Multi-depth in-situ soil sampler

Abstract

The utility model relates to a multi-depth in-situ soil sampler, which belongs to the field of samplers and comprises an outer tube made of transparent materials, and a first transverse plate is fixed at the top of the outer tube. An inner pipe is arranged in the outer pipe, and a second transverse plate is fixed to the top of the inner pipe. Scale marks are vertically arranged on the tube wall of the outer tube, the scale mark 0 is arranged on the tube wall, and other scale marks are arranged below the scale mark 0; marking points are arranged on the outer wall of the inner pipe. When the mark point is as high as the 0 scale line, the lower surface of the outer tube is flush with the lower surface of the inner tube; an inserting groove is formed in the pipe wall of the inner pipe, and the inserting groove and the mark point are equal in height; a plurality of connecting holes are formed in the pipe wall of the outer pipe, and the connecting holes are located in the integral multiple equal height of the 10cm scale line; the sampler further comprises a limiting assembly, and the limiting assembly is connected into one connecting hole. The limiting assembly can be inserted into the inserting groove and limit movement of the inner pipe relative to the outer pipe. The sampler can be used for accurately sampling a soil sample with the integral multiple of the height of 10cm without visual inspection.

Description

Technical Field

[0001] The utility model belongs to the field of samplers, and in particular relates to a multi-depth in-situ soil sampler. Background Art

[0002] A soil sampler, also known as a soil drill, is a tool for soil sampling.

[0003] The soil drill currently on sale mainly includes a horizontally arranged handle, a vertically arranged connecting rod, and a sampling head at the end of the connecting rod. A piston rod is provided inside the connecting rod, and a bulldozer plug is provided at the end of the piston rod. The bulldozer plug is located in the sampling head.

[0004] When the soil drill is used to sample soil, the sampling head needs to be inserted into the soil. The scale on the sampling head can be used to roughly determine the depth of the sampling head inserted into the soil. The height of the soil sample is the depth of the sampling head inserted into the soil.

[0005] At present, when the soil drill is used, in most cases, the height of the soil sample is a specific integer, such as 10cm, 20cm, 30cm, and the height of these soil samples is an integer multiple of 10cm; in rare cases, for example, the height of soil samples such as 12cm, 14cm, etc. are not an integer multiple of 10cm.

[0006] Whether sampling at a height that is an integer multiple of 10 cm or a non-integer multiple of 10 cm, operators using existing soil auger drills can only estimate the depth of the sampling head by eye. For example, an operator might imagine sampling at a height of 10 cm, but the actual sampling height might be 11 cm or 9.5 cm, resulting in significant deviations in sampling height. Utility Model Content

[0007] The utility model provides a multi-depth in-situ soil sampler which can ensure the accuracy of taking soil samples at a height that is an integer multiple of 10 cm as much as possible without affecting the taking of soil samples at a height that is not an integer multiple of 10 cm.

[0008] The utility model discloses a multi-depth in-situ soil sampler, comprising an outer tube, the outer tube being made of a transparent material, the axis of the outer tube being arranged vertically, and a first horizontal plate being fixed on the top of the outer tube for blocking the opening at the top of the outer tube; an inner tube being arranged in the outer tube, the axis of the inner tube being arranged vertically, and a second horizontal plate being fixed on the top of the inner tube for blocking the opening at the top of the inner tube; the second horizontal plate and the inner tube being movably clamped on the inner wall of the inner tube as a whole, and the whole being able to slide vertically relative to the outer tube;

[0009] The outer tube is provided with scale lines vertically along the wall thereof, with the 0 scale line being at the top and the other scale lines being below the 0 scale line; a marking point is provided on the outer wall of the inner tube; when the marking point is at the same height as the 0 scale line, the lower surface of the outer tube is flush with the lower surface of the inner tube;

[0010] A slot is provided on the wall of the inner tube, and the slot is at the same height as the marking point; a plurality of connection holes are provided on the wall of the outer tube, and each connection hole is located at a height that is an integer multiple of the 10 cm scale line;

[0011] The sampler also includes a limiting component connected to one of the connecting holes; when the second transverse plate and the inner tube move downward relative to the outer tube as a whole, the limiting component can be inserted into the slot and limit the movement of the inner tube relative to the outer tube.

[0012] When the restriction assembly is connected to one of the connection holes, if the inner tube moves downward relative to the outer tube, the restriction assembly will be inserted into the slot if and only if the slot and the corresponding restriction assembly are at the same height, thereby restricting the inner tube from further movement relative to the outer tube. Because the connection holes are all set at heights that are integer multiples of 10 cm, the downward movement of the inner tube is always an integer multiple of 10 cm, and the height of the soil sample is also an integer multiple of 10 cm. Compared to visually observing the position of the marked point on the scale line, the combination of the restriction assembly and the slot can more accurately collect soil samples at heights that are integer multiples of 10 cm.

[0013] Furthermore, the restriction component includes:

[0014] The connecting block is T-shaped when viewed radially from the outer tube. The connecting block includes a rod section and a disc section. The rod section is threadedly connected to the corresponding connecting hole, and the disc section abuts against the outer wall of the outer tube.

[0015] The plug rod is movably mounted on the connecting block and can slide relative to the connecting block. The end of the plug rod facing the inner tube extends into the outer tube, and the end of the plug rod abuts against the outer wall of the inner tube. The end of the plug rod away from the inner tube passes through the disc section.

[0016] The abutment plate is fixed to the end of the insertion rod away from the inner tube;

[0017] The spring is sleeved on the insertion rod; the spring is located between the disc section and the abutment disc, with both ends of the spring fixedly connected to the disc section and the abutment disc respectively, and the spring is in an extended state.

[0018] A restriction assembly with a simple structure adopts a rod segment and a connecting hole threaded connection, which facilitates the disassembly and assembly of the entire restriction assembly from the corresponding connecting hole and enables timely replacement of the connection position of the restriction assembly.

[0019] Furthermore, a mounting block is fixed to the upper surface of the second horizontal plate, a threaded hole is opened on the first horizontal plate, a threaded rod is threadedly connected to the threaded hole, the axis of the threaded rod is arranged vertically, and the non-threaded area at the lower end of the threaded rod is rotatably connected to the mounting block; two handle rods are fixed to the top of the threaded rod, and the axes of the two handle rods are arranged along the radial direction of the threaded rod. When observed from the axis of the threaded rod, the axes of the two handle rods are 180 degrees apart.

[0020] The inner tube can be driven to move vertically relative to the outer tube relatively simply by relying on the design of the threaded rod and the mounting block.

[0021] Furthermore, a push rod is passed through the threaded rod, and the axis of the push rod is arranged vertically. The threaded rod, the mounting block and the second horizontal plate are jointly provided with a long hole for the push rod to pass through, and the push rod can move relative to the threaded rod along the long hole; the lower end of the push rod extends into the inner tube, and a push plate is fixed to the lower end of the push rod; the threaded rod extends from the upper end of the push rod, and a grab rod is fixed to the upper end of the push rod, and the rotation of the threaded rod does not drive the push rod to rotate.

[0022] The push rod and push plate design can facilitate the pushing of soil samples from the inner tube for storage. The structure is simple.

[0023] Furthermore, the push plate is not sealed with the inner wall of the inner tube; the first transverse plate is provided with a second through hole, and the second transverse plate is provided with a first through hole.

[0024] This ensures that the air pressure in the inner and outer tubes maintains standard atmospheric pressure during sampling. If the first and second through holes are not provided, when the soil sample enters the inner tube, the pressure in the inner tube will be too high. After the soil sample is lifted from the ground, the excessive air pressure will push a small amount of the soil sample out of the inner tube, resulting in a small amount of loss of the soil sample in the inner tube and inaccurate sampling height.

[0025] Furthermore, a pressure plate is provided on the outer tube, a connecting sleeve is fixed on the pressure plate, the connecting sleeve is provided on the outer tube, the connecting sleeve is connected to the outer tube by bolts, and the lower surface of the pressure plate is flush with the lower surface of the outer tube.

[0026] The entire sampler will be more stable when placed on the ground. When applying downward force during sampling, the stability of the sampler will also make the entire sampling process more stable. Because it is stable, it is not easy to damage the soil sample, and the integrity of the soil sample can be more reasonably guaranteed. Beneficial effects

[0027] This solution incorporates a limiting component, which is set at multiples of 10 cm. When sampling soil samples at heights that are multiples of 10 cm, there is no need to visually observe the position of the marking point on the scale line. This ensures greater accuracy when sampling soil samples at multiples of 10 cm, compared to visually observing the position of the marking point. For soil samples at heights other than 10 cm, the marking point can still be visually estimated to be at the scale line. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a cross-sectional view of the sampler.

[0029] 1. Outer tube; 2. First horizontal plate; 3. Inner tube; 4. Second horizontal plate; 5. Mounting block; 6. Threaded hole; 7. Threaded rod; 8. Handle bar; 9. Push rod; 10. Push plate; 11. Grab bar; 12. First through hole; 13. Second through hole; 14. Marking point; 15. Connecting hole; 16. Connecting block; 17. Insert rod; 18. Abutment plate; 19. Spring; 20. Slot; 21. Pressure plate; 22. Connecting sleeve; 23. Bolt DETAILED DESCRIPTION

[0030] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0031] Example 1: A multi-depth in-situ soil sampler includes an outer tube 1. In this embodiment, the outer tube 1 is a circular tube with its axis arranged vertically. A first horizontal plate 2 is fixed to the top of the outer tube 1, and the first horizontal plate 2 seals the upper end opening of the outer tube 1.

[0032] An inner tube 3 is disposed within the outer tube 1. In this embodiment, the inner tube 3 is a circular tube, with its axis coinciding with the axis of the outer tube 1. A second transverse plate 4 is secured to the top of the outer tube 1, sealing the open upper end of the inner tube 3. The diameter of the second transverse plate 4 is greater than the outer diameter of the inner tube 3 and equal to its inner diameter. Therefore, the second transverse plate 4 and the inner tube 3 are movably secured to the inner wall of the inner tube 3 as a unit, allowing the unit to slide vertically relative to the inner wall of the outer tube 1.

[0033] A mounting block 5 is fixed to the upper surface of the second transverse plate 4 , and the mounting block 5 is located in the outer tube 1 .

[0034] A threaded hole 6 is vertically defined in the middle of the first horizontal plate 2. A threaded rod 7 is threadedly connected to the hole 6. The axis of the threaded rod 7 is vertically aligned. The lower, unthreaded portion of the threaded rod 7 is rotatably connected to the mounting block 5, allowing the threaded rod 7 to rotate about its axis relative to the mounting block 5. Two handle bars 8 are fixedly mounted to the top of the threaded rod 7. The axes of the two handle bars 8 are radially aligned with the threaded rod 7, and the axes of the two handle bars 8 are 180 degrees apart, as viewed from the axis of the threaded rod 7.

[0035] A push rod 9 is inserted into the threaded rod 7. The axis of the push rod 9 coincides with the axis of the threaded rod 7. The lower end of the push rod 9 passes through the second cross plate 4 and the mounting block 5 and extends into the inner tube 3. The threaded rod 7, the mounting block 5 and the second cross plate 4 are all provided with a long hole for the push rod 9 to slide. The outer wall of the push rod 9 does not contact the inner wall of the long hole, so the rotation of the threaded rod 7 does not drive the push rod 9 to rotate. A push plate 10 is fixed to the lower end of the push rod 9. The push plate 10 is not sealed against the inner wall of the inner tube 3.

[0036] The upper end of the push rod 9 extends out of the threaded rod 7, and the upper end of the push rod 9 is fixedly connected to the grab rod 11. The grab rod 11, the push rod 9 and the push plate 10 can slide vertically relative to the threaded rod 7 as a whole. Therefore, the push plate 10 slides downward relative to the inner wall of the inner tube 3.

[0037] A first through hole 12 is formed on the second transverse plate 4, and a second through hole 13 is formed on the first transverse plate 2. Due to the existence of the first through hole 12 and the second through hole 13, the interiors of the inner tube 3 and the outer tube 1 always maintain standard atmospheric pressure.

[0038] A marking point 14 is provided on the outer wall of the inner tube 3 .

[0039] The outer tube 1 is made of a transparent material. When viewed radially from the outer tube 1, the outer tube 1 is provided with scale lines, with the largest scale being 50 cm. The 0 scale line is at the top, and the other scale lines are below the 0 scale line.

[0040] Looking from the radial direction of the outer tube 1 , when the marking point 14 is at the same height as the 0 scale line, the lower end of the inner tube 3 is flush with the lower end of the outer tube 1 .

[0041] A plurality of connecting holes 15 are provided on the inner wall of the outer tube 1 along its axis. In this embodiment, there are five connecting holes 15 , and the axes of the connecting holes 15 are respectively set at the heights of the scale lines of 10 cm, 20 cm, 30 cm, 40 cm and 50 cm.

[0042] The invention also includes a limiting component for limiting the downward movement of the inner tube 3, and the limiting component includes:

[0043] The connecting block 16 is T-shaped when viewed from the radial direction of the outer tube 1 . The connecting block 16 includes a rod section and a disc section. The rod section is threadedly connected to a certain connecting hole 15 , and the disc section abuts against the outer wall of the outer tube 1 .

[0044] The insertion rod 17 is movably mounted on the connecting block 16 and can slide relative to the connecting block 16. In this embodiment, the insertion rod 17 is a round rod, and the axis of the insertion rod 17 coincides with the axis of the corresponding connecting hole 15. The connecting block 16 has a hole for the insertion rod 17 to pass through. The axis of the insertion rod 17 is arranged along the radial direction of the inner tube 3. The end of the insertion rod 17 facing the inner tube 3 extends from the connecting hole 15 into the outer tube 1 and can contact the outer wall of the inner tube 3. The insertion rod 17 cannot be detached from the connecting block 16.

[0045] The abutment disc 18 is fixed to the end of the insertion rod 17 away from the inner tube 3 . In this embodiment, the abutment disc 18 is a circular disc, and the axis of the abutment disc 18 coincides with the axis of the insertion rod 17 .

[0046] Spring 19 is sleeved on rod 17 and positioned between plate 18 and the plate segment. The ends of spring 19 are fixedly connected to plate 18 and the plate segment, respectively. Spring 19 is always in an extended state. Under the elastic force of spring 19, the end of rod 17 facing inner tube 3 is always in contact with the outer wall of inner tube 3.

[0047] Slot 20 is defined on the outer wall of inner tube 3. When inner tube 3 moves downward relative to outer tube 1, the corresponding end of insertion rod 17 can be inserted into slot 20. In this embodiment, slot 20 is circular. When viewed radially from outer tube 1, when marking point 14 is at the same height as the zero-scale line, the axis of slot 20 is at the same height as the zero-scale line.

[0048] Example 2: The difference from Example 1 is that in this embodiment, a pressure plate 21 is sleeved on the outer tube 1. In this embodiment, the pressure plate 21 is annular, with the axis of the pressure plate 21 coinciding with the axis of the inner tube 3. The lower surface of the pressure plate 21 is flush with the lower surface of the outer tube 1. A connecting sleeve 22 is fixedly connected to the upper surface of the pressure plate 21. The connecting sleeve 22 is annular and sleeved on the outer tube 1. The axis of the connecting sleeve 22 coincides with the axis of the pressure plate 21. Bolts 23 are passed through the connecting sleeve 22 and are threadedly connected to the outer tube 1. By removing the bolts 23, the pressure plate 21 and the connecting sleeve 22 can be detached from the outer tube 1 as a whole.

[0049] The use of this sampler:

[0050] The soil surface to be sampled is leveled, and the lower surface of the outer tube 1 and the lower surface of the inner tube 3 are placed on the leveled soil surface. At this time, since the lower surface of the outer tube 1 and the lower surface of the inner tube 3 are level, the mark point 14 is at the 0 scale line position.

[0051] Assume that the operator needs to take a 10 cm high soil sample. The operator connects the limiting assembly to the topmost connection hole 15, that is, screws the connection block 16 into the topmost connection hole 15, and ensures that the insertion rod 17 abuts the outer wall of the inner tube 3 under the action of the spring 19. Since the wall of the outer tube 1 is made of transparent material, it is directly visible whether the insertion rod 17 abuts the outer wall of the inner tube 3.

[0052] Then, the operator rotates the handle bar 8, causing the handle bar 8 and the threaded rod 7 to rotate as a whole relative to the mounting block 5 about the axis of the threaded rod 7. Simultaneously, because the threaded rod 7 is threadedly connected to the first transverse plate 2, the threaded rod 7 drives the mounting block 5, the second transverse plate 4, and the inner tube 3 to move downward relative to the outer tube 1 as a whole. Because the long hole in the middle of the threaded rod 7 does not contact the push rod 9, the threaded rod 7 does not cause the push rod 9, the push rod 9, and the grab bar 11 to rotate as a whole.

[0053] During the process of the mounting block 5, the second transverse plate 4, and the inner tube 3 moving downward as a whole, when the axis of the slot 20 is located at the 10 cm scale line, the insertion rod 17 is inserted into the slot 20 under the elastic force of the spring 19. At this time, restricted by the insertion rod 17 and the slot 20, the whole composed of the mounting block 5, the second transverse plate 4, and the inner tube 3 cannot continue to move downward relative to the outer tube 1. At this time, the whole composed of the mounting block 5, the second transverse plate 4, and the inner tube 3 has moved downward by 10 cm relative to the outer tube 1, that is, the inner tube 3 is inserted into the soil by 10 cm, completing the sampling of the 10 cm high soil sample. The lower end of the inner tube 3 can be made into a knife edge to facilitate insertion into the soil. If it is necessary to complete soil samples of other heights of 20 cm, 30 cm, 40 cm, and 50 cm, the limiting component will be connected to the connection hole 15 at the corresponding height. I will not go into details here. The maximum soil sampling height of this device is 50 cm.

[0054] As can be seen from this, when sampling soil samples at heights that are integer multiples of 10 cm, the operator does not need to check the specific position of the marking point 14 on the scale line; simply by ensuring that the limiting assembly is in the corresponding connection hole 15, the corresponding soil sample at a height of integer multiples of 10 cm can be sampled. Compared to visually checking that the marking point 14 is at the corresponding height, using the limiting assembly to limit the downward movement of the inner tube 3 can more accurately ensure the sampling height.

[0055] After the soil sample enters the inner tube 3, part of the original gas in the inner tube 3 escapes from the outer tube 1 through the gap between the push plate 10 and the inner tube 3, the first through hole 12, and the second through hole 13 in sequence, and the inner tube 3 and the outer tube 1 are still at standard atmospheric pressure.

[0056] When taking out the soil sample in the inner tube 3 for storage, it is only necessary to hold the grab rod 11 and apply downward force to move the whole composed of the grab rod 11, the push rod 9 and the push plate 10 downward relative to the inner tube 3. Because the whole composed of the inner tube 3, the mounting block 5, the threaded rod 7 and the outer tube 1 is immovable, the push plate 10 moves downward relative to the inner tube 3 and can push the soil sample out of the inner tube 3.

[0057] If soil samples are required that are not multiples of 10 cm, the limiting assembly is not required. The sampling method is the same as the traditional method. That is, when inserting the inner tube 3 into the soil, observe the alignment of the marked point 14 and the scale line. For example, if the marked point 14 reaches the 5 cm scale line, the sample height is 5 cm. The soil sample in the inner tube 3 is removed and stored in the same manner as previously described and will not be further described.

[0058] Sampling after installing the pressure plate 21 can reduce the pressure on the soil surface, and it is more stable when placed on the soil surface, ensuring that the operator can apply downward force more stably.

[0059] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. A multi-depth in-situ soil sampler, characterized in that: The invention comprises an outer tube (1), the outer tube (1) being made of a transparent material, the axis of the outer tube (1) being arranged in a vertical direction, and a first transverse plate (2) being fixed on the top of the outer tube (1) for blocking the top opening of the outer tube (1); an inner tube (3) being arranged in the outer tube (1), the axis of the inner tube (3) being arranged in a vertical direction, and a second transverse plate (4) being fixed on the top of the inner tube (3) for blocking the top opening of the inner tube (3); the second transverse plate (4) and the inner tube (3) being movably clamped on the inner wall of the inner tube (3) as a whole, and the whole being being able to slide vertically relative to the outer tube (1); Scale lines are vertically arranged on the wall of the outer tube (1), with the 0 scale line at the top and the other scale lines below the 0 scale line; a marking point (14) is arranged on the outer wall of the inner tube (3); when the marking point (14) is at the same height as the 0 scale line, the lower surface of the outer tube (1) is flush with the lower surface of the inner tube (3); A slot (20) is provided on the wall of the inner tube (3), and the slot (20) is at the same height as the marking point (14); a plurality of connection holes (15) are provided on the wall of the outer tube (1), and each connection hole (15) is located at a height that is an integer multiple of the 10 cm scale line; The sampler further comprises a limiting assembly connected to one of the connecting holes (15); when the second transverse plate (4) and the inner tube (3) as a whole move downward relative to the outer tube (1), the limiting assembly can be inserted into the slot (20) and limit the movement of the inner tube (3) relative to the outer tube (1).

2. The multi-depth in-situ soil sampler according to claim 1, characterized in that: The restriction components include: The connecting block (16) is T-shaped when viewed from the radial direction of the outer tube (1). The connecting block (16) includes a rod section and a disc section. The rod section is threadedly connected to the corresponding connecting hole (15), and the disc section abuts against the outer wall of the outer tube (1). The insertion rod (17) is movably mounted on the connecting block (16) and can slide relative to the connecting block (16). The end of the insertion rod (17) facing the inner tube (3) extends into the outer tube (1), and the end of the insertion rod (17) abuts against the outer wall of the inner tube (3); the end of the insertion rod (17) away from the inner tube (3) passes through the disc section; A stop plate (18) is fixed to the end of the insertion rod (17) away from the inner tube (3); The spring (19) is sleeved on the insertion rod (17); the spring (19) is between the disc section and the contact disc (18); the two ends of the spring (19) are fixedly connected to the disc section and the contact disc (18) respectively, and the spring (19) is in an extended state.

3. The multi-depth in-situ soil sampler according to claim 1, characterized in that: A mounting block (5) is fixed on the upper surface of the second transverse plate (4); a threaded hole (6) is provided on the first transverse plate (2); a threaded rod (7) is threadedly connected in the threaded hole (6); the axis of the threaded rod (7) is arranged in the vertical direction; the non-threaded area at the lower end of the threaded rod (7) is rotatably connected to the mounting block (5); two handle rods (8) are fixed on the top of the threaded rod (7); the axes of the two handle rods (8) are arranged along the radial direction of the threaded rod (7); when observed from the axis of the threaded rod (7), the axes of the two handle rods (8) are 180 degrees apart.

4. The multi-depth in-situ soil sampler according to claim 3, characterized in that: A push rod (9) is passed through the threaded rod (7), and the axis of the push rod (9) is arranged in the vertical direction. A long hole for the push rod (9) to pass through is commonly opened on the threaded rod (7), the mounting block (5) and the second cross plate (4). The push rod (9) can move relative to the threaded rod (7) along the long hole; the lower end of the push rod (9) extends into the inner tube (3), and a push plate (10) is fixed to the lower end of the push rod (9); the upper end of the push rod (9) extends out of the threaded rod (7), and a grab bar (11) is fixed to the upper end of the push rod (9). The rotation of the threaded rod (7) does not drive the push rod (9) to rotate.

5. The multi-depth in-situ soil sampler according to claim 4, characterized in that: The push plate (10) is not sealed with the inner wall of the inner tube (3); a second through hole (13) is provided on the first transverse plate (2), and a first through hole (12) is provided on the second transverse plate (4).

6. The multi-depth in-situ soil sampler according to claim 4, characterized in that: The outer tube (1) is sleeved with a pressure plate (21), a connecting sleeve (22) is fixed on the pressure plate (21), the connecting sleeve (22) is sleeved on the outer tube (1), the connecting sleeve (22) is connected to the outer tube (1) via bolts (23), and the lower surface of the pressure plate (21) is flush with the lower surface of the outer tube (1).

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