A forest soil carbon content depth detection device

Abstract

The present invention discloses a forest soil carbon content depth detection device, which relates to the technical field of soil organic matter content detection, including a support frame and a rotary digging barrel; a rotary digging part, which is installed on the support frame, is used to drive the rotary digging barrel to rotate and move up and down, so as to insert the rotary digging barrel into the soil, perform a hole digging operation on the soil, and bring the rotary dug soil out of the rotary dug hole. The advantage is that when the present invention is sampling soil, by transmitting the pressing force between the sampling barrel and the soil to the inner wall of the hole dug, the probability of the rotary digging barrel tilting can be effectively avoided, the sampling depth is deeper, and the sample during sampling is ensured to be a horizontal sample, which effectively improves the sampling accuracy. At the same time, during the sampling process, not only the sampling barrel is pushed forward for sampling, but the sampling barrel can also rotate during the pushing process to form a rotary sampling, which can avoid the obstruction of some roots and has a higher sampling efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of soil organic matter content detection, and in particular to a forest soil carbon content depth detection device. Background Art

[0002] Carbon in the soil plays a vital role in ecosystems and agriculture. Soil organic carbon is an important source of energy for microorganisms and soil organisms, promotes the release and circulation of nutrients, and improves the overall fertility of the soil. In order to more accurately judge the radon fertility of the soil, it is necessary to conduct stratified testing of the carbon content in the soil.

[0003] At present, the detection method of carbon content in soil is to adopt fault sampling method for sampling and detection, and deep pits are dug out by excavating tools. Since the forest soil contains tree roots or stones, it is easy to be obstructed during the sampling process, and it is easy to mix and contaminate each other when the soil is taken out, and the soil taken out needs to be poured out for detection. There is a risk of mixing in the process of taking soil. Therefore, the announcement number CN221426008U discloses a forest soil carbon content depth detection device, which includes a balancing mechanism, the number of the balancing mechanisms is four, and they are respectively arranged at the four corners of the bottom of the base; a lifting motor, the number of the lifting motors is two, and they are respectively fixed on the upper surface of the base on the left and right, and the lifting motor is connected to the battery through a wire; a No. 1 screw is connected to the output shaft of the lifting motor, and a No. 1 internal threaded tube is provided on the No. 1 screw through a threaded screw sleeve, and a No. 1 connecting plate is fixed between the No. 1 internal threaded tubes.

[0004] Before sampling, the forest soil carbon content depth detection device needs to drill a hole, and then insert a rod and multiple collection tubes into the hole. The spacing between each collection tube is equal, so that sampling can be performed at different positions. When sampling, the collection tube is horizontally inserted into the soil in the hole and then pulled out. The soil in the collection tube is the sampled soil to be detected. Although it is a feasible solution in theory, it is affected by the depth of the hole. Once the depth of the hole exceeds a certain depth, the rod is moved by a single fulcrum. Only the top of the rod is stressed, and the bottom of the rod is in a suspended state. Therefore, when the collection tube contacts the soil, it is difficult to insert the collection tube into the soil simply by horizontal movement. The pressing force between the soil and the collection tube will cause the rod to tilt, resulting in an inability to perform effective sampling operations.

[0005] At the same time, within the scope of feasibility, simply squeezing the soil into the collection tube by horizontal extrusion is only suitable for soft soil. For soil with a large number of roots, effective sampling cannot be performed. Since the pressure between the collection tube and the root system is too large, the rod will be tilted or even bent.

[0006] Therefore, a new type of forest soil carbon content depth detection equipment can be used to solve the shortcomings of the existing technology. Summary of the invention

[0007] The purpose of the present invention is to solve the problems of drilling difficulty, easy deviation in rotation and shallow drilling depth in the prior art, and to propose a forest soil carbon content depth detection device.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A forest soil carbon content depth detection device comprises a support frame and a rotary drilling cylinder;

[0010] The rotary drilling part is installed on the support frame, and is used to drive the rotary drilling drum to rotate and move up and down, so as to insert the rotary drilling drum into the soil, perform a hole-digging operation on the soil, and bring the rotary-dug soil out of the rotary-dug hole. The rotary drilling part is composed of an inner cylinder, a lifting assembly and a rotating assembly. The lifting assembly is used to drive the rotary drilling drum to move up and down, and the rotating assembly is used to drive the rotary drilling drum to rotate. The inner cylinder is equipped with a soil-carrying assembly.

[0011] The sampling part is installed inside the inner cylinder and is used to sample soil at different depths inside the hole. The sampling part includes multiple sampling cylinders. A telescopic component is installed between the sampling cylinder and the inner cylinder. The inner cylinder is provided with multiple extension windows, the rotary drilling cylinder is provided with multiple extension holes matching the corresponding extension windows, and the rotary drilling cylinder is provided with multiple excavation holes. The inner cylinder is provided with multiple blocking components matching the corresponding extension windows.

[0012] Preferably, the lifting assembly includes a vertical rail fixedly mounted on a support frame, a sliding frame is slidably mounted on the vertical rail, a rotating sleeve is rotatably mounted on the sliding frame, the rotating sleeve is fixedly connected to the rotary drilling cylinder, a second motor is fixedly mounted on the rotating sleeve, a driving end of the second motor is fixedly connected to the inner cylinder via a connecting plate, a hydraulic rod is fixedly mounted on the support frame, and the telescopic end of the hydraulic rod is rotatably connected to the sliding frame.

[0013] Preferably, the rotating assembly includes a limit sleeve rotatably mounted on the top of the vertical rail, a rotating rod slidably mounted on the limit sleeve, a gear 1 slidably mounted on the rotating rod, the gear 1 and the limit sleeve are fixedly connected, a motor 1 is fixedly mounted on the top of the vertical rail, a gear 2 meshing with the gear 1 is fixedly mounted on the driving end of the motor 1, and the rotating rod and the motor 2 are fixedly connected via a connector.

[0014] Preferably, the soil-carrying assembly includes a spiral blade fixedly mounted on the side of the inner cylinder and a rotary drilling head fixedly mounted on the bottom of the inner cylinder.

[0015] Preferably, the telescopic assembly includes a screw rod rotatably installed in the inner cylinder, a nut rotatably installed on the screw rod, a push rod rotatably installed on the nut, a rotating disk rotatably installed on the push rod, the rotating disk is rotatably connected to the sampling cylinder, a limiting mechanism is installed between the sampling cylinder and the inner cylinder, a belt rotation mechanism is installed between the nut 1 and the sampling cylinder, and a driving mechanism matching the screw rod 1 is installed in the inner cylinder.

[0016] Preferably, the limiting mechanism comprises two supporting columns fixedly mounted inside the inner cylinder, a fixing hoop is slidably mounted on the two supporting columns, and the fixing hoop is rotationally connected to the sampling cylinder.

[0017] Preferably, the belt rotating mechanism includes a bow rod fixedly mounted on nut one, a friction rod fixedly mounted on the bow rod, a friction column rotatably mounted on the inner cylinder and cooperating with the friction rod, a roller fixedly mounted on the friction column, and a spiral groove body cooperating with the roller is opened on the sampling cylinder.

[0018] Preferably, the driving mechanism comprises a motor three fixedly mounted on the top of the inner cylinder, and a driving end of the motor three is connected to the screw rod one via a linkage belt.

[0019] Preferably, the blocking assembly includes a screw rod 2 fixedly rotatably mounted inside the inner cylinder, a nut 2 is threadedly rotatably mounted on the screw rod 2, a fixed arm is fixedly mounted on the nut 2, an elastic telescopic rod is fixedly mounted on the fixed arm, a baffle matching the extended window is fixedly mounted on the telescopic end of the elastic telescopic rod, the baffle is slidably connected to the inner cylinder, and a driving mechanism is installed between the motor 3 and the screw rod 2.

[0020] Preferably, the driving mechanism comprises a friction plate with a fan-shaped end face fixedly mounted on the third driving end of the motor, and a friction roller matched with the friction plate is fixedly mounted on the second screw rod.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] 1. When the forest soil carbon content depth detection equipment is used for soil carbon content detection sampling, the rotary drilling cylinder and the inner cylinder are set to drill holes in the soil to take soil, and then the sampling cylinder is used to perform layered sampling of the soil inside the borehole, thereby achieving the two-in-one effect of drilling and sampling, making the sampling and detection operation more convenient and the sampling and detection efficiency higher.

[0023] 2. When the forest soil carbon content depth detection equipment is sampling for soil carbon content detection, the sampling tube and the inner tube are arranged inside the rotary drilling tube, and the rotary drilling tube is used to provide support for the rotation of the sampling tube. The reaction force of the rotation of the sampling tube is directly applied to the inner wall of the rotary drilling hole. This can effectively avoid the situation where the rotary drilling tube is tilted and sampling cannot be performed, ensuring the normal sampling. It is suitable for sampling detection at a variety of different depths and deeper depths.

[0024] 3. When the forest soil carbon content depth detection equipment is conducting soil carbon content detection sampling, the screw rod 1, the nut 1 and the push rod are set to drive the sampling tube to advance the sampling. At the same time, with the threaded groove body and the roller, the sampling tube can be driven to rotate during the advancement of the sampling tube, forming a screw-in advancement method. The sampling tube port adopts a rubbing tooth design, which can cut off the roots encountered during advancement, and has a higher sampling efficiency.

[0025] To sum up, when the present invention is taking soil samples, the probability of the rotary drilling tube tilting can be effectively avoided by transmitting the pressing force between the sampling tube and the soil to the inner wall of the hole, and the sampling depth is deeper, ensuring that the sample is a horizontal sample during sampling, and effectively improving the sampling accuracy. At the same time, during the sampling process, not only the sampling tube is pushed forward for sampling, but the sampling tube can also rotate during the pushing process to form a rotary sampling, which can avoid the obstruction of some roots and has a higher sampling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings, wherein:

[0027] Figure 1 This is a schematic diagram of the structure of a forest soil carbon content depth detection device proposed by the present invention;

[0028] Figure 2 for Figure 1 Detailed schematic diagram of the structure after being rotated to a certain angle;

[0029] Figure 3 for Figure 1 A detailed structural diagram after removing the support frame, sliding frame, vertical rail and hydraulic rod and rotating them to a certain angle;

[0030] Figure 4 for Figure 3 The enlarged structural schematic detail diagram of the A part;

[0031] Figure 5 for Figure 3 A detailed diagram showing the enlarged structure of the middle rotary drilling barrel after it rotates to a certain angle;

[0032] Figure 6 for Figure 5 Detailed schematic diagram of the structure after being rotated to a certain angle;

[0033] Figure 7 for Figure 6 A schematic detailed view of the plan structure along one of the angles;

[0034] Figure 8 for Figure 7 Detailed schematic diagram of the three-dimensional structure along the BB section;

[0035] Fig. 9 for Figure 8 Detailed diagram of the structure after removing the rotary drilling tube and the connecting plate;

[0036] Fig.10 for Fig. 9 A schematic detailed view of a structure along a plane with an angle therein;

[0037] Fig.11 for Fig.10 Detailed schematic diagram of the three-dimensional structure along the CC section;

[0038] Fig.12 for Fig.11 A schematic detailed view of the plan structure along one of the angles;

[0039] Fig.13 for Fig.11 A detailed diagram of the structure after removing the rotary drilling head, spiral blades and inner cylinder;

[0040] Fig.14 for Fig.13 A detailed diagram of the enlarged structure of one of the baffles, the sampling tube and the motor three;

[0041] Fig.15 for Fig.14 A detailed diagram of the structure after the baffle and the second screw are removed and rotated to a certain angle;

[0042] Fig.16 for Fig.14 Detailed schematic diagram of the structure of the middle motor 3, baffle and screw 2;

[0043] Fig.17 for Fig.16 Detailed schematic diagram of the enlarged structure of part D in the middle.

[0044] In the figure: 1 support frame, 2 vertical rail, 3 rotary drilling tube, 4 sliding frame, 5 gear 1, 6 gear 2, 7 rotating rod, 8 hydraulic rod, 9 motor 1, 10 limit sleeve, 11 rotating sleeve, 12 motor 2, 13 connecting plate, 14 connector, 15 excavation hole, 16 extension hole, 17 rotary drilling head, 18 spiral blade, 19 inner tube, 20 baffle, 21 sampling tube, 22 motor 3, 23 support column, 24 screw rod 1, 25 screw rod 2, 26 fixing hoop, 27 nut 1, 28 push rod, 29 rotating disk, 30 linked belt, 31 roller, 32 friction rod, 33 bow rod, 34 friction plate, 35 friction roller, 36 nut 2, 37 fixed arm, 38 elastic telescopic rod, 39 connecting block. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] Example 1: Reference Figure 1-Figure 9 , a forest soil carbon content depth detection device, including a support frame 1, and also includes a rotary digging barrel 3; a rotary digging part, installed on the support frame 1, is used to drive the rotary digging barrel 3 to rotate and move up and down, so as to insert the rotary digging barrel 3 into the soil, dig a hole in the soil, and bring the rotary dug soil out of the rotary dug hole, the rotary digging part is composed of an inner barrel 19, a lifting component and a rotating component, and the lifting component is used to drive the rotary digging barrel 3 to move up and down;

[0047] The lifting assembly includes a vertical rail 2 fixedly mounted on a support frame 1, a sliding frame 4 is slidably mounted on the vertical rail 2, a rotating sleeve 11 is rotatably mounted on the sliding frame 4, the rotating sleeve 11 is fixedly connected to the rotary drilling cylinder 3, a motor 2 12 is fixedly mounted on the rotating sleeve 11, a driving end of the motor 2 12 is fixedly connected to the inner cylinder 19 via a connecting plate 13, a hydraulic rod 8 is fixedly mounted on the support frame 1, and a telescopic end of the hydraulic rod 8 is rotatably connected to the sliding frame 4.

[0048] The hydraulic rod 8 is used to drive the sliding frame 4 to slide up and down on the vertical rail 2. The sliding frame 4 will drive the rotary drilling tube 3 to move up and down through the rotating sleeve 11. The end of the rotary drilling tube 3 adopts a rubbing tooth design. In this way, during the drilling process of the rotary drilling tube 3, not only can the soil be pressed and sampled, but the soil can also be rotated and cut and sampled. Sampling is easier, and the root weeds in the soil can be cut off, which is more conducive to the drilling of the rotary drilling tube 3.

[0049] The rotating assembly is used to drive the rotary drilling barrel 3 to rotate. The rotating assembly includes a limit sleeve 10 rotatably installed on the top of the vertical rail 2. The limit sleeve 10 and the vertical rail 2 are rotatably connected through a bearing. It not only has a certain strength, but also has low friction. The limit sleeve 10 rotates more smoothly, reducing the load of the motor 9. A rotating rod 7 is slidably installed on the limit sleeve 10, and a gear 5 is slidably installed on the rotating rod 7. The gear 5 and the limit sleeve 10 are fixedly connected. A motor 9 is fixedly installed on the top of the vertical rail 2, and a gear 2 6 meshing with the gear 5 is fixedly installed on the driving end of the motor 9. The rotating rod 7 and the motor 2 12 are fixedly connected through a connector 14.

[0050] A groove is provided on the gear 1 5, and a limit strip matching the groove is fixedly installed on the rotating rod 7. The length of the limit strip is equal to the length of the rotating rod 7. Due to the limitation of the limit strip and the groove, when the gear 1 5 rotates, the rotating rod 7 can be driven to rotate without affecting the rotating rod 7 sliding up and down on the gear 1 5.

[0051] As the rotary drilling tube 3 moves downward, the motor 19 drives the gear 2 6 to rotate, thereby driving the gear 15 to rotate. The rotation of the gear 15 drives the rotating rod 7 to rotate. The rotation of the rotating rod 7 drives the connector 14 to rotate, thereby driving the motor 2 12 to rotate. The motor 2 12 drives the rotating sleeve 11 to rotate, thereby driving the rotary drilling tube 3 to rotate (the rotation direction of the motor 2 12 is opposite to the rotation direction of the motor 19), thereby realizing the rotation of the rotary drilling tube 3, cooperating with the drilling of the rotary drilling tube 3, forming rotary drilling.

[0052] A soil-carrying assembly is installed on the inner cylinder 19, and the soil-carrying assembly includes a spiral blade 18 fixedly installed on the side of the inner cylinder 19 and a rotary digging head 17 fixedly installed at the bottom of the inner cylinder 19. The rotary digging head 17 is composed of a plurality of cutting heads, and an inclined groove is provided on the rotary digging head 17. When the rotary digging cylinder 3 is rotated in, the soil will enter the rotary digging cylinder 3, and then the inner cylinder 19 is driven by the motor 2 12 to rotate in the opposite direction to the direction of the rotary digging cylinder 3. At this time, the spiral blade 18 on the inner cylinder 19 will drive the soil in the rotary digging cylinder 3 upward from the gap between the rotary digging cylinder 3 and the inner cylinder 19, and discharge it from the unearthing hole 15. At this time, the rotation of the rotary digging head 17 will drill and crush the soil, and then carry it from the groove to the gap between the inner cylinder 19 and the rotary digging cylinder 3, so as to realize the rotary digging and soil-carrying operation.

[0053] The design direction of the spiral blade 18 is the rotation direction of the rotary drilling barrel 3, which is opposite to the rotation direction of the rotary drilling head 17. In this way, the soil excavated by the rotary drilling head 17 can form an offset with the spiral blade 18, increasing the mortgage force between the soil and the spiral blade 18, so that the soil can enter the spiral blade 18 faster, thereby improving the soil transportation efficiency of the spiral blade 18.

[0054] Embodiment 2: This embodiment is different from the embodiment 1 in that: Figure 9-Figure 17The sampling part is installed inside the inner cylinder 19 and is used to sample soil at different depths inside the hole. The sampling part includes a plurality of sampling cylinders 21, and a telescopic assembly is installed between the sampling cylinders 21 and the inner cylinder 19;

[0055] The telescopic assembly includes a screw rod 24 rotatably mounted in the inner cylinder 19, a nut 27 is rotatably mounted on the screw rod 24, a push rod 28 is rotatably mounted on the nut 27, a rotating disk 29 is rotatably mounted on the push rod 28, the rotating disk 29 is rotatably connected to the sampling cylinder 21, and a limiting mechanism is installed between the sampling cylinder 21 and the inner cylinder 19;

[0056] Two supporting bodies are fixedly installed on the rotating disk 29, and the two supporting bodies are rotatably connected to the push rod 28 through a rotating shaft. A spring roll is fixedly installed between the rotating shaft and the two supporting bodies. The purpose of this design is to ensure that the push rod 28 and the rotating disk 29 are always in an elastically tightened state. As long as the end of the push rod 28 away from the support frame is loosened, the push rod 28 will immediately rotate under the action of the spring roll, ensuring that the sampling tube 21 is smoothly ejected to prevent it from getting stuck.

[0057] When the borehole reaches a certain depth, the drilling of the rotary drilling barrel 3 is stopped, and the nut 27 is driven to move by the rotation of the screw rod 24, thereby driving the push rod 28 to move. Since there is a certain angle between the push rod 28 and the sampling barrel 21 (the angle is greater than 100 degrees), the sampling barrel 21 will move under the push of the push rod 28, thereby realizing the pushing operation of the sampling barrel 21.

[0058] The limiting mechanism includes two support columns 23 fixedly mounted inside the inner tube 19 , and a fixing hoop 26 is slidably mounted on the two support columns 23 . The fixing hoop 26 is rotatably connected to the sampling tube 21 .

[0059] The support column 23 and the fixing hoop 26 are connected by a ball sliding connection, which can effectively reduce the friction between the support column 23 and the fixing hoop 26, so that the fixing hoop 26 can slide more smoothly on the support column 23 to avoid getting stuck. At the same time, the support column 23 and the fixing hoop 26 are also used to limit the sampling tube 21 to ensure that the sampling tube 21 will not tilt when moving in the horizontal direction.

[0060] A rotating mechanism is installed between the nut 27 and the sampling tube 21, and the rotating mechanism includes a bow rod 33 fixedly installed on the nut 27, a friction rod 32 fixedly installed on the bow rod 33, a friction column matched with the friction rod 32 is rotatably installed on the inner tube 19, a roller 31 is fixedly installed on the friction column, and a spiral groove body matched with the roller 31 is opened on the sampling tube 21. The friction rod 32 and the friction column are both made of rubber material. When the friction rod 32 moves, the friction column will be driven to rotate under the action of huge friction force.

[0061] The movement of nut 27 will drive the movement of the bow rod 33 fixed thereto, thereby driving the movement of the friction rod 32. The friction force generated between the friction rod 32 and the friction column will drive the friction column to rotate, thereby driving the roller 31 to rotate. The rotation of the roller 31 will drive the sampling barrel 21 to rotate through the friction force between the spiral grooves. The purpose of using the bow rod 33 is to prevent the movement of the bow rod 33 from affecting the sampling barrel 21, so as to avoid the moving trajectory of the sampling barrel 21.

[0062] A driving mechanism matched with the screw rod 1 24 is installed in the inner cylinder 19, and the driving mechanism includes a motor 3 22 fixedly installed at the top of the inner cylinder 19, and the driving end of the motor 3 22 is connected to the screw rod 1 24 through a linkage belt 30; the rotation of the driving end of the motor 3 22 will drive the screw rod 1 24 to rotate through the linkage belt 30, which can effectively reduce the influence of the vibration generated by the operation of the motor 3 22 on the operation of the screw rod 1 24, so that the cooperation between the screw rod 1 24 and the nut 1 27 is more precise.

[0063] The inner cylinder 19 is provided with a plurality of extension windows, the rotary drilling cylinder 3 is provided with a plurality of extension holes 16 which match the corresponding extension windows, and the rotary drilling cylinder 3 is provided with a plurality of excavation holes 15. The inner cylinder 19 is provided with a plurality of sealing components which match the corresponding extension windows. The extension windows are used for extending the sampling cylinder 21. The sampling cylinder 21 will extend to the outside of the rotary drilling cylinder 3 through the extension windows and the extension holes 16, and be inserted into the soil on the inner wall of the hole for sampling.

[0064] The blocking assembly includes a screw rod 25 fixedly rotatably mounted inside the inner cylinder 19, a nut 36 is threadedly rotatably mounted on the screw rod 25, a fixed arm 37 is fixedly mounted on the nut 36, an elastic telescopic rod 38 is fixedly mounted on the fixed arm 37, a baffle 20 matching the extended window is fixedly mounted on the telescopic end of the elastic telescopic rod 38, the baffle 20 is slidably connected to the inner cylinder 19, and a driving mechanism is installed between the motor 3 22 and the screw rod 25.

[0065] Since the extension window is in an open state when drilling, the soil driven by the spiral blade 18 will enter the extension window, so the baffle 20 is used to block the extension window, and the extension window is kept in a closed state when drilling. When sampling, the motor 3 22 will drive the screw rod 25 to rotate through the driving mechanism, thereby driving the nut 2 36 to move, and the nut 2 36 will drive the fixed arm 37 and the elastic telescopic rod 38 to move, thereby driving the baffle 20 to move downward (the bottom of the extension window is inclined at a certain angle). The design is such that when the baffle 20 moves downward, according to the decomposition of the force, the baffle 20 can be automatically driven to retract, so that the elastic telescopic rod 38 is compressed). When the baffle 20 is retracted, the extension window is opened. At this time, the driving end of the motor 3 22 continues to rotate to drive the sampling tube 21 to extend out of the rotary digging tube 3 (there is a certain distance between the sampling tube 21 and the inner tube 19. Before the sampling tube 21 reaches the inner wall position of the inner tube 19, the baffle 20 is in a fully open state. When the sampling tube 21 is retracted, the baffle 20 is closed after the sampling tube 21 is completely retracted).

[0066] The driving mechanism includes a friction plate 34 with a fan-shaped end face fixedly mounted on the driving end of the motor three 22, and a friction roller 35 matched with the friction plate 34 is fixedly mounted on the screw rod two 25. The purpose of the fan-shaped design is to make the baffle 20 fully open before the sampling tube 21 extends out of the inner tube 19, and the baffle 20 moves to close the extension window only when the sampling tube 21 is fully retracted into the inner tube 19.

[0067] like Fig.16 As shown, the rotation of the driving end of the motor three 22 will drive the fan-shaped friction plate 34 to rotate (the number of rotations of the driving end of the motor three 22 is less than one circle, which can ensure that the friction plate 34 and the friction roller 35 only contact once, and the baffle 20 can be fully opened with one contact), the friction plate 34 will drive the friction roller 35 to rotate, thereby driving the screw rod 25 to rotate, and the rotation of the screw rod 25 will open the baffle 20 through the above-mentioned blocking component. The friction plate 34 and the friction roller 35 are both made of metal material for close friction. Since the operation between the screw rod 25 and the nut 2 36 requires a large torque, if the friction plate 34 and the friction roller 35 are made of rubber material, it is very easy to cause the friction plate 34 and the friction roller 35 to deform and fail to drive the screw rod 25 to rotate. The use of metal material friction has higher stability.

[0068] The specific operation steps of this device are as follows:

[0069] First, the support frame 1 is placed on the soil surface to be sampled and tested as needed, and then the support frame 1 is leveled to ensure that the rotary digging barrel 3 remains vertical, and then the rotary digging barrel 3 is driven downward by the lifting assembly so that the bottom of the rotary digging barrel 3 contacts the ground, and then the rotary digging barrel 3 is driven to rotate by the rotating assembly, and the rotary digging barrel 3 continues to move downward during the rotation, so that the rotary digging barrel 3 drills into the soil;

[0070] As the rotary drilling tube 3 is drilled, the soil carrying assembly is started, and the soil excavated inside the rotary drilling tube 3 can be brought out from the excavation hole 15 to form a hole. At this time, the rotary drilling tube 3 is still located inside the hole.

[0071] Then, the telescopic assembly is opened, and the sampling tube 21 is driven to extend out of the inner tube 19 from the extension window through the telescopic assembly, and then the rotary drilling tube 3 is extended from the extension hole 16. During the extension process of the sampling tube 21, the sampling tube 21 is driven to rotate through the driving mechanism to realize the drilling of the sampling tube 21;

[0072] As the sampling tube 21 moves, the baffle 20 will open under the action of the blocking assembly, and the sampling tube 21 can then extend from the extension window. When the sampling is completed, the sampling tube 21 is retracted into the inner tube 19, and then the extension window is blocked by the blocking assembly.

[0073] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A forest soil carbon content depth detection device, comprising a support frame (1), characterized in that: It also includes a rotary drilling drum (3); The rotary drilling part is mounted on the support frame (1) and is used to drive the rotary drilling cylinder (3) to rotate and move up and down, so that the rotary drilling cylinder (3) is inserted into the soil to perform a hole-digging operation on the soil, and the rotary-dug soil is brought out of the rotary-dug hole. The rotary drilling part is composed of an inner cylinder (19), a lifting component and a rotating component. The lifting component is used to drive the rotary drilling cylinder (3) to move up and down, and the rotating component is used to drive the rotary drilling cylinder (3) to rotate. The inner cylinder (19) is equipped with a soil-carrying component. A sampling part, installed inside the inner cylinder (19), and used for sampling soil at positions at different depths inside the hole, the sampling part comprising a plurality of sampling cylinders (21), and a telescopic assembly is installed between the sampling cylinders (21) and the inner cylinder (19); The telescopic assembly comprises a screw rod (24) rotatably mounted in an inner tube (19); a nut (27) is rotatably mounted on the screw rod (24); a push rod (28) is rotatably mounted on the nut (27); a rotating disk (29) is rotatably mounted on the push rod (28); the rotating disk (29) is rotatably connected to the sampling tube (21); a limiting mechanism is mounted between the sampling tube (21) and the inner tube (19); a belt rotation mechanism is mounted between the nut (27) and the sampling tube (21); and a driving mechanism matched with the screw rod (24) is mounted in the inner tube (19); The limiting mechanism comprises two support columns (23) fixedly mounted inside the inner cylinder (19), a fixing hoop (26) being slidably mounted on the two support columns (23), and the fixing hoop (26) is rotatably connected to the sampling cylinder (21); The belt rotation mechanism comprises a bow-shaped rod (33) fixedly mounted on a nut (27), a friction rod (32) fixedly mounted on the bow-shaped rod (33), a friction column rotatably mounted on the inner cylinder (19) and cooperating with the friction rod (32), a roller (31) fixedly mounted on the friction column, and a spiral groove body cooperating with the roller (31) is formed on the sampling cylinder (21); The driving mechanism comprises a motor three (22) fixedly mounted on the top of the inner cylinder (19), wherein the driving end of the motor three (22) is connected to the screw rod one (24) via a linkage belt (30); The inner cylinder (19) is provided with a plurality of extension windows, the rotary excavation cylinder (3) is provided with a plurality of extension holes (16) that match the corresponding extension windows, and the rotary excavation cylinder (3) is provided with a plurality of excavation holes (15), and the inner cylinder (19) is provided with a plurality of plugging components that match the corresponding extension windows; The blocking assembly comprises a screw rod 2 (25) fixedly rotatably mounted inside the inner cylinder (19), a nut 2 (36) being threadedly rotatably mounted on the screw rod 2 (25), a fixed arm (37) being fixedly mounted on the nut 2 (36), an elastic telescopic rod (38) being fixedly mounted on the fixed arm (37), a baffle (20) matching the extended window being fixedly mounted on the telescopic end of the elastic telescopic rod (38), the baffle (20) being slidably connected to the inner cylinder (19), and a driving mechanism being mounted between the motor 3 (22) and the screw rod 2 (25); The driving mechanism comprises a friction plate (34) with a fan-shaped end face fixedly mounted on the driving end of the third motor (22), and a friction roller (35) matching the friction plate (34) is fixedly mounted on the second screw rod (25).

2. The forest soil carbon content depth detection device according to claim 1 is characterized in that: The lifting assembly comprises a vertical rail (2) fixedly mounted on a support frame (1), a sliding frame (4) slidably mounted on the vertical rail (2), a rotating sleeve (11) rotatably mounted on the sliding frame (4), the rotating sleeve (11) being fixedly connected to the rotary drilling cylinder (3), a second motor (12) being fixedly mounted on the rotating sleeve (11), a driving end of the second motor (12) being fixedly connected to an inner cylinder (19) via a connecting plate (13), a hydraulic rod (8) being fixedly mounted on the support frame (1), and a telescopic end of the hydraulic rod (8) being rotatably connected to the sliding frame (4).

3. The forest soil carbon content depth detection device according to claim 2 is characterized in that: The rotating assembly comprises a limit sleeve (10) rotatably mounted on the top of the vertical rail (2); a rotating rod (7) is slidably mounted on the limit sleeve (10); a gear 1 (5) is slidably mounted on the rotating rod (7); the gear 1 (5) and the limit sleeve (10) are fixedly connected; a motor 1 (9) is fixedly mounted on the top of the vertical rail (2); a gear 2 (6) meshing with the gear 1 (5) is fixedly mounted on the driving end of the motor 1 (9); and the rotating rod (7) and the motor 2 (12) are fixedly connected via a connector (14).

4. The forest soil carbon content depth detection device according to claim 1 is characterized in that: The soil-carrying assembly comprises a spiral blade (18) fixedly mounted on the side of the inner cylinder (19) and a rotary drilling head (17) fixedly mounted on the bottom of the inner cylinder (19).

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