Soil carbon dioxide gas collecting device

Abstract

The invention belongs to the field of gas collection, and particularly relates to a soil carbon dioxide gas collection device which comprises a crawler chassis, a top cover frame is mounted on the top surface of the crawler chassis, a supporting frame is mounted in the middle of the top cover frame, and a through hole penetrating to the bottom surface is formed in the top surface of the supporting frame. Through the arrangement, the functions of automatic well drilling and segmented collection of soil gas at different depths are achieved, the gas collection work of a large number of collection points can be autonomously completed by the equipment only by carrying a navigation system, and the equipment is simple in structure, convenient to use and high in efficiency. After soil at one position is collected, the drill rod moves upwards and moves to soil needing to be detected at the other position under the driving of navigation and the crawler chassis for collection work, collected gas is stored by the detection box in batches, and full-automatic collection work of large-batch collection points can be achieved.

Description

Technical Field

[0001] The invention belongs to the field of gas collection, in particular to a soil carbon dioxide gas collection device. Background Art

[0002] By collecting soil carbon dioxide gas, the soil respiration rate can be measured, that is, the amount of carbon dioxide released by the soil per unit time. Soil respiration is an important part of the soil carbon cycle, reflecting the metabolic activities of soil microorganisms and plant roots. Studying the emission law of soil carbon dioxide gas can reveal the influence mechanism of environmental factors such as soil temperature, humidity, organic matter content, and microbial activity on soil respiration, and provide a theoretical basis for regulating soil carbon cycle.

[0003] There are many methods for collecting soil carbon dioxide, including box method, micrometeorological method, gas well method, etc. The gas well method is to install gas collection devices at different depths in the soil profile, and then connect them to the ground with a hose, and collect gas with a syringe or directly connect to the carbon dioxide analysis equipment.

[0004] When using the gas well method to collect soil carbon dioxide gas at different depths, it is necessary to drill a hole of the required depth in the soil layer, and then move the end of the collection pipe to the bottom of the hole for gas collection. This method requires drilling holes of different depths, which takes a long time. When there are many collection points, it is necessary to constantly carry the device for transfer, resulting in a large labor cost.

[0005] To this end, the present invention provides a soil carbon dioxide gas collection device. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: a soil carbon dioxide gas collection device described in the present invention comprises a crawler chassis, a top cover frame is installed on the top surface of the crawler chassis, a support frame is installed in the middle of the top cover frame, a through hole is opened on the top surface of the support frame and penetrates to the bottom surface, a drill rod that can move up and down is arranged in the through hole, the drill rod is arranged in a vertical shape, a driving motor for controlling the rotation of the drill rod is installed on the top of the drill rod, a transmission groove is opened in the middle of the drill rod, two gas valves are installed on the outer side of the drill rod near the bottom, a negative pressure pump is installed on the top surface of the top cover frame, the negative pressure pump is connected to the transmission groove through a transmission pipe, and a detection box is connected between the negative pressure pump and the transmission pipe; Place the crawler chassis on the soil surface, and drive the entire device to move through the crawler chassis. The crawler chassis can adapt to soil surfaces that are not particularly flat, allowing the device to move normally. After moving to the detection position, start the drive motor to control the drill rod to start rotating, and control the drive motor to slowly sink, allowing the drill rod to drill into the soil. When the bottom of the drill rod drills to a predetermined depth, turn off the drive motor, start the negative pressure pump to generate negative pressure, and the negative pressure is transmitted to the transmission slot through the transmission pipe, thereby generating negative pressure on the surface of the gas valve, and then collecting soil air at that depth. The gas valve can only allow gas to pass through and can block the soil. The gas valve is installed at the center of the drill rod, and the outer spiral piece in the center of the drill rod will push away the soil, reducing the problem of soil blocking the gas valve. When the collection is completed, , start the drive motor to drive the drill rod to continue drilling, move the gas valve to a lower position, and collect gas again. Through this setting, the function of automatic drilling and segmented collection of soil gas at different depths is realized. By simply installing the navigation system, the equipment can independently complete the gas collection work of a large number of collection points. After collecting the soil in one place, the drill rod moves up, and moves to another place where the soil needs to be tested under the drive of the navigation and crawler chassis to collect the soil again. The collected gas is stored in batches in the detection box, which can realize the fully automatic collection of a large number of collection points. The carbon dioxide detection module can also be directly installed in the detection box to directly perform on-site detection of the air extracted at different depths of the detection point. After the detection is completed, the gas is directly discharged and the detection data is left.

[0008] Preferably, a sleeve ring is slidably engaged with the outer side of the drill rod near the top, the inner ring of the sleeve ring is open, and a plurality of ventilation holes connected with the transmission groove are opened near the top of the outer side of the drill rod, and the transmission pipe is connected with the sleeve ring. During the rotation and sinking of the drill rod, the outer sleeve ring is always slidably engaged with the outer side of the drill rod and rises and falls with the drill rod, and the transmitted gas will enter the sleeve ring along the ventilation hole, and then be transmitted from the sleeve ring to the transmission pipe, thereby ensuring the smooth transmission process of the gas.

[0009] Preferably, two clamping arms are fixedly connected to the top of the support frame, and the two clamping arms are symmetrically arranged. Both sides of the drive motor are slidably clamped with the clamping arms. The bottom of the drill rod is set at a sharp angle. Under the action of gravity, the bottom of the drill rod fits with the soil. As the drive motor drives, the spiral pieces on the surface of the drill rod will continuously drill into the bottom of the soil, so that the drill rod sinks smoothly. When the drill rod needs to be pulled out, the drill rod is rotated in the opposite direction, and the spiral pieces rotating in the opposite direction will push the drill rod outward, cooperating with the restraint of the clamping arms to ensure that the drill rod and the drive motor can move vertically smoothly.

[0010] Preferably, two connecting tubes are fixedly connected to the outer side of the sleeve ring, one of which is connected to the inside of the sleeve ring. The sleeve ring is slidably clamped on the outer side of the clamping arm. The connecting tube connected to the sleeve ring is fixedly connected and connected to the transmission tube. The connecting tube is sleeved on the clamping arm, and the sleeve ring is fixed to the connecting tube. When the drill rod rotates, the sleeve ring will still rise and fall with the drill rod, but will not rotate. At the same time, the airflow is transmitted to the transmission tube through the sleeve ring and the connecting tube. The transmission tube is spiral and can be pulled out and shortened. Through this arrangement, the transmission tube is always in a relatively stable state, ensuring the smooth transmission of gas.

[0011] Preferably, four electric rollers are installed on the top of the top cover frame, and steel cables are wound around the outer sides of the electric rollers. The tops of the steel cables are fixedly connected to the tops of the driving motors. To ensure the smooth rising of the drill rod, when the driving motor rotates the drill rod in the opposite direction, the electric rollers reel in the steel cables. The steel cables wrap around the top of the clamping arms, and pull the driving motor from above. The reverse rotation of the drill rod pushes the drive motor upward, and the drill rod can be smoothly removed from the soil. At the same time, as the steel cables are pulled, the bottom of the drill rod can be kept away from the soil, and the device can be moved smoothly.

[0012] Preferably, two symmetrically arranged binding rods are fixed to the top of the top cover frame, and the binding rods are slidably connected to the outer side of the driving motor. A series ring is fixed between the two binding rods and the tops of the two clamping arms. The outer side of the series ring is rotatably connected to four guide wheels. The steel cable portion is sleeved on the outer side of the guide wheel, and the binding rods cooperate with the clamping arms to bind the four sides of the driving motor, further improving the stable up and down sliding process of the driving motor. At the same time, the steel cable can pass over the top of the guide wheel to ensure the change of the pulling force direction of the steel cable. At the same time, under this arrangement, the outer side of the drill rod is surrounded by multiple parts, which effectively reduces the problem of safety hazards caused by external objects accidentally touching the drill rod.

[0013] Preferably, a spirit level is installed on the inner side of the support frame, and hydraulic arms are installed at both ends of the support frame. The spirit level is communicatively connected with the hydraulic arms. In order to ensure that the equipment can drill holes perpendicular to the ground, the spirit level inside the support frame can measure its own horizontal state after the device stops. When the device as a whole is more inclined, the hydraulic arm is controlled to lift one end of the entire device upward, thereby changing its own horizontal state. After adjusting to horizontal, drilling work is carried out to ensure that the drilling depth is the same as the predetermined depth and will not be affected by the inclination of the equipment.

[0014] Preferably, the hydraulic arm is composed of two metal rods with adjustable angles, and a support block is fixedly connected to the end of the hydraulic arm. The support block is arranged in a polyhedron shape, and the polyhedron support block at the bottom of the hydraulic arm can be well embedded in the soil. Then, the two metal rods with adjustable angles change their angles, thereby changing the degree of tilting of the end of the equipment until the measurement value of the level reaches the requirement.

[0015] Preferably, two rotatable cleaning disks are provided at the bottom of the through hole, and the two cleaning disks are symmetrically arranged. During the drilling process, the drill rod will bring part of the underground soil upward, and the cleaning disks will rotate to push the soil accumulated at the bottom of the equipment to both sides, so that the soil will not push the bottom center of the equipment upward, allowing the drilling process to proceed smoothly.

[0016] Preferably, a plurality of scrapers are fixedly connected to the surface of the cleaning disk, and the plurality of scrapers are arranged equidistantly in a ring shape. The cleaning disk is installed on the same side of the hydraulic arm. The multiple scrapers of the cleaning disk can continuously push the soil in the center to both ends during the rotation process. When the hydraulic arms at both ends are lifted up in the middle of the equipment, they can still contact the soil and transfer the equipment outward, thereby ensuring that the equipment can work normally.

[0017] The beneficial effects of the present invention are as follows: 1. A soil carbon dioxide gas collection device described in the present invention places a crawler chassis on the soil surface, and drives the entire device to move by driving the crawler chassis. The crawler chassis can adapt to soil surfaces that are not particularly flat, allowing the device to move normally. After moving to the detection position, the drive motor is started to control the drill rod to start rotating, and the drive motor is controlled to slowly sink, allowing the drill rod to drill into the soil. When the bottom of the drill rod drills to a predetermined depth, the drive motor is turned off, and the negative pressure pump is started to generate negative pressure, which is transmitted to the transmission slot through the transmission pipe, thereby generating negative pressure on the surface of the gas valve, and then collecting soil air at that depth. The gas valve can only allow gas to pass through and can block soil. The installation position of the gas valve is the center of the drill rod, and the outer spiral sheet of the center of the drill rod will repel soil to reduce soil blocking the gas. Valve problem, when the collection is completed, start the drive motor to drive the drill rod to continue drilling, let the gas valve move to a lower position, and collect gas again. Through this setting, the function of automatic drilling and segmented collection of soil gas at different depths is realized. Only by installing the navigation system, the equipment can independently complete the gas collection work of a large number of collection points. After the soil is collected in one place, the drill rod moves up, and moves to another place that needs to be tested under the drive of navigation and crawler chassis to collect soil and then collect gas. The collected gas is stored in batches in the detection box, which can realize the fully automatic collection of a large number of collection points. The carbon dioxide detection module can also be directly installed in the detection box to directly perform on-site detection of the air extracted at different depths of the detection point. After the detection is completed, the gas is directly discharged and the detection data is left.

[0018] 2. In the soil carbon dioxide gas collection device described in the present invention, during the rotation and sinking of the drill rod, the outer sleeve ring is always slid and clamped on the outer side of the drill rod, and rises and falls with the drill rod, and the transmitted gas will enter the sleeve ring along the ventilation hole, and then be transmitted from the sleeve ring to the transmission tube, thereby ensuring the smooth transmission of the gas. The bottom of the drill rod is set with a sharp angle, and under the action of gravity, the bottom of the drill rod fits with the soil. With the drive of the drive motor, the spiral blades on the surface of the drill rod will continuously drill into the bottom of the soil, so that the drill rod sinks smoothly. When the drill rod needs to be pulled out, the drill rod is rotated in the opposite direction, and the spiral blades rotating in the opposite direction will push the drill rod outward, cooperating with the restraint of the clamping arm to ensure that the drill rod and the drive motor can move vertically smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 is a stereogram of the present invention; Figure 2 It is a three-dimensional diagram of the top cover frame of the present invention; Figure 3 is a three-dimensional view of the cleaning disc of the present invention; Figure 4 is a three-dimensional diagram of a drive motor of the present invention; Figure 5 is a stereogram of the sleeve ring of the present invention; Figure 6 is a cross-sectional view of the sleeve ring and the connecting pipe of the present invention; Figure 7 is a stereoscopic view of the clamping arm and the restraining rod of the present invention; In the figure: 1. top cover frame; 2. crawler chassis; 3. cleaning plate; 4. hydraulic arm; 5. detection box; 6. drive motor; 7. drill rod; 8. transmission pipe; 9. support block; 10. support frame; 11. through hole; 12. negative pressure pump; 13. guide wheel; 14. steel cable; 15. sleeve ring; 16. restraining rod; 17. clamping arm; 18. connecting pipe; 19. ventilation hole; 20. transmission slot; 21. gas valve; 22. series ring. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0022] like Figures 1 to 7As shown, a soil carbon dioxide gas collection device according to an embodiment of the present invention comprises a crawler chassis 2, a top cover frame 1 is installed on the top surface of the crawler chassis 2, a support frame 10 is installed in the middle of the top cover frame 1, a through hole 11 is opened on the top surface of the support frame 10 and penetrates to the bottom surface, a drill rod 7 that can move up and down is arranged in the through hole 11, the drill rod 7 is arranged vertically, a driving motor 6 for controlling the rotation of the drill rod 7 is installed on the top of the drill rod 7, a transmission groove 20 is opened in the middle of the drill rod 7, two gas valves 21 are installed on the outer side of the drill rod 7 near the bottom, a negative pressure pump 12 is installed on the top surface of the top cover frame 1, the negative pressure pump 12 is connected to the transmission groove 20 through a transmission pipe 8, and a detection box 5 is connected between the negative pressure pump 12 and the transmission pipe 8; The crawler chassis 2 is placed on the soil surface, and the whole device is moved by the drive of the crawler chassis 2. The crawler chassis 2 can adapt to soil surfaces that are not particularly flat, allowing the device to move normally. After moving to the detection position, the drive motor 6 is started to control the drill rod 7 to start rotating, and the drive motor 6 is controlled to slowly sink, allowing the drill rod 7 to drill into the soil. When the bottom of the drill rod 7 drills into the predetermined depth, the drive motor 6 is turned off, and the negative pressure pump 12 is started to generate negative pressure. The negative pressure is transmitted to the transmission groove 20 through the transmission pipe 8, so that negative pressure is generated on the surface of the gas valve 21, and then the soil air at this depth is collected. The gas valve 21 can only allow gas to pass through and can block the soil. The installation position of the gas valve 21 is the center position of the drill rod 7, and the outer spiral sheet of the center of the drill rod 7 will repel the soil, reducing the problem of soil blocking the gas valve 21. When the collection is completed, the drive motor 6 is started to drive the drill rod 7 to continue drilling, so that the gas valve 21 moves to a lower position and the gas is collected again. Through this setting, the function of automatic drilling and segmented collection of soil gas at different depths is realized. It only needs to be equipped with a navigation system to allow the equipment to independently complete the gas collection work of a large number of collection points; after the soil is collected at one place, the drill rod 7 moves up, and under the drive of the navigation and crawler chassis 2, it moves to another place where the soil needs to be tested and then collects the soil. The collected gas is stored in batches in the detection box 5, which can realize the fully automatic collection work of a large number of collection points; the carbon dioxide detection module can also be directly installed in the detection box 5, and the air extracted at different depths of the detection point can be directly tested on site. After the detection is completed, the gas is directly discharged and the detection data is left.

[0023] A sleeve ring 15 is slidably engaged with the outer side of the drill rod 7 near the top, and the inner ring of the sleeve ring 15 is open. A plurality of ventilation holes 19 connected to the transmission groove 20 are opened near the top of the outer side of the drill rod 7, and the transmission pipe 8 is connected to the sleeve ring 15; During operation, as the drill rod 7 rotates and sinks, the outer sleeve ring 15 always slides and clamps on the outer side of the drill rod 7, and rises and falls with the drill rod 7, and the transmitted gas will enter the sleeve ring 15 along the ventilation hole 19, and then be transmitted from the sleeve ring 15 to the transmission pipe 8, ensuring the smooth transmission process of the gas.

[0024] The top of the support frame 10 is fixedly connected with two clamping arms 17, and the two clamping arms 17 are symmetrically arranged, and both sides of the driving motor 6 are slidably clamped with the clamping arms 17; During operation, the bottom of the drill rod 7 is set with a sharp angle. Under the action of gravity, the bottom of the drill rod 7 fits with the soil. With the drive of the drive motor 6, the spiral blades on the surface of the drill rod 7 will continue to drill into the bottom of the soil, allowing the drill rod 7 to sink smoothly. When the drill rod 7 needs to be pulled out, the drill rod 7 is rotated in the opposite direction, and the spiral blades rotating in the opposite direction will push the drill rod 7 outward, cooperating with the restraint of the clamping arm 17 to ensure that the drill rod 7 and the drive motor 6 can move vertically smoothly.

[0025] Two connecting pipes 18 are fixedly connected to the outer side of the sleeve ring 15, one of which is connected to the inner side of the sleeve ring 15. The sleeve ring 15 is slidably connected to the outer side of the connecting arm 17, and the connecting pipe 18 connected to the sleeve ring 15 is fixedly connected to and connected to the transmission pipe 8. During operation, the connecting tube 18 is sleeved on the clamping arm 17, and the sleeve ring 15 is fixed to the connecting tube 18. In this way, when the drill rod 7 rotates, the sleeve ring 15 will still rise and fall with the drill rod 7, but will not rotate. At the same time, the airflow passes through the sleeve ring 15 and the connecting tube 18 and is then transmitted to the transmission tube 8. The transmission tube 8 is spiral and can be pulled out and shortened. Through this arrangement, the transmission tube 8 is always in a relatively stable state, ensuring the smooth transmission of gas.

[0026] Four electric rollers are installed on the top of the top cover frame 1, and steel cables 14 are wound around the outer sides of the electric rollers. The tops of the steel cables 14 are fixedly connected to the tops of the driving motors 6. During operation, in order to ensure the smooth rise of the drill rod 7, when the drive motor 6 rotates the drill rod 7 in the reverse direction, the electric roller reels the steel cable 14 at the same time. The steel cable 14 wraps around the top of the clamping arm 17, pulling the drive motor 6 from above, and cooperating with the reverse rotation of the drill rod 7 to push itself upward, the drill rod 7 can be smoothly removed from the soil. At the same time, as the steel cable 14 is pulled, the bottom of the drill rod 7 can be kept away from the soil, allowing the device to move smoothly.

[0027] The top of the top cover frame 1 is fixedly connected with two symmetrically arranged tie rods 16, and the tie rods 16 are slidably connected to the outer side of the driving motor 6. A series ring 22 is fixedly connected between the two tie rods 16 and the tops of the two clamping arms 17. The outer side of the series ring 22 is rotatably connected with four guide wheels 13, and the steel cable 14 is partially sleeved on the outer side of the guide wheel 13. During operation, the restraining rod 16 cooperates with the clamping arm 17 to restrain the four sides of the driving motor 6, further improving the stable up and down sliding process of the driving motor 6. At the same time, the steel cable 14 can pass through the top of the guide wheel 13 to ensure the change of the pulling force direction of the steel cable 14. At the same time, this setting makes the outer side of the drill rod 7 surrounded by multiple parts, which effectively reduces the problem of safety hazards caused by external objects accidentally touching the drill rod 7.

[0028] A level is installed on the inner side of the support frame 10, and hydraulic arms 4 are installed at both ends of the support frame 10, and the level is communicatively connected with the hydraulic arms 4; During operation, in order to ensure that the equipment can drill holes perpendicular to the ground, the spirit level inside the support frame 10 can measure its own horizontal state after the device stops. When the device as a whole is relatively tilted, the hydraulic arm 4 is controlled to lift one end of the entire device upward, thereby changing its own horizontal state. After adjusting to a horizontal state, drilling work can be carried out to ensure that the drilling depth is the same as the predetermined depth and will not be affected by the inclination of the equipment.

[0029] The hydraulic arm 4 is composed of two metal rods with adjustable angles. The end of the hydraulic arm 4 is fixedly connected with a support block 9, and the support block 9 is arranged in a polyhedron shape; During operation, the polyhedral support block 9 at the bottom of the hydraulic arm 4 can be well embedded in the soil, and then the two adjustable metal rods change their angles, thereby changing the degree of tilting of the end of the equipment until the measurement value of the level meter meets the requirements.

[0030] Two rotatable cleaning discs 3 are disposed at the bottom of the through hole 11, and the two cleaning discs 3 are symmetrically disposed; During operation, the drill rod 7 will bring out part of the underground soil upward during the drilling process, and the cleaning disk 3 will rotate to push the soil accumulated at the bottom of the equipment to both sides, so that the soil will not lift the bottom center of the equipment upward, allowing the drilling process to proceed smoothly.

[0031] A plurality of scrapers are fixedly connected to the surface of the cleaning disc 3, and the plurality of scrapers are arranged in a circular shape and at equal intervals. The cleaning disc 3 is installed on the same side of the hydraulic arm 4; During operation, the multiple scrapers of the cleaning disc 3 can continuously push the soil in the center to both ends during rotation. When the hydraulic arms 4 at both ends are lifted up in the middle of the equipment, they can still contact the soil and transfer the equipment outward to ensure that the equipment can work normally.

[0032] During operation, the crawler chassis 2 is placed on the soil surface, and the entire device is moved by the drive of the crawler chassis 2. The crawler chassis 2 can adapt to soil surfaces that are not particularly flat, allowing the device to move normally. After moving to the detection position, the drive motor 6 is started to control the drill rod 7 to start rotating, and the drive motor 6 is controlled to slowly sink, allowing the drill rod 7 to drill into the soil. When the bottom of the drill rod 7 drills into a predetermined depth, the drive motor 6 is turned off, and the negative pressure pump 12 is started to generate negative pressure, which is transmitted to the transmission groove 20 through the transmission pipe 8, thereby generating negative pressure on the surface of the gas valve 21, and then collecting the soil air at that depth. The gas valve 21 can only allow gas to pass through and can block the soil. The installation position of the gas valve 21 is the center position of the drill rod 7, and the outer spiral sheet of the center of the drill rod 7 will displace the soil to reduce the soil blocking the gas valve 21. The problem is that after the collection is completed, the driving motor 6 is started to drive the drill rod 7 to continue drilling, so that the gas valve 21 moves to a lower position and the gas is collected again. Through this setting, the function of automatic drilling and segmented collection of soil gas at different depths is realized. It only needs to be equipped with a navigation system to allow the equipment to independently complete the gas collection work of a large number of collection points. After the soil is collected at one place, the drill rod 7 moves up, and under the drive of the navigation and crawler chassis 2, it moves to another place where the soil needs to be tested and then collects the soil. The collected gas is stored in batches by the detection box 5, which can realize the full-automatic collection of a large number of collection points. It is also possible to directly carry a carbon dioxide detection module in the detection box 5 to directly perform on-site detection of the air extracted at different depths of the detection point. After the detection is completed, the gas is directly discharged and the detection data is left. During the rotation and sinking of the drill rod 7, the outer sleeve ring 15 is always slidably engaged with the outer side of the drill rod 7 and rises and falls with the drill rod 7, and the transmitted gas enters the sleeve ring 15 along the ventilation hole 19, and then is transmitted from the sleeve ring 15 to the transmission pipe 8, thereby ensuring the smooth transmission process of the gas; The bottom of the drill rod 7 is set with a sharp angle. Under the action of gravity, the bottom of the drill rod 7 fits with the soil. With the drive of the drive motor 6, the spiral pieces on the surface of the drill rod 7 will continue to drill into the bottom of the soil, so that the drill rod 7 sinks smoothly. When the drill rod 7 needs to be pulled out, the drill rod 7 is rotated in the opposite direction, and the spiral pieces rotating in the opposite direction will push the drill rod 7 outward, and cooperate with the restraint of the clamping arm 17 to ensure that the drill rod 7 and the drive motor 6 can move vertically smoothly. By sleeve-connecting the connecting pipe 18 on the clamping arm 17, and the sleeve ring 15 being fixed to the connecting pipe 18, when the drill rod 7 rotates, the sleeve ring 15 will still rise and fall with the drill rod 7, but will not rotate. At the same time, the airflow passes through the sleeve ring 15 and the connecting pipe 18 and is then transferred to the transmission pipe 8. The transmission pipe 8 is spiral and can be pulled out and shortened. Through this arrangement, the transmission pipe 8 is always in a relatively stable state, ensuring the smooth transmission of gas. In order to ensure the smooth rise of the drill rod 7, when the drive motor 6 rotates the drill rod 7 in the reverse direction, the electric roller reels the steel cable 14, and the steel cable 14 wraps around the top of the clamping arm 17, pulling the drive motor 6 from above, and the drill rod 7 rotates in the reverse direction to push itself upward, so that the drill rod 7 can be smoothly separated from the soil. At the same time, with the pulling of the steel cable 14, the bottom of the drill rod 7 can be kept away from the soil, so that the device can be moved smoothly; The restraining rod 16 cooperates with the clamping arm 17 to restrain the four sides of the driving motor 6, further improving the stable sliding process of the driving motor 6 up and down. At the same time, the steel cable 14 can pass through the top of the guide wheel 13 to ensure the change of the pulling force direction of the steel cable 14. At the same time, the outer side of the drill rod 7 is surrounded by multiple parts under this arrangement, which effectively reduces the problem of safety hazards caused by foreign objects accidentally touching the drill rod 7; In order to ensure that the equipment can drill vertically to the ground, the level gauge inside the support frame 10 can measure its own horizontal state after the device stops. When the device as a whole is relatively tilted, the hydraulic arm 4 is controlled to lift one end of the entire device upward, thereby changing its own horizontal state. After adjusting to the horizontal state, the drilling work is carried out to ensure that the drilling depth is the same as the predetermined depth and will not be affected by the inclination of the equipment; The polyhedral support block 9 at the bottom of the hydraulic arm 4 can be well embedded in the soil, and then the two adjustable metal rods change their angles, thereby changing the tilting degree of the end of the equipment until the measurement value of the level meter reaches the requirement; During the drilling process, the drill rod 7 will bring part of the underground soil upwards, and the cleaning disc 3 will rotate to push the soil accumulated at the bottom of the equipment to both sides, so that the soil will not push the bottom center of the equipment upwards, allowing the drilling process to proceed smoothly; The multi-scraper setting of the cleaning disc 3 can continuously push the soil in the center to both ends during the rotation process. When the hydraulic arms 4 at both ends are lifted up in the middle of the equipment, they can still contact the soil and transfer the equipment outward to ensure that the equipment can work normally.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A soil carbon dioxide gas collection device, characterized in that: The invention comprises a crawler chassis (2), a top cover frame (1) is installed on the top surface of the crawler chassis (2), a support frame (10) is installed in the middle of the top cover frame (1), a through hole (11) is opened on the top surface of the support frame (10) and penetrates to the bottom surface, a drill rod (7) that can move up and down is arranged in the through hole (11), the drill rod (7) is arranged in a vertical shape, a driving motor (6) for controlling the rotation of the drill rod (7) is installed on the top of the drill rod (7), a transmission groove (20) is opened in the middle of the drill rod (7), two gas valves (21) are installed on the outer side of the drill rod (7) near the bottom, a negative pressure pump (12) is installed on the top surface of the top cover frame (1), the negative pressure pump (12) and the transmission groove (20) are connected through a transmission pipe (8), and a detection box (5) is connected between the negative pressure pump (12) and the transmission pipe (8).

2. A soil carbon dioxide gas collection device according to claim 1, characterized in that: A sleeve ring (15) is slidably engaged with the outer side of the drill rod (7) near the top, and the inner ring of the sleeve ring (15) is open. A plurality of ventilation holes (19) connected to the transmission groove (20) are provided on the outer side of the drill rod (7) near the top, and the transmission pipe (8) is connected to the sleeve ring (15).

3. A soil carbon dioxide gas collection device according to claim 2, characterized in that: Two clamping arms (17) are fixedly connected to the top of the support frame (10), the two clamping arms (17) are symmetrically arranged, and both sides of the drive motor (6) are slidably clamped to the clamping arms (17).

4. A soil carbon dioxide gas collection device according to claim 3, characterized in that: Two connecting pipes (18) are fixedly connected to the outside of the sleeve ring (15), one of which is connected to the inside of the sleeve ring (15). The sleeve ring (15) is slidably clamped on the outside of the clamping arm (17), and the connecting pipe (18) connected to the sleeve ring (15) is fixedly connected to and connected to the transmission pipe (8).

5. A soil carbon dioxide gas collection device according to claim 4, characterized in that: Four electric rollers are installed on the top of the top cover frame (1), steel cables (14) are wound around the outer sides of the electric rollers, and the tops of the steel cables (14) are fixedly connected to the tops of the drive motors (6).

6. A soil carbon dioxide gas collection device according to claim 5, characterized in that: The top of the top cover frame (1) is fixedly connected to two symmetrically arranged restraining rods (16), the restraining rods (16) are slidably connected to the outer side of the driving motor (6), a series ring (22) is fixedly connected between the two restraining rods (16) and the tops of the two clamping arms (17), the outer side of the series ring (22) is rotatably connected to four guide wheels (13), and the steel cable (14) is partially sleeved on the outer side of the guide wheel (13).

7. A soil carbon dioxide gas collection device according to claim 6, characterized in that: A level gauge is installed on the inner side of the support frame (10), hydraulic arms (4) are installed on both ends of the support frame (10), and the level gauge is communicatively connected to the hydraulic arms (4).

8. A soil carbon dioxide gas collection device according to claim 7, characterized in that: The hydraulic arm (4) is composed of two metal rods with adjustable angles. The end of the hydraulic arm (4) is fixedly connected to a support block (9), and the support block (9) is arranged in a polyhedron shape.

9. A soil carbon dioxide gas collection device according to claim 8, characterized in that: Two rotatable cleaning discs (3) are arranged at the bottom of the through hole (11), and the two cleaning discs (3) are arranged symmetrically.

10. A soil carbon dioxide gas collection device according to claim 9, characterized in that: A plurality of scrapers are fixedly connected to the surface of the cleaning disc (3), and the plurality of scrapers are arranged in a ring-shaped manner at equal intervals. The cleaning disc (3) is mounted on the same side of the hydraulic arm (4).

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