Undisturbed soil sampling device

Abstract

The utility model relates to the technical field of soil sampling, and provides an undisturbed soil sampling device which comprises a mounting plate and a sampler which is arranged on one side of the mounting plate and is of a split structure, and a chamfer is arranged on the side edge of one end of the sampler. The pushing mechanism pushes the sampler to move, so that the sampler is inserted into the soil layer under the action of the chamfer, meanwhile, the sample protection shell is inserted into the soil layer along with the movement of the sampler, soil enters the sample protection shell to complete sampling, then the sampler is taken out, the sampler is disassembled, the shell is moved to open the sampler, and redundant soil at the two ends of the sample protection shell is cut off. The sample is completely retained in the sample protection shell, so that the effect of completely taking out and retaining the undisturbed soil sample is achieved, and the sampling effect of the undisturbed soil and the protection and integrity of the sample are effectively improved.

Description

Technical Field

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

[0002] Undisturbed soil, usually also called undisturbed soil sample, is a soil sample that maintains the natural water content and natural structure. It is used to measure indexes such as the unit weight of soil, natural void ratio, compression coefficient and shear strength. The methods of taking soil usually adopt the pressing method, the driving method and the rotary driving method.

[0003] The known authorized patent with the application number: CN202222883141.5 discloses an undisturbed soil sampling device. Its background art proposes the problems that "most of the existing undisturbed soil sampling devices on the market are not convenient to adjust the soil at different depths during use, and the soil sampler is large in volume and not convenient for operators to carry when going out; most of the existing undisturbed soil sampling devices on the market are not convenient to pierce the soil during use, while the screw sampler that is convenient to pierce cannot ensure sampling in the original soil state, and the internal structure is fractured by personnel, resulting in incomplete sampling". For this reason, the technical solution of this scheme to solve this problem is "including a soil sampling frame, a connecting sleeve and an insertion plate. An internal thread is provided inside the soil sampling frame, and a connecting sleeve is arranged inside the internal thread. A second thread is provided on the outer wall of the connecting sleeve, and the outer wall of the second thread meshes with the inner wall of the internal thread" and so on.

[0004] However, it is found in the implementation of the related technology that the above technical solution has the following problems: Although it realizes the effects of sampling soil at different depths and facilitating piercing the soil through the provided technical solution, it is not convenient to effectively guarantee the structural integrity of the undisturbed soil sample during use. It discharges the sampled soil by means of extrusion and pushing, which is easy to damage the soil sample during the soil pushing process, and it is easy for some soil to fall or scatter from the opening, resulting in a reduction in the undisturbed soil sampling effect and the integrity of the sample. Summary of the Utility Model

[0005] The utility model provides an undisturbed soil sampling device, which solves the problem of the inconvenience in effectively guaranteeing the structural integrity of the undisturbed soil sample in the related technology.

[0006] The technical solution of the utility model is as follows: An undisturbed soil sampling device, comprising: a mounting plate;

[0007] A sampling device which is arranged on one side of the mounting plate and has a split structure, and a chamfer is arranged on one side of one end of the sampling device;

[0008] A sample protection shell arranged inside the sampling device, which is formed by bending and butt-jointing thin steel strips, and the sample can be taken out by opening it;

[0009] and a pushing mechanism which is arranged on the mounting plate and detachably connected to the sampler. The sampler can be moved by the pushing mechanism to extend into or out of the soil layer.

[0010] Furthermore, the sampler comprises:

[0011] Two symmetrically arranged shells, wherein the top ends of the shell located on the lower side are provided with slots, and the chamfers are provided at one end of the two shells;

[0012] Card blocks fixedly mounted at both ends of the bottom of the other housing and engaged with the card slots;

[0013] and a half stud fixedly connected to the other ends of the two shells.

[0014] Furthermore, the pushing mechanism includes:

[0015] A jack fixedly mounted on one side of the mounting plate;

[0016] A connecting nut that is fixedly connected to the output end of the jack and threadedly connected to the two halves of the stud;

[0017] And a resistance component is arranged on the other side of the mounting plate and is used to make the jack contact with the outside world.

[0018] The conflicting components include:

[0019] A U-shaped seat fixedly mounted on the other side of the mounting plate;

[0020] A sleeve hinged in the U-shaped seat;

[0021] An adjusting rod is inserted into the sleeve and has a plurality of pin holes formed on its surface;

[0022] a backing plate fixedly connected to one end of the adjusting rod;

[0023] A hand-tightened bolt that is threaded through the sleeve and contacts the adjusting rod;

[0024] And a pin rod inserted in the pin hole.

[0025] Furthermore, a handle for holding the jack is fixedly mounted on the surface of the jack.

[0026] Furthermore, exhaust holes are provided at the corners of one end surface of the two shells, and one end surface of one shell is rotatably connected to an iron ring through a rotating shaft.

[0027] Furthermore, both ends of the sample protection shell are sleeved with end covers.

[0028] The working principle and beneficial effects of the utility model are as follows:

[0029] 1. When sampling, the device is fixed horizontally in the sampling pit, and the sampler is pushed by the pushing mechanism to move, so that the sampler is inserted into the soil layer under the action of the chamfer, and the sample protection shell is inserted into the soil layer as the sampler moves. At this time, the soil enters the sample protection shell to complete the sampling. The sampler is then taken out by the pushing mechanism, and the sampler is disassembled at the same time. The shell is moved to separate the card block from the card slot to open the sampler, and the excess soil at both ends of the sample protection shell is cut off, so that the sample is completely retained in the sample protection shell. Therefore, the effect of completely removing and retaining the original soil sample is achieved, avoiding the situation where the sample is easily damaged and dropped and lost during discharge, effectively improving the sampling effect of the original soil and the integrity of the sample as well as the accuracy of subsequent analysis.

[0030] 2. After the soil is collected and the sample protective shell is taken out, the end caps are put on both ends of the sample protective shell to facilitate the transfer of the sample in the sample protective shell, avoiding the sample from falling during the transfer process, and further enhancing the protection and integrity of the sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0032] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the utility model;

[0033] Figure 2 This is a schematic diagram of the cross-sectional three-dimensional structure of the sampler of the utility model;

[0034] Figure 3 This is a schematic diagram of the partial three-dimensional structure of the semicircular shell of the utility model;

[0035] Figure 4 This is a schematic diagram of the partial three-dimensional structure of the jack of the utility model;

[0036] Figure 5 This is a schematic diagram of the partial three-dimensional structure of the sample protective shell of the utility model;

[0037] In the figure: 1. Mounting plate; 2. Sampler; 3. Sample protection shell; 4. Half stud; 5. Chamfer; 6. Shell; 7. Slot; 8. Block; 9. Jack; 10. Connecting nut; 11. U-shaped seat; 12. Sleeve; 13. Adjusting rod; 14. Pad; 15. Thumb bolt; 16. Exhaust hole; 17. Handle; 18. End cover; 19. Iron ring; 20. Pin rod. DETAILED DESCRIPTION

[0038] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

[0039] Embodiment 1

[0040] Please refer to Figure 1 - Figure 5 , a device for taking undisturbed soil provided by the present utility model includes: a mounting plate 1;

[0041] A sampler 2 provided on one side of the mounting plate 1 and having a split structure, and a chamfer 5 is provided on one side of one end of the sampler 2;

[0042] A sample protection shell 3 provided in the sampler 2, the sample protection shell 3 is formed by bending and butt-jointing thin steel strips, and the sample can be taken out by opening it;

[0043] And a pushing mechanism provided on the mounting plate 1 and detachably connected to the sampler 2, and the sampler 2 can be moved through the pushing mechanism to extend into or out of the soil layer.

[0044] The sampler 2 includes:

[0045] Two symmetrically arranged shells 6, wherein, at both ends of the top of one shell 6 located at the lower side, card slots 7 are provided, and the chamfer 5 is provided at one end of the two shells 6;

[0046] A clamping block 8 fixedly installed at both ends of the bottom of the other shell 6 and engaged with the card slot 7;

[0047] And a half stud 4 fixedly connected to the other ends of the two shells 6.

[0048] The technical solution provided by this embodiment is as follows: when sampling, a sampling pit should be dug out by an excavator first, and then the device should be placed horizontally in the sampling pit, so that the sampler 2 and the pushing mechanism can easily conflict with the two sides of the inner wall of the sampling pit, so as to achieve the effect of fixing the device. The sampler 2 is then pushed to move by the pushing mechanism, so that the sampler 2 is inserted into the soil layer under the action of the chamfer 5, and the sample protection shell 3 is inserted into the soil layer as the sampler 2 moves. At this time, the soil enters the sample protection shell 3 to complete the sampling, and then the sampler 2 is taken out by the pushing mechanism, and the sampler is disassembled at the same time. 2 is separated from the pushing mechanism, and the shell 6 is moved to separate the card block 8 from the card slot 7 to open the sampler 2, and the excess soil at both ends of the sample protection shell 3 is cut off, so that the sample is completely retained in the sample protection shell 3. When transported to the experimental detection position, the sample protection shell 3 can be opened to take out the sample. Therefore, the effect of completely taking out and retaining the original soil sample is achieved, and the situation that the sample is easily damaged and dropped and lost during discharge is avoided, which effectively improves the sampling effect of the original soil and the protection and integrity of the sample, which is conducive to enhancing the accuracy of subsequent analysis.

[0049] Preferably: the pushing mechanism includes:

[0050] A jack 9 fixedly mounted on one side of the mounting plate 1;

[0051] A connecting nut 10 fixedly connected to the output end of the jack 9 and threadedly connected to the two halves of the stud 4;

[0052] And a resistance component is provided on the other side of the mounting plate 1 for making the jack 9 contact with the outside world.

[0053] The conflicting parts include:

[0054] A U-shaped seat 11 fixedly mounted on the other side of the mounting plate 1;

[0055] A sleeve 12 hinged in the U-shaped seat 11;

[0056] An adjusting rod 13 is inserted into the sleeve 12 and has a plurality of pin holes formed on its surface.

[0057] A backing plate 14 fixedly connected to one end of the adjusting rod 13;

[0058] A hand-tightening bolt 15 is threadedly connected to the surface of the sleeve 12 and contacts the adjusting rod 13;

[0059] And a pin rod 20 is inserted into the pin hole.

[0060] Specifically, during sampling, rotate the sleeve 12 to the horizontal state, then place the device horizontally into the sampling pit, and bring the sampler 2 into contact with one side of the inner wall of the sampling pit. Then, pull out the pin rod 20 and loosen the hand-tightening bolt 15 to separate it from the adjusting rod 13, and move the adjusting rod 13 to adjust its length until the backing plate 14 abuts against the other side of the inner wall of the sampling pit. Then, insert the pin rod 20 into the corresponding pin hole, and at the same time, tighten the hand-tightening bolt 15 to fix the adjusting rod 13. By making the sampler 2 and the backing plate 14 abut against both sides of the inner wall of the sampling pit respectively, the device can be fixed in the sampling pit. Then, insert the crowbar into the jack 9, so that the jack 9 drives the sampler 2 to insert into the soil layer for sampling. After sampling, take out the pin rod 20 and loosen the hand-tightening bolt 15 to adjust the length of the adjusting rod 13, drive the backing plate 14 to separate from the sampling pit, and bend it into a vertical state. At the same time, insert the crowbar to drive the sampler 2 to be taken out of the soil layer. By clamping the wrench on the connecting nut 10 and turning the connecting nut 10, the jack 9 and the sampler 2 can be separated.

[0061] It should be noted that: the maximum rotation angle of the sleeve 12 is 90 degrees, that is, it changes from the vertical state to the horizontal state. In addition, the jack 9 is a manual type and can be extended or retracted with uniform pressure.

[0062] Preferably: a handle member 17 for holding the jack 9 is fixedly installed on the surface of the jack 9.

[0063] Exhaust holes 16 are provided at the corners of one end face of each of the two shells 6, and an iron ring 19 is rotatably connected to one end face of one shell 6 through a rotating shaft.

[0064] Specifically, by providing the exhaust holes 16, it is convenient to discharge the gas in the sampler 2 when the sampler 2 is inserted into the soil layer, and it is convenient for personnel to observe the sampling situation through the exhaust holes 16. By providing the handle member 17, it is convenient for personnel to carry the device. By providing the iron ring 19, when taking out the sampler 2, the crowbar can be inserted into the iron ring 19, and the sampler 2 can be taken out of the soil by using the lever principle. At the same time, the iron ring 19 can be rotated and adjusted to facilitate finding the force point.

[0065] Embodiment 2

[0066] Based on Embodiment 1, in this embodiment: end caps 18 are sleeved on both ends of the sample protection shell 3.

[0067] The technical solution provided in this embodiment is: after taking out the sample protection shell 3 after soil sampling, by sleeving the end caps 18 on both ends of the sample protection shell 3, it is convenient to transport the sample in the sample protection shell 3. Conversely, remove the end caps 18 and open the sample protection shell 3 to take out the sample, avoiding sample dropping during the process of transferring the sample, and further enhancing the protection, integrity and analysis accuracy of the sample.

[0068] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An undisturbed soil sampling device, characterized in that, include: Mounting plate (1); A sampler (2) is provided on one side of the mounting plate (1) and has a split structure, wherein a chamfer (5) is provided on one side of the sampler (2); A sample protection shell (3) is provided in the sampler (2), wherein the sample protection shell (3) is formed by bending and butting thin steel strips, and can be opened to take out the sample; And a pushing mechanism is provided on the mounting plate (1) and is detachably connected to the sampler (2); the sampler (2) can be moved by the pushing mechanism to extend into or out of the soil layer.

2. The in-situ soil sampling device according to claim 1, wherein, The sampler (2) comprises: Two symmetrically arranged housings (6), wherein a top end of one of the housings (6) located on the lower side is provided with a card slot (7), and the chamfer (5) is provided at one end of the two housings (6); A clamping block (8) fixedly mounted on both ends of the bottom of the other housing (6) and clamped to the clamping slot (7); and a half stud (4) fixedly connected to the other ends of the two shells (6).

3. The undisturbed soil sampling device according to claim 1, characterized in that, The driving mechanism includes: A jack (9) fixedly mounted on one side of the mounting plate (1); A connecting nut (10) fixedly connected to the output end of the jack (9) and threadedly connected to the two half studs (4); And a resistance component is provided on the other side of the mounting plate (1) and is used to make the jack (9) contact the outside world.

4. The in-situ soil sampling device according to claim 3, characterized in that, The conflicting components include: A U-shaped seat (11) fixedly mounted on the other side of the mounting plate (1); A sleeve (12) hingedly connected to the U-shaped seat (11); An adjusting rod (13) is inserted into the sleeve (12) and is movably connected thereto. A plurality of pin holes are formed on the surface of the adjusting rod (13); a backing plate (14) fixedly connected to one end of the adjusting rod (13); A hand-tightening bolt (15) is threadedly connected to the surface of the sleeve (12) and contacts the adjusting rod (13); And a pin rod (20) is inserted into the pin hole.

5. The in-situ soil sampling device according to claim 3, characterized in that, A handle (17) for holding the jack (9) is fixedly mounted on the surface of the jack (9).

6. The in-situ soil sampling device according to claim 2, characterized in that, An exhaust hole (16) is provided at the corner of one end surface of each of the two shells (6), and one end surface of one of the shells (6) is rotatably connected to an iron ring (19) via a rotating shaft.

7. The in-situ soil sampling device according to claim 1, characterized in that Both ends of the sample protection shell (3) are sleeved with end covers (18).

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