Underforest soil sampler

Abstract

The utility model relates to the technical field of soil collection, and discloses an under-forest soil sampler which comprises a drill rod, the drill bit comprises a main body, the main body is arranged on the drill rod, and an inner net sleeve used for collecting soil samples is movably arranged in the main body; and a push rod; the push rod movably penetrates through the drill rod, a locking structure used for locking the push rod is arranged between the push rod and the drill rod, the push rod is detachably connected with the inner net sleeve, and the push rod is pushed into the main body to push out the inner net sleeve; a hollow groove for sampling a soil sample is formed in the inner net sleeve. The soil sampling device has the technical effects of ensuring the sampling integrity of a soil sample and further facilitating layered detection of the soil sample.

Description

Technical Field

[0001] The utility model belongs to the technical field of soil sampling, and particularly relates to an understory soil sampler. Background Art

[0002] Soil sampling is an important step in the fields of environmental monitoring, agricultural research, geological survey, etc. The purpose is to obtain representative soil samples for subsequent analysis. In the study of the coconut grove grazing mode, in order to reveal the mediating role of soil in the coconut grove grazing system, it is necessary to monitor the physical and chemical properties of the soil and the soil microbial diversity. At present, soil samplers are mainly used to collect soil samples.

[0003] The soil sampler includes a drill rod and a drill bit. A soil unloading push plate for pushing the soil sample out of the drill bit is movably arranged in the drill rod. Before sampling, a suitable sampling point is selected. The tester inserts the drill bit into the soil layer, drills a soil sample at a certain depth, then pulls out the drill bit, and pushes the soil unloading push plate to push out the soil sample, and the soil sample collection is completed.

[0004] However, coconut grove soil is mostly stratified due to natural deposition, that is, the surface layer is sandy loam and gravel soil, with a high gravel content and loose soil, and the deep layer is mainly clay. During sampling, when the soil unloading push plate pushes the soil sample away from the drill bit, the surface layer of the soil sample is loose and prone to collapse, and it is difficult for the soil sampler to ensure the integrity of the soil sample during stratified sampling, which affects the measurement results. Summary of the Invention

[0005] In order to solve the deficiencies of the above-mentioned prior art, the utility model provides an understory soil sampler. The drill bit drills the soil sample and collects the soil sample in the inner mesh sleeve. The push rod pushes the inner mesh sleeve away from the main body, and the tester can take out the inner mesh sleeve and the soil sample as a whole, which is beneficial to ensure the integrity of the soil sample and conduct stratified detection on the soil sample.

[0006] The technical effects to be achieved by the utility model are realized through the following technical aspects:

[0007] The utility model provides an understory soil sampler, which includes a drill rod; a drill bit including a main body, the main body is arranged on the drill rod, and an inner mesh sleeve for collecting soil samples is movably arranged in the main body; and a push rod; movably passing through the drill rod, a locking structure for locking the push rod is arranged between the push rod and the drill rod, the push rod is detachably connected to the inner mesh sleeve, and the push rod pushes out the inner mesh sleeve inside the main body; the inner mesh sleeve is provided with a hollow groove for soil sample sampling.

[0008] In some implementations, the locking structure includes an outer joint disposed on the drill pipe, the push rod passing through the outer joint, and a plurality of abutting pieces for clamping the push rod provided on the outer joint; and a locking sleeve sleeved on the outside of the outer joint and detachably connected to the outer joint. The locking sleeve includes an abutting end that presses the abutting pieces onto the push rod, and the plurality of abutting pieces clamp to lock the push rod.

[0009] In some implementations, the push rod includes a rod body and an anti-disengagement portion. Among them, the rod body is detachably connected to the inner wire sleeve, and the anti-disengagement portion is located at one end of the rod body away from the inner wire sleeve.

[0010] In some implementations, an inner joint is provided on the inner wire sleeve, and the push rod includes an inner connecting end that passes through the inner joint and is threadedly connected to the inner joint.

[0011] In some implementations, a rubber ring is provided on the inner wire sleeve, and the rubber ring is located between the inner wire sleeve and the main body to prevent soil from entering between the inner wire sleeve and the main body.

[0012] In some implementations, a handle is provided on the drill pipe, and a limiting structure for assisting in fixing the push rod is provided between the handle and the push rod.

[0013] In some implementations, the handle is in communication with the drill pipe. The limiting structure includes a limiting rod that passes through the handle and is detachably connected to the handle; and a limiting groove opened on the outer wall of the push rod. The limiting rod penetrates into the limiting groove, and the limiting rod and the limiting groove cooperate to limit the rotation of the push rod.

[0014] In some implementations, a footrest is provided on the drill pipe.

[0015] In some implementations, a cutting ring for breaking soil is provided on the drill bit on the main body, and the cutting ring is detachably connected to the main body.

[0016] In summary, the present utility model has at least the following advantages:

[0017] For the understory soil sampler provided by the present utility model, when collecting soil samples, the drill pipe is pushed to vertically drill the soil samples with the drill bit, and as the main body drills into soil layers at different depths, the inner wire sleeve collects the soil samples. After the drill bit reaches a specific drilling depth, the drill bit is pulled out, the locking of the push rod by the locking structure is released, the push rod is pushed, the inner wire sleeve is pushed out of the main body, the inner wire sleeve and the push rod are separated, and the tester can take out the inner wire sleeve and the complete soil sample for the layered determination of the soil sample.

[0018] Compared with the sampling method of pushing out soil samples by the soil unloading push plate in traditional soil samplers, the inner net sleeve can ensure the integrity of soil samples, reduce the possibility of mixing of soil layers at different depths. At the same time, the inner net sleeve wraps the soil samples, enabling the soil samples to be transported away from the sampling point in a complete state, which is conducive to subsequent detection operations of soil samples. Description of the Drawings

[0019] Figure 1 Side view of a forest understory soil sampler according to a specific embodiment of the present invention.

[0020] Figure 2 is Figure 1 Schematic cross-sectional view of the overall structure along the A-A plane.

[0021] Figure 3 is Figure 2 Enlarged schematic view at B in

[0022] Figure 4 Schematic structural view of the locking structure according to a specific embodiment of the present invention.

[0023] Figure 5 Schematic structural view of the outer joint according to a specific embodiment of the present invention.

[0024] Figure 6 is Figure 1 Partial cross-sectional view of the locking structure in

[0025] Figure 7 Overall structural schematic view of a forest understory soil sampler according to a specific embodiment of the present invention.

[0026] Figure 8 Schematic structural view of the limiting structure according to a specific embodiment of the present invention.

[0027] Figure 9 Partial structural schematic view of the inner net sleeve according to a specific embodiment of the present invention.

[0028] Reference numerals in the figures:

[0029] 1, drill pipe;

[0030] 2, drill bit; 21, main body; 22, inner net sleeve; 221, inner joint; 222, hollow groove; 23, rubber ring; 24, cutting edge ring;

[0031] 3, push rod; 31, locking structure; 311, outer joint; 312, abutting piece; 313, locking sleeve; 3131, abutting end; 32, rod body; 33, anti-disengagement part; 34, inner connection end;

[0032] 4, handle; 41, limiting structure; 411, limiting rod; 412, limiting groove;

[0033] 5. Footrest Detailed implementation mode

[0034] To make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. The described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments.

[0035] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the present utility model to be protected, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model.

[0036] Example 1:

[0037] Please refer to Figures 1 - 3 , the understory soil sampler of the present utility model can collect loose soil with a relatively large gravel content such as coconut grove soil, which is beneficial to improving the integrity of soil sample collection and can be applicable to soil layer sampling.

[0038] Please refer to Figure 1 and Figure 2 , the understory soil sampler of the present utility model includes a drill rod 1. Specifically, the length of the drill rod 1 can be adjusted according to actual needs. One end of the drill rod 1 is provided with a drill bit 2 for drilling soil samples. The drill bit 2 includes a main body 21. The main body 21 is arranged on the drill rod 1 and is connected to the drill rod 1. An inner mesh sleeve 22 for collecting soil samples is movably arranged in the main body 21. Specifically, the inner mesh sleeve 22 can be a cylindrical mesh sleeve, and the mesh number of the inner mesh sleeve 22 can be adjusted according to the soil particle size, which is beneficial to sampling loose soil such as sandy loam and gravel soil into the inner mesh sleeve 22. At the same time, the inner mesh sleeve 22 is lightweight, and it is convenient to carry when the soil sample is collected into the inner mesh sleeve 22.

[0039] A push rod 3 is movably inserted into the drill rod 1. A locking structure 31 for locking the push rod 3 is arranged between the push rod 3 and the drill rod 1. After the push rod 3 slides along the drill rod 1, it is locked by the locking structure 31. At the same time, the push rod 3 is detachably connected to the inner mesh sleeve 22. The push rod 3 slides in the drill rod 1 and drives the inner mesh sleeve 22 to move. The inner mesh sleeve 22 is pushed out of the main body 21 or pulled into the main body 21. When the push rod 3 pushes the inner mesh sleeve 22 away from the main body 21, it is convenient to disassemble the inner mesh sleeve 22 and the push rod 3.

[0040] Please refer to Figure 2 and Figure 3, in a preferred embodiment, an inner joint 221 is provided on the inner sheath 22. Specifically, the inner joint 221 can communicate with the inner sheath 22. During sample detection, it is beneficial for layer-by-layer detection of the soil samples collected in the inner sheath 22. The push rod 3 includes an inner connection end 34. The inner connection end 34 passes through the inner joint 221 and is threadedly connected to the inner joint 221. When disassembling the inner sheath 22 and the push rod 3, rotate the inner sheath 22, the inner connection end 34 is separated from the inner joint 221, and the inner sheath 22 is taken out from the main body 21, thus realizing the removal of the inner sheath 22.

[0041] In some specific embodiments, a rubber ring 23 is provided on the inner sheath 22. The rubber ring 23 is preferably but not limited to a rubber ring 23. The rubber ring 23 is located between the inner sheath 22 and the main body 21. When the drill bit 2 drills soil samples, some soil is likely to enter between the inner sheath 22 and the main body 21, which is not convenient for taking out the inner sheath 22 and cleaning the main body 21. The rubber ring 23 can prevent soil from entering between the inner sheath 22 and the main body 21, so that the drilled soil samples are collected in the inner sheath 22.

[0042] Before collecting soil samples, the tester selects appropriate sampling points by the random method or the grid method. After cleaning the surface debris, insert the drill bit 2 into the soil. The drill bit 2 drills soil samples through the main body 21, and the soil samples drilled by the main body 21 are collected into the inner sheath 22. After the main body 21 drills to a certain depth, pull out the drill bit 2, the locking structure 31 unlocks the push rod 3, and the inner sheath 22 is pushed through the push rod 3 so that the inner sheath 22 is pushed out of the main body 21. Then disassemble the inner sheath 22 and the push rod 3, and the inner sheath 22 contains complete soil samples. The tester can observe the layering situation according to the profile of the soil samples and measure indicators such as temperature, moisture, pH, nutrients, enzymes related to soil carbon, nitrogen, and phosphorus cycling, and the dynamic changes of soil microbial diversity in each soil layer of the soil samples, with convenient operation. When unloading soil samples with traditional soil samplers, the sandy loam and gravel in the surface layer and the clay in the deep layer of the soil samples are likely to be mixed, while the inner sleeve net of the present invention plays a role in shaping the soil samples, thus solving the problem that the integrity of the soil samples is easily damaged and facilitating layer-by-layer detection of the soil samples.

[0043] Embodiment 2:

[0044] The difference between this embodiment and Embodiment 1 is that this embodiment further optimizes the structure of the locking structure 31 of the present invention. Please refer to Figures 4 - 6 .

[0045] Please refer to Figure 4 and Figure 5, the locking structure 31 of this embodiment includes an outer joint 311. The outer joint 311 is provided on the drill pipe 1. The push rod 3 is inserted into the outer joint 311. A plurality of abutting pieces 312 for clamping the push rod 3 are provided on the outer joint 311. In some specific embodiments, the outer joint 311 and the abutting pieces 312 are integrally formed. Two adjacent abutting pieces 312 are spaced apart to provide space for the deformation of the abutting pieces 312.

[0046] Please refer to Figures 4 - 6 , a locking sleeve 313 is sleeved outside the outer joint 311. The locking sleeve 313 is detachably connected to the outer joint 311. Among them, the locking sleeve 313 includes an abutting end 3131. The abutting end 3131 presses the abutting piece 312 onto the push rod 3. A plurality of abutting pieces 312 are clamped to lock the push rod 3. Specifically, the inner wall of the abutting end 3131 is inclined so that the inner wall of the abutting end 3131 fits the outer wall of the abutting piece 312. When the locking sleeve 313 is locked to the outer joint 311, the abutting end 3131 presses the abutting piece 312, and the abutting piece 312 abuts against the push rod 3. A plurality of abutting pieces 312 converge towards the axis of the push rod 3 to clamp the push rod 3, and the push rod 3 is fixed. In some specific embodiments, the locking sleeve 313 can be threadedly connected to the outer joint 311. By rotating the locking sleeve 313, the abutting end 3131 approaches the abutting piece 312 to tightly press the abutting piece 312, or moves away from the abutting piece 312, and the locking structure 31 locks or unlocks the push rod 3.

[0047] Please refer to Figure 4 , in a preferred embodiment, the push rod 3 includes a rod body 32 and an anti - detachment part 33. Among them, the rod body 32 is inserted into the outer joint 311 and the drill pipe 1, and is detachably connected to the inner joint 221 of the inner wire mesh sleeve 22. The anti - detachment part 33 is located at one end of the rod body 32 away from the inner wire mesh sleeve 22. Specifically, the anti - detachment part 33 can be a handle. The anti - detachment part 33 can prevent the push rod 3 from slipping out of the drill pipe 1 when pushing the inner wire mesh sleeve 22 away from the main body 21, improving the convenience of use.

[0048] The locking structure 31 can lock the push rod 3 at any position, with a simple structure and convenient use.

[0049] Embodiment 3:

[0050] The difference between this embodiment and Embodiment 1 is that in this embodiment, further structural optimization is carried out on the drill pipe 1 and the drill bit 2 of the present invention. Please refer to Figures 7 - 9 .

[0051] Please refer to Figure 7 , a handle 4 is provided on the drill pipe 1 of this embodiment. By grasping the handle 4, an action can be applied to the drill pipe 1, and then the drill bit 2 can be pushed to drill the soil sample. Specifically, an anti - slip pad can be provided on the handle 4 to facilitate grasping the handle 4. A limiting structure 41 for assisting in fixing the push rod 3 is provided between the handle 4 and the push rod 3.

[0052] Please refer to Figure 8 and Figure 9 In some specific embodiments, the handle 4 is in communication with the drill pipe 1. The limiting structure 41 includes a limiting rod 411. The limiting rod 411 is inserted into the handle 4 and extends to the outside of the handle 4. Specifically, a stop head may be provided at one end of the limiting rod 411 away from the drill pipe 1 to limit the length of the limiting rod 411 inserted into the handle 4. The limiting rod 411 is detachably connected to the handle 4. Preferably, the outer wall of the limiting rod 411 can be threadedly connected to the inner wall of the handle 4 to lock the limiting rod 411. A limiting groove 412 is formed on the outer wall of the push rod 3. Specifically, the limiting groove 412 can be a rectangular groove opened along the length direction of the push rod 3. It can be understood that this is not the only limitation on the shape of the limiting groove 412. In some other specific embodiments, the limiting groove 412 can be a cylindrical groove adapted to the limiting rod 411.

[0053] When the limiting rod 411 extends into the drill pipe 1 and into the limiting groove 412, the limiting rod 411 and the limiting groove 412 cooperate to limit the rotation of the push rod 3. When the inner mesh sleeve 22 is rotated to disassemble the inner mesh sleeve 22 and the push rod 3, the limiting rod 411 extends into the limiting groove 412, which can limit the push rod 3 from rotating around the axis direction. In the state where the locking structure 31 locks the push rod 3, the limiting structure 41 plays an auxiliary fixing role to further ensure the stability of the locking of the push rod 3 and the inner mesh sleeve 22 can be smoothly removed from the push rod 3.

[0054] Please refer to Figure 7 In a preferred embodiment, a footrest 5 is provided on the drill pipe 1. By stepping on the footrest 5, the acting force acts on the drill pipe 1, which can push the drill pipe 1 and the drill bit 2 to drill deeper, saving time and effort.

[0055] Please refer to Figure 9 In some specific embodiments, a hollowed-out groove 222 for soil sample sampling is formed on the inner mesh sleeve 22. Specifically, the hollowed-out groove 222 is a U-shaped groove hole, which is beneficial for the detection personnel to sample and analyze each soil layer of the soil sample without digging the soil layer by layer.

[0056] Please refer to Figure 7 In addition, a cutting ring 24 for breaking soil is provided on the drill bit 2 on the main body 21. Specifically, the cutting ring 24 is sleeved on the outside of the main body 21 and is detachably connected to the main body 21. Preferably, the cutting ring 24 can be threadedly connected to the main body 21. Among them, a beveled tip, a sawtooth or a ring knife can be provided on the cutting ring 24. The disassembly and assembly of the cutting ring 24 and the main body 21 are beneficial for replacing the corresponding cutting ring 24 to adapt to different soil hardnesses.

[0057] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0058] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, terms such as "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0059] In addition, terms such as "horizontal", "vertical", "hanging", etc. do not mean that the components are required to be absolutely horizontal or hanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but may be slightly inclined.

[0060] In the present utility model, unless otherwise clearly specified and defined, the first feature being above or below the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being above, over and on the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being below, under and beneath the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the horizontal height of the first feature is lower than that of the second feature.

[0061] Although the description of the present utility model is carried out in combination with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Therefore, all such substitutions, improvements and changes are included within the spirit and scope of the appended claims.

Claims

1. An understory soil sampler, characterized in that, including a drill pipe (1); a drill bit (2), including a main body (21), the main body (21) being provided on the drill pipe (1), and an inner wire mesh sleeve (22) for collecting soil samples being movably arranged inside the main body (21); and a push rod (3); being movably inserted into the drill pipe (1), a locking structure (31) for locking the push rod (3) being provided between the push rod (3) and the drill pipe (1), the push rod (3) being detachably connected to the inner wire mesh sleeve (22), and the push rod (3) pushing out the inner wire mesh sleeve (22) inside the main body (21); hollow slots (222) for soil sample sampling are formed on the inner wire mesh sleeve (22).

2. The understory soil sampler according to claim 1, characterized in that, The locking structure (31) includes an outer joint (311), provided on the drill pipe (1), the push rod (3) being inserted into the outer joint (311), and a plurality of abutting pieces (312) for clamping the push rod (3) being provided on the outer joint (311); and a locking sleeve (313), sleeved on the outside of the outer joint (311) and detachably connected to the outer joint (311), the locking sleeve (313) including an abutting end (3131), the abutting end (3131) pressing the abutting pieces (312) onto the push rod (3), and the plurality of abutting pieces (312) clamping to lock the push rod (3).

3. The understory soil sampler according to claim 2, characterized in that, The push rod (3) includes a rod body (32) and an anti - detachment part (33), wherein the rod body (32) is detachably connected to the inner wire mesh sleeve (22), and the anti - detachment part (33) is located at one end of the rod body (32) away from the inner wire mesh sleeve (22).

4. The understory soil sampler according to claim 1, wherein An inner joint (221) is provided on the inner wire mesh sleeve (22), and the push rod (3) includes an inner connecting end (34), the inner connecting end (34) being inserted into the inner joint (221) and threadedly connected to the inner joint (221).

5. The understory soil sampler according to claim 4, characterized in that, A rubber ring (23) is provided on the inner wire mesh sleeve (22), and the rubber ring (23) is located between the inner wire mesh sleeve (22) and the main body (21) to prevent soil from entering between the inner wire mesh sleeve (22) and the main body (21).

6. The understory soil sampler according to claim 1, characterized in that, A handle (4) is provided on the drill pipe (1), and a limiting structure (41) for assisting in fixing the push rod (3) is provided between the handle (4) and the push rod (3).

7. The understory soil sampler according to claim 6, wherein, The handle (4) is communicated with the drill pipe (1), and the limiting structure (41) includes a limiting rod (411), inserted into the handle (4) and detachably connected to the handle (4); and a limiting groove (412), formed on the outer wall of the push rod (3), the limiting rod (411) being inserted into the limiting groove (412), and the limiting rod (411) cooperating with the limiting groove (412) to limit the rotation of the push rod (3).

8. The understory soil sampler according to claim 1, characterized in that, A footrest (5) is provided on the drill pipe (1).

9. The understory soil sampler according to claim 1, characterized in that, A cutting ring (24) for breaking soil is provided on the main body (21) of the drill bit (2), and the cutting ring (24) is detachably connected to the main body (21).

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