CN212780020U - Soil sample sampler - Google Patents

Abstract

The utility model discloses a soil sample sampler, including actuating lever, handle, sampling joint, sampling tube and bulldozing head, actuating lever one end is the handle link, and the other end is the joint end, and the handle is installed in the handle link of actuating lever, and the sampling joint is used for being connected with the joint end of actuating lever and the sampling tube one end is detachable respectively when taking a sample to unload from actuating lever and sampling tube when taking out the soil sample in the sampling tube, and the other end tip of sampling tube is equipped with the sample sword ring. The bulldozing head is used for when pushing out the soil sample in the sampling tube, with the detachable connection of the connector end of actuating lever, and the external diameter of bulldozing head is less than the internal diameter of sampling tube. The utility model discloses simple structure is light-duty, and occupation space is little, can cut out the soil sample of different diameters and height according to the actual demand during the use, and the process of taking the soil sample is fairly simple, has the advantage that sampling efficiency is high, the soil sample is stable, has reduced because the disturbance that leads to because soil pressurized, can fine the original state nature of keeping soil.

Description

Soil sample sampler

Technical Field

The utility model relates to a device that fetches earth, in particular to soil sample sampler.

Background

In order to quantitatively evaluate the performance of geotechnical engineering, some soil samples are often taken out from soil bodies for scientific research. Most of the traditional soil sampling methods are that after a drilling machine drills to a specified depth, a general soil sampler is adopted to take out a large soil sample; and (3) transporting the taken soil sample back to a laboratory, cutting the soil sample into blanks larger than the standard sample by using a soil cutter and a wire saw, and then placing the obtained blanks into a soil cutter to perform fine cutting by using the soil cutter and the wire saw until the three-axis sample specification required by the experiment is achieved. However, in the traditional method, the soil sample is separated in a lifting and pulling mode in the sampling process, and the sampling process has poor tightness, so that the structure, density, water content and the like of the soil sample can be seriously influenced, and the mechanical properties of the soil sample are further influenced; in addition, the vibration during transportation disturbs the soil sample, further affecting the soil sample characteristics. In addition, the manufacturing method of cutting the soil sample twice in a laboratory to obtain the soil sample with the three-axis sample specification has low manufacturing efficiency, easily causes low cutting success rate due to unstable operation in the cutting process, and increases disturbance to the soil.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a not enough to prior art exists, the utility model aims at providing a soil sample sampler reduces the disturbance that the in-process of getting soil produced the soil body to make the more original condition of the soil body that is close of indoor geotechnical test's sample, the engineering characteristic of the more true reflection original state soil body of test result.

In order to realize the purpose of the utility model, the utility model discloses a technical scheme be: a soil sample sampler comprises a driving rod, a handle, a sampling joint, a sampling tube and a bulldozing head; one end of the driving rod is a handle connecting end, and the other end of the driving rod is a joint end; the handle is arranged at the handle connecting end of the driving rod; the sampling joint is detachably connected with the joint end of the driving rod and one end of the sampling tube respectively during sampling and is detached from the driving rod and the sampling tube when a soil sample in the sampling tube is taken out; a sampling knife ring is arranged at the end part of the other end of the sampling tube; the bulldozing head is used for when pushing out the soil sample in the sampling tube, with the detachable connection of the connector end of actuating lever, and the external diameter of bulldozing head is less than the internal diameter of sampling tube.

The soil sample sampler comprises two functions of soil sampling and soil unloading, when soil is sampled, the handle, the driving rod, the sampling joint and the sampling tube are sequentially connected to assemble the soil sampling device, the soil sampling device is placed on the soil in a mode that the handle faces upwards and the sampling tube faces downwards, and the force is sequentially transmitted to the driving rod, the sampling joint and the sampling tube through the handle, so that the sampling tube is gradually inserted into the soil; after a certain amount of soil is filled in the sampling pipe, the whole soil sampling device is lifted by the handle to complete the soil sampling link. When unloading soil, separate sampling joint and sampling tube earlier, unload sampling joint from the actuating lever again and connect bulldozing head and actuating lever and accomplish the equipment of unloading soil device promptly, then put the position that former sampling joint was located in the sampling tube with the bulldozing head of unloading soil device, pass to actuating lever, bulldozing head in proper order through at the uniform velocity twist grip application of force for bulldozing the head and removing in the sampling tube inner chamber, and then release the soil sample in the sampling tube, accomplish the link of unloading soil promptly. Therefore, on one hand, the utility model can avoid the huge disturbance to the soil sample caused by adopting the drilling machine to sample the soil in the related technology by utilizing the sampling tube to gradually extend into the soil body to obtain the soil sample; during the taking-out process of the soil sample, the soil sample is always wrapped by the sampling tube, so that the soil sample can be ensured to be in a static state relative to the sampling tube during the taking-out process, and the disturbance on the soil sample is further avoided; on the other hand, the utility model discloses an after utilizing the device that fetches earth to take out the soil sample, dump the thief tab, and install bulldozing the head, assemble into the device that unloads earth, not only can realize progressively realizing unloading the soil sample in the sampling tube through bulldozing the head, avoid the disturbance that the in-process of unloading produced the soil sample, and only need change a joint can realize the function of fetching earth and the change of the function of unloading earth, only need use to a actuating lever can realize with the match of thief tab and bulldozing the head, need not to add the body of rod that matches with bulldozing the head in addition, be favorable to simplifying the structure, improve the convenience and the change efficiency of changing the operation.

Optionally, the periphery of the joint end of the driving rod is provided with an external thread; an inner thread is arranged on the inner wall of one end of the sampling tube, which is connected with the sampling joint; one end of the sampling joint is provided with a screw hole which is screwed with the external thread of the driving rod, and the periphery of the other end of the sampling joint is provided with an external thread which is screwed with the internal thread of the sampling tube; one end of the bulldozing head is provided with a screw hole which is screwed with the external thread of the driving rod. Through the thread setting of actuating lever, sampling tube, sampling joint, bulldozing head for actuating lever, sampling tube, sampling joint, bulldozing head can easily assemble, separate, repack in the link of fetching earth, unloading earth, also easily daily dismantlement, washing and change.

Optionally, the sampling joint, the bulldozing head and the sampling tube are provided with a plurality of sampling tubes with different radial dimension specifications; the sampling connectors and the sampling tubes which are matched in size and specification are in one-to-one correspondence, and the bulldozing heads and the sampling tubes which are matched in size and specification are in one-to-one correspondence. Through setting up the different sampling joint of the radial dimension specification of a plurality of, bulldoze head and sampling tube, can the person of facilitating the use select the sampling joint, bulldoze head and the sampling tube of suitable dimension specification according to required soil sample diameter size in the reality, easily accomplish the sample work of equidimension soil sample not.

Optionally, the soil sample sampler further comprises a sampling limit pipe; the sampling limiting pipe is used for accommodating the sampling pipe during sampling, and the inner wall of the sampling limiting pipe is tightly attached to the outer wall of the sampling pipe when the sampling limiting pipe is accommodated. Through the arrangement of the sampling limit pipe, the protection of each part in the utility model can be facilitated, and the combination of each part is more compact; wherein, the spacing inside pipe wall of sample closely laminates through the mode of inscribe with the sampling tube outer wall, can effectively avoid soil sample to get into the space between spacing inside pipe wall of sample and the sampling tube outer wall, is favorable to keeping the cleanness of spacing inside pipe wall of sample and sampling tube outer wall for a long time, also is favorable to avoiding the sampling tube position to take place the skew in borrowing, improves the stability of borrowing.

Optionally, the one end tip outer wall of the spacing pipe of sample is equipped with the slope angle, effectively reduces the area of sampler and soil body contact, reduces the pressure that the soil body bore, strengthens the utility model discloses a structural stability reduces the experimental data error that causes because the disturbance of soil sample before experimental. Or, a fixing part is formed by horizontally extending one end part of the sampling limit pipe along the pipe diameter direction; the fixed part is provided with a plurality of fixed holes, each fixed hole is matched with a fastener, or the end part of the fixed part extends along the axial direction of the sampling limit pipe to form an insertion convex part. Through the setting of fixed part, fixed orifices, fastener etc. improved the stability of fetching earth greatly, twist reverse the difficult shake of in-process sample cutting ring downwards, the maintenance cutting ring center that can be fine is stable, prevents that the cutting ring of taking a sample from taking place the skew.

Optionally, the outer wall of the driving rod is provided with scales. Through the scale setting of actuating lever outer wall, can realize that the user accurately takes out the soil sample of required height as required in the reality to need not to acquire the soil sample of required height through follow-up numerous and diverse cutting operation, be favorable to conveniently meeting the requirement the operation of taking out of soil sample.

Optionally, the outer wall of the sampling knife ring is provided with a slope angle. Set up the slope angle through the sample sword ring, can be so that at the in-process of fetching earth, reduce the resistance that the sampling tube enters into the soil body, and then reduce the disturbance that the process of fetching earth caused the soil sample, reduced the experimental data error that causes because the disturbance of soil sample before the experiment.

Optionally, the outer wall of the bulldozer head is a cylindrical surface structure. This makes bulldoze head and sampling tube closely laminate, can effectively avoid unloading the soil in-process, and partial soil sample gets into the space between bulldoze head outer wall and the sampling tube inner wall, is favorable to guaranteeing the integrality of soil sample.

Optionally, the handle is detachably mounted at the handle connecting end of the driving rod; through the detachable setting of handle and actuating lever, not only easily daily dismantlement, washing and change make soil sample sampler can be disassembled into several parts that the volume is less moreover, conveniently carry and accomodate.

Optionally, the handle is provided with a screw hole; and the periphery of the handle connecting end of the driving rod is provided with an external thread screwed with the screw hole of the handle.

Drawings

FIG. 1 is a schematic perspective view of a soil sample sampler according to the present invention;

FIG. 2 is a perspective view of the partial structure of the soil sampler of the present invention;

FIG. 3a is a schematic perspective view of a sampling adapter;

FIG. 3b is a front perspective view of the sampling adapter;

FIG. 4a is a schematic perspective view of the bulldozer head;

FIG. 4b is a front perspective view of the bulldozer head;

FIG. 5a is a schematic perspective view of the sampling tube;

FIG. 5b is a perspective view of the construction of the coupon;

in the figure:

1-a handle; 2-a drive rod; 3-a sampling joint; 4-sampling limit tube; 5-sampling tube; 6-bulldozing head; 51-sampling cutting ring.

Detailed Description

Embodiments of the present invention are described in detail below, and the embodiments described below with reference to fig. 1-5 are exemplary and intended to explain the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically 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 invention can be understood by those of ordinary skill in the art through specific situations.

Referring to fig. 1-2, a soil sampler comprises a driving rod 2, a handle 1, a sampling joint 3, a sampling tube 5 and a bulldozer head 6; one end of the driving rod 2 is a handle connecting end, and the other end of the driving rod is a joint end; the handle 1 is arranged at the handle connecting end of the driving rod 2; the sampling joint 3 is detachably connected with the joint end of the driving rod 2 and one end of the sampling tube 5 respectively during sampling, and is detached from the driving rod 2 and the sampling tube 5 when taking out a soil sample in the sampling tube 5; a sampling knife ring 51 is arranged at the other end part of the sampling tube 5; the bulldozing head 6 is used for being detachably connected with the joint end of the driving rod 2 when pushing out the soil sample in the sampling tube 5, and the outer diameter of the bulldozing head 6 is smaller than the inner diameter of the sampling tube 5.

The working principle of the soil sampler is explained as follows:

the soil sample sampler of this scheme has included two functions of borrowing and unloading soil, and two functions are the equipment of two kinds of differences respectively, borrowing device and unloading soil device promptly. When soil is sampled, the handle 1, the driving rod 2, the sampling joint 3 and the sampling tube 5 are sequentially connected to assemble the soil sampling device, the soil sampling device is placed on the soil in a mode that the handle 1 faces upwards and the sampling tube 5 faces downwards, and force is sequentially applied to the driving rod 2, the sampling joint 3 and the sampling tube 5 through the handle 1, so that the sampling tube 5 is gradually inserted into the soil; after a certain amount of soil is filled in the sampling tube 5, the whole soil sampling device is lifted by the handle 1, and then the soil sampling link is completed. When unloading soil, separate sampling joint 3 and sampling tube 5 earlier, unload sampling joint 3 from actuating lever 2 again and connect bulldozing head 6 with actuating lever 2 and accomplish the equipment of the device of unloading soil promptly, then put the bulldozing head 6 of the device of unloading soil in sampling tube 5 former sampling joint 3 position, pass to actuating lever 2, bulldozing head 6 in proper order through 1 application of force of uniform velocity twist grip for bulldozing head 6 removes in sampling tube 5 inner chamber, and then release the soil sample in the sampling tube 5 and accomplish the link of unloading soil.

Therefore, on one hand, the sampling tube 5 is gradually extended into the soil body to obtain the soil sample, so that the huge disturbance of the drilling machine for soil sampling in the related technology can be avoided; in the taking-out process of the soil sample, the soil sample is always wrapped by the sampling tube 5, so that the soil sample can be ensured to be in a static state relative to the sampling tube 5 in the taking-out process, and the disturbance on the soil sample is further avoided; on the other hand, the utility model discloses an utilize the device that fetches earth to take out behind the soil sample, dump sampling joint 3, and install bulldoze head 6, assemble into the device that unloads earth, not only can realize progressively realizing unloading out to the soil sample in the sampling tube 5 through bulldozing head 6, avoid unloading the disturbance that the in-process produced soil sample, and only need change a joint and can realize the function of fetching earth and the change of the function of unloading earth, only need use an actuating lever 2 can realize with sampling joint 3 and the matching of bulldozing head 6, need not to add in addition and bulldoze the body of rod that head 6 matches, be favorable to simplifying the structure, improve the convenience of changing the operation and change efficiency.

It should be noted that, after the soil unloading link is completed, in order to ensure the undisturbed structure of the soil sample, the soil sample is immediately put into a closed box and transported back to the laboratory, and the test can be performed without any other treatment at the later stage.

In one embodiment, the connection between the sampling adapter 3 and the joint end of the driving rod 2, the sampling tube 5, and the dozing head 6 and the joint end of the driving rod 2 are all detachable, and the detachable connection can be a threaded connection, referring to fig. 3a-5b, an external thread is provided on the periphery of the joint end of the driving rod 2, an internal thread 52 is provided on the inner wall of one end of the sampling tube 5 connected to the sampling adapter 3, a screw hole 31 screwed with the external thread of the driving rod 2 is provided on one end of the sampling adapter 3, an external thread 32 screwed with the internal thread 52 of the sampling tube 5 is provided on the periphery of the other end, and a screw hole 61 screwed with the external thread of the driving rod 2 is.

In other embodiments, the detachable connection may also be a connection of a snap-fit structure, the snap-fit structure is formed by combining a male buckle and a female buckle, the male buckle is convex, and the female buckle is concave, for example, the male buckle is disposed at the joint end of the driving rod, the female buckle is disposed on the inner wall of the sampling tube at the end connected to the sampling joint, a female buckle hole matched with the male buckle of the driving rod is disposed at one end of the sampling joint, a male buckle matched with the female buckle of the sampling tube is disposed at the periphery of the other end of the sampling joint, and a female buckle hole matched with the male buckle of the driving rod is disposed at one end.

From this, through the detachable connection setting of the screw thread of actuating lever 2, sampling tube 5, sampling joint 3, bull-dozing head 6 or buckle structure for actuating lever 2, sampling tube 5, sampling joint 3, bull-dozing head 6 can easily assemble, separate, repack in the link of borrowing, unloading soil, also easily daily dismantlement, washing and change.

In order to realize sampling of soil samples with different diameters, in one embodiment, the sampling joint 3, the bulldozing head 6 and the sampling tube 5 are respectively provided with a plurality of sampling joints with different radial dimensions, the sampling joints 3 and the sampling tubes 5 with matched dimensions are in one-to-one correspondence, and the bulldozing heads 6 and the sampling tubes 5 with matched dimensions are in one-to-one correspondence. From this, through setting up the different sampling joint 3 of the radial dimension specification of a plurality of, bull-dozing head 6 and sampling tube 5, can convenience of customers select the sampling joint 3, bull-dozing head 6 and the sampling tube 5 of suitable dimension specification according to required soil sample diameter size in the reality, easily accomplish the sample work of not equidimension soil sample.

For each part of better protection sampler and the stability that improves the sample, in an embodiment, the soil sample sampler still includes the spacing pipe 4 of sample, the spacing pipe 4 of sample is used for holding sampling tube 5 when the sample, and when holding sampling tube 5, stretch into the spacing pipe 4 inside of sample with sampling tube 5 through the mode of inscribe, the internal diameter of the spacing pipe 4 of sample is the same with the external diameter of sampling tube 5 or is similar the same promptly, and then realize the inner wall of the spacing pipe 4 of sample and the outer wall of sampling tube 5 and closely laminate. From this, before getting soil, can stand upright on the soil body with spacing pipe 4 of sampling earlier, then apply certain rotational force to spacing pipe 4 of sampling, make its bottom can stretch into the certain degree of depth of soil body to guarantee that spacing pipe 4 of sampling can stand upright in the soil body steadily, can not empty. Thereafter, the sampling tube 5 of the assembled soil sampling device can be extended downwards into the sampling limit tube 4 until the bottom of the sampling tube 5 is contacted with the surface of the soil body. Then, the handle 1 can be driven according to the operation in the soil sampling process described above, so as to drive the sampling tube 5 to rotate and gradually extend into the soil body, thereby realizing soil sampling. Therefore, the arrangement of the sampling limit pipe 4 is beneficial to protecting each part in the utility model, and each part is combined more closely; wherein, the spacing 4 inner walls of pipe and the sampling tube 5 outer wall of sample closely laminate through the mode of inscribe, can effectively avoid soil sample to get into the space between spacing 4 inner walls of pipe and the sampling tube 5 outer wall of sample, be favorable to keeping the clean of spacing 4 inner walls of pipe and the sampling tube 5 outer wall of sample for a long time, also be favorable to avoiding sampling tube 5 position in the soil sampling to take place the skew, make clear and definite user's the target of fetching soil, improve the stability of fetching soil.

In order to further improve the stability of borrowing, in an example, can form the fixed part at the one end tip of sampling spacing pipe 4 along pipe diameter direction horizontal extension, set up a plurality of fixed orificess in the fixed part, match in every fixed orificess and have the fastener. In another example, the end of the fixing portion extends axially along the sampling limiting tube 4 to form an insertion projection. Therefore, before taking the soil, the sampling limit pipe 4 can be erected on the soil body, and then a certain rotating acting force is applied to the sampling limit pipe 4, so that the bottom of the sampling limit pipe can extend into the soil body to a certain depth; for the sampling limit pipe 4 with a plurality of fixing holes at the fixing part, the fixing part can stay on the surface layer of the soil body, and then the soil body is pricked by a fastener through the fixing holes on the fixing part, so that the sampling limit pipe 4 is tightly attached to the soil body, and the shaking, falling or sinking can not occur; for the sampling limit pipe 4 with the insertion convex part formed at the end part of the fixing part, the insertion convex part can be inserted into the soil body by applying acting force to the sampling limit pipe 4, and then the sampling limit pipe 4 can stably stand on the soil body. Therefore, when the handle 1 applies force to push the driving rod 2 and the sampling tube 5 to be pricked into the soil body for soil sampling, the sampling limit tube 4 can still be firmly and stably fixed at the original position of the surface layer of the soil body, can not be displaced, and can not be pricked into the soil body together with the sampling tube 5 to cause large disturbance of the soil body. Through the setting of the fixed part of the spacing pipe 4 of sample, fixed orifices etc., improved the stability of fetching earth greatly, twist reverse the difficult rock of in-process sample cutting ring 51 downwards, the maintenance cutting ring center that can be fine is stable, prevents effectively that sample cutting ring 51 from taking place the skew.

In an embodiment, including the embodiment of the spacing pipe 4 of sample based on soil sample sampler, in order to realize taking a sample fast not the soil sample of co-altitude, 2 outer walls of actuating lever are equipped with the scale, and is concrete, and the scale on 2 outer walls of actuating lever sets up along 2 length direction of actuating lever. In this embodiment, to facilitate the reading of the scale, the scale of the driving lever 2 closer to the end of the handle 1 is larger, and the scale closer to the end of the sampling tube 5 is smaller. The scale on the driving rod 2 corresponds to the height of the soil sample in the sampling tube 5; when the sampling tube 5 is inserted into the sampling limit tube 4 fixed on the soil body and the bottom of the sampling tube 5 just contacts the soil body, the scale of the top end of the sampling limit tube 4 on the driving rod 2 can be recorded first, and the scale is recorded as an initial scale value to indicate the scale value when no soil sample exists in the sampling tube 5. When the handle 1 drives the driving rod 2 to rotate to drive the sampling tube 5 to move downwards gradually towards the soil body, the driving rod 2 also moves downwards along with the downward movement of the sampling tube 5, and the downward movement distance of the driving rod 2 indicates the height of the soil sample entering the sampling tube 5. In the process of moving the driving rod 2 downwards, the height of the obtained soil sample can be known by looking at the current scale value of the top end of the sampling limit tube 4 on the driving rod 2, wherein the height of the soil sample is equal to the difference between the current scale value and the initial scale value. Therefore, in the using process, a user can know the height of the soil sample obtained in the sampler by watching the scale change on the outer wall of the driving rod 2 corresponding to the top end of the sampling limit tube 4.

In one embodiment, in order to improve the stability of soil sampling, a slope angle may be further provided on the outer wall of the end portion of one end of the sampling limit tube 4. Through sharp-pointed slope angle, the spacing pipe 4 of sample can suitably insert the soil body top layer, links closely with the soil body closely and detains, is difficult for taking place to rock, and the slope angle is sharp thin, can effectively reduce the area of sampler and soil body contact, reduces the pressure that the soil body bore, reduces the experimental data error that causes because the disturbance of soil sample before the experiment.

In order to ensure the original structure of the soil sample, in an embodiment, the outer wall of the sampling knife ring is provided with a slope angle. Set up the slope angle through the sample sword ring, can be so that at the in-process of fetching earth, reduce the resistance that sampling tube 5 entered into the soil body, and then reduce the disturbance that the process of fetching earth caused the soil sample, reduced the experimental data error that causes because the disturbance of soil sample before the experiment.

In one embodiment, the outer wall of the bulldozer head 6 is cylindrical. From this, bulldoze head 6 and sampling tube 5 can closely laminate, can effectively avoid unloading the soil in-process, and partial soil sample gets into the space between 6 outer walls of bulldozing head and the 5 inner walls of sampling tube, is favorable to guaranteeing the integrality of soil sample.

In one embodiment, the handle 1 is detachably mounted to the handle attachment end of the drive rod 2. Through the detachable setting of handle 1 and actuating lever 2, not only easily daily dismantlement, washing and change make soil sample sampler can be disassembled into several parts that the volume is less moreover, conveniently carry and accomodate.

In one embodiment, the handle 1 is provided with a screw hole, and the periphery of the handle connecting end of the driving rod 2 is provided with an external thread screwed with the screw hole of the handle 1.

It should be noted that, in the case of conflict, various technical features in the embodiments and examples of the present invention may be combined with each other as long as there is no conflict or contradiction in the combination between the features, but the present invention is limited by the space and is not described one by one.

The present invention is not limited to the above embodiment, and various modifications and variations of the present invention are intended to be included within the scope of the claims and the equivalent technology if they do not depart from the spirit and scope of the present invention.

Claims (10)

1. A soil sample sampler is characterized by comprising a driving rod, a handle, a sampling joint, a sampling tube and a soil pushing head; one end of the driving rod is a handle connecting end, and the other end of the driving rod is a joint end; the handle is arranged at the handle connecting end of the driving rod; the sampling joint is detachably connected with the joint end of the driving rod and one end of the sampling tube respectively during sampling and is detached from the driving rod and the sampling tube when a soil sample in the sampling tube is taken out; a sampling knife ring is arranged at the end part of the other end of the sampling tube; the bulldozing head is used for when pushing out the soil sample in the sampling tube, with the detachable connection of the connector end of actuating lever, and the external diameter of bulldozing head is less than the internal diameter of sampling tube.

2. The soil sample sampler of claim 1, wherein the drive rod has an external thread on the outer periphery of the joint end; an inner thread is arranged on the inner wall of one end of the sampling tube, which is connected with the sampling joint; one end of the sampling joint is provided with a screw hole which is screwed with the external thread of the driving rod, and the periphery of the other end of the sampling joint is provided with an external thread which is screwed with the internal thread of the sampling tube; one end of the bulldozing head is provided with a screw hole which is screwed with the external thread of the driving rod.

3. The soil sample sampler of claim 2, wherein the sampling joint, the bulldozing head and the sampling tube are provided with a plurality of sampling tubes with different radial dimension specifications; the sampling connectors and the sampling tubes which are matched in size and specification are in one-to-one correspondence, and the bulldozing heads and the sampling tubes which are matched in size and specification are in one-to-one correspondence.

4. The soil sample sampler of claim 1, further comprising a sampling limit tube; the sampling limiting pipe is used for accommodating the sampling pipe during sampling, and the inner wall of the sampling limiting pipe is tightly attached to the outer wall of the sampling pipe when the sampling limiting pipe is accommodated.

5. The soil sample sampler of claim 4, wherein the outer wall of one end part of the sampling limit pipe is provided with a slope angle; or

One end part of the sampling limit pipe horizontally extends along the pipe diameter direction to form a fixing part; the fixed part is provided with a plurality of fixed holes, each fixed hole is matched with a fastener, or the end part of the fixed part extends along the axial direction of the sampling limit pipe to form an insertion convex part.

6. The soil sample sampler of claim 1, wherein the drive rod is graduated on the outer wall.

7. The soil sample sampler of claim 1, wherein the outer wall of the sampling cutter ring is provided with a bevel.

8. The soil sample sampler of claim 1, wherein the outer wall of the bulldozer head is of cylindrical configuration.

9. The soil sample sampler of claim 1, wherein the handle is removably mounted to the handle attachment end of the drive rod.

10. The soil sample sampler of claim 9, wherein the handle defines a threaded bore; and the periphery of the handle connecting end of the driving rod is provided with an external thread screwed with the screw hole of the handle.

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