Soil or soil gas combined sampling device and use method thereof

Abstract

The invention discloses a combined sampling device for soil or soil gas. The combined sampling device comprises a sampling frame; the sampling assembly comprises a rotatable lifting mechanism, the lifting mechanism is connected to the sampling frame, the lifting mechanism comprises a lifting block, the lifting block is provided with a mounting part, a driving motor is fixed to the mounting part, a driving gear is fixed to a motor rod of the driving motor, and the driving gear is driven by the driving gear to rotate; a sampling cylinder is further rotationally connected to the mounting part, a soil crushing part is in threaded connection with the bottom of the sampling cylinder, and a plurality of crushing teeth are arranged on the bottom surface of the soil crushing part; and the material storage assembly comprises a material storage plate, and a plurality of material storage holes and a discharging hole are formed in the material storage plate. According to the soil or soil gas combined sampling device, automatic storage after soil collection can be achieved, various indexes of soil at different depths can be conveniently detected after storage, and soil analysis in the later period is facilitated.

Description

Technical Field

[0001] The invention belongs to the field of soil collection, and in particular relates to a soil or soil gas combined sampling device and a use method thereof. Background Art

[0002] Soil or soil gas sampling is an important soil investigation and analysis method with multiple uses. For example, by collecting soil or soil gas samples, the nutrient content of the soil or soil gas, such as nitrogen, phosphorus, potassium, etc., can be analyzed to evaluate the level of soil or soil gas; or pollution monitoring of soil and soil gas can be carried out to monitor the content of heavy metals, organic matter and other pollutants in the soil and soil gas, so as to promptly discover soil pollution problems and take corresponding control measures.

[0003] At present, when sampling soil, in order to make the sampling speed faster and the sampling process smoother, a rotary drill is usually used for sampling, and when sampling soil gas, a direct pressure drill is usually used for sampling. This is because the rotary drill has a large vibration, which will cause a large disturbance to the soil gas in the soil during the vibration process, resulting in inaccurate results when detecting soil gas. Therefore, when sampling soil or soil gas, a rotary drill and a direct pressure drill must be prepared separately, resulting in a high sampling cost. In addition, in the prior art, after the drill barrels of the rotary drill and the drill barrels of the direct pressure drill are pulled out of the stratum, they need to be manually hammered to remove the soil, which consumes manpower and time and is inefficient. Summary of the invention

[0004] In order to solve one or more of the above-mentioned defects in the prior art, the technical problem to be solved by the present invention is to provide a soil or soil gas combined sampling device, which can collect soil or soil gas, and can automatically store the soil samples after collection. After storage, it is convenient to detect various indicators of soil or soil gas at different depths, which is convenient for later analysis of the soil or soil gas.

[0005] To achieve the above object, the present invention provides a soil or soil gas combined sampling device, comprising: A sampling rack; A sampling assembly, the sampling assembly includes a rotatable lifting mechanism, the lifting mechanism is connected to the sampling frame, the lifting mechanism includes a lifting block, the lifting block has a mounting portion, a driving motor is fixed to the mounting portion, a driving gear is fixed to the motor rod of the driving motor, a sampling barrel is also rotatably connected to the mounting portion, a soil crushing portion is threadedly connected to the bottom of the sampling barrel, a plurality of crushing teeth are provided on the bottom surface of the soil crushing portion, an outer wall of the sampling barrel is also provided with a driven gear, the driving gear and the driven gear are meshed, an extension portion is provided at the top of the lifting mechanism, a material pushing structure is provided on the extension portion, and the material pushing structure corresponds to the sampling barrel; A material storage component, which includes a material storage plate, on which a plurality of material storage holes and a discharge hole are formed, the discharge hole corresponds to the sampling cylinder on the rotating lifting mechanism, the material storage hole is connected to a material storage cylinder, the bottom of the material storage cylinder is closed, and it includes a first half cylinder and a second half cylinder.

[0006] Furthermore, the sampling rack is movably connected to a movable base plate, a pulling handle is provided on the side of the movable base plate, and a movable wheel with a locking mechanism is also provided on the movable base plate.

[0007] Furthermore, the lifting mechanism is a threaded rod transmission mechanism, and is rotatably connected to the sampling rack via a rotating disk. The rotating disk is provided with two positioning holes, and the sampling rack is provided with corresponding matching holes. The positioning holes and matching holes are matched with the bayonet pins.

[0008] Furthermore, the pushing structure is a push rod motor, and a pushing head or a cleaning head is detachably connected to the pushing rod of the push rod motor.

[0009] Furthermore, the material storage plate is fixed on the sampling rack through a supporting column.

[0010] Furthermore, a bearing seat is fixed on the mounting portion, and the sampling tube includes a reduced diameter portion, which is connected to the bearing hole of the bearing seat, and a clamping ring is fixed to the top area of ​​the reduced diameter portion.

[0011] Furthermore, a torque sensor is provided on the motor rod of the driving motor.

[0012] Furthermore, the movable bottom plate is provided with a first snap-in hole and a second snap-in hole, the bottom of the sampling rack is provided with a plurality of supporting legs, the tail of the sampling rack is provided with a snap-in plate, and the movable snap-in pin connected to the snap-in plate is matched with the first snap-in hole, and when the sampling rack is transported, the sampling tube is matched with the second snap-in hole.

[0013] The present invention also includes a method for collecting soil using a soil or soil gas combined sampling device, which comprises the following steps: S1: Connecting the sampling frame of the sampling device to the mobile base plate, and moving the sampling frame to the area where soil collection is required, and then removing the sampling frame from the mobile base plate and fixing it to a suitable position; S2: starting the screw motor of the screw transmission mechanism of the sampling assembly, the screw motor drives the lifting block on it to move downward, during the movement, the driving motor drives the sampling cylinder to rotate, the soil is crushed and sampled through the sampling cylinder, when the sampling reaches the specified depth, the sampling cylinder is moved out through the screw transmission mechanism, during this process, if the torque sensor of the driving motor detects that the torque exceeds the set value, the driving motor stops driving the sampling cylinder to rotate; S3: rotating the rotating disk, the rotating disk drives the screw transmission mechanism to rotate 180 degrees, and a storage barrel is loaded into the discharge hole, the push rod motor is started, and the push rod of the push rod motor pushes the soil sample in the sampling barrel into the storage barrel. After the storage barrel is loaded with the soil sample, the storage barrel is moved to the storage hole, and the screw transmission mechanism is reset; S4: Move the soil or soil gas combined sampling device to the next area where soil sampling is required by moving the bottom plate again, and repeat the above operation; S5: After sampling is completed, when the soil sample needs to be tested, the second half of the storage cylinder is separated from the first half. At this time, the scale marks on the first half can represent the depth of the soil, which is convenient for later analysis and sorting.

[0014] The present invention also includes a method for collecting soil gas using a soil or soil gas combined sampling device, which comprises the following steps: S1: Connecting the sampling rack of the sampling device to the mobile base plate, and moving the sampling rack to the area where soil gas collection is required, and then removing the sampling rack from the mobile base plate and fixing it to a suitable position; S2: Start the screw motor of the screw transmission mechanism of the sampling component, and the screw motor drives the lifting block thereon to move downward. During this process, the drive motor is in a non-starting state. During the movement, if the lifting block cannot continue to move downward, it means that a stone is encountered. At this time, the drive motor is started, and the stone is crushed by the sampling tube. When the stone is crushed, the torque sensor of the drive motor detects that the torque becomes smaller. At this time, the drive motor stops running, and the screw transmission mechanism continues to run. When the sampling reaches the specified depth, the sampling tube is moved out through the screw transmission mechanism; S3: rotating the rotating disk, the rotating disk drives the screw transmission mechanism to rotate 180 degrees, and a storage barrel is loaded into the discharge hole, the push rod motor is started, and the push rod of the push rod motor pushes the soil sample in the sampling barrel into the storage barrel. After the storage barrel is loaded with the soil sample, the storage barrel is moved to the storage hole, and the screw transmission mechanism is reset; S4: Move the soil or soil gas combined sampling device to the next area where soil sampling is required by moving the bottom plate again, and repeat the above operation; S5: After sampling is completed, when the soil sample needs to be tested, the second half of the storage cylinder is separated from the first half. At this time, the scale marks on the first half can represent the depth of the soil, which is convenient for later analysis and sorting.

[0015] The beneficial effects of the present invention are: First, the soil or soil gas combined sampling device can collect soil or soil gas, and can automatically store the soil samples after collection. After storage, it is convenient to detect various indicators of soil or soil gas at different depths, which is convenient for later analysis of soil or soil gas; Second, in the process of collecting soil, it can be quickly collected by rotating the collection method; in the process of collecting soil gas, it can be collected by direct pressure collection, and the soil will not be disturbed during the collection process, avoiding a significant impact on the detection of soil gas; Third, through the rotation of the lifting mechanism, the collected soil can be directly pushed into the storage cylinder without disassembling the sampling cylinder, which greatly improves the sampling efficiency of soil or soil gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a structural diagram of another aspect of the present invention; Figure 3 It is a connection structure diagram of the sampling tube and the mounting part of the present invention; Figure 4 It is a structural diagram of a push rod connected to a push head of the present invention; Figure 5 It is a structural diagram of a cleaning head connected to a push rod of the present invention; Figure 6 It is a structural diagram of the sampling rack of the present invention; Figure 7 It is a connection structure diagram of the rotating disk and the rotating motor of the sampling rack of the present invention; Figure 8 It is a structural diagram of the first half of the storage barrel of the present invention after collecting soil samples; In the figure: 1, sampling rack; 2, lifting block; 3, mounting part; 4, driving motor; 5, driving gear; 6, sampling cylinder; 7, soil crushing part; 8, crushing teeth; 9, driven gear; 10, extension part; 11, storage plate; 12, storage hole; 13, discharge hole; 14, storage cylinder; 15, moving bottom plate; 16, moving wheel; 17, rotating disk; 18, push rod motor; 19, push head; 20, cleaning head; 21, bearing seat; 22, clamping ring; 23, reducing part; 24, first clamping hole; 25, second clamping hole; 26, clamping plate; 27, movable clamping pin; 28, pulling handle; 29, screw motor; 30, rotating motor; 31, mobile power supply; 32, positioning hole; 33, clamping pin; 34, first half cylinder; 35, soil sample; 36, scale; DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: See also Figure 1-8 A soil or soil gas combined sampling device is shown, comprising: A sampling rack 1, used to install the sampling component and the material storage component; A sampling assembly, the sampling assembly includes a rotatable lifting mechanism, the lifting mechanism is connected to the sampling frame 1, the lifting mechanism includes a lifting block 2, the lifting block 2 has a mounting portion 3, a driving motor 4 is fixed to the mounting portion 3, a driving gear 5 is fixed to the motor rod of the driving motor 4, and driving power is provided by the driving gear 5 on the motor rod of the driving motor 4. A sampling barrel 6 is also rotatably connected to the mounting portion 3, and a soil crushing portion 7 is threadedly connected to the bottom of the sampling barrel 6. After long-term use, if the soil crushing portion 7 is damaged, it can be replaced. The bottom surface of the soil crushing portion 7 is provided with a plurality of crushing teeth 8. The outer wall of the sampling barrel 6 is also provided with a driven gear 9, and the driving gear 5 is meshed with the driven gear 9. The top of the lifting mechanism is provided with an extension portion 10, and a material pushing structure is provided on the extension portion 10. The material pushing structure corresponds to the sampling barrel 6, so as to facilitate the rapid downward push of the soil sample 35 in the sampling barrel 6; A material storage component, which includes a material storage plate 11, and a plurality of material storage holes 12 and a discharge hole 13 are formed on the material storage plate 11, and the discharge hole 13 corresponds to the sampling cylinder 6 on the rotating lifting mechanism, and a material storage cylinder 14 is connected to the material storage hole 12, and the bottom of the material storage cylinder 14 is closed, and the inner hole of the material storage cylinder 14 is slightly larger than the inner hole of the sampling cylinder 6, and it includes a first half cylinder 34 and a second half cylinder, so that the soil sample in the sampling cylinder 6 can smoothly enter the material storage cylinder 14.

[0018] When the soil needs to be sampled, the present invention first moves the soil or soil gas combined sampling device to the area where sampling is required, then starts the lifting mechanism and the driving motor 4 connected to the lifting block 2 of the lifting mechanism, and the driving motor 4 drives the sampling barrel 6 to rotate. While rotating, the sampling barrel 6 descends, and the soil is collected by the crushing teeth on the soil crushing part of the sampling barrel 6. At this time, the sampling barrel 6 will collect the soil sample. After the collection, the lifting mechanism rises. At this time, the driving motor 4 stops running. At this time, the lifting mechanism is rotated so that the lifting mechanism rotates to the top of the storage assembly, and the sampling barrel and the storage barrel are connected. At this time, the pushing structure is started, and the pushing structure corresponds to the sampling barrel 6, so that the soil sample in the sampling barrel 6 is pushed The soil samples are put into the storage barrel 14, and then the lifting mechanism is reset, and the above actions are repeated until enough soil samples are collected, each storage barrel 14 stores a soil sample, and finally the storage barrel 14 is placed in the storage hole 12, waiting for the collection to be completed, and then entering the laboratory for unified testing, wherein the storage barrel 14 is divided into a first half barrel and a second half barrel, and a scale 36 can be set on the edge of the first half barrel, so that the depth of the soil sample can be observed, so that in the later analysis, the analysis can be carried out according to the depth (for example, after the heavy metal treatment of the soil, it is necessary to measure the content of heavy metals in the soil after treatment at different depths). In addition, the present invention can be powered by a 220V outdoor mobile power supply 31, and of course, a generator can also be used for power supply.

[0019] When the present invention needs to sample soil gas, it is different from collecting soil in that it only needs to drive the lifting mechanism to lift and lower for sampling, without driving the sampling tube 6 to rotate by the driving motor 4, so as to avoid disturbing the soil during the sampling process. The driving motor 4 only needs to be started when it touches a stone.

[0020] Furthermore, the sampling rack 1 is movably connected to a movable base plate 15, and a pulling handle 28 is provided on the side of the movable base plate 15, and a movable wheel 16 with a locking mechanism is also provided on the movable base plate 15. Specifically, the sampling rack 1 of the present invention is movably connected to the movable base plate 15, wherein the pulling handle 28 is provided on the side of the movable base plate 15, so that the sampling rack 1 can be moved more conveniently and quickly. In addition, the present invention can install a trajectory analysis device (such as a mobile phone with a GPS function) on the movable base plate 15, which can draw an accurate collection trajectory for the collection area, which is helpful for later data analysis. The present invention movably connects the sampling rack to the movable base plate, and when collecting soil samples, it can be removed so that the movable wheel will not move due to vibration during the collection process, thereby ensuring the accuracy of the collection.

[0021] Furthermore, the lifting mechanism is a screw transmission mechanism, and is rotatably connected to the sampling rack 1 through a rotating disk 17. The rotating disk 17 is provided with two positioning holes 32, and the sampling rack 1 is provided with matching holes corresponding thereto, and the positioning holes 32 and the matching holes are matched with the bayonet pins 33. Specifically, the lifting mechanism of the present invention is a screw transmission mechanism. When the screw motor 29 of the screw transmission mechanism is rotated, it can drive the lifting block 2 to move up and down. After the sampling is completed, the lifting mechanism can be rotated. When the lifting mechanism is rotated to a suitable angle, the rotating disk 17 is positioned through the positioning holes 32, the matching holes and the bayonet pins 33, so that the soil sample in the sampling tube 6 can be pushed into the storage tube. In addition, as Figure 7 As shown, a rotating motor 30 may also be installed at the bottom of the sampling rack 1 to achieve automatic rotation of the rotating disk 17 .

[0022] Furthermore, the pushing structure is a push rod motor 18, and a push head 19 or a cleaning head 20 is detachably connected to the push rod of the push rod motor 18. Specifically, the push rod structure of the present invention is a push rod motor 18, and a push head 19 is connected to the push rod on the push rod motor 18, so as to push the soil sample in the sampling tube 6. In addition, when the sampling tube 6 is used for a long time, it is necessary to clean the sampling tube 6, and the cleaning head 20 is directly replaced and connected to the push rod. When the sampling tube 6 needs to be cleaned, the sampling tube 6 can be driven to rotate, and the sampling tube moves up and down under the action of the screw transmission mechanism, and the brush on the cleaning head 20 on the push rod is used to clean the inner wall of the sampling tube 6.

[0023] Furthermore, the material storage plate 11 is fixed on the sampling rack 1 through a supporting column. Specifically, the material storage plate 11 of the present invention is fixed on the sampling rack 1 through a supporting column, so that the structure of the material storage plate 11 is more stable.

[0024] Furthermore, a bearing seat 21 is fixed on the mounting portion 3, and the sampling tube 6 includes a reduced diameter portion 23, and the reduced diameter portion 23 is connected to the bearing hole of the bearing seat 21, and a clamping ring 22 is fixed to the top area of ​​the reduced diameter portion 23. Specifically, a bearing seat 21 is fixed on the mounting portion 3 of the present invention, and the sampling tube 6 is rotatably connected to the inner ring of the bearing seat 21 through the reduced diameter portion 23, thereby realizing the rotational connection. At the same time, due to the setting of the reduced diameter portion 23, when the sampling tube 6 collects soil samples, other parts of the sampling tube 6 can play an abutment role. In addition, a clamping ring 22 is fixed on the reduced diameter portion 23, and the clamping ring 22 is matched with the inner ring of the bearing, so that the sampling tube 6 will not fall from the bearing seat 21. Of course, threading a clamping ring on the reduced diameter portion 23 can also achieve the same effect.

[0025] Furthermore, a torque sensor is provided on the motor rod of the driving motor 4. Specifically, a torque sensor (not shown) is provided on the motor rod of the driving motor 4 of the present invention to facilitate monitoring of the torque during the sampling process.

[0026] Furthermore, the movable bottom plate 15 is provided with a first snap-in hole 24 and a second snap-in hole 25, the bottom of the sampling rack has a plurality of supporting legs, the tail of the sampling rack 1 has a snap-in plate 26, and the movable snap-in pin 27 connected to the snap-in plate 26 is matched with the first snap-in hole 24. When the sampling rack 1 is transported, the sampling tube 6 is matched with the second snap-in hole 25. Specifically, the present invention is provided with a first snap-in hole 24 and a second snap-in hole 25 on the movable base plate 15. When the sampling rack 1 is transported, the sampling rack 1 is placed on the movable base plate 15. Specifically, a snap-in plate 26 is provided at the tail of the sampling rack 1, and the movable snap-in pin 27 on the snap-in plate 26 is matched with the first snap-in hole 24 of the movable base plate 15. In addition, when moving, the lifting mechanism can be started, and the lifting block 2 moves downward, and the sampling tube 6 thereon is snapped into the second snap-in hole 25. In this way, the positioning of the sampling rack 1 is achieved, so that it will not fall or shift during the movement. In addition, if the sampling rack needs to be placed on the movable base plate 15, the screw transmission mechanism can also be started to make the support legs at the front end of the sampling rack tilt upward, so that the movable base plate 15 can enter from the space between the two support legs at the front end and the ground. After entering, the lifting block 2 moves upward again. This method makes it more convenient for the sampling rack 1 to be placed on the movable base plate 15.

[0027] The present invention also includes a method for collecting soil using a soil or soil gas combined sampling device, which comprises the following steps: S1: connecting the sampling frame 1 of the sampling device to the mobile base plate 15, and moving the sampling frame 1 to the area where soil sampling is required, and then removing the sampling frame 1 from the mobile base plate 15 and fixing it to a suitable position; S2: Start the screw motor 29 of the screw transmission mechanism of the sampling assembly, and the screw motor 29 drives the lifting block 2 thereon to move downward. During the movement, the driving motor 4 drives the sampling cylinder 6 to rotate, and the soil is crushed and sampled through the sampling cylinder 6. When the sampling reaches the specified depth, the sampling cylinder 6 is moved out through the screw transmission mechanism. In this process, if the torque sensor of the driving motor 4 detects that the torque exceeds the set value (the driving motor can be controlled by the controller, or can be manually controlled by sending a signal by the controller), the driving motor 4 stops driving the sampling cylinder 6 to rotate; S3: rotating the rotating disk 17, the rotating disk 17 drives the screw transmission mechanism to rotate 180 degrees, and a storage barrel 14 is loaded into the discharge hole, and the push rod motor 18 is started. The push rod of the push rod motor 18 pushes the soil sample in the sampling barrel 6 into the storage barrel 14. After the storage barrel 14 is loaded with the soil sample, the storage barrel 14 is moved to the storage hole, and the screw transmission mechanism is reset; S4: Move the soil or soil gas combined sampling device to the next area where soil sampling is required by moving the bottom plate 15 again, and repeat the above operation; S5: After the sampling is completed, when the soil sample needs to be tested, the second half of the storage cylinder 14 is separated from the first half of the storage cylinder 34. At this time, the scale marks on the first half of the storage cylinder 34 can represent the depth of the soil, which is convenient for later analysis and sorting.

[0028] The present invention also includes a method for collecting soil gas using a soil or soil gas combined sampling device, which comprises the following steps: S1: Connecting the sampling rack of the sampling device to the mobile base plate 15, and moving the sampling rack to the area where soil gas collection is required, and then removing the sampling rack from the mobile base plate 15 and fixing it to a suitable position; S2: Start the screw motor 29 of the screw transmission mechanism of the sampling component, and the screw motor 29 drives the lifting block 2 thereon to move downward. During this process, the drive motor 4 is in an inactive state. During the movement, if the lifting block 2 cannot continue to move downward, it means that a stone is encountered. At this time, the drive motor 4 is started, and the stone is crushed by the sampling tube 6. When the stone is crushed, the torque sensor of the drive motor detects that the torque is less than a certain set value. At this time, the drive motor 4 stops running (the drive motor can be controlled by the controller, or it can be manually controlled by sending a signal by the controller), and the screw transmission mechanism continues to run. When the sampling reaches the specified depth, the sampling tube 6 is moved out by the screw transmission mechanism; S3: Rotate the rotating disk, the rotating disk drives the screw transmission mechanism to rotate 180 degrees, and load a storage barrel 14 into the discharge hole, start the push rod motor, and the push rod of the push rod motor pushes the soil sample in the sampling barrel 6 into the storage barrel 14. After the storage barrel 14 is loaded with the soil sample, the storage barrel 14 is moved to the storage hole, and the screw transmission mechanism is reset; S4: Move the soil or soil gas combined sampling device to the next area where soil sampling is required by moving the bottom plate 15 again, and repeat the above operation; S5: After the sampling is completed, when the soil sample needs to be tested, the second half of the storage cylinder 14 is separated from the first half of the storage cylinder 34. At this time, the scale marks on the first half of the storage cylinder 34 can represent the depth of the soil, which is convenient for later analysis and sorting.

[0029] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A soil or soil gas combined sampling device, It is characterized in that include: A sampling rack; A sampling assembly, the sampling assembly includes a rotatable lifting mechanism, the lifting mechanism is connected to the sampling frame, the lifting mechanism includes a lifting block, the lifting block has a mounting portion, a driving motor is fixed to the mounting portion, a driving gear is fixed to the motor rod of the driving motor, a sampling barrel is also rotatably connected to the mounting portion, a soil crushing portion is threadedly connected to the bottom of the sampling barrel, a plurality of crushing teeth are provided on the bottom surface of the soil crushing portion, an outer wall of the sampling barrel is also provided with a driven gear, the driving gear and the driven gear are meshed, an extension portion is provided at the top of the lifting mechanism, a material pushing structure is provided on the extension portion, and the material pushing structure corresponds to the sampling barrel; A material storage component, which includes a material storage plate, on which a plurality of material storage holes and a discharge hole are formed, the discharge hole corresponds to the sampling cylinder on the rotating lifting mechanism, the material storage hole is connected to a material storage cylinder, the bottom of the material storage cylinder is closed, and it includes a first half cylinder and a second half cylinder.

2. The soil or soil gas combined sampling device according to claim 1, It is characterized in that The sampling rack is movably connected to a movable bottom plate, a pulling handle is provided on the side of the movable bottom plate, and a movable wheel with a locking mechanism is also provided on the movable bottom plate.

3. The soil or soil gas combined sampling device according to claim 2, It is characterized in that The lifting mechanism is a threaded rod transmission mechanism, and is rotatably connected to the sampling rack through a rotating disk. The rotating disk is provided with two positioning holes, and the sampling rack is provided with matching holes corresponding thereto. The positioning holes and matching holes are matched with the bayonet pins.

4. The soil or soil gas combined sampling device according to claim 3, It is characterized in that The pushing structure is a push rod motor, and a pushing head or a cleaning head is detachably connected to the pushing rod of the push rod motor.

5. The soil or soil gas combined sampling device according to claim 4, It is characterized in that The material storage plate is fixed on the sampling frame through a supporting column.

6. The soil or soil gas combined sampling device according to claim 5, It is characterized in that A bearing seat is fixed on the mounting portion, and the sampling tube includes a reduced diameter portion, which is connected to the bearing hole of the bearing seat, and a clamping ring is fixed on the top area of ​​the reduced diameter portion.

7. The soil or soil gas combined sampling device according to claim 6, It is characterized in that A torque sensor is arranged on the motor rod of the driving motor.

8. The soil or soil gas combined sampling device according to claim 7, It is characterized in that The movable bottom plate is provided with a first snap-in hole and a second snap-in hole, the bottom of the sampling rack is provided with a plurality of supporting legs, the tail of the sampling rack is provided with a snap-in plate, and the movable snap-in pin connected to the snap-in plate is matched with the first snap-in hole, and when the sampling rack is transported, the sampling tube is matched with the second snap-in hole.

9. A method for collecting soil using the soil or soil gas combined sampling device as claimed in claim 8, It is characterized in that The steps include: S1: Connecting the sampling frame of the sampling device to the mobile base plate, and moving the sampling frame to the area where soil collection is required, and then removing the sampling frame from the mobile base plate and fixing it to a suitable position; S2: starting the screw motor of the screw transmission mechanism of the sampling assembly, the screw motor drives the lifting block on it to move downward, during the movement, the driving motor drives the sampling cylinder to rotate, the soil is crushed and sampled through the sampling cylinder, when the sampling reaches the specified depth, the sampling cylinder is moved out through the screw transmission mechanism, during this process, if the torque sensor of the driving motor detects that the torque exceeds the set value, the driving motor stops driving the sampling cylinder to rotate; S3: rotating the rotating disk, the rotating disk drives the screw transmission mechanism to rotate 180 degrees, and a storage barrel is loaded into the discharge hole, the push rod motor is started, and the push rod of the push rod motor pushes the soil sample in the sampling barrel into the storage barrel. After the storage barrel is loaded with the soil sample, the storage barrel is moved to the storage hole, and the screw transmission mechanism is reset; S4: Move the soil or soil gas combined sampling device to the next area where soil sampling is required by moving the bottom plate again, and repeat the above operation; S5: After the sampling is completed, when the soil sample needs to be tested, the second half of the storage cylinder is separated from the first half. At this time, the scale mark on the first half can represent the depth of the soil, which is convenient for later analysis and sorting.

10. A method for collecting soil gas using the soil or soil gas combined sampling device as claimed in claim 8, It is characterized in that The steps include: S1: Connecting the sampling rack of the sampling device to the mobile base plate, and moving the sampling rack to the area where soil gas collection is required, and then removing the sampling rack from the mobile base plate and fixing it to a suitable position; S2: Start the screw motor of the screw transmission mechanism of the sampling component, and the screw motor drives the lifting block thereon to move downward. During this process, the drive motor is in a non-starting state. During the movement, if the lifting block cannot continue to move downward, it means that a stone is encountered. At this time, the drive motor is started, and the stone is crushed by the sampling tube. When the stone is crushed, the torque sensor of the drive motor detects that the torque becomes smaller. At this time, the drive motor stops running, and the screw transmission mechanism continues to run. When the sampling reaches the specified depth, the sampling tube is moved out through the screw transmission mechanism; S3: rotating the rotating disk, the rotating disk drives the screw transmission mechanism to rotate 180 degrees, and a storage barrel is loaded into the discharge hole, the push rod motor is started, and the push rod of the push rod motor pushes the soil sample in the sampling barrel into the storage barrel. After the storage barrel is loaded with the soil sample, the storage barrel is moved to the storage hole, and the screw transmission mechanism is reset; S4: Move the soil or soil gas combined sampling device to the next area where soil sampling is required by moving the bottom plate again, and repeat the above operation; S5: After the sampling is completed, when the soil sample needs to be tested, the second half of the storage cylinder is separated from the first half. At this time, the scale mark on the first half can represent the depth of the soil, which is convenient for later analysis and sorting.

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