Sampling device for soil measurement

Abstract

The utility model relates to the technical field of soil sampling, and discloses a sampling device for soil measurement, which comprises a sampling barrel and a pointing seat, the pointing seat sleeves the outer wall of the sampling barrel, and the pointing seat can slide on the sampling barrel along the height direction of the sampling barrel. The inserting end, facing the sampling barrel, of the pointing seat is provided with an abutting plane, the pointing seat is provided with a positioning piece, and the positioning piece is used for positioning the pointing seat on the sampling barrel. The precision of the soil sampling depth can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of soil sampling, and in particular to a sampling device for soil measurement. Background Art

[0002] In soil science research and agricultural practice, soil sampling is an important means to obtain soil information and measure soil. However, in existing soil sampling devices, the insertion depth of the sampling tube often depends on the operator's experience and feel, which makes it difficult to accurately control the sampling depth, and easily causes the sampling depth to be too deep or too shallow, so that the obtained soil samples cannot truly reflect the soil conditions of the target layer. Utility Model Content

[0003] In order to improve the accuracy of soil sampling depth, the present application provides a sampling device for soil measurement.

[0004] The present application provides a sampling device for soil measurement, which adopts the following technical solution:

[0005] A sampling device for soil measurement comprises a sampling tube and a pointing seat, wherein the pointing seat is sleeved on the outer wall of the sampling tube, the pointing seat can slide on the sampling tube along the height direction of the sampling tube, the pointing seat has an abutment plane facing the insertion end of the sampling tube, and the pointing seat has a positioning piece, and the positioning piece is used to position the pointing seat on the sampling tube.

[0006] By adopting the above technical solution, the position of the pointing seat is adjusted so that the pointing seat is positioned at a specified height of the sampling tube, and the sampling tube is inserted downward into the soil until the abutment plane abuts against the ground, so as to prompt the operator that the sampling tube has reached the specified position, thereby improving the accuracy of the soil sampling depth.

[0007] Optionally, the positioning member includes

[0008] A positioning seat, which slides in the pointing seat in a direction close to or away from the sampling tube, and can slide to be pressed against the sampling tube;

[0009] A gripping rod, one end of which is rotatably connected to the positioning seat, and the other end of which extends out of the pointing seat; and

[0010] A limiting portion, disposed on the gripping rod and protruding from a side wall of the gripping rod;

[0011] Among them, an active cavity for the positioning seat, the holding rod and the limiting part to move is opened in the pointing seat, and a limiting hole for the limiting part to pass through is opened on the outer wall of the pointing seat, and the limiting hole is connected with the active cavity; when the limiting part enters the active cavity, the positioning seat presses against the sampling tube, and the rotation of the holding rod can drive the limiting part to rotate to be misaligned with the limiting hole.

[0012] By adopting the above technical solution, the limiting part is driven to move into the movable cavity and rotate to be misaligned with the limiting hole, so that the limiting part abuts against the inner cavity wall of the pointing seat, so that the positioning seat includes a state of abutting against the sampling tube, so that the positioning seat and the sampling tube are relatively positioned to limit the movement of the pointing seat relative to the sampling tube.

[0013] Optionally, the positioning seat includes a hard layer and an elastic layer which are sequentially arranged along a direction close to the sampling tube. When the limiting portion enters the active cavity, the elastic layer presses against the sampling tube and is squeezed and deformed.

[0014] By adopting the above technical solution, the friction between the positioning seat and the sampling tube can be increased by the elastic layer pressing against the sampling tube and deforming.

[0015] Optionally, a protrusion is provided on the hard layer, and the pointing seat has a sliding groove on the wall of the active cavity for the protrusion to slide, and the sliding groove extends along a straight line.

[0016] By adopting the above technical solution, the cooperation between the protrusion and the slide groove can guide the movement of the positioning seat, so that the positioning seat is not easy to rotate together with the holding rod, so as to improve the stability of the positioning seat.

[0017] Optionally, one end of the pointing seat away from the insertion end of the sampling tube is expanded in a direction away from the insertion end of the sampling tube.

[0018] By adopting the above technical solution, the expansion of the end of the pointing seat away from the sampling tube can guide the pointing seat to be sleeved from the insertion end of the sampling tube to the sampling tube.

[0019] Optionally, the outer wall of the sampling tube is provided with scale lines along its own height direction.

[0020] By adopting the above technical solution, the scale line is helpful to quickly determine the position of the pointing seat.

[0021] Optionally, the sampling cylinder includes a main cylinder and a side cover, and a sampling port connecting the outside of the main cylinder and the inner cavity is opened on the side of the main cylinder, and the sampling port extends along the height direction of the main cylinder and is provided for the side cover to be inserted into. When the side cover is inserted into the main cylinder, the pointing seat can simultaneously enclose the main cylinder and the side cover to limit the side cover from being separated from the main cylinder.

[0022] By adopting the above technical solution, the pointing seat is removed from the sampling tube, so that the side cover can be removed from the main tube, so that the sampling port is exposed, that is, the soil in the main tube can be taken out from the sampling port.

[0023] Optionally, the sampling device further comprises a drill barrel, which is detachably connected to the insertion end of the sampling barrel and communicates with the sampling barrel, and one end of the drill barrel away from the sampling barrel is toothed.

[0024] By adopting the above technical solution, the toothed drill tube can improve the convenience of inserting the sampling tube downward into the soil, and the drill tube can be detachably connected to facilitate maintenance and replacement of the drill tube.

[0025] Optionally, the sampling device further comprises a driving mechanism, the sampling cylinder is connected to the driving mechanism, and the driving mechanism provides power for the sampling cylinder to rotate.

[0026] By adopting the above technical solution, the driving mechanism drives the sampling tube to rotate when it is inserted into the soil, so as to improve the convenience of inserting the sampling tube downward into the soil.

[0027] In summary, the present application includes at least one of the following beneficial effects:

[0028] 1. The pointing seat is positioned by moving it to the designated position on the sampling tube, so that when the sampling tube reaches the designated depth when extending downward into the soil layer for sampling, the pointing seat abuts against the ground to indicate the position of the sampling tube, thereby improving the accuracy of soil sampling depth;

[0029] 2. While the positioning piece positions the pointing seat, the pointing seat simultaneously surrounds the main tube and the side cover to limit the side cover from being separated from the main tube, so that the pointing seat positions the side cover, and the side cover can be removed from the main tube by removing the pointing seat from the main tube, thereby improving the convenience of loading and unloading the side cover;

[0030] 3. By making the drill tube detachably connected to the sampling tube, when the drill tube is damaged, only the drill tube needs to be replaced without replacing the sampling tube, and different drill tubes can be replaced for different soil types to improve the adaptability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application;

[0032] Figure 2 It is a schematic diagram of the explosion structure of the main barrel and the drill barrel in the embodiment of the present application;

[0033] Figure 3 It is a schematic diagram of the main barrel explosion structure in the embodiment of the present application;

[0034] Figure 4 yes Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0035] Figure 5 It is a cross-sectional view of the pointing seat in the embodiment of the present application.

[0036] Explanation of the reference numerals: 1. sampling cylinder; 101. main cylinder; 102. side cover; 2. pointing seat; 3. positioning piece; 31. positioning seat; 311. hard layer; 312. elastic layer; 32. holding rod; 33. limiting portion; 4. movable cavity; 5. limiting hole; 6. protrusion; 7. slide groove; 8. scale line; 9. sampling port; 10. drill tube; 11. driving mechanism; 111. base; 112. motor; 113. handle; 12. shallow groove; 13. extension portion; 14. annular protrusion; 15. annular groove; 16. movable cavity; 17. through hole. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-5 This application is described in further detail.

[0038] The present application embodiment discloses a sampling device for soil measurement. Figure 1 The sampling device for soil measurement includes a driving mechanism 11, a sampling tube 1, a pointing seat 2 and a drill tube 10. The sampling tube 1 is connected to the driving mechanism 11, the pointing seat 2 is installed on the sampling tube 1, and the drill tube 10 is detachably connected to the insertion end of the sampling tube 1.

[0039] The driving mechanism 11 includes a base 111, a motor 112 and a handle 113. The motor 112 is mounted on the base 111, and the sampling tube 1 is detachably connected to the output end of the motor 112, so that the motor 112 can drive the sampling tube 1 to rotate. The handle 113 is mounted on the base 111 for the operator to hold.

[0040] Reference Figure 1 and Figure 2 The sampling tube 1 includes a main tube 101 and a side cover 102. The main tube 101 is cylindrical. The top of the main tube 101 is coaxially connected to the output end of the motor 112 through a flange and bolts. The bottom of the main tube 101 is an insertion end for inserting into the soil. A sampling port 9 is provided on the side wall of the main tube 101 along the axis of the main tube 101. The sampling port 9 is in a long strip shape and connects the outside of the main tube 101 with the inner cavity of the main tube 101. The sampling port 9 does not penetrate the two ends of the main tube 101 that are far away from each other.

[0041] Reference Figure 2 and Figure 3The side cover 102 is in the shape of an arc plate adapted to the sampling port 9. The side cover 102 can be coaxially embedded in the sampling port 9 of the main cylinder 101 to close the sampling port 9, and the side cover 102 and the main cylinder 101 together form a complete cylinder. Specifically, a shallow groove 12 is opened along its own circumference at the edge of the side cover 102, and the main cylinder 101 is integrally formed with an extension part 13 along the inner circumferential wall of the sampling port 9 at the sampling port 9. The side cover 102 is embedded in the sampling port 9 so that the extension part 13 is pressed into the shallow groove 12 to limit the side cover 102 from continuing to move into the inner cavity of the main cylinder 101.

[0042] The drill tube 10 is cylindrical with both ends penetrated, and the outer diameter of the drill tube 10 is consistent with the outer diameter of the main tube 101. An annular protrusion 14 coaxial with the drill tube 10 is integrally formed at one end of the drill tube 10, and the other end of the drill tube 10 opposite is toothed along its own circumference. An annular groove 15 for the annular protrusion 14 to press into is provided on the inner wall of the insertion end of the main tube 101. The drill tube 10 and the main tube 101 are coaxially pressed against each other by pressing the annular protrusion 14 into the annular groove 15, and then the main tube 101 and the drill tube 10 are connected by countersunk bolts, so that the drill tube 10 is positioned relative to the main tube 101, and the toothed end of the drill tube 10 is arranged downward.

[0043] Reference Figure 4 The pointing seat 2 is annular, and a moving cavity 16 is provided in the middle of the pointing seat 2 for sleeve and sliding on the outer wall of the main cylinder 101. The pointing seat 2 is coaxial with the main cylinder 101, and a contact plane is formed on the side of the pointing seat 2 close to the insertion end of the main cylinder 101. When the side cover 102 is inserted into the main cylinder 101, the pointing seat 2 slides on the outer wall of the side cover 102 at the same time to limit the side cover 102 from being separated from the main cylinder 101.

[0044] Reference Figure 3 and Figure 4 , scale lines 8 are distributed on the outer wall of the main tube 101 along its own axial direction, and a positioning member 3 is provided on the pointing seat 2. The positioning member 3 cooperates with the main tube 101 so that the pointing seat 2 can be positioned on the main tube 101.

[0045] When sampling, first move the pointing seat 2 according to the depth of sampling required, make the contact plane of the pointing seat 2 flush with the corresponding scale, and then position the pointing seat 2. Then place the main cylinder 101 with the axis extending vertically, and the tooth shape of the drill cylinder 10 contacts the ground. The operator holds the device with the handle 113, and then starts the motor 112 to drive the main cylinder 101 to rotate and drill downward into the soil. When the contact plane of the pointing seat 2 contacts the ground, stop moving the main cylinder 101 downward, and lift the main cylinder 101 online, and the sampling is completed.

[0046] After sampling is completed, the pointing seat 2 is released from its position, and then the pointing seat 2 is removed from the insertion end of the main tube 101 , and then the side cover 102 is separated from the main tube 101 , so that the soil sample can be taken out from the sampling port 9 .

[0047] Reference Figure 4 and Figure 5 Specifically, there are two groups of positioning members 3, and the two groups of positioning members 3 are respectively installed on two opposite sides of the pointing seat 2. Each group of positioning members 3 includes a positioning seat 31, a holding rod 32 and a limiting portion 33.

[0048] The positioning seat 31 slides in the pointing seat 2 along the radial direction of the main cylinder 101. The pointing seat 2 is provided with an active cavity 4 for the positioning seat 31 to slide, and the active cavity 4 is connected with the moving cavity 16. The positioning seat 31 includes a hard layer 311 and an elastic layer 312. The hard layer 311 is made of hard metal, and the elastic layer 312 is made of elastic rubber. The hard layer 311 and the elastic layer 312 are sequentially distributed along the radial direction of the main cylinder 101, and the elastic layer 312 is fixed to the side of the hard layer 311 close to the main cylinder 101. The side of the elastic layer 312 facing the main cylinder 101 is in an arc shape with an inner diameter consistent with the outer diameter of the main cylinder 101, and the axis of the arc surface of the elastic layer 312 is parallel to the axis of the main cylinder 101.

[0049] The holding rod 32 is in the shape of a round rod, and one end of the holding rod 32 is rotatably connected to the side of the hard layer 311 away from the elastic layer 312. The end of the holding rod 32 away from the hard layer 311 is radially extended from the active cavity 4 along the main tube 101 to the pointing seat 2. A through hole 17 is opened on the outer wall of the pointing seat 2, which is connected to the active cavity 4 and for the holding rod 32 to pass through.

[0050] The limiting portion 33 is integrally formed on the side wall of the gripping rod 32 and is in the shape of a rod perpendicular to the gripping rod 32. The two ends of the limiting portion 33 that are far from each other protrude from the opposite sides of the gripping rod 32. A limiting hole 5 that is connected to the active cavity 4 is provided on the outer wall of the pointing seat 2 at the inner wall of the through hole 17. The limiting hole 5 cooperates with the limiting portion 33 to allow the limiting portion 33 to move into or out of the active cavity 4. The extension length of the limiting portion 33 is smaller than the extension length and width of the positioning seat 31. When the limiting portion 33 moves into the active cavity 4, the rotation of the gripping rod 32 can drive the limiting portion 33 to rotate in the active cavity 4.

[0051] Reference Figure 4 and Figure 5 When the holding rod 32 moves away from the main cylinder 101 until the hard layer 311 abuts against the cavity wall of the pointing seat 2 on the side of the active cavity 4 away from the main cylinder 101, the elastic layer 312 is separated from the outer wall of the main cylinder 101, and the limiting portion 33 is located outside the pointing seat 2. At this time, the pointing seat 2 can be moved on the main cylinder 101 to adjust the position of the pointing seat 2.

[0052] When the gripping rod 32 moves toward the main tube 101 until the limiting portion 33 enters the active cavity 4 through the limiting hole 5, the elastic layer 312 abuts against and fits the outer wall of the main tube 101, and the elastic layer 312 is squeezed and deformed, and then the gripping rod 32 is rotated to drive the limiting portion 33 to rotate to be misaligned with the limiting hole 5, so that the limiting portion 33 abuts against the cavity wall of the pointing seat 2 on the side of the active cavity 4 away from the main tube 101, so that the elastic layer 312 remains in a state of abutting against the outer wall of the main tube 101, so as to limit the movement of the positioning seat 31 relative to the main tube 101, and position the pointing seat 2 relative to the main tube 101. In order to facilitate the assembly of the pointing seat 2 and the positioning seat 31, the pointing seat 2 is spliced ​​in half.

[0053] Reference Figure 5 Furthermore, a protruding portion 6 protruding upward is integrally formed on the top of the hard layer 311. The protruding portion 6 is in a square shape, and a slide groove 7 for the protruding portion 6 to slide is provided on the inner wall of the active cavity 4 of the pointing seat 2. The slide groove 7 extends radially along the main cylinder 101. When the holding rod 32 drives the positioning seat 31 to move radially along the main cylinder 101, the protruding portion 6 moves synchronously in the slide groove 7 to guide the movement of the positioning seat 31, and when the holding rod 32 rotates, the positioning seat 31 is restricted from rotating, so that the arc surface of the elastic layer 312 in the positioning seat 31 always keeps the axis parallel to the axis of the main cylinder 101, so as to improve the stability of the positioning seat 31.

[0054] Furthermore, the inner diameter of the movable cavity 16 at one end of the pointing seat 2 is consistent with the outer diameter of the main cylinder 101, and the positioning seat 31 moves in this end of the pointing seat 2. The inner diameter of the movable cavity 16 at the other end of the pointing seat 2 gradually increases in the direction close to the end to form a flared shape. When the pointing seat 2 is sleeved with the main cylinder 101, the flared end of the pointing seat 2 is directed toward the main cylinder 101 and then sleeved with the main cylinder 101 to guide the process of sleeved on the main cylinder 101 of the pointing seat 2.

[0055] The implementation principle of a sampling device for soil measurement in an embodiment of the present application is as follows: before sampling, the pointing seat 2 is sleeved from the drill tube 10 to the main tube 101, and the pointing seat 2 is moved to the desired position, and then the holding rod 32 is moved to drive the limiting part 33 to move and abut against the movable cavity 4, so that the elastic layer 312 of the positioning seat 31 is tightly pressed against the outer wall of the main tube 101.

[0056] When sampling, the motor 112 is started to drive the main cylinder 101 to rotate, so that the drill tube 10 drills downward into the soil layer. The main cylinder 101 stops moving downward when the pointing seat 2 contacts the ground, and then moves upward out of the main cylinder 101.

[0057] After the main cylinder 101 is taken out from the soil layer, first move the holding rod 32 to bring the limiting part 33 out of the pointing seat 2 to separate the positioning seat 31 from the main cylinder 101, then slide the pointing seat 2 away from the main cylinder 101 from one end of the drill tube 10, and then remove the side cover 102 from the main cylinder 101, and take out the soil sample through the sampling port 9.

[0058] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A sampling device for soil measurement, characterized in that: include: A sampling barrel (1) and a pointing seat (2), wherein the pointing seat (2) is sleeved on the outer wall of the sampling barrel (1), the pointing seat (2) can slide on the sampling barrel (1) along the height direction of the sampling barrel (1), the pointing seat (2) has an abutment plane facing the insertion end of the sampling barrel (1), and the pointing seat (2) has a positioning member (3), and the positioning member (3) is used to position the pointing seat (2) on the sampling barrel (1).

2. A sampling device for soil measurement according to claim 1, characterized in that: The positioning member (3) comprises The positioning seat (31) slides in the pointing seat (2) in a direction approaching or moving away from the sampling tube (1), and can slide to abut against the sampling tube (1); A holding rod (32), one end of which is rotatably connected to the positioning seat (31), and the other end of which extends out of the pointing seat (2); and A limiting portion (33) is arranged on the holding rod (32) and protrudes from a side wall of the holding rod (32); The pointing seat (2) is provided with an active cavity (4) for the positioning seat (31), the holding rod (32) and the limiting portion (33) to move, and the outer wall of the pointing seat (2) is provided with a limiting hole (5) for the limiting portion (33) to pass through, and the limiting hole (5) is communicated with the active cavity (4); when the limiting portion (33) enters the active cavity (4), the positioning seat (31) is pressed against the sampling tube (1), and the rotation of the holding rod (32) can drive the limiting portion (33) to rotate to be misaligned with the limiting hole (5).

3. A sampling device for soil measurement according to claim 2, characterized in that: The positioning seat (31) comprises a hard layer (311) and an elastic layer (312) which are arranged in sequence along a direction close to the sampling tube (1); when the limiting portion (33) enters the active cavity (4), the elastic layer (312) presses against the sampling tube (1) and is deformed by compression.

4. A sampling device for soil measurement according to claim 3, characterized in that: The hard layer (311) is provided with a protruding portion (6), and the pointing seat (2) has a sliding groove (7) on the wall of the active cavity (4) for the protruding portion (6) to slide, and the sliding groove (7) extends along a straight line.

5. A sampling device for soil measurement according to any one of claims 1 to 4, characterized in that: An end of the pointing seat (2) away from the insertion end of the sampling tube (1) is expanded in a direction away from the insertion end of the sampling tube (1).

6. A sampling device for soil measurement according to any one of claims 1 to 4, characterized in that: The outer wall of the sampling tube (1) is provided with scale lines (8) along its own height direction.

7. A sampling device for soil measurement according to any one of claims 1 to 4, characterized in that: The sampling cylinder (1) comprises a main cylinder (101) and a side cover (102); a sampling port (9) is provided on the side of the main cylinder (101) for connecting the outside of the main cylinder (101) with the inner cavity; the sampling port (9) extends along the height direction of the main cylinder (101) and is provided for the side cover (102) to be inserted into; when the side cover (102) is inserted into the main cylinder (101), the pointing seat (2) can simultaneously enclose the main cylinder (101) and the side cover (102) to prevent the side cover (102) from being separated from the main cylinder (101).

8. A sampling device for soil measurement according to any one of claims 1 to 4, characterized in that: The sampling device further comprises a drill tube (10), the drill tube (10) being detachably connected to the insertion end of the sampling tube (1) and being in communication with the sampling tube (1), and the end of the drill tube (10) away from the sampling tube (1) being toothed.

9. A sampling device for soil measurement according to any one of claims 1 to 4, characterized in that: The sampling device further comprises a driving mechanism (11), the sampling cylinder (1) being connected to the driving mechanism (11), and the driving mechanism (11) providing power for the sampling cylinder (1) to rotate.

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