CN210198763U

CN210198763U - A soil sampling assembly and sampling device

Info

Publication number: CN210198763U
Application number: CN201921136552.XU
Authority: CN
Inventors: Wei Zhao; 赵卫; Ying Xiao; 肖颖; Xinsheng Zhu; 朱新胜; Tao Wang; 王涛
Original assignee: Nanjing Institute of Environmental Sciences MEP
Current assignee: Nanjing Institute of Environmental Sciences MEP
Priority date: 2019-07-18
Filing date: 2019-07-18
Publication date: 2020-03-27
Anticipated expiration: 2029-07-18

Abstract

The present application relates to the field of sample collection, in particular, to a soil sampling assembly and a sampling device. The soil sampling assembly includes a housing, a sampling cartridge, and a cutting assembly. The cutting assembly includes a plurality of cutting knives, which are distributed at intervals along the circumference of the sampling cylinder; the outer casing is fixedly connected to the sampling cylinder, and the inner wall of the outer casing near the first end has a plurality of guiding surfaces, and the plurality of guiding surfaces and the cutters are one by one. Correspondingly arranged and located on the outer side of the cutter, the guide surface gradually approaches the outer wall of the sampling cylinder from the second end to the first end, so that after the cutter moves in the direction from the second end to the first end, each cutter can move in the first end. An opening close to each other. The interconnected housing and sampling cartridge can protect sampling in situ. The cutter is guided by the guide surface for cutting. During the cutting process of the cutting assembly, the cutter cuts off the connection between the sample and the surrounding soil, maintaining the original structure of the sample, and directly extracting the sample after sampling, avoiding cutting and separating the surrounding soil. The sampling process is simple and fast .

Description

Soil sampling subassembly and sampling device

Technical Field

The application relates to the field of sample collection, in particular to a soil sampling assembly and a sampling device.

Background

Common tools for collecting wetland soil samples include a shovel, a cutting ring, a soil drill, a barrel drill, an undisturbed soil sampling device and the like. In many sampling processes, in-situ soil needs to be collected and the undisturbed structure of the soil needs to be kept; however, in the process of collecting wetland soil samples in the prior art, the samples are difficult to take out under the condition of keeping the original structure of the wetland soil.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of this application is to provide a soil sampling subassembly and sampling device, it aims at improving the environment that needs to destroy sample self and sample periphery to a great extent among the current soil sampling subassembly sampling process, the difficult problem of operating of sampling process.

This application first aspect provides a soil sampling subassembly, and soil sampling subassembly includes:

the sampling tube is provided with a first end and an opposite second end, and the first end of the sampling tube is provided with a first opening.

The cutting assembly comprises a plurality of cutters capable of deforming under stress, the cutters can move along the direction from the second end to the first end, and the cutters are distributed at intervals along the circumferential direction of the sampling cylinder; and

the shell, shell and sampler barrel fixed connection, the shell has seted up the second opening in the tip that is close to first end. The inner wall that the shell is close to first end has a plurality of guide surfaces, and a plurality of guide surfaces set up and are located the outside of cutter with the cutter one-to-ones, and the guide surface is held by the second and is close to the outer wall of sampling tube gradually to the direction of first end to make the cutter follow the direction motion of second end to first end each cutter can draw close each other at first opening part.

The shell and the sampling cylinder which are connected with each other can protect sampling in situ. The cutter is guided to cut through the guide surface, the contact area of the cutter and the sample in the cutting process of the cutting assembly is small, the integrity of the sample is guaranteed to a great extent, great damage to the periphery of the sample is avoided, cutting, separation and the like are not needed before sampling, and the sampling process is simple and rapid.

In some embodiments of the first aspect of the present application, the housing is provided with a reduced diameter end near the first end, the reduced diameter end having an inner diameter gradually decreasing from the second end toward the first end, and the plurality of guide surfaces are located on an inner wall of the reduced diameter end.

The direction of leading face that forms is reduced gradually to the direction internal diameter of first end by the second end, and the cutter is in the direction motion process along second end to first end, and the cutter can be contradicted with the inner wall that the shell is close to first end, and the direction of motion of cutter changes under the effect of shell inner wall to it draws close to retrain cutter.

In some embodiments of the first aspect of the present application, the housing defines a first aperture at an end proximate the second end.

The cutting assembly further comprises a first driving piece, the first driving piece penetrates through the first through hole to be connected with the cutter, and the first driving piece can drive the cutter to move along the direction from the second end to the first end.

In some embodiments of the first aspect of the present application, the soil sampling assembly further comprises an elastic member, one end of the elastic member abuts against the first driving member, and the other end of the elastic member abuts against an end of the sampling cylinder close to the second end; the elastic member has a tendency to move the first driving member away from the sampling tube after being compressed by the first driving member.

The elastic piece is arranged to enable the first driving piece to be quickly restored after the cutting of the driving cutter is completed; the sampling process is faster.

In some embodiments of the first aspect of the present application, the first driving member includes a pressing portion and a connecting portion connected to the cutting knife, the connecting portion is installed between the sampling tube and the casing, and the pressing portion extends into the first through hole and is connected to the connecting portion.

In some embodiments of the first aspect of the present application, the sampling tube has a second through hole at an end portion thereof adjacent to the second end.

Soil sampling subassembly is still including pushing away the appearance piece, pushes away the second driving piece and the push pedal that the appearance piece includes interconnect, and the push pedal sets up in the sampler barrel, and the second driving piece passes first through-hole, second through-hole in proper order and is connected with the push pedal, and the second driving piece can drive the push pedal and move along sampler barrel degree of depth direction.

The soil sampling subassembly can make the sample in the sampling tube take out fast.

In some embodiments of the first aspect of the present application, the second driving member includes a pull rod, and the pull rod sequentially passes through the first through hole and the second through hole to be connected to the push plate.

In some embodiments of the first aspect of the present application, the sampling tube is fixedly connected to the housing by a plurality of connecting members, and the plurality of connecting members are circumferentially spaced apart along the sampling tube; a cutter passes between two adjacent connectors.

The connecting piece is connected with the sampling cylinder and the shell, and the sampling cylinder and the shell are prevented from moving relatively in the working process of the soil sampling assembly. The adjacent connecting pieces restrict the moving direction of the cutter, so that the cutter moves along the axial direction of the sampling tube as much as possible.

In a second aspect, the present application provides a sampling device, which includes a supporting shell, and the soil sampling assembly detachably connected to the supporting shell;

the end part of the supporting shell close to the first end is provided with a third opening, and the shell can extend into the supporting shell through the third opening.

Sampling device has above-mentioned soil sampling component's advantage. In addition, support the shell and can be used for accomodating soil sampling component, bury soil sampling component underground in treating the sample position through supporting the shell, will support shell and soil sampling component separation again. The supporting shell can prevent the soil sampling assembly from being inclined when being buried in a sampling position.

In some embodiments of the second aspect of the present application, the end of the support shell near the second end is provided with a fourth through hole;

the sampling device further comprises a third driving piece, the third driving piece can penetrate through the fourth through hole to be abutted against the shell, and the third driving piece can drive the shell to move along the direction from the second end to the first end.

The third driving piece can move relative to the fourth through hole and is mainly used for abutting against the shell of the soil sampling assembly, so that the soil sampling assembly extends into a position to be sampled; the soil sampling assembly can enter the position to be sampled in a labor-saving manner.

In some embodiments of the second aspect of the present application, the third driving element includes a pressing rod and a pressing plate connected to each other, the pressing plate is disposed in the supporting shell and abuts against the outer shell, and the pressing rod is connected to the pressing plate through the fourth through hole.

In the use process, pressure is applied to the pressure rod and is transmitted to the shell through the pressure plate, so that the shell moves relative to the support shell and extends into a position to be sampled. The cooperation of depression bar and clamp plate is used laborsavingly and can not cause the laxity to the sample in the sampling tube simultaneously.

In some embodiments of the second aspect of the present application, the length direction of the pressing rod is provided with an external thread, and the inner wall of the fourth through hole is provided with an internal thread matching with the external thread.

The pressure bar passes through threaded connection with the support shell, and rotatory pressure bar, pressure bar and support shell interact make the support shell stretch into and wait to sample the position, and the pressure bar promotes the clamp plate simultaneously, further promotes soil sampling subassembly and stretches into and wait to sample the position.

In some embodiments of the second aspect of the present application, the end of the support shell near the first end is provided with a non-slip portion.

The antiskid portion can avoid the support shell to slide relative to the sampling position, and the structural integrity of sampling is guaranteed.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 is a schematic view showing the internal structure of a soil sampling assembly provided in example 1 of the present application;

FIG. 2 is a schematic cross-sectional view of a cutting blade, a sampling tube and a housing provided in example 1 of the present application;

fig. 3 shows a schematic cross-sectional view of a housing provided in embodiment 1 of the present application;

FIG. 4 is a schematic structural diagram of a cutting assembly provided in embodiment 1 of the present application;

fig. 5 is a schematic structural diagram of a sample pushing member provided in embodiment 1 of the present application;

fig. 6 shows a schematic cross-sectional view of a sampling device provided in example 2 of the present application.

Icon: 100-a soil sampling assembly; 101-a first end; 102-a second end; 103-a guide surface; 110-a housing; 111-a second opening; 112-a first via; 120-a sampling tube; 121 — a first opening; 122-a second via; 123-connecting piece; 130-a cutting assembly; 131-a first drive member; 1311-a pressing part; 1312-a connecting part; 1313-shaft hole; 132-a cutter; 140-sample pushing; 141-a second drive member; 142-a push plate; 143-a pull rod; 150-an elastic member; 200-a sampling device; 201-a non-slip part; 210-a support shell; 211-third opening; 212-a fourth via; 220-a third drive member; 221-a pressure bar; 222-pressing plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present application, it should be understood that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when products of the application are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are used only for convenience in describing the application and simplifying the description, but do not indicate or imply that the devices or elements that are referred to must have specific orientations, be constructed in specific orientations, and operate, and therefore, should not be construed as limiting the application.

Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may for example be fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Example 1

Fig. 1 is a schematic diagram illustrating an internal structure of a soil sampling assembly 100 provided in embodiment 1 of the present application, and referring to fig. 1, the present embodiment provides a soil sampling assembly 100, and as an example, in the present embodiment, the soil sampling assembly 100 is mainly used for collecting wetland soil samples. It should be noted that the present application is not limited to sampling and use of soil sampling assembly 100.

Soil sampling assembly 100 includes a housing 110, a sampling tube 120, and a cutting assembly 130 (see fig. 4). The sampling tube 120 has a first end 101 and a second end 102. The second end 102 is disposed opposite to the first end 101 and is respectively located at two ends of the sampling tube 120 along the length direction.

The housing 110 has a second opening 111 at an end adjacent the first end 101, and the inner wall of the housing 110 adjacent the first end 101 has a plurality of guide surfaces 103.

The sampling tube 120 has a first opening 121 at an end thereof adjacent to the first end 101. The second opening 111 and the first opening 121 mainly serve to allow the sample to enter or move out of the sampling cylinder 120.

The cutting assembly 130 (see fig. 4) is primarily used to cut soil; the cutting assembly 130 includes a plurality of force-deformable cutters 132, for example, in the present embodiment, the cutting assembly 130 includes four cutters 132. Four cutters 132 are spaced circumferentially around the sampling tube 120. In other words, there is a gap between the two cutters 132.

The cutting knife 132 is disposed between the outer wall of the sampling tube 120 and the inner wall of the housing 110, the cutting knife 132 can move along the direction from the second end 102 to the first end 101, the plurality of guide surfaces 103 and the cutting knife 132 are disposed in a one-to-one correspondence and are located outside the cutting knife 132, and the guide surfaces 103 are gradually close to the outer wall of the sampling tube 120 from the second end 102 to the first end 101, so that the cutting knives 132 can be close to each other at the first opening 121 after moving along the second end 102 to the first end 101.

Further, the guide surface 103 provided to the housing 110 mainly functions to guide the moving direction of the cutting blade 132. After the cutting blades 132 are moved along the second end 102 in the direction of the first end 101, the cutting blades 132 can contact the guide surface 103 to change the moving direction of the cutting blades 132, so that the cutting blades 132 can be close to each other at the first opening 121.

Further, in the embodiment of the present application, the cutting blades 132 can be close to each other at the first opening 121, which means that the ends of the cutting blades 132 far away from the second end 102 can be close to each other, so as to cut off the sample to be sampled from the surrounding soil.

Illustratively, in the present embodiment, the housing 110 and the sampling tube 120 are both substantially cylindrical, the sampling tube 120 is installed in the housing 110, the housing 110 and the sampling tube 120 are coaxially disposed, and the housing 110 and the sampling tube 120 are fixedly connected.

It is understood that in other embodiments of the present application, the shape of the outer shell 110 may be prismatic, elliptical cylindrical, or other irregular shapes. Accordingly, the withdrawal chimney 120 can also have other shapes. Further, the housing 110 and the probe barrel 120 may be mounted on different axes.

Further, in the present embodiment, the end of the second end 102 of the outer shell 110 is provided with a first through hole 112. The sampling tube 120 has a second through hole 122 formed at an end thereof adjacent to the second end 102. It is understood that in other embodiments of the present application, the housing 110 may be a straight cylinder type without the first through hole 112, and accordingly, the sampling cylinder 120 may not be provided with the second through hole 122.

Fig. 2 shows a schematic cross-sectional view of the cutting knife 132, the sampling tube 120 and the housing 110 according to an embodiment of the present disclosure, please refer to fig. 1 and fig. 2.

As mentioned above, the outer wall of the sampling tube 120 is connected to the inner wall of the housing 110. In this embodiment, the sampling tube 120 is connected to the housing 110 through four connecting members 123, one end of each connecting member 123 is connected to the outer wall of the sampling tube 120, the other end of each connecting member 123 is connected to the inner wall of the housing 110, and the four connecting members 123 are circumferentially spaced along the sampling tube 120. In other words, a gap is formed between two adjacent connecting members 123, and one cutting knife 132 passes through the gap between two adjacent connecting members 123.

In this embodiment, the number of the connecting members 123 may be greater than that of the cutting blades 132, and may be 5, 6, 8, or the like. Accordingly, the number of cutters 132 may be 2, 3, 5, etc.

In this embodiment, the connecting member 123 has at least two functions; first, the sampling cylinder 120 is connected to the housing 110 to prevent the sampling cylinder 120 from moving relative to the housing 110 during operation of the soil sampling assembly 100. Secondly, as a tool rest of the cutter 132, the moving direction of the cutter 132 is restricted, so that the cutter 132 moves along the axial direction of the sampling tube 120 as much as possible.

Fig. 3 is a schematic cross-sectional view of the housing 110 according to the embodiment of the present application, please refer to fig. 3 and 2.

In this embodiment, the housing 110 is provided with a reduced diameter end (not shown) near the first end 101, the reduced diameter end gradually decreases in inner diameter from the second end 102 to the first end 101, and a plurality of guide surfaces 103 are located on the inner wall of the reduced diameter end.

In other words, the housing 110 has a gradually decreasing inner diameter near the first end 101 for guiding the cutting knife 132. During the movement of the cutting knife 132 along the direction from the second end 102 to the first end 101, the cutting knife 132 will interfere with the inner wall of the housing 110 near the first end 101, and the movement direction of the cutting knife 132 is changed under the action of the inner wall of the housing 110, so as to restrain the cutting knife 132 to enable at least part of the cutting edge to contact.

It should be noted that, in other embodiments of the present application, the housing 110 may have other shapes, and the housing 110 and the sampling tube 120 may restrict the movement direction of the cutting knife 132 so that the cutting knife 132 can close to cut off the sample.

For example, a protrusion is provided on the inner wall of the housing 110, the guide surface 103 is located on the protrusion, and the protrusion restricts the moving direction of the cutter 132; further, the guide surface 103 may be a spiral surface. Alternatively, a plurality of grooves may be formed on the inner wall of the housing 110, so that the cutter 132 moves along the grooves.

In some embodiments of the present disclosure, the end of the sampling cylinder 120 near the second end 102 is provided with a drainage hole (not shown) penetrating through the wall, and the drainage hole is mainly used for draining water or liquid above the surface of the sample after the sample under the flooding environment enters the sampling cylinder 120.

By way of example, the present embodiments provide a cutting assembly 130.

Fig. 4 is a schematic structural diagram of a cutting element 130 according to an embodiment of the present disclosure, please refer to fig. 1 and fig. 4.

In this embodiment, the cutting assembly 130 includes a first driving member 131 and a cutter 132; illustratively, the first driving member 131 includes a pressing portion 1311 and a connecting portion 1312, the connecting portion 1312 is connected to the cutting knife 132, the connecting portion 1312 is installed between the sampling tube 120 and the housing 110, the pressing portion 1311 extends into the first through hole 112 and is connected to the connecting portion 1312, and the cutting knife 132 is driven to move by the pressing portion 1311.

In the present embodiment, the pressing portion 1311 has a cylindrical rod shape, and the outer diameter of the pressing portion 1311 is smaller than the inner diameter of the first through hole 112. The connection portion 1312 has a disk shape, and the connection portion 1312 has an outer diameter greater than an inner diameter of the first through hole 112, so that the connection portion 1312 cannot pass through the first through hole 112. The pressing portion 1311 and the connecting portion 1312 are integrally provided.

It should be noted that, in other embodiments of the present application, the pressing portion 1311 may be a prism-shaped rod or other irregular-shaped structure, as long as the pressing portion 1311 can move relative to the first through hole 112. The connecting portion 1312 may have another shape such as a square disk. The pressing portion 1311 and the connecting portion 1312 may be connected by welding, adhering, or clipping, and when the cutting assembly 130 is in operation, the connecting portion 1312 and the pressing portion 1311 do not fall off.

As mentioned above, the withdrawal chimney 120 is mounted within the housing 110. The distance between the end of the sampling tube 120 and the second end 102 is greater than the distance between the end of the outer shell 110 and the second end 102, and a space is formed between the end of the sampling tube 120 and the end of the outer shell 110, and the space is used for the connection part 1312 to move; after the pressing portion 1311 applies a force to the connecting portion 1312, the connecting portion 1312 can move in the space to move the cutting knife 132 along the direction from the second end 102 to the first end 101 until at least a part of the cutting edge of the cutting knife 132 contacts the soil to be cut.

One end of the pressing part 1311 away from the connecting part 1312 can extend into the first through hole 112; in other words, when the pressing portion 1311 is not biased, one end of the pressing portion 1311 away from the connecting portion 1312 may be located on a side of the first through hole 112 close to the second end 102, or may be located on a side of the first through hole 112 away from the second end 102. After the pressing portion 1311 is forced, the connecting portion 1312 moves to drive the pressing portion 1311 to move, and at this time, one end of the pressing portion 1311 away from the connecting portion 1312 may be located on one side of the first through hole 112 close to the second end 102, or on one side of the first through hole 112 away from the second end 102.

In the present embodiment, the cutting knife 132 is made of a flexible material, and may be an aluminum alloy sheet, a copper sheet, an iron sheet, or a plastic sheet. Under the action of force, the cutting blades 132 have certain flexibility, and the moving direction of the cutting blades 132 is changed after the cutting blades 132 contact the sampling tube 120 or the shell 110, so that the cutting blades 132 are close to each other.

In the present embodiment, a member that drives the movement of the pressing portion 1311 is not shown. As an example, the movement of the pressing part 1311 may be driven by a human power; alternatively, the pressing portion 1311 may be driven to move by a power device such as an air cylinder or a hydraulic cylinder.

In other embodiments of the present application, the first driving member 131 may have other structures, for example, the first driving member 131 includes a plurality of handles connected to the cutting knife 132, the handles extend out of the first through hole 112, and the handles drive the cutting knife 132 to move along the direction from the second end 102 to the first end 101.

In some embodiments of the present application, soil sampling assembly 100 further comprises a sample push 140, the primary purpose of sample push 140 being; the cutting assembly 130 pushes out the soil in the sampling tube 120 after cutting the soil.

Fig. 5 is a schematic structural diagram of a sample pushing element 140 according to an embodiment of the present disclosure, please refer to fig. 5 and fig. 1.

The sample pushing member 140 includes a second driving member 141 and a push plate 142 connected to each other, the push plate 142 is disposed in the sampling cylinder 120, the second driving member 141 sequentially passes through the first through hole 112 and the second through hole 122 and is connected to the push plate 142, and the second driving member 141 can drive the push plate 142 to move along the depth direction of the sampling cylinder 120, so that the sample of the sampling cylinder 120 can be removed from the first opening 121.

In the present embodiment, the depth direction of the sampling tube 120 refers to the direction from the first end 101 to the second end 102.

As mentioned above, in some embodiments of the present application, the sampling tube 120 is provided with a second through hole 122 at the end of the second end 102.

In this embodiment, the second driving member 141 includes a pull rod 143, the pressing portion 1311 is provided with a shaft hole 1313 (see fig. 4) for the pull rod 143 to pass through, and the pull rod 143 passes through the shaft hole 1313 and the second through hole 122 in sequence to be connected to the push plate 142.

In the present embodiment, the push plate 142 is a thin circular plate, and the diameter of the push plate 142 is larger than that of the second through hole 122. In other embodiments, the pushing plate 142 can have other shapes, such as an elongated plate.

Referring to fig. 4 and fig. 5 again, in the present embodiment, the pressing portion 1311 is provided with a shaft hole 1313, and the shaft hole 1313 penetrates through the entire pressing portion 1311 and is communicated with the first through hole 112 and the second through hole 122. The shaft hole 1313 through which the pull rod 143 passes and the second through hole 122 are connected to the push plate 142.

After the cutting assembly 130 cuts the soil, a force is applied to the pull rod 143, so as to drive the push plate 142 to move along the direction from the first end 101 to the second end 102, and the soil sample in the sampling cylinder 120 is taken out from the sampling cylinder 120.

In this embodiment, the pull rod 143 can be driven to move by human power when in use; alternatively, the pull rod 143 is driven to move by a power device such as an air cylinder or a hydraulic cylinder.

In the embodiment of the present application, the sample pusher 140 may not be provided. The sample in the sampling cylinder 120 can be poured directly. Accordingly, the sampling tube 120 may not be provided with the second through hole 122.

Further, in this embodiment, the soil sampling assembly 100 further includes an elastic member 150, one end of the elastic member 150 abuts against the first driving member 131, and the other end abuts against the end of the sampling cylinder 120 close to the second end 102. After the elastic member 150 is compressed by the first driving member 131, the first driving member 131 tends to move away from the sampling tube 120.

In other words, the opposite ends of the elastic member 150 respectively abut against the sampling tube 120 and the first driving member 131. When the first driving member 131 drives the cutter 132 to move, the elastic member 150 is compressed, and the elastic member 150 has a tendency to reset the first driving member 131. Further, in the present embodiment, one end of the elastic member 150 is connected to the connection portion 1312, and the other end abuts against the sampling tube 120.

In this embodiment, the elastic member 150 is a spring, and in other embodiments of the present application, the elastic member 150 may also be an elastic rubber column made of an elastic material. Alternatively, in some embodiments of the present application, the elastic member 150 may not be provided.

By way of example, the present embodiment provides a method of using the soil sampling assembly 100:

extending the outer shell 110 and the sampling cylinder 120 into a sampling position (e.g., buried in wetland soil), for example, burying the entire outer shell 110 into the sampling position; during the embedding process, the sample enters the sampling tube 120 through the second opening 111 and the first opening 121. The pressing portion 1311 is forced, the elastic member 150 is compressed, and the connecting portion 1312 pushes the cutting knife 132 to move in a direction from the second end 102 to the first end 101 until the ends of the cutting knife 132 come close to each other to cut soil. The entire housing 110 is taken out of the sampling position together with the sampling tube 120, and the pressing portion 1311 is removed from the force applied thereto, and the pressing portion 1311, the connecting portion 1312, and the cutter 132 are reset by the elastic member 150. Force is applied to the pull rod 143, and the pull rod 143 pushes the push plate 142 to move along the direction from the first end 101 to the second end 102, so that the soil in the sampling cylinder 120 is taken out from the sampling cylinder 120.

The main advantages of the soil sampling assembly 100 provided by the embodiment of the present application are:

sampling can be performed in situ by the housing 110 and the sampling tube 120 being connected to each other. The guide surface 103 guides the cutter 132 to cut, the contact area of the cutter 132 and the sample in the cutting process of the cutting assembly 130 is small, the integrity of the sample is guaranteed to a large extent, great damage to the periphery of the sample is avoided, cutting, separation and the like are not needed before sampling, and the sampling process is simple and rapid. The second driving member 141 acts on the push plate 142 to push the sample in the sampling cylinder 120 out of the sampling cylinder 120, so that the original structure of the soil sample is well maintained in the whole sampling process. Further, the elastic member 150 is disposed to enable the first driving member 131 to recover quickly after the cutting of the driving cutter 132 is completed, which is more labor-saving in the sampling process.

Example 2

Fig. 6 is a schematic cross-sectional view of a sampling device 200 provided in embodiment 2 of the present application, and referring to fig. 6, the present embodiment provides a sampling device 200. In the present embodiment, the sampling device 200 includes the supporting housing 210 and the soil sampling assembly 100 provided in embodiment 1. The structure of the soil sampling assembly 100 will not be described in detail in this embodiment.

Please refer to fig. 1-6. The end of the support shell 210 near the first end 101 is provided with a third opening 211, and the outer shell 110 can extend into the support shell 210 through the third opening 211; support housing 210 is removably coupled to soil sampling assembly 100.

In the present embodiment, the supporting shell 210 is cylindrical, and the supporting shell 210 is sleeved outside the outer shell 110. In other embodiments of the present application, the support housing 210 may have other configurations or other shapes.

The supporting shell 210 can be used for accommodating the soil sampling assembly 100, burying the soil sampling assembly 100 in a position to be sampled through the supporting shell 210, and separating the supporting shell 210 from the soil sampling assembly 100. The support housing 210 may prevent the soil sampling assembly 100 from skewing when buried in a sampling position.

Further, in the present embodiment, the end of the support case 210 near the first end 101 is provided with a slip prevention portion 201; the main function of the anti-slip part 201 is to prevent the support shell 210 from sliding relative to the sampling position, for example, to prevent the support shell 210 from sliding relative to the surface layer of the soil, so as to ensure the structural integrity of the sampling. The anti-slip part 201 may be an anti-slip nail foot, an anti-slip bump, an anti-slip pattern, or the like.

Further, in the present embodiment, an end of the support case 210 near the second end 102 is provided with a fourth through hole 212. The sampling device 200 further comprises a third driving member 220, wherein the third driving member 220 is abutted to the outer shell 110 through the fourth through hole 212 and can drive the outer shell 110 to move along the direction from the second end 102 to the first end 101.

In other words, the third driving member 220 can move relative to the fourth through hole 212, and the third driving member 220 is mainly used for supporting the housing 110 of the soil sampling assembly 100, so that the soil sampling assembly 100 extends into the position to be sampled.

Referring to fig. 6 again, in the present embodiment, the third driving member 220 includes a pressing rod 221 and a pressing plate 222, one end of the pressing rod 221 is connected to the pressing plate 222, and the other end thereof extends out of the fourth through hole 212. Further, the pressure plate 222 may be a circular thin plate, the diameter of the pressure plate 222 is larger than the inner diameter of the fourth through hole 212, and the pressing rod 221 is connected to the pressure plate 222 through a screw thread. In other embodiments of the present application, the platen 222 may be shaped as a square plate, a rectangular plate, or the like. The pressing rod 221 and the pressing plate 222 may be connected by other methods, such as clamping, integral arrangement, etc.

Pressure is applied to the plunger 221 and transmitted to the housing 110 through the pressure plate 222, thereby moving the housing 110 relative to the support housing 210 into the position to be sampled.

In this embodiment, the pressing plate 222 is a circular thin plate, one end of the pressing plate 222 away from the pressing rod 221 abuts against the housing 110, and the pressing plate 222 does not contact with the second driving element 141 and the first driving element 131. For example, the pressure plate 222 is provided with a groove capable of accommodating the second driver 141, the end of the first driver 131 close to the second end 102. Alternatively, the pressing plate 222 may be a rod, the pressing plate 222 has an inverted U-shaped structure, and the pressing plate 222 "avoids" the second driving member 141 and the end portion of the first driving member 131 near the second end 102. During the process that the third driving element 220 drives the outer shell 110 to move relative to the supporting shell 210, the third driving element 220 is not in contact with the second driving element 141 and the first driving element 131.

As an example, the motion of the plunger 221 may be driven by a human force; alternatively, the pressing rod 221 is driven to move by a power device such as an air cylinder or a hydraulic cylinder. The pressure bar 221 may be provided with a handle that is sleeved with an anti-slip rubber sleeve that prevents the handle from slipping when rotated.

Further, in the present embodiment, an external thread (not shown) is disposed in the length direction of the pressing rod 221, and an internal thread matching the external thread is disposed on the inner wall of the fourth through hole 212.

The pressing rod 221 is connected with the supporting shell 210 through threads, the pressing rod 221 is rotated, the pressing rod 221 interacts with the supporting shell 210, the supporting shell 210 extends into a position to be sampled, meanwhile, the pressing rod 221 pushes the pressing plate 222, and the soil sampling assembly 100 is further pushed to extend into the position to be sampled. Pulling plunger 221 separates third drive member 220 and support shell 210 from soil sampling assembly 100.

As an example, the present embodiment provides a method of using the sampling device 200:

when the handle is rotated, the pressing rod 221 moves relative to the supporting shell 210, the mutual acting force of the pressing rod 221 and the supporting shell 210 enables the supporting shell 210 to extend into the position to be sampled, meanwhile, the pressing plate 222 pushes the soil sampling assembly 100 to extend into the position to be sampled, and the third driving piece 220 and the supporting shell 210 are separated from the soil sampling assembly 100 by lifting and pulling the pressing rod 221.

The pressing portion 1311 is urged to compress the spring, so that the connecting portion 1312 pushes the cutting knife 132 to move in a direction from the second end 102 to the first end 101 until the ends of the cutting knife 132 come close to each other to cut soil. The entire housing 110 is taken out of the sampling position together with the sampling tube 120, the force applied to the pressing portion 1311 is removed, and the pressing portion 1311, the connecting portion 1312, and the cutter 132 are returned by the action of the spring. Force is applied to the pull rod 143, and the pull rod 143 pushes the push plate 142 to move along the direction from the first end 101 to the second end 102, so that the soil in the sampling cylinder 120 is taken out from the sampling cylinder 120.

The sampling device 200 provided by the embodiment of the present application has at least the following advantages in addition to the advantages of the soil sampling assembly 100:

the supporting shell 210 can be used for accommodating the soil sampling assembly 100, the soil sampling assembly 100 is buried in a position to be sampled through the supporting shell 210, and the supporting shell 210 can prevent the soil sampling assembly 100 from being inclined when being buried in the sampling position. The anti-slip portion 201 can further prevent the support shell 210 from sliding relative to the sampling position, so as to ensure the structural integrity of the sampling. The third driving member 220 makes the soil sampling assembly 100 extend into the position to be sampled; the soil sampling assembly 100 is quickly moved to the position to be sampled; ensuring that a sample with the undisturbed structure of the soil is obtained.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A soil sampling assembly, characterized in that, soil sampling assembly includes:

the sampling tube is provided with a first end and an opposite second end, and the first end of the sampling tube is provided with a first opening;

the shell is fixedly connected with the sampling tube, and a second opening is formed in the end part, close to the first end, of the shell; the inner wall that the shell is close to first end has a plurality of guide surfaces, and is a plurality of the guide surface with the cutter one-to-one sets up and is located the outside of cutter, the guide surface by the second end to the direction of first end is close to gradually the outer wall of sampling tube, so that the cutter is followed the second end is extremely each after the direction motion of first end the cutter can be in each opening part draws close together each other.

2. The soil sampling assembly of claim 1, wherein the housing is provided with a reduced diameter end adjacent the first end, the reduced diameter end having a decreasing inner diameter from the second end toward the first end, and wherein the plurality of guide surfaces are located on an inner wall of the reduced diameter end.

3. The soil sampling assembly of claim 1, wherein the housing defines a first through-hole at an end proximate the second end;

4. The soil sampling assembly of claim 3, further comprising a resilient member having one end abutting the first drive member and another end abutting an end of the sampling barrel proximate the second end; the elastic member has a tendency to move the first driving member away from the sampling tube after being compressed by the first driving member.

5. The soil sampling assembly of claim 3, wherein the first driving member comprises a pressing portion and a connecting portion connected to the cutting blade, the connecting portion is mounted between the sampling tube and the housing, and the pressing portion extends into the first through hole and is connected to the connecting portion.

6. The soil sampling assembly of claim 3, wherein the sampling barrel defines a second through-hole at an end adjacent the second end;

soil sampling subassembly is still including pushing away the appearance piece, it includes interconnect's second driving piece and push pedal to push away the appearance piece, the push pedal set up in the sampling tube, the second driving piece passes in proper order first through-hole the second through-hole just with the push pedal is connected, the second driving piece can drive the push pedal is followed the movement of sampling tube depth direction.

7. The soil sampling assembly of claim 6, wherein the second driving member comprises a pull rod, and the pull rod sequentially passes through the first through hole and the second through hole to be connected with the push plate.

8. The soil sampling assembly of claim 1, wherein the sampling barrel is fixedly coupled to the housing by a plurality of coupling members, the plurality of coupling members being circumferentially spaced along the sampling barrel; one of the cutters passes between two adjacent ones of the connectors.

9. A sampling device, wherein the sampling device comprises a support housing, the soil sampling assembly of any one of claims 1-8 removably attached to the support housing;

the end part of the supporting shell, which is close to the first end, is provided with a third opening, and the shell can extend into the supporting shell through the third opening.

10. The sampling device of claim 9, wherein an end of the support housing proximate the second end is provided with a fourth through-hole;

the sampling device further comprises a third driving piece, the third driving piece can penetrate through the fourth through hole to be abutted to the outer shell, and can drive the outer shell to move along the direction from the second end to the first end.