Layered soil sampler
By designing the sampling components, splicing components and adjustment components of the stratified soil sampler, the problem of traditional soil samplers being difficult to sample in layers is solved, precise control of sampling depth and quantity is achieved, sampling efficiency and equipment applicability are improved, and the needs of soil stratification research are met.
Patent Information
- Application Number
- CN202510982005.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-16
- Publication Date
- 2025-09-30
AI Technical Summary
Traditional soil samplers are difficult to achieve stratified sampling, and the sampling depth is difficult to accurately control, which is inefficient and easily causes sample confusion.
A layered soil sampler was designed, which adopted a sampling component with side plates and bottom plates evenly distributed in the vertical direction. Combined with splicing components and adjustment components, it achieved multi-layer splicing and precise adjustment of the bottom plate height, ensuring the precise control of sampling depth and sampling volume.
It achieves the accuracy and flexibility of stratified sampling, improves sampling efficiency and equipment versatility, and ensures high-quality samples and reliable data support for soil research.
Smart Images
Figure CN120721422A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of soil sampling, in particular to a layered soil sampler. Background Art
[0002] A soil sampler is an indispensable tool in the fields of soil science research, agricultural science, environmental monitoring, and geological exploration. It is mainly used to collect soil samples in order to analyze and study the physical, chemical, and biological properties of the soil.
[0003] However, when sampling loam soil, traditional soil samplers usually use a simple drill-type or shovel-type single sampling structure. Operators need to manually dig or rotate the drill bit to obtain soil samples. They can only obtain overall soil samples, making it difficult to achieve stratified sampling to meet the needs of soil vertical stratification research. In addition, the sampling depth is difficult to accurately control. If traditional soil samplers are used for stratified sampling, multiple operations are required, which is inefficient and easily causes sample confusion.
[0004] Therefore, those skilled in the art have proposed a layered soil sampler to solve the problems raised in the background art.
[0005] The above information disclosed in this background technology is only for enhancing understanding of the background technology of the present invention and therefore it may contain information that does not constitute the prior art that is already known to a person of ordinary skill in the art. Summary of the Invention
[0006] In order to solve the above technical problems, the present invention provides a stratified soil sampler to solve the problem that the soil sampler in the prior art is usually a simple drill-type or shovel-type single sampling structure. The operator needs to manually dig or rotate the drill bit to obtain soil samples, and can only obtain overall soil samples, making it difficult to achieve stratified sampling.
[0007] To achieve the above-mentioned purpose, the present invention provides a layered soil sampler, comprising a top plate, a handle fixedly connected to the top of the top plate, two L-shaped plates symmetrically fixed to the side edges of the top plate, a sampling assembly provided on the top plate, the sampling assembly comprising side plates symmetrically arranged at the bottom of the top plate, a bottom plate provided between the two side plates, a baffle provided between the two L-shaped plates, buckle plates fixedly connected to both sides of the baffle, an arc-shaped plate fixedly connected to the top of the baffle, and a locking member provided on the buckle plate.
[0008] Preferably, the side panels and bottom panels are provided in plurality and are evenly distributed in the vertical direction, and every two side panels at the bottom are symmetrically arranged on the bottoms of the two side panels at the top.
[0009] Preferably, the locking member includes a threaded hole formed on the gusset plate, and a bolt is threadedly connected to the threaded hole.
[0010] Preferably, the threaded holes and bolts are provided in plurality and are symmetrically arranged, and each end of the bolt abuts against the L-shaped plate.
[0011] Preferably, a splicing assembly is provided between the top plate and the two side plates at the top layer and between the upper and lower side plates. The splicing assembly includes a T-shaped groove opened at the bottom of the top plate and the side plates, and a T-shaped sliding rod is fixedly connected to the top of the side plate.
[0012] Preferably, the splicing assembly further comprises a first notch provided at the bottom of the top plate and the side plate, a first spring being provided in the first notch, and both the top plate and the side plate being rotatably connected to a tilting rod, and a protrusion being fixedly connected to the tilting rod.
[0013] Preferably, the T-shaped slide bar is slidably connected in the T-shaped slot, the length of the T-shaped slide bar is smaller than the length of the T-shaped slot, the two ends of the first spring are fixedly connected in the first slot and on the tilting rod respectively, and the end of the protrusion abuts on the T-shaped slide bar.
[0014] Preferably, an adjustment assembly is provided between every two side panels, and the adjustment assembly includes a groove provided on the inner side of the side panel, and a tooth groove is provided in the groove.
[0015] Preferably, the adjustment assembly further includes a second notch opened at both ends of the bottom plate, the second notch is provided with a second spring, a push rod is provided in the second notch, and the end of the push rod is fixedly connected to a clamping block.
[0016] Preferably, the two ends of the second spring are fixedly connected in the second slot and on the push rod respectively, the clamping block is provided with an inclined surface, the clamping block is clamped in the tooth groove, and the tooth groove, second slot, second spring, push rod and clamping block are each provided with two and are symmetrically arranged.
[0017] Compared with the prior art, the present invention has the following beneficial effects:
[0018] 1. The present invention adopts a layered design with multiple side panels and a bottom panel evenly distributed in the vertical direction by setting up a sampling component, which can accurately obtain soil samples at various depths. Each layer structure is independent and evenly distributed, ensuring that the sampling depth and sampling volume are precisely controllable, providing high-quality samples and reliable data support for soil research, and meeting the needs of soil stratification research. Secondly, the sampling component has a sharp contact surface, which is convenient for cutting into the soil, reducing sampling resistance and improving sampling efficiency.
[0019] 2. The present invention provides a splicing assembly, so that the soil sampler can be spliced in multiple layers according to actual sampling requirements, thereby selecting the required number of layers. This flexible layer adjustment function enables the soil sampler to adapt to different sampling depth requirements, thereby improving the versatility and applicability of the equipment. In addition, the T-shaped slide bar fits with the T-shaped slot, and the first spring thrust cooperates with the tilting rod and the protrusion to lock, ensuring that the structure is firm and the sample is stable during sampling.
[0020] 3. The present invention pushes or presses the base plate, and with the help of the inclined surface of the card block and the thrust of the second spring, the card block is engaged in different positions of the tooth groove, thereby accurately adjusting the base plate height to meet the needs of soil sampling at different depths, greatly improving the flexibility and accuracy of sampling, and can collect stratified soil within different centimeters according to needs. Secondly, this adjustment method is easy to operate and does not require complex tools or tedious steps. The operator can quickly complete the adjustment of the base plate position, saving sampling time and improving work efficiency.
[0021] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is a schematic diagram of the overall structure of a layered soil sampler according to an embodiment of the present invention;
[0023] Figure 2 This is a schematic diagram of the structural decomposition of a locking component of a layered soil sampler according to an embodiment of the present invention;
[0024] Figure 3 is a cross-sectional view of a side view of a layered soil sampler according to an embodiment of the present invention;
[0025] Figure 4 for Figure 3 A schematic diagram of the structure enlarged in the middle;
[0026] Figure 5 This is a schematic diagram of the exploded structure of a layered soil sampler splicing assembly according to an embodiment of the present invention;
[0027] Figure 6 is a cross-sectional view of an adjustment assembly of a layered soil sampler according to an embodiment of the present invention;
[0028] Figure 7 Schematic diagram of the structure of a layered soil sampler adjustment assembly in an embodiment of the present invention.
[0029] In the figure: 1. Top plate; 2. Handle; 3. L-shaped plate; 4. Sampling assembly; 41. Side plate; 42. Bottom plate; 43. Baffle; 431. Buckle plate; 432. Arc plate; 44. Locking member; 441. Threaded hole; 442. Bolt; 5. Splicing assembly; 51. T-slot; 52. T-shaped slide bar; 53. First notch; 54. First spring; 55. Crank rod; 56. Bump; 6. Adjustment assembly; 61. Groove; 62. Tooth groove; 63. Second notch; 64. Second spring; 65. Push rod; 66. Block. DETAILED DESCRIPTION
[0030] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. It should be noted that the drawings are schematic and not to scale. For the sake of clarity and convenience, the relative sizes and proportions of the parts shown in the drawings are exaggerated or reduced in size, and any sizes are only illustrative and not restrictive.
[0031] Example 1:
[0032] See also Figure 1 - Figure 7As shown, a layered soil sampler includes a top plate 1, a handle 2 is fixedly connected to the top of the top plate 1, two L-shaped plates 3 are symmetrically fixed to the side edges of the top plate 1, a sampling assembly 4 is provided on the top plate 1, and the sampling assembly 4 includes side plates 41 symmetrically arranged at the bottom of the top plate 1, a bottom plate 42 is arranged between the two side plates 41, a baffle 43 is arranged between the two L-shaped plates 3, both sides of the baffle 43 are fixedly connected with a buckle plate 431, the top of the baffle 43 is fixedly connected with an arc plate 432, and a locking member 44 is provided on the buckle plate 431. The top plate 1 is the supporting platform of the entire soil sampler, which plays the role of carrying and connecting other components. It provides an installation basis for the sampling assembly 4, the splicing assembly 5, etc., to ensure stable connection and coordinated work between the various components. The handle 2 is the main part for the operator to hold the soil sampler, which is convenient for the operator to hold the soil sampler stably and perform sampling operations. Through the handle 2, the operator can easily insert the soil sampler into the soil and After completion, it is pulled out, which improves the convenience and efficiency of sampling work. The L-shaped plates 3 are symmetrically fixed to the top sides of the top plate 1, playing a supporting and positioning role. They provide installation positions for the baffles 43 and the locking members 44, ensuring that the baffles 43 and the locking members 44 can be stably installed on the soil sampler and maintain their functions during the sampling process. The structural design of the L-shaped plate 3 enables it to withstand a certain lateral force, thereby enhancing the overall stability of the soil sampler. The sampling assembly 4 is used to collect soil samples. It includes side plates 41, a bottom plate 42, baffles 43 and locking members 44. There are multiple side plates 41 and bottom plates 42 and they are evenly distributed in the vertical direction. Every two side plates 41 at the bottom are symmetrically arranged on the bottom of the two side plates 41 at the top. This structural design enables the soil sampler to collect soil samples in layers, and the sampling depth and sampling volume of each layer can be precisely controlled. The locking member 44 is used to fix the baffle 43 on the two L-shaped plates 3.
[0033] Specifically, a plurality of side panels 41 and bottom panels 42 are provided and are evenly distributed in the vertical direction, and every two side panels 41 at the bottom are symmetrically arranged on the bottoms of the two side panels 41 at the top.
[0034] Furthermore, the locking member 44 includes a threaded hole 441 opened on the buckle plate 431, and a bolt 442 is connected to the inner thread of the threaded hole 441. The threaded hole 441 is used to receive the bolt 442. By tightening the bolt 442, the baffle 43 can be fixed between the two L-shaped plates 3.
[0035] Furthermore, there are multiple threaded holes 441 and bolts 442 , which are symmetrically arranged, and the end of each bolt 442 abuts against the L-shaped plate 3 .
[0036] As can be seen from the above, first dig a soil profile, and fix the baffle 43 between the two L-shaped plates 3 through the threaded holes 441 and bolts 442 on the buckle plate 431. At this time, the side plates 41 and the bottom plate 42 of the sampling assembly 4 have been installed at the bottom of the top plate 1 to form a complete sampling unit. The operator holds the handle 2 and inserts the sampling assembly 4 of the soil sampler into the soil, and then knocks it with a rubber hammer to smash the instrument into the soil. Since the contact surfaces of the side plates 41 and the bottom plate 42 with the soil are sharp, they can smoothly cut into the soil to collect soil samples at different depths. The sampling depth and sampling volume of each layer can be adjusted by the structural design of the side plates 41 and the bottom plate 42. Precise control is carried out. After the sampling is completed, the operator pulls the soil sampler out of the soil through the handle 2. Due to the action of the locking component 44, the sampling component 4 remains stable during the sampling process, and the collected soil samples will not loosen or fall off. The operator can collect and analyze the collected samples in layers. By setting up the sampling component 4, the side panels 41 and the bottom panel 42 are provided with multiple and evenly distributed layered designs in the vertical direction, soil samples at each depth can be accurately obtained. Each layer structure is independent and evenly distributed, ensuring that the sampling depth and sampling volume are accurately controllable, providing high-quality samples and reliable data support for soil research, and meeting the needs of soil stratification research.
[0037] Example 2:
[0038] See also Figure 3 - Figure 5 As shown, this embodiment is basically the same as the previous embodiment, except that a splicing assembly 5 is provided between the top plate 1 and the two side plates 41 at the top layer, as well as between the upper and lower side plates 41. The splicing assembly 5 includes a T-shaped slot 51 opened at the bottom of the top plate 1 and the side plates 41. A T-shaped slide bar 52 is fixedly connected to the top of the side plate 41. The T-shaped slot 51 is used to provide a sliding and positioning track for the T-shaped slide bar 52. When it is necessary to splice the side plates 41 of different layers, the T-shaped slide bar 52 is inserted into the T-shaped slot 51 to ensure that the side plates 41 can be stably connected together. The design of the T-shaped slot 51 not only ensures the precise alignment between the side plates 41, but also provides structural stability for the entire earth extractor. The soil sampler can realize flexible splicing of multiple layers of side panels 41 through the cooperation of the T-slot 51 and the T-slide 52 to meet the needs of different sampling depths. The T-slide 52 is fixedly connected to the top of the side panel 41 and is used to cooperate with the T-slot 51 to realize the connection and positioning between the side panels 41. The shape design of the T-slide 52 enables it to slide stably in the T-slot 51 and prevent the side panel 41 from lateral displacement during the splicing process. When the T-slide 52 is inserted into the T-slot 51, the T-slide 52 is firmly fixed in the T-slot 51 through the thrust of the first spring 54 and the limiting action of the protrusion 56 on the tilting rod 55, ensuring a tight connection between the side panels 41.
[0039] Specifically, the splicing assembly 5 also includes a first notch 53 opened at the bottom of the top plate 1 and the side plate 41, and a first spring 54 is provided in the first notch 53. The top plate 1 and the side plate 41 are rotatably connected to a tilting rod 55, and a protrusion 56 is fixedly connected to the tilting rod 55. The first notch 53 is used to install the first spring 54, provide an installation space for the first spring 54, and ensure that the first spring 54 can work normally in the notch. The first spring 54 is installed in the first notch 53 to provide thrust for the tilting rod 55. When the T-shaped slide bar 52 is inserted into the T-shaped slot 51, the first spring 54 is released. The excessive thrust causes the protrusion 56 on the tilting rod 55 to abut against the T-shaped slide bar 52, thereby preventing the T-shaped slide bar 52 from escaping from the T-shaped slot 51. The tilting rod 55 drives the protrusion 56 to abut against the T-shaped slide bar 52 through the thrust of the first spring 54, so that the operator can control the position of the protrusion 56 through simple operation, thereby achieving the fixing and release of the T-shaped slide bar 52. The protrusion 56 abuts against the T-shaped slide bar 52, preventing the T-shaped slide bar 52 from escaping from the T-shaped slot 51, so that the soil extractor can achieve a firm connection of the side plate 41 during the splicing process, thereby ensuring the structural stability of the entire soil extractor.
[0040] Furthermore, the T-shaped slide bar 52 is slidably connected in the T-shaped slot 51 , the length of the T-shaped slide bar 52 is smaller than the length of the T-shaped slot 51 , the two ends of the first spring 54 are respectively fixedly connected in the first slot 53 and on the tilting rod 55 , and the end of the protrusion 56 abuts against the T-shaped slide bar 52 .
[0041] As can be seen from the above, first align the T-shaped slide bars 52 provided on the top of the two side panels 41 on the top layer with the T-shaped slots 51 on the top plate 1, and insert the T-shaped slide bars 52 into the T-shaped slots 51. At this time, the first spring 54 in the first notch 53 generates a thrust, so that the tilting rod 55 connected to the top plate 1 rotates and drives the protrusion 56 to abut against the T-shaped slide bar 52, preventing the T-shaped slide bar 52 from separating from the T-shaped slots 51. In this way, the two side panels 41 on the top layer are stably spliced on the top plate 1. If further layers are needed, the two side panels of the next layer can be connected to the top plate 1. The T-shaped slide bar 52 of 41 is inserted into the T-shaped slot 51 at the bottom of the upper side plate 41, and the above splicing operation is repeated. By setting the splicing component 5, the soil sampler can be spliced in multiple layers according to actual sampling requirements, so as to select the number of layers required. This flexible layer adjustment function enables the soil sampler to adapt to different sampling depth requirements, improves the versatility and applicability of the equipment, and through the T-shaped slide bar 52 and the T-shaped slot 51, the thrust of the first spring 54 cooperates with the tilting rod 55 and the protrusion 56 to lock, ensuring that the structure is firm and the sample is stable during sampling.
[0042] Example 3:
[0043] See also Figure 6 - Figure 7As shown, this embodiment is basically the same as the previous embodiment, with the difference that an adjustment assembly 6 is provided between every two side panels 41, and the adjustment assembly 6 includes a groove 61 opened on the inner side of the side panel 41, and a tooth groove 62 is provided in the groove 61. The groove 61 is used to accommodate the bottom plate 42 and other components of the adjustment assembly 6, providing space for the bottom plate 42 to move and ensuring that the bottom plate 42 can move smoothly during the adjustment process. The tooth groove 62 is used to cooperate with the clamping block 66 to fix the position of the bottom plate 42. The design of the tooth groove 62 enables the clamping block 66 to be clamped at different positions, thereby realizing precise adjustment of the bottom plate 42.
[0044] Specifically, the adjustment component 6 also includes a second notch 63 opened at both ends of the bottom plate 42, the second notch 63 is provided with a second spring 64, a push rod 65 is provided in the second notch 63, and the end of the push rod 65 is fixedly connected to a clamping block 66. The second notch 63 is used to install the second spring 64 and the push rod 65, providing installation space for the second spring 64 and the push rod 65 and ensuring that they can work normally in the notch. The second spring 64 provides thrust for the push rod 65. When the bottom plate 42 is pushed or pressed, the second spring 64 uses the thrust to make the push rod 65 drive the clamping block 66 to be clamped in the tooth groove 62, thereby realizing the position of the bottom plate 42. Fixed, the push rod 65 is arranged in the second slot 63, and the push rod 65 drives the block 66 to be clamped in the tooth groove 62 through the thrust of the second spring 64. The design of the push rod 65 allows the operator to control the position of the block 66 through simple operation, thereby achieving the fixation and adjustment of the position of the base plate 42. The block 66 is clamped in the tooth groove 62 to achieve the fixation of the position of the base plate 42, so that the soil sampler can achieve accurate fixation of the base plate 42 during the adjustment process, ensuring the structural stability of the entire soil sampler. Through the action of the block 66, the soil sampler can achieve accurate adjustment of the position of the base plate 42 to meet the needs of different sampling depths.
[0045] Furthermore, the two ends of the second spring 64 are fixedly connected to the second slot 63 and the push rod 65 respectively, and an inclined surface is provided on the block 66, which is engaged in the tooth groove 62. The tooth groove 62, the second slot 63, the second spring 64, the push rod 65 and the block 66 are all provided with two and are symmetrically arranged.
[0046] As can be seen from the above, when the position of the bottom plate 42 needs to be adjusted to collect soil samples at different depths, the bottom plate 42 is first pressed or pushed. Under the action of the inclined surface of the tooth groove 62, the push rods 65 at both ends of the bottom plate 42 are moved into the second notch 63 through the clamping block 66, and the second spring 64 is tightened. During the movement of the push rod 65, the inclined surface of the clamping block 66 acts as a guide, allowing the bottom plate 42 to move smoothly in the groove 61 on the inner side of the side plate 41. When the bottom plate 42 moves to the desired position, under the thrust of the second spring 64, the clamping block 66 is clamped on the corresponding tooth in the tooth groove 62, thereby fixing the bottom plate 42 in the adjusted position, thereby accurately adjusting the height of the bottom plate 42 to meet the needs of soil sampling at different depths, greatly improving the flexibility and accuracy of sampling, and can collect soil layers within different centimeters according to needs. Secondly, this adjustment method is easy to operate and does not require complex tools or tedious steps. The operator can quickly complete the adjustment of the position of the bottom plate 42, saving sampling time and improving work efficiency.
[0047] All standard parts used in the present invention are commercially available, and special-shaped parts can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art. In addition, the circuit connections adopt conventional connection methods in the prior art and will not be described in detail here. Any matters not described in detail in this specification belong to the prior art known to professionals skilled in the art.
[0048] In the drawings of the embodiments disclosed in the present invention, only the structures involved in the embodiments disclosed in the present invention are involved. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.
[0049] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A layered soil sampler, characterized in that: The invention comprises a top plate (1), wherein a handle (2) is fixedly connected to the top of the top plate (1), two L-shaped plates (3) are symmetrically fixedly connected to the sides of the top plate (1), a sampling assembly (4) is arranged on the top plate (1), and the sampling assembly (4) comprises side plates (41) symmetrically arranged at the bottom of the top plate (1), a bottom plate (42) is arranged between the two side plates (41), a baffle (43) is arranged between the two L-shaped plates (3), both sides of the baffle (43) are fixedly connected to buckle plates (431), the top of the baffle (43) is fixedly connected to an arc-shaped plate (432), and a locking member (44) is arranged on the buckle plate (431).
2. A layered soil sampler according to claim 1, characterized in that: The side panels (41) and the bottom panel (42) are provided in plurality and are evenly distributed in the vertical direction, and every two side panels (41) at the bottom are symmetrically arranged on the bottoms of the two side panels (41) at the top.
3. A layered soil sampler according to claim 2, characterized in that: The locking member (44) comprises a threaded hole (441) formed on the pinch plate (431), wherein a bolt (442) is internally threadedly connected to the threaded hole (441).
4. A layered soil sampler according to claim 3, characterized in that: The threaded holes (441) and the bolts (442) are provided in plurality and are symmetrically arranged, and the end of each bolt (442) abuts against the L-shaped plate (3).
5. The layered soil sampler according to claim 1, characterized in that: A splicing assembly (5) is provided between the top plate (1) and the two side plates (41) at the top layer, and between the upper and lower side plates (41). The splicing assembly (5) includes a T-shaped groove (51) provided at the bottom of the top plate (1) and the side plates (41). A T-shaped sliding rod (52) is fixedly connected to the top of the side plates (41).
6. The layered soil sampler according to claim 5, characterized in that: The splicing assembly (5) further comprises a first notch (53) provided at the bottom of the top plate (1) and the side plate (41), a first spring (54) being provided in the first notch (53), a tilting rod (55) being rotatably connected to both the top plate (1) and the side plate (41), and a protrusion (56) being fixedly connected to the tilting rod (55).
7. The layered soil sampler according to claim 6, characterized in that: The T-shaped slide bar (52) is slidably connected in the T-shaped slot (51), and the length of the T-shaped slide bar (52) is smaller than the length of the T-shaped slot (51). The two ends of the first spring (54) are respectively fixedly connected in the first notch (53) and on the tilting rod (55), and the end of the protrusion (56) abuts on the T-shaped slide bar (52).
8. The layered soil sampler according to claim 1, characterized in that: An adjustment component (6) is provided between every two side plates (41), and the adjustment component (6) comprises a groove (61) provided on the inner side of the side plate (41), and a tooth groove (62) is provided in the groove (61).
9. The layered soil sampler according to claim 8, characterized in that: The adjustment assembly (6) further includes a second notch (63) provided at both ends of the bottom plate (42), the second notch (63) being provided with a second spring (64), a push rod (65) being provided in the second notch (63), and a clamping block (66) being fixedly connected to the end of the push rod (65).
10. The layered soil sampler according to claim 9, characterized in that: The two ends of the second spring (64) are respectively fixedly connected in the second notch (63) and on the push rod (65); the clamping block (66) is provided with an inclined surface; the clamping block (66) is clamped in the tooth groove (62); the tooth groove (62), the second notch (63), the second spring (64), the push rod (65) and the clamping block (66) are all provided with two and are symmetrically arranged.