Soil sampling equipment

Abstract

The utility model discloses soil sampling equipment, and relates to the technical field of sampling equipment, the soil sampling equipment comprises a bottom fixing plate, the rear end of the bottom fixing plate is fixedly connected with a back fixing plate, and the front end of the back fixing plate is provided with a pipe pressing assembly convenient for lower pipe sampling. The soil sampling equipment is provided with a servo motor, a lead screw, a sliding block, a pressing frame, a pressing block, an electromagnet and a guide pipe, when the soil sampling equipment is used, the servo motor drives the sliding block to move downwards along a vertical sliding rail through the lead screw, the pressing block at the bottom of the pressing frame at the front end of the sliding block is meshed with a sampling pipe fixing head, and the electromagnet loses power to generate magnetic force to adsorb the sampling pipe fixing head; the metal sampling tube moves downwards along the guide tube and is inserted into the sampling area to collect a soil sample along with the downward pressing of the sampling tube fixing head by the pressing block, so that the function of automatically pressing the tube and flexibly sampling is realized, and the problem that the device does not have the function of automatically pressing the tube and flexibly sampling is solved.

Description

Technical Field

[0001] This utility model relates to the field of sampling equipment technology, specifically a soil sampling device. Background Technology

[0002] Furthermore, due to improper fertilization, modern agricultural production often suffers from an imbalance between soil and fertilizer supply and demand, as well as irrational fertilization practices. Therefore, to achieve better scientific fertilization and strictly control toxic and harmful substances, producers need to use soil testing instruments to accurately analyze soil samples and adjust agricultural production. This typically involves collecting field soil samples and analyzing various components in different soil layers; soil sampling is a crucial step in soil analysis.

[0003] Existing soil sampling devices are mostly divided into handheld portable and mechanical types. Their basic structure generally consists of a sampling head, connecting rod, and power drive unit. The drive unit for manual soil samplers is a handle, while the drive unit for mechanical soil samplers is an electric drive device. The operation process involves vertically inserting the sampling head into the soil sample, then pressing the soil sample into the sampling head through downward squeezing and rotation, and finally extracting the soil sample from the soil layer through upward lifting and rotation, thus completing the sampling. Although existing soil sampling devices can basically meet people's needs, the following problems still exist: existing handheld portable soil sampling devices require a lot of manual labor, have a small sampling volume, and are not suitable for sampling large areas of farmland; while existing mechanical soil sampling devices have low automation, complex equipment structure, high production costs, cumbersome operation, and cannot perform continuous repeated sampling, lacking the function of automatic tube pressing for flexible sampling.

[0004] Now, a new type of soil sampling device is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a soil sampling device to solve the problem mentioned in the background art of not having the function of automatic tube pressing and flexible sampling.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a soil sampling device, including a bottom fixing plate, a back fixing plate fixedly connected to the rear end of the bottom fixing plate, a vertical frame fixedly connected to the top of the front end of the back fixing plate, a motor mounting cylinder vertically fixedly connected to the front end of the top of the bottom fixing plate, a stepper motor installed at the top of the inside of the motor mounting cylinder, a rotating disk fixedly connected to the output end of the stepper motor, six sets of metal sampling tubes arranged above the bottom fixing plate, sampling tube fixing heads sleeved on the top ends of the metal sampling tubes, and a tube pressing assembly for facilitating tube sampling at the front end of the back fixing plate.

[0007] The pressure tube assembly includes a vertical slide rail, which is vertically fixedly connected to the middle position of the front end of the back fixing plate. A first metal proximity switch sensor is installed at the bottom left side of the vertical slide rail, and a second metal proximity switch sensor is installed at the top left side of the vertical slide rail. A servo motor is fixedly connected to the top end of the vertical slide rail, and a lead screw is movably connected between the output end of the servo motor and the top end of the bottom fixing plate. A slider is provided at the front end of the vertical slide rail, and a pressure frame is fixedly connected to the front end of the slider. A pressure block is fixedly connected to the bottom end of the pressure frame, and an electromagnet is provided inside the pressure block. A guide tube is fixedly connected to the rear end of the top of the bottom fixing plate, and a first reserved slot is provided at the rear end of the motor mounting cylinder.

[0008] Preferably, the lead screw passes through the interior of the slider, and the threads on the outside of the lead screw match the threads inside the slider.

[0009] Preferably, the first metal proximity switch sensor, the second metal proximity switch sensor, the servo motor, and the electromagnet are electrically connected, the shape and size of the outer part of the bottom end of the pressure block are adapted to the shape and size of the inner part of the top end of the sampling tube fixing head, and the pressure block and the sampling tube fixing head are fitted with a clearance.

[0010] Preferably, the top end of the guide tube is lower than the bottom end of the metal sampling tube, and the guide tube passes through the upper and lower ends of the bottom fixing plate.

[0011] Preferably, an annular baffle is welded to the top of the upright frame, a circular slot is provided inside the upright frame, a trapezoidal slot is provided at the rear end of the circular slot, and multiple sets of sampling tubes are inserted into the slots on the outer ring of the rotating disk.

[0012] Preferably, the inner diameter of the annular baffle is larger than the inner diameter of the circular slot, and the distance between the inner wall of the circular slot and the outer wall of the motor mounting cylinder is larger than the cross-sectional diameter of the metal sampling tube.

[0013] Preferably, two sets of PVC half-tubes are inserted into the inside of the metal sampling tube from top to bottom, two sets of pin pre-reserved slots are provided at the top of the outside of the metal sampling tube, and a positioning pin is inserted into the inside of the sampling tube fixing head.

[0014] Preferably, the outer diameter of the PVC half-tube is the same as the inner diameter of the metal sampling tube, and the positioning pin passes through the interior of the pin pre-reserved groove.

[0015] Compared with the prior art, the beneficial effects of this utility model are: the soil sampling device not only realizes the function of automatic tube pressing and flexible sampling, but also realizes the function of easy tube replacement and easy soil sample extraction;

[0016] (1) By setting up a vertical slide rail, a first metal proximity switch sensor, a vertical plate frame, a second metal proximity switch sensor, a servo motor, a lead screw, a slider, a pressure frame, a pressure block, an electromagnet, and a guide tube, when in use, the bottom fixing plate is set up in the area to be sampled. The bottom fixing plate and the back fixing plate constitute the main frame of the equipment. When sampling, the servo motor is started. The servo motor drives the slider to move downward along the vertical slide rail through the lead screw. The pressure block at the bottom of the pressure frame at the front end of the slider engages with the sampling tube fixing head. The electromagnet loses power and generates magnetic force, attracting the sampling tube fixing head, making it difficult for it to move. As the pressure block presses down on the sampling tube fixing head, the metal sampling tube goes down along the guide tube and is inserted into the sampling area to collect soil samples. The first metal proximity switch sensor (for the deepest sampling point) and the second metal proximity switch sensor (for the sampling starting point) work together with the servo motor. The sampling depth can be accurately adjusted by controlling the servo motor through the PLC, realizing the function of automatic tube pressing and flexible sampling.

[0017] (2) By setting a first reserved groove, annular baffle, circular slot, trapezoidal slot, motor mounting cylinder, stepper motor, rotating disk and sampling tube into the groove, when in use, as the first tube is successfully sampled, the slider is reset and the metal sampling tube is lifted, the electromagnet is energized and demagnetized, the stepper motor in the motor mounting cylinder starts and drives the rotating disk to rotate, the rotating disk moves the sampled metal sampling tube, the sampling tube moves along the gap between the circular slot and the motor mounting cylinder, and the subsequent empty sampling tube moves to the trapezoidal slot and engages with the pressure block. The sampling tube into the groove facilitates the insertion of the sampling tube fixing head, and works with the annular baffle and circular slot to limit it. The first reserved groove and trapezoidal slot facilitate the up and down movement of the sampling tube, realizing the function of easy tube replacement.

[0018] (3) By setting up a metal sampling tube, a PVC half tube, a pre-reserved slot for the pin, a positioning pin, and a sampling tube fixing head, when in use, the metal sampling tube containing the sample is pulled out, the positioning pin in the sampling tube fixing head is loosened and pulled out. After the positioning pin is disengaged from the pre-reserved slot for the pin, the metal sampling tube and the sampling tube fixing head can be separated. Then, the PVC half tube in the metal sampling tube is poured out. The PVC half tube is a PVC pipe divided into two halves along the length direction. The two sets of PVC half tubes can be directly separated after being taken out, and the sample can be taken out. This realizes the function of facilitating the extraction of soil samples and ensuring the integrity of the soil layer structure. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a front view structural diagram of the present utility model;

[0021] Figure 3 This is a side sectional view of the present invention.

[0022] Figure 4 This is a side view of the back fixing plate structure of this utility model;

[0023] Figure 5 This is a top view of the vertical frame structure of this utility model;

[0024] Figure 6 This is a magnified structural diagram of the front view cross-section of the metal sampling tube of this utility model.

[0025] In the diagram: 1. Bottom fixing plate; 2. Back fixing plate; 3. Vertical slide rail; 4. First metal proximity switch sensor; 5. Vertical plate frame; 6. Second metal proximity switch sensor; 7. Servo motor; 8. Lead screw; 9. Slider; 10. Pressure frame; 11. Pressure block; 12. Electromagnet; 13. Guide tube; 14. First reserved slot; 15. Annular baffle; 16. Circular slot; 17. Trapezoidal slot; 18. Motor mounting cylinder; 19. Stepper motor; 20. Rotating disk; 21. Sampling tube insertion slot; 22. Metal sampling tube; 23. PVC half tube; 24. Pin reserved slot; 25. Positioning pin; 26. Sampling tube fixing head. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1: Please refer to Figure 1-6 A soil sampling device includes a bottom fixing plate 1, a back fixing plate 2 fixedly connected to the rear end of the bottom fixing plate 1, a vertical frame 5 fixedly connected to the top of the front end of the back fixing plate 2, a motor mounting cylinder 18 vertically fixedly connected to the front end of the top of the bottom fixing plate 1, a stepper motor 19 installed at the top of the inside of the motor mounting cylinder 18, a rotating disk 20 fixedly connected to the output end of the stepper motor 19, six sets of metal sampling tubes 22 arranged above the bottom fixing plate 1, a sampling tube fixing head 26 sleeved on the top end of the metal sampling tubes 22, and a tube pressing assembly for easy tube sampling at the front end of the back fixing plate 2.

[0028] Please see Figure 1-6A soil sampling device also includes a pipe pressing assembly, which includes a vertical slide rail 3. The vertical slide rail 3 is vertically fixedly connected to the middle position of the front end of the back fixing plate 2. A first metal proximity switch sensor 4 is installed at the bottom left side of the vertical slide rail 3, and a second metal proximity switch sensor 6 is installed at the top left side of the vertical slide rail 3. A servo motor 7 is fixedly connected to the top end of the vertical slide rail 3. A lead screw 8 is movably connected between the output end of the servo motor 7 and the top end of the bottom fixing plate 1. A slider 9 is provided at the front end of the vertical slide rail 3. A pressure frame 10 is fixedly connected to the front end of the slider 9. A pressure block 11 is fixedly connected to the bottom end of the pressure frame 10. An electromagnet 12 is provided inside the pressure block 11. A guide tube 13 is fixedly connected to the rear end of the top of the bottom fixing plate 1. A first reserved groove 14 is provided at the rear end of the motor mounting cylinder 18.

[0029] The lead screw 8 passes through the interior of the slider 9, and the threads on the outside of the lead screw 8 match the threads inside the slider 9. The first metal proximity switch sensor 4, the second metal proximity switch sensor 6, the servo motor 7, and the electromagnet 12 are electrically connected. The shape and size of the bottom of the pressure block 11 are adapted to the shape and size of the top of the sampling tube fixing head 26. The pressure block 11 and the sampling tube fixing head 26 are fitted with a clearance. The top of the guide tube 13 is lower than the bottom of the metal sampling tube 22. The guide tube 13 passes through the upper and lower ends of the bottom fixing plate 1 for convenient and rapid sampling.

[0030] Specifically, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the servo motor 7 drives the slider 9 to move downward along the vertical slide rail 3 via the lead screw 8. The pressure block 11 at the bottom of the front end pressure frame 10 of the slider 9 engages with the sampling tube fixing head 26. The electromagnet 12 loses power and generates magnetic force, attracting the sampling tube fixing head 26 and making it difficult for it to move. As the pressure block 11 presses down on the sampling tube fixing head 26, the metal sampling tube 22 moves down along the guide tube 13 and is inserted into the sampling area to collect soil samples. The first metal proximity switch sensor 4 and the second metal proximity switch sensor 6 cooperate with the servo motor 7. The sampling depth can be precisely adjusted by controlling the servo motor 7 through the PLC.

[0031] Example 2: An annular baffle 15 is welded to the top of the upright frame 5. A circular slot 16 is provided inside the upright frame 5. A trapezoidal slot 17 is provided at the rear end of the circular slot 16. Multiple sets of sampling tubes are inserted into the slot 21 on the outer ring of the rotating disk 20. The inner diameter of the annular baffle 15 is larger than the inner diameter of the circular slot 16. The distance between the inner wall of the circular slot 16 and the outer wall of the motor mounting cylinder 18 is larger than the cross-sectional diameter of the metal sampling tube 22, which facilitates quick tube replacement.

[0032] Specifically, such as Figure 1 and Figure 5As shown, the stepper motor 19 inside the motor mounting cylinder 18 starts and drives the rotating disk 20 to rotate. The rotating disk 20 moves the sampled metal sampling tube 22. The sampling tube moves along the gap between the circular slot 16 and the motor mounting cylinder 18. The subsequent empty sampling tube moves to the trapezoidal slot 17 and engages with the pressure block 11. The sampling tube is inserted into the slot 21 to facilitate the insertion of the sampling tube fixing head 26. It works with the annular baffle 15 and the circular slot 16 to limit its movement. The first reserved slot 14 and the trapezoidal slot 17 facilitate the up and down movement of the sampling tube.

[0033] Example 3: Two sets of PVC half tubes 23 are inserted into the inside of the metal sampling tube 22 from top to bottom. Two sets of pin pre-reserved slots 24 are provided at the top of the outside of the metal sampling tube 22. A positioning pin 25 is inserted into the inside of the sampling tube fixing head 26. The outer diameter of the PVC half tube 23 is consistent with the inner diameter of the metal sampling tube 22. The positioning pin 25 passes through the inside of the pin pre-reserved slot 24, which facilitates the quick removal of the sample.

[0034] Specifically, such as Figure 1 and Figure 6 As shown, loosen and pull out the positioning pin 25 inside the sampling tube fixing head 26. After the positioning pin 25 disengages from the pin reserved groove 24, the metal sampling tube 22 and the sampling tube fixing head 26 can be separated. Then, pour out the PVC half tube 23 in the metal sampling tube 22. The PVC half tube 23 is a PVC tube divided into two halves along the length direction. The two sets of PVC half tubes 23 can be separated directly after being taken out, and the sample can be taken out.

[0035] Working principle: When using this utility model, firstly, the bottom fixing plate 1 is set up in the area to be sampled. The bottom fixing plate 1 and the back fixing plate 2 constitute the main frame of the equipment. When sampling, the servo motor 7 is started. The servo motor 7 drives the slider 9 to move downward along the vertical slide rail 3 through the lead screw 8. The pressure block 11 at the bottom of the front end pressure frame 10 of the slider 9 engages with the sampling tube fixing head 26. The electromagnet 12 is de-energized and generates magnetic force, which attracts the sampling tube fixing head 26, making it difficult for it to move. As the pressure block 11 presses down on the sampling tube fixing head 26, the metal sampling tube 22 goes down along the guide tube 13 and is inserted into the sampling area to collect soil samples. The first metal proximity switch sensor 4 (for the deepest sampling point) and the second metal proximity switch sensor 6 (for the starting point of sampling) cooperate with the servo motor 7. The sampling depth can be accurately adjusted by controlling the servo motor 7 through the PLC. With the first tube sampling successful, the slider 9 resets and lifts the metal sampling tube 22. The electromagnet 12 is energized and loses its magnetic force. The stepper motor 19 in the motor mounting cylinder 18 starts and drives the rotating disk 20 to rotate. The rotating disk 20 moves the sampled metal sampling tube 22. The sampling tube moves along the gap between the circular slot 16 and the motor mounting cylinder 18. The subsequent empty sampling tube moves to the trapezoidal slot 17 and engages with the pressure block 11. The sampling tube is inserted into the slot 21 to facilitate the insertion of the sampling tube fixing head 26. It works with the annular baffle 15 and the circular slot 16 to limit its movement. The first reserved slot 14 and the trapezoidal slot 17 facilitate the up and down movement of the sampling tube. Pull out the metal sampling tube 22 containing the sample, loosen and pull out the positioning pin 25 in the sampling tube fixing head 26. After the positioning pin 25 disengages from the pin reserved groove 24, the metal sampling tube 22 and the sampling tube fixing head 26 can be separated. Then pour out the PVC half tube 23 in the metal sampling tube 22. The PVC half tube 23 is a PVC tube divided into two halves along the length direction. The two sets of PVC half tubes 23 can be separated directly after being taken out, and the sample can be taken out.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A soil sampling device, comprising a bottom fixing plate (1), characterized in that: The rear end of the bottom fixing plate (1) is fixedly connected to the back fixing plate (2), the top of the front end of the back fixing plate (2) is fixedly connected to the upright frame (5), the front end of the top of the bottom fixing plate (1) is vertically fixedly connected to the motor mounting cylinder (18), the top of the motor mounting cylinder (18) is installed with a stepper motor (19), the output end of the stepper motor (19) is fixedly connected to the rotating disk (20), six sets of metal sampling tubes (22) are arranged above the bottom fixing plate (1), the top end of the metal sampling tubes (22) is sleeved with a sampling tube fixing head (26), and the front end of the back fixing plate (2) is provided with a tube pressing assembly to facilitate tube sampling. The pressure tube assembly includes a vertical slide rail (3), which is vertically fixedly connected to the middle position of the front end of the back fixing plate (2). A first metal proximity switch sensor (4) is installed at the bottom left side of the vertical slide rail (3), and a second metal proximity switch sensor (6) is installed at the top left side of the vertical slide rail (3). A servo motor (7) is fixedly connected to the top end of the vertical slide rail (3). A lead screw (8) is movably connected between the output end of the servo motor (7) and the top end of the bottom fixing plate (1). A slider (9) is provided at the front end of the vertical slide rail (3). A pressure frame (10) is fixedly connected to the front end of the slider (9). A pressure block (11) is fixedly connected to the bottom end of the pressure frame (10). An electromagnet (12) is provided inside the pressure block (11). A guide tube (13) is fixedly connected to the rear end of the top of the bottom fixing plate (1). A first reserved slot (14) is provided at the rear end of the motor mounting cylinder (18).

2. The soil sampling device according to claim 1, characterized in that: The lead screw (8) passes through the interior of the slider (9), and the threads on the outside of the lead screw (8) match the threads inside the slider (9).

3. The soil sampling device according to claim 1, characterized in that: The first metal proximity switch sensor (4), the second metal proximity switch sensor (6), the servo motor (7), and the electromagnet (12) are electrically connected. The shape and size of the bottom of the pressure block (11) are adapted to the shape and size of the top of the sampling tube fixing head (26). The pressure block (11) and the sampling tube fixing head (26) are fitted with a clearance.

4. A soil sampling device according to claim 1, characterized in that: The top end of the guide tube (13) is lower than the bottom end of the metal sampling tube (22), and the guide tube (13) passes through the upper and lower ends of the bottom fixing plate (1).

5. A soil sampling device according to claim 1, characterized in that: The top of the upright frame (5) is welded with an annular baffle (15), the inside of the upright frame (5) is provided with a circular slot (16), the rear end of the circular slot (16) is provided with a trapezoidal slot (17), and the outer ring of the rotating disk (20) is provided with multiple sets of sampling tubes inserted into the slots (21).

6. A soil sampling device according to claim 5, characterized in that: The inner diameter of the annular baffle (15) is larger than the inner diameter of the circular slot (16), and the distance between the inner wall of the circular slot (16) and the outer wall of the motor mounting cylinder (18) is larger than the cross-sectional diameter of the metal sampling tube (22).

7. A soil sampling device according to claim 1, characterized in that: The metal sampling tube (22) has two sets of PVC half tubes (23) inserted from top to bottom inside. The top of the metal sampling tube (22) has two sets of pin pre-reserved slots (24). The sampling tube fixing head (26) has a positioning pin (25) inserted inside.

8. A soil sampling device according to claim 7, characterized in that: The outer diameter of the PVC half-pipe (23) is the same as the inner diameter of the metal sampling tube (22), and the positioning pin (25) passes through the interior of the pin reserved groove (24).

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