Soil stratified sampling device for field investigation

Abstract

The invention discloses a soil stratified sampling device for field investigation, and relates to the technical field of soil sampling, the soil stratified sampling device comprises a sampling device main body, a base and sampling cylinders, the bottom end of the outer wall of the sampling device main body is connected with the base, and the two sides of the middle part of the sampling device main body are connected with the sampling cylinders. According to the soil stratified sampling device for field investigation, disclosed by the invention, the sampling barrels with different heights enter the interior of the side wall of a soil pit at the same time, so that soil with different depths is sampled at the same time, and soil on two sides is sampled at the same time, so that all samples are ensured to be at the same time reference; the time difference of samples with different depths is prevented, so that the sampling efficiency is improved and the sample quality is ensured; when the sampling barrel is inserted into a soil layer for sampling, the supporting rod can be inserted into the pit bottom to improve the supporting stability of the sampling device main body, so that the sampling device is stabilized and prevented from inclining randomly.

Description

Technical Field

[0001] The invention relates to the technical field of soil sampling, in particular to a soil layer sampling device for field investigation. Background Art

[0002] Field research is a research method that collects raw data and information through direct observation, measurement, sampling, interviews, and other methods in natural environments or specific sites. Soil sampling refers to the method of collecting soil samples, including the layout and sampling techniques. It is a tool or equipment specifically designed to collect soil samples at predetermined depths in a field environment while preserving the original structure and hierarchical relationships of each soil layer.

[0003] Application No. 202322391108.5 A soil stratification sampling device for grassland field survey, comprising a sampling mechanism and a sampling motor installed on the top of the sampling mechanism; a lifting mechanism is provided on the outside of the sampling mechanism, and a driving motor is provided on the top of the lifting mechanism; the center position of the top of the limit plate is fixedly connected to the sampling motor, and the output end of the sampling motor passes through the limit plate and is fixedly connected to the storage chamber; a drill bit is fixedly connected to the bottom of the storage chamber, and a plurality of grooves are provided inside the storage chamber. There are three groups of grooves, and the grooves are evenly distributed in the middle and upper part of the storage chamber. By setting up the sampling mechanism, the stratified extraction of soil can be facilitated, and the storage chamber is driven to rotate together with the rotating head by the sampling motor, and the restoring force of the first spring is used to push the baffle to rotate along the hinge block, and the connecting rod is driven inward by the baffle, so that the slider moves along the inner wall of the clamping frame.

[0004] Although the above-mentioned comparative documents can be used for layered soil extraction, when extracting soil samples at different depths, the drill bit needs to be drilled into the soil layers at different depths multiple times to complete the soil sampling work. It is difficult to perform soil sampling work at different depths at the same time, thus affecting the soil sampling efficiency of field surveys. Summary of the Invention

[0005] The object of the present invention is to provide a soil layer sampling device for field investigation to solve the problems raised by the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a soil stratification sampling device for field investigation, comprising a sampling device body, a base and a sampling barrel, wherein the bottom end of the outer wall of the sampling device body is connected to the base, and the sampling barrels are connected to the two sides of the middle part of the sampling device body, fixing grooves are provided on both sides of the inner wall of the sampling device body, and the fixing grooves are connected to the inside of the fixing grooves, a servo motor is installed in the middle of the top of the sampling device body, and a threaded column is docked with the output end of the servo motor, the middle part of the outer wall of the threaded column is threadedly connected to the base, and the two sides of the outer wall of the base are rotatably connected to transmission rods, the bottom end of the outer wall of the transmission rod is rotatably connected to the fixed seat, and the middle part of the outer wall of the fixed seat is connected to the sampling barrel, and an end cover is connected to one side of the outer wall of the sampling barrel.

[0007] By allowing sampling tubes of different heights to enter the side wall of the pit at the same time, soil samples of different depths can be sampled at the same time, ensuring that all samples are at the same time reference, thus preventing time differences between samples at different depths.

[0008] Preferably, the sampling tube is slidably connected to the side wall of the sampling device body, the bases are evenly spaced, the transmission rods are distributed in an "eight"-shaped structure, and the fixing seat is in a "T"-shaped structure.

[0009] The rotation of the transmission rod generates a thrust on the fixing seat, so that the fixing seat drives the sampling tube to move horizontally.

[0010] Preferably, the inner diameter of the end cover is smaller than that of the sampling tube, and limiting plates are fixedly connected to both sides of the outer wall of the end cover. A limiting groove is provided inside the sampling tube, and the limiting plate extends into the groove and passes through the sampling tube.

[0011] The limiting plate is inserted into the sampling tube, thereby limiting the end cover to prevent the sampling tube from rotating at will.

[0012] Preferably, a fixing pin is connected to the side of the sampling tube away from the end cover, and the fixing pin is inserted into the interior of the fixing seat. Limiting holes are provided on the upper and lower sides of the interior of the fixing seat, and limiting plates extend therein.

[0013] Preferably, a latch is connected to the middle of the fixing seat, and the latch is connected to the fixing pin and the limiting plate through-hole.

[0014] The sampling tube and the end cover are fixed by allowing the latch to penetrate the limiting plate and the latch.

[0015] Preferably, a fixing rod is slidably connected to both sides of the bottom end of the fixing seat, and a spring is sleeved on the middle of the outer wall of the fixing rod. Both sides of the outer wall of the fixing rod are connected to the inner wall of the sampling device body, and both sides of the outer wall of the spring are connected to the fixing seat.

[0016] The sampling tube is assisted by a spring return to move back into the main body of the sampling device, and the fixing seat is guided to move smoothly by the fixing rod.

[0017] Preferably, the bottom end of the outer wall of the threaded column is threadedly connected to a support plate, and slide rails are slidably connected on both sides of the outer wall of the support plate. One side of the outer wall of the slide rail is connected to the inner wall of the sampling device body, and the side of the threaded column away from the servo motor is connected to the inner wall of the sampling device body through a bearing seat.

[0018] When the threaded column rotates to move the base downward for sampling, the support plate moves downward along the slide rail.

[0019] Preferably, support rods are fixedly connected to both sides of the bottom end of the support plate, and the support rods are slidably connected to the sampling device body and the base.

[0020] The support plate drives the support rod to move downward and insert it into the bottom of the pit.

[0021] As can be seen from the above, the soil layer sampling device for field investigation provided by the present invention has the following beneficial effects.

[0022] 1. By allowing sampling tubes of different heights to enter the side wall of the pit at the same time, soil samples at different depths can be taken at the same time, and soil samples on both sides can be taken at the same time, thereby ensuring that all samples are at the same time reference and preventing time differences between samples at different depths, thereby improving sampling efficiency and ensuring sample quality.

[0023] 2. By making the end cover and the sampling tube form a small hole and large cavity structure, the soil sample entering the sampling tube will be blocked by the end cover, thereby preventing the soil sample from being outside the sampling tube when the sampling tube is horizontally moved out of the soil layer.

[0024] 3. When the sampling tube is inserted into the soil layer for sampling, the support rod will be inserted into the bottom of the pit to enhance the support stability of the sampling device body, thereby stabilizing the sampling device and preventing it from tilting at will. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the internal three-dimensional structure of the sampling device of the present invention;

[0027] Figure 3 This is a schematic diagram of the main cutaway structure of the present invention;

[0028] Figure 4 This is a schematic diagram of the three-dimensional structure of the present invention from a top view;

[0029] Figure 5 This is a schematic diagram of the three-dimensional structure of the threaded column of the present invention;

[0030] Figure 6 This is a schematic diagram of the three-dimensional structure of the transmission rod of the present invention;

[0031] Figure 7 This is a schematic diagram of the main cutaway structure of the sampling tube of the present invention;

[0032] Figure 8 This is a schematic diagram of the three-dimensional structure of the limiting plate of the present invention;

[0033] Figure 9 It is a schematic diagram of the three-dimensional structure of the support plate of the present invention.

[0034] In the figure: 1. Sampling device body; 2. Base; 3. Sampling tube; 4. Side panel; 5. Servo motor; 6. Threaded column; 7. Base; 8. Transmission rod; 9. Fixed seat; 10. End cover; 11. Limit plate; 12. Latch; 13. Fixed rod; 14. Spring; 15. Support plate; 16. Slide rail; 17. Support rod. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] See also Figure 1-Figure 7 The present invention provides a technical solution: a soil layer sampling device for field investigation, comprising a sampling device body 1, a base 2 and a sampling tube 3, wherein the bottom end of the outer wall of the sampling device body 1 is connected to the base 2, and the sampling tubes 3 are connected to both sides of the middle of the sampling device body 1, and fixing grooves are provided on both sides of the inner wall of the sampling device body 1, and the inside of the fixing groove is connected to a side plate 4, a servo motor 5 is installed in the middle of the top of the sampling device body 1, and the output end of the servo motor 5 is connected to a threaded column 6, the middle of the outer wall of the threaded column 6 is threadedly connected to a base 7, and the outer wall of the base 7 is rotatably connected to a transmission rod 8 on both sides, the bottom end of the outer wall of the transmission rod 8 is rotatably connected to a fixed seat 9, and the middle of the outer wall of the fixed seat 9 is connected to the sampling tube 3 The sampling tube 3 is connected to each other, and an end cover 10 is connected to one side of the outer wall of the sampling tube 3; the sampling tube 3 is slidably connected to the side wall of the sampling device body 1, the bases 7 are evenly spaced, the transmission rods 8 are distributed in an "eight"-shaped structure, and the fixed seat 9 is a "T"-shaped structure; the inner diameter of the end cover 10 is smaller than the inner diameter of the sampling tube 3, and the outer walls of the end cover 10 are fixedly connected to the limit plates 11 on both sides, and a limit groove is provided inside the sampling tube 3, and the limit plates 11 extend into it and pass through the sampling tube 3; the bottom end of the fixed seat 9 is slidably connected with a fixing rod 13 on both sides, and a spring 14 is sleeved on the middle part of the outer wall of the fixing rod 13, the outer walls of the fixing rod 13 are connected to the inner wall of the sampling device body 1 on both sides, and the outer walls of the spring 14 are connected to the fixing seat 9 on both sides.

[0037] For specific implementation, see Figures 1-4 First, move the sampling device body 1 into the pre-drilled soil pit. At this time, the base 2 is in contact with the bottom of the pit. Then start the servo motor 5 to drive the threaded column 6 to rotate. The rotation of the threaded column 6 will generate a thrust on the base 7, causing multiple groups of bases 7 to move downward at the same time. Because the two sides of the base 7 are connected to the transmission rod 8 for rotation, the vertical movement of the base 7 will drive the transmission rod 8 to rotate. At this time, the angle between the transmission rod 8 and the base 7 will change, thereby generating a thrust on the fixed seat 9, so that the fixed seat 9 drives the sampling tube 3 along the fixed rod 13 to move away from the threaded column 6. At this time, the fixed seat 9 is guided by the fixed rod 13 to move smoothly.

[0038] See Figure 7 and Figure 8 At this time, the movement of the fixing seat 9 will stretch the spring 14, causing it to deform, and then the spring 14 will reset the auxiliary sampling tube 3 to move back into the sampling device body 1, and then the movement of the sampling tube 3 will drive the end cover 10 to move together. At this time, the sampling tubes 3 of different heights enter the side wall of the pit at the same time, and then sample the soil at different depths at the same time, and sample the soil on both sides at the same time, thereby ensuring that all samples are at the same time base, preventing time difference between samples at different depths, thereby improving sampling efficiency and ensuring sample quality.

[0039] When it is necessary to move the sampling tube 3 into the sampling device body 1, the servo motor 5 is started to move the base 7 upward, and then the fixing seat 9 moves with the sampling tube 3 in the direction close to the threaded column 6. Because the inner diameter of the end cover 10 is smaller than the inner diameter of the sampling tube 3, the end cover 10 and the sampling tube 3 form a small-hole and large-cavity structure. The soil sample entering the sampling tube 3 will be blocked by the end cover 10 and will not be completely moved out of the sampling tube 3 until the sampling tube 3 is completely moved into the sampling device body 1, preventing the soil sample from being outside when the sampling tube 3 is moved horizontally out of the soil layer.

[0040] See Figure 6-Figure 8 A fixing pin is connected to the side of the sampling tube 3 away from the end cover 10, and the fixing pin is inserted into the inside of the fixing seat 9. Limiting holes are provided on the upper and lower sides of the fixing seat 9, and the limiting plate 11 extends into them; a latch 12 is docked in the middle of the fixing seat 9, and the latch 12 is connected to the fixing pin and the limiting plate 11 in a through-connected manner.

[0041] When it is necessary to take out the soil sample inside the sampling tube 3, first move the sampling device body 1 to the ground, then push the side plate 4 upward to make the inside of the sampling device body 1 visible, and then move the pin 12 in the middle of the fixing seat 9 upward until the pin 12 is disconnected from the limit plate 11, thereby canceling the fixation. At this time, remove the sampling tube 3 and move it out of the sampling device body 1, then move the end cover 10 horizontally to disconnect the limit plate 11 from the sampling tube 3, and then make one side of the outer wall of the sampling tube 3 visible, and now the soil sample in the sampling tube 3 can be taken out.

[0042] See Figure 3 , Figure 5 ,and Figure 9 The bottom end of the outer wall of the threaded column 6 is threadedly connected to a support plate 15, and slide rails 16 are slidably connected on both sides of the outer wall of the support plate 15. One side of the outer wall of the slide rail 16 is connected to the inner wall of the sampling device body 1, and the side of the threaded column 6 away from the servo motor 5 is connected to the inner wall of the sampling device body 1 through the bearing seat; support rods 17 are fixedly connected on both sides of the bottom end of the support plate 15, and the support rods 17 are slidably connected to the sampling device body 1 and the base 2.

[0043] During specific implementation, since the bottom end of the threaded column 6 and the support plate 15 are threadedly connected, when the threaded column 6 rotates to cause the base 7 to move downward for sampling, the support plate 15 will move downward along the slide rail 16. At this time, the support plate 15 is guided to move smoothly by the slide rail 16, and then the downward movement of the support plate 15 will drive the support rod 17 to move downward together until the support rod 17 moves out of the base 2 and inserts into the bottom of the pit. Then, when the sampling tube 3 is inserted into the soil layer for sampling, the support rod 17 will be inserted into the bottom of the pit together to enhance the support stability of the sampling device body 1, thereby stabilizing the sampling device to prevent it from tilting at will.

[0044] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. The replacement may be a replacement of a portion of a structure, device, or method step, or it may be a complete technical solution. Any equivalent replacement or modification based on the technical solution and inventive concept of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A soil layer sampling device for field investigation, comprising a sampling device body (1), a base (2) and a sampling tube (3), wherein the bottom end of the outer wall of the sampling device body (1) is connected to the base (2), and the two sides of the middle part of the sampling device body (1) are connected to the sampling tube (3), characterized in that: The sampling device body (1) has fixing grooves on both sides of the inner wall, and the fixing grooves are connected to side plates (4). A servo motor (5) is installed in the middle of the top of the sampling device body (1), and the output end of the servo motor (5) is connected to a threaded column (6). The middle of the outer wall of the threaded column (6) is threadedly connected to a base (7), and the outer walls of the base (7) are rotatably connected to transmission rods (8). The bottom end of the outer wall of the transmission rod (8) is rotatably connected to a fixing seat (9), and the middle of the outer wall of the fixing seat (9) is connected to the sampling tube (3). One side of the outer wall of the sampling tube (3) is connected to an end cover (10).

2. The soil stratification sampling device for field investigation according to claim 1, characterized in that: The sampling cylinder (3) is slidably connected to the side wall of the sampling device body (1); the bases (7) are distributed at equal intervals; the transmission rods (8) are distributed in an "eight"-shaped structure; and the fixing seat (9) is in a "T"-shaped structure.

3. The soil stratification sampling device for field investigation according to claim 2, characterized in that: The inner diameter of the end cover (10) is smaller than the inner diameter of the sampling tube (3), and the two sides of the outer wall of the end cover (10) are fixedly connected to the limiting plates (11). The sampling tube (3) is provided with a limiting groove inside, and the limiting plates (11) extend into the limiting groove and penetrate the sampling tube (3).

4. The soil stratification sampling device for field investigation according to claim 3, characterized in that: A fixing pin is connected to the side of the sampling tube (3) away from the end cover (10), and the fixing pin is inserted into the interior of the fixing seat (9). Limiting holes are provided on the upper and lower sides of the interior of the fixing seat (9), and the limiting plates (11) extend therein.

5. The soil layer sampling device for field investigation according to claim 4, characterized in that: A latch pin (12) is connected to the middle of the fixing seat (9), and the latch pin (12) is connected to the fixing pin and the limiting plate (11) through-connection.

6. The soil layer sampling device for field investigation according to claim 5, characterized in that: The bottom ends of the fixing seat (9) are slidably connected to fixing rods (13), and the middle of the outer wall of the fixing rod (13) is sleeved with a spring (14). The outer walls of the fixing rod (13) are connected to the inner walls of the sampling device body (1) on both sides, and the outer walls of the spring (14) are connected to the fixing seat (9) on both sides.

7. The soil layer sampling device for field investigation according to claim 1, characterized in that: The bottom end of the outer wall of the threaded column (6) is threadedly connected to a support plate (15), and both sides of the outer wall of the support plate (15) are slidably connected to slide rails (16), one side of the outer wall of the slide rail (16) is connected to the inner wall of the sampling device body (1), and the side of the threaded column (6) away from the servo motor (5) is connected to the inner wall of the sampling device body (1) through a bearing seat.

8. The soil layer sampling device for field investigation according to claim 7, characterized in that: Support rods (17) are fixedly connected to both sides of the bottom end of the support plate (15), and the support rods (17) are all slidably connected to the sampling device body (1) and the base (2).

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