversion component 102 will deflect the vertical force transmitted by the conversion bead 103b and convert it into a force that drives the rotating shaft 102a to rotate through the spiral structure of the spiral groove 102b. Therefore, the pumping component 103 moving in the vertical direction can push the conversion component 102 to rotate in the limiting component 101, and the conversion bead 103b is rotatably connected in the ring 103a. When the pumping component 103 moves, it can reduce a part of the direct contact with the spiral groove 102b through self-rotation, thereby making the force transmitted by the pumping component 103 more quickly and smoothly transmitted to the conversion component 102.

[0041] Among them, combined Figure 7The sampling component 104 includes a limiting shaft 104a that is slidably inserted into the rotating shaft 102a in the vertical direction, and the limiting shaft 104a extends downward through the clearance hole 101e to the outside of the abutment plate 101c, a top plate 104b fixedly arranged at the end of the limiting shaft 104a, a second clearance groove 104c opened on the top surface of the top plate 104b, and the end of the pressure component 105 abuts in the second clearance groove 104c, a sampling barrel 104d fixedly connected to the bottom of the top plate 104b, two groups of sampling grooves 104e equally divided on the sampling barrel 104d, and multiple groups of teeth 104f equally divided and surrounding the end of the sampling barrel 104d.

[0042] During use, the limiting shaft 104a is a hexagonal prism structure, which is vertically inserted under the rotating shaft 102a. Therefore, the limiting shaft 104a is limited in the circumferential direction of the rotating shaft 102a and will rotate in a circle with the rotating shaft 102a. However, the limiting shaft 104a can move in the vertical direction under the rotating shaft 102a, and the sampling tube 104d is fixedly connected to the end of the limiting shaft 104a. Therefore, when the pumping component 103 drives the conversion component 102 to rotate, the limiting shaft 104a will also synchronously drive the sampling tube 104d to rotate, and the rotating sampling tube 104d can contact the ground through the low-end teeth 104f, and cut into the soil layer in a rotating manner, thereby realizing the function of taking soil.

[0043] Further, combined with Fig.10 The sampling groove 104e is divided into a transverse groove opened horizontally on the sampling tube 104d, a card groove opened at one end of the transverse groove and extending upward, and a slide groove arranged at the other end of the transverse groove and extending downward to the end of the sampling tube 104d.

[0044] Among them, combined Figure 8 The pressure component 105 includes a pressure spring 105a sleeved on the limiting shaft 104a, and two groups of connecting rings 105b symmetrically fixedly arranged at both ends of the pressure spring 105a, and multiple groups of balls 105c are evenly arranged on the outer ends of each group of connecting rings 105b.

[0045] During use, combine Figure 2The pressure spring 105a uses its own elastic force to support the limiting component 101 and the sampling tube 104d to open to both sides. When the end of the sampling tube 104d abuts against the ground and the limiting component 101 is also erected on the ground through the supporting feet 101f on both sides, under the mutual action of the sampling tube 104d and the abutment plate 101c, the pressure spring 105a can apply a contact force to the sampling component 104 to always abut against the ground downward, because the pressure spring 105a abuts against the abutment plate 101c and the sampling component 104 through the balls 105c on the connecting rings 105b on both sides, and the balls 105c on the two groups of connecting rings 105b are respectively abutted against the first makeshift groove 101d and the second makeshift groove 104c. The balls 105c rotatably connected in the connecting ring 105b can reduce the vertical friction between the sampling tube 104d and the pressure component 105 when the circular rotation occurs, making the rotation easier.

[0046] Among them, combined Fig. 9 The sample discharging component 106 includes a tray 106a located inside the sampling barrel 104d, and the outer diameter of the tray 106a is in close contact with the inner diameter of the sampling barrel 104d, two groups of locking blocks 106b are fixedly arranged on both sides of the tray 106a, and the two groups of locking blocks 106b extend into the two groups of sampling grooves 104e respectively, and a pressure ring 106c sleeved on the outside of the sampling barrel 104d, and the outer ends of the two groups of locking blocks 106b are fixedly connected to the inner side of the pressure ring 106c, and two groups of support plates 106d are symmetrically arranged below the tray 106a, and the two groups of support plates 106d are both in close contact with the inner wall of the sampling barrel 104d.

[0047] During use, combine Fig. 9 and Fig.10, the two sets of supporting plates 106d are arc-shaped pieces of a quarter arc, which can half-surround the soil sample in two directions and stably lift the soil sample out of the sampling tube 104d. The locking blocks 106b on both sides of the sampling component 106 are normally in the card slots of the sampling groove 104e. Therefore, when the sampling tube 104d cuts into the soil layer, the soil layer will exert an upward thrust on the supporting plates 106d on both sides below the tray 106a, so the locking blocks 106b will be located in the card slots. At this time, the sampling component 106 is in a locked state. When it is necessary to take out the soil sample, by pressing the pressure ring 106c downward, the pressure ring 106c drives the locking blocks 106b to disengage from the card slots and enter the transverse groove of the sampling groove 104e, and then the pressure ring 106c is rotated along the transverse groove, and the pressure ring 106c will drive the tray 106 through the locking blocks 106b. a rotates synchronously, and the rotating tray 106a will synchronously drive the two groups of supporting plates 106d attached to the inner wall of the sampling tube 104d below to move. The moving supporting plate 106d will move along the inner wall of the sampling tube 104d, and then cut off the connection between the outside of the soil sample and the sampling tube 104d, so as to prevent the soil sample from adsorbing the inner wall of the sampling component 104 due to high humidity, resulting in the fracture or staggered layer of the discharged soil sample. The locking block 106b will eventually move into the slide groove of the sampling groove 104e along the transverse groove of the sampling groove 104e, and at this time, the pressure ring 106c will be pushed downward, and the downward moving pressure ring 106c will drive the locking block 106b to move along the slide groove, so that the tray 106a and the supporting plate 106d will lift and bring out the soil sample in the sampling tube 104d. At this time, the soil sample is in a perfect natural state.

[0048] In summary, refer to Figure 2 When using the device for soil sampling, the limiting component 101 is placed vertically on the ground so that the end of the sampling tube 104d is in contact with the ground. At this time, the limiting component 101 is fixed in the vertical direction by stepping on the supporting feet 101f with both feet, and the abutting plate 101c presses the pressure component 105 downward, and the pressure component 105 presses the sampling tube 104d downward so that the sampling tube 104d is firmly in contact with the ground. At this time, the supporting feet 101f on both sides of the limiting component 101 can ensure the verticality of the downward insertion, and the pressure component 105 can apply a stable downward pressure, thereby effectively avoiding the influence of human errors in the sampling process; Then, the pumping component 103 can be driven to rotate by pumping up and down, and the rotating conversion component 102 can drive the sampling tube 104d to rotate synchronously through the limit shaft 104a, and then cooperate with the downward pressure applied by the pressure component 105. At this time, the sampling tube 104d will cut into the ground in a rotating downward manner, thereby realizing the soil sampling operation. The operator only needs to perform a simple up and down pumping action to realize the method of driving the sampling component 104 to rotate downward and penetrate into the soil layer for sampling operation, which simplifies the operating steps in the traditional sampling work process, thereby reducing the labor intensity of the work, and greatly improving the work efficiency of the sampling work; After sampling is completed, the sample discharging component 106 can be rotated to drive the support plate 106d to cut off the connection between the soil sample and the sampling tube 104d, thereby preventing the soil sample from adsorbing the inner wall of the sampling component 104 due to high humidity, resulting in the fracture or dislocation of the discharged soil sample layers. The soil sample in the sampling tube 104d is then lifted and taken out by the tray 106a and the support plate 106d, further preventing the soil sample from breaking and dispersing, so that the soil sample is in a perfect natural state.

[0049] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A soil sampler, characterized in that: include, The sampling unit (100) comprises a limiting component (101) arranged in a vertical direction, a conversion component (102) rotatably inserted into the limiting component (101), a pumping component (103) sleeved on the conversion component (102), with both sides of the pumping component (103) extending outward to the outside of the limiting component (101), a sampling component (104) slidably inserted into the lower end of the conversion component (102) in a vertical direction, with the sampling component (104) extending downward through the bottom end of the limiting component (101) to the outside, a pressure component (105) sleeved between the upper end and the lower end of the sampling component (104) in a vertical direction, with both ends of the pressure component (105) respectively abutting against the bottom end of the limiting component (101) and the top surface of the lower end of the sampling component (104), and a sample discharging component (106) installed inside the lower end of the sampling component (104).

2. The soil sampler according to claim 1, characterized in that: The limiting component (101) comprises a limiting cylinder (101a) sleeved on the outside of the conversion component (102), limiting grooves (101b) symmetrically arranged on both sides of the limiting cylinder (101a) in the vertical direction, and both sides of the pumping component (103) pass through the limiting grooves (101b), an abutment plate (101c) fixedly connected to the end of the limiting cylinder (101a), a first clearance groove (101d) arranged on the bottom surface of the abutment plate (101c), and the top end of the pressure component (105) abuts against the first clearance groove (101d), and a clearance hole (101e) arranged at the center of the abutment plate (101c), and the sampling component (104) passes through the clearance hole (101e).

3. The soil sampler according to claim 2, characterized in that: The limiting component (101) further comprises two groups of supporting feet (101f) symmetrically arranged on both sides of the lower end of the limiting tube (101a) in a vertical direction, and the ends of the supporting feet (101f) extend laterally outward, a friction pad (101g) arranged on the bottom surface of the ends of the supporting feet (101f), a limiting belt (101h) arranged above the ends of the supporting feet (101f), and a limiting hole (101i) opened in a vertical direction on the ends of the supporting feet (101f).

4. The soil sampler according to claim 1, characterized in that: The limiting component (101) is provided with a lubrication groove (101j) that matches the structure of the conversion component (102), and both ends of the lubrication groove (101j) are spherical structures, and both ends of the conversion component (102) are respectively abutted against the spherical structures at both ends of the lubrication groove (101j).

5. The soil sampler according to claim 4, characterized in that: The conversion component (102) comprises a rotating shaft (102a) located in a lubrication groove (101j), with both ends of the rotating shaft (102a) being spherical structures, and four groups of spiral grooves (102b) evenly distributed on the outer wall of the rotating shaft (102a), and the four groups of spiral grooves (102b) are spirally wound on the outer wall of the rotating shaft (102a).

6. The soil sampler according to claim 5, characterized in that: The pumping component (103) comprises a collar (103a) sleeved on the rotating shaft (102a), four groups of conversion beads (103b) equally arranged on the inner wall of the collar (103a), and the outer ends of the four groups of conversion beads (103b) respectively extend into the four groups of spiral grooves (102b), two groups of sliders (103c) symmetrically arranged on both sides of the collar (103a), and the sliders (103c) extend into the limiting grooves (101b) to be slidably connected, and handles (103d) respectively transversely fixedly connected to the outer sides of the two groups of sliders (103c).

7. The soil sampler according to claim 4, characterized in that: The sampling component (104) comprises a limit shaft (104a) vertically slidably inserted into the rotating shaft (102a), and the limit shaft (104a) extends downward through the clearance hole (101e) to the outside of the abutment plate (101c), a top plate (104b) fixedly arranged at the end of the limit shaft (104a), a second clearance groove (104c) provided on the top surface of the top plate (104b), and the end of the pressure component (105) abuts in the second clearance groove (104c), a sampling tube (104d) fixedly connected to the bottom of the top plate (104b), two groups of sampling grooves (104e) equally divided in annular shape on the sampling tube (104d), and a plurality of groups of teeth (104f) equally divided and surrounding the end of the sampling tube (104d).

8. The soil sampler according to claim 7, characterized in that: The sampling groove (104e) is divided into a transverse groove opened transversely on the sampling tube (104d), a clamping groove opened at one end of the transverse groove and extending a portion upward, and a sliding groove arranged at the other end of the transverse groove and extending downward to the end of the sampling tube (104d).

9. The soil sampler according to claim 7, characterized in that: The pressure component (105) comprises a pressure spring (105a) sleeved on a limit shaft (104a), and two groups of connecting rings (105b) symmetrically fixedly arranged at both ends of the pressure spring (105a), and a plurality of groups of rolling balls (105c) are evenly arranged on the outer end of each group of connecting rings (105b).

10. The soil sampler according to claim 7, characterized in that: The sample discharging component (106) comprises a tray (106a) located inside the sampling barrel (104d), and the outer diameter of the tray (106a) is fitted with the inner diameter of the sampling barrel (104d); two groups of locking blocks (106b) are fixedly arranged on both sides of the tray (106a), and the two groups of locking blocks (106b) extend into the two groups of sampling grooves (104e) respectively; and a pressure ring (106c) sleeved on the outside of the sampling barrel (104d), and the outer ends of the two groups of locking blocks (106b) are fixedly connected to the inner side of the pressure ring (106c); and two groups of supporting plates (106d) are symmetrically arranged below the tray (106a), and the two groups of supporting plates (106d) are both fitted on the inner wall of the sampling barrel (104d).

Images