Forest grass carbon sink metering and detecting device

Abstract

The invention relates to the technical field of measurement and detection, in particular to a forest grass carbon sink measurement and detection device. Comprising a base, a threaded rod, a detector, wheels, a guide rod, a sliding plate, a servo motor, a connecting frame and a collecting barrel, the threaded rod is fixedly connected to the front side of the top of the base through screws, the detector is installed on the threaded rod in a threaded mode, the detector is used for testing humidity, temperature and soil components at a sampling position, and the detector is slidably connected with the base; wheels are rotatably mounted on the left side and the right side of the base, four guide rods are welded to the top of the base, a connecting rope is connected between the top ends of the guide rods, a sliding plate is slidably mounted between the guide rods, a servo motor is fixedly connected to the center of the top of the sliding plate through bolts, and a connecting frame is rotatably arranged in the middle of the sliding plate. The connecting frame is connected with an output shaft of the servo motor, and the collecting barrel is rotationally installed on the lower portion of the connecting frame. According to the invention, the problems of slow single-point sampling and incomplete soil sample collection in the whole operation process can be solved.

Description

Technical Field

[0001] The present invention relates to the field of measurement and detection technology, and in particular to a forest and grassland carbon sink measurement and detection device. Background Art

[0002] Forest and grassland carbon sink refers to the process in which forest and grassland vegetation converts carbon dioxide in the atmosphere into organic carbon through photosynthesis. The carbon sequestration results can be used to offset carbon emissions or fulfill national carbon reduction commitments.

[0003] At present, existing monitoring devices generally have the problem of insufficient data collection frequency, which may lead to the loss of key carbon exchange information during the peak period of photosynthesis or the stage of dramatic changes in respiration. When the sampling interval exceeds 15 minutes, the estimated error of daily carbon sinks will exceed 20%, which seriously restricts the research on carbon cycle mechanisms and the accurate calculation of carbon trading markets.

[0004] In view of this, in order to address the above problems, it is necessary to propose a forest and grassland carbon sink measurement and detection device to solve the problems of slow single-point sampling and incomplete soil sample collection in the entire operation process. Summary of the Invention

[0005] In order to overcome the shortcomings of missing key carbon exchange information, long sampling intervals, and carbon sink estimation errors seriously exceeding the reasonable range allowed by the carbon cycle during the peak of photosynthesis or the stage of drastic changes in respiration, the technical problem is: to provide a forest and grassland carbon sink measurement and detection device to solve the problems of slow single-point sampling and incomplete soil sample collection in the entire operation process.

[0006] The technical solution is: a forest and grass carbon sink measurement and detection device, including a base, a threaded rod, a detector, a wheel, a guide rod, a sliding plate, a servo motor, a connecting frame, a collecting tube, a soil drill, a pushing mechanism and a guiding mechanism. A threaded rod is fixedly connected to the front side of the top of the base by a screw, and a detector is threadedly installed on the threaded rod. The detector is used to test the humidity, temperature and soil composition at the sampling point. The detector is slidably connected to the base, and wheels are rotatably installed on the left and right sides of the base. Four guide rods are welded on the top of the base, and a connecting rope is connected between the top ends of the guide rods. A sliding plate is slidably installed between the guide rods. The servo motor is fixedly connected to the center position of the top of the sliding plate by bolts. A connecting frame is rotatably provided in the middle of the sliding plate, and the connecting frame is connected to the output shaft of the servo motor. A collecting tube is rotatably installed at the lower part of the connecting frame, and a scale mark is provided on the collecting tube. The collecting tube is used to collect soil, and a soil drill is fixedly connected to the bottom of the collecting tube by screws. A pushing mechanism is provided on the top of the base, and the pushing mechanism is installed between the base and the sliding plate. A guide mechanism is installed in the middle of the sliding plate. The guide mechanism cooperates with the soil drill and the collecting tube for sampling.

[0007] Furthermore, the pushing mechanism includes a telescopic air cushion, an inflatable bag and a circular air bag. Four telescopic air cushions are connected between the top of the base and the top of the sliding plate. The telescopic air cushion wraps the guide rod. The inflatable bag is fixed with bolts on the rear side of the top of the base. A circular air bag is installed at the center position of the top of the base. The circular air bag is used to connect the telescopic air cushion and the inflatable bag, so that the telescopic air cushion and the inflatable bag are interconnected. There is a valve on the connecting pipe between the circular air bag and the inflatable bag.

[0008] Furthermore, the guide mechanism includes a swing rod, a pulley and a torsion spring. Two swing rods are rotatably installed on the front and rear sides of the sliding plate. There are four swing rods in total. Pullways are rotatably installed at the lower parts of the swing rods. Torsion springs are connected between the swing rods and the sliding plate.

[0009] Furthermore, it also includes a movable frame, a first spring, a pull rod and a fixed plate. The sliding plate has sliding grooves on both the front and rear sides, and the movable frame is slidably arranged in the sliding grooves. The first spring is connected between the movable frame and the sliding plate. The pull rod is fixed between the top of the movable frame by screws to control the up and down movement of the movable frames on the front and rear sides. The upper part of the swing rod is fixed with a fixed plate by screws, and each movable frame cooperates with the two fixed plates to lock in place.

[0010] Furthermore, it also includes partitions and sampling tubes. Partitions are installed on the front and back of the collecting tube. The partitions are used to completely seal the collecting tube and enhance the integrity of the sampling. The sampling tubes are neatly arranged and threaded on the partitions. The sampling tube is divided into two parts. The sampling tube is hollow toward the inside, and a groove that can be pinched and rotated is opened on the outside of the sampling tube to facilitate the staff to take out the collecting tube.

[0011] Furthermore, it also includes an N-shaped plug rod and a second elastic member. The left and right parts of the base are both slidably provided with N-shaped plug rods, and two second elastic members are connected between the N-shaped plug rod and the top of the base.

[0012] Furthermore, it also includes an L-shaped frame and a stopper. The left and right sides of the top of the base are both slidably provided with an L-shaped frame, and the inner ends of the L-shaped frame are welded with a stopper, which cooperates with the soil drill.

[0013] Furthermore, it also includes a soil-breaking rod, which is welded to the top of the collecting tube. When sampling is carried out in the collecting tube, the soil-breaking rod can loosen the collected soil.

[0014] The beneficial effect is that the present invention solves the problems of slow single-point sampling and incomplete soil sample collection in the entire operation process through the detector, servo motor and collection cylinder.

[0015] The present invention uses a telescopic air cushion and an inflatable bag, and utilizes the lifting force generated by the expansion of the air bag to smoothly pull out the collection tube assembly. The entire process does not require manual direct pulling, which effectively reduces labor intensity and improves operational safety.

[0016] The present invention uses the swing rod and the pulley to make the equipment more stable when the staff performs sampling and testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the first part of the present invention.

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the second part of the present invention.

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the pushing mechanism of the present invention.

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the guide mechanism of the present invention.

[0022] Figure 6 It is a partial three-dimensional structural schematic diagram of the guide mechanism of the present invention.

[0023] Figure 7 It is a schematic diagram of the three-dimensional structure of the movable frame, the first spring, the pull rod and the fixed plate of the present invention.

[0024] Figure 8 It is a schematic diagram of the three-dimensional structure of the partition and the sampling tube of the present invention.

[0025] Figure 9 It is a schematic diagram of the three-dimensional structure of the sampling tube of the present invention.

[0026] Figure 10 It is a schematic diagram of the three-dimensional structure of the n-type plug and the second elastic member of the present invention.

[0027] Figure 11 It is a schematic diagram of the three-dimensional structure of the L-shaped frame and the stop block of the present invention.

[0028] Figure 12 It is a schematic diagram of the three-dimensional structure of the base and wheels of the present invention.

[0029] The names and serial numbers of the parts in the figure are: 1. Base, 1001. Threaded rod, 1002. Detector, 2. Wheel, 3. Guide rod, 4. Sliding plate, 5. Servo motor, 6. Connecting frame, 7. Collecting tube, 9. Soil drill, 10. Pushing mechanism, 101. Telescopic air cushion, 102. Inflatable bag, 103. Circular air bag, 11. Guide mechanism, 111. Swing rod, 112. Pulley, 113. Torsion spring, 12. Moving frame, 121. First spring, 122. Pull rod, 123. Fixed plate, 13. Partition, 131. Sampling tube, 14. N-shaped plug rod, 141. Second elastic member, 15. L-shaped frame, 151. Stop block, 16. Soil-breaking rod. DETAILED DESCRIPTION

[0030] The technical solution of the present invention will be further described below with reference to the accompanying drawings.

[0031] Example 1: A forest and grass carbon sink measurement and detection device, such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 7 、 Figure 10 、 Figure 11 and Figure 12 As shown, it includes a base 1, a threaded rod 1001, a detector 1002, a wheel 2, a guide rod 3, a sliding plate 4, a servo motor 5, a connecting frame 6, a collecting tube 7, a soil drill 9, a pushing mechanism 10 and a guiding mechanism 11. The threaded rod 1001 is fixed to the front side of the top of the base 1 by screws. The detector 1002 is threadedly installed on the threaded rod 1001. The detector 1002 is used to test the humidity, temperature and soil composition at the sampling location. The detector 1002 is slidably connected to the base 1. Wheels 2 are rotatably installed on both sides of the base 1. Four guide rods 3 are welded on the top of the base 1. Connecting rods 3 are connected between the tops of the guide rods 3. A sliding plate 4 is slidably installed between the connecting rope and the guide rod 3. A servo motor 5 is fixedly connected to the center position of the top of the sliding plate 4 by bolts. A connecting frame 6 is rotatably provided in the middle of the sliding plate 4. The connecting frame 6 is connected to the output shaft of the servo motor 5. A collecting cylinder 7 is rotatably installed at the lower part of the connecting frame 6. The collecting cylinder 7 has scale marks. The collecting cylinder 7 is used to collect soil. A soil drill 9 is fixedly connected to the bottom of the collecting cylinder 7 by screws. A pushing mechanism 10 is provided on the top of the base 1. The pushing mechanism 10 is installed between the base 1 and the sliding plate 4. A guide mechanism 11 is installed in the middle of the sliding plate 4. The guide mechanism 11 cooperates with the soil drill 9 and the collecting cylinder 7 to take samples.

[0032] In the forest and grass carbon sink measurement and detection operation, the staff achieves efficient and accurate sampling through a mechanized operation process. First, they pull the connecting rope at the top of the guide rod 3, and then drive the wheel 2 on the base 1 to move to the preset sampling point. Then, they operate the rotating detector 1002 to perform a vertical penetration initial inspection of the soil, and reset the detector 1002 after obtaining basic parameters such as humidity and density. Then, they apply a downward pedaling force to the base 1 until it is completely level with the ground. In this process, the wheels 2 on both sides swing upward along the hinge with the base 1 under the drive of the squeezing force. As the wheels 2 are tilted, the center of gravity distribution of the equipment is optimized, and the overall structure forms a more stable mechanical support system, which significantly enhances the overall stability of the equipment. At the same time, the torsion spring equipped with the wheel 2 is compressed, providing an elastic potential energy reserve for the subsequent reset of the wheel 2. At this time, the pushing mechanism 10 is started to drive the sliding plate 4 to rise to the highest position along the guide rod 3, and the servo motor 5, connecting frame 6, collecting barrel 7 and soil drill 9 are synchronously lifted and moved upward synchronously. The guide mechanism 11 enters the standby state and enters the sampling stage. The servo motor 5 drives the connecting frame 6 to rotate, so that the collecting barrel 7 and the soil drill 9 form a synchronous rotation movement. The staff applies pressure on the sliding plate 4 by the handle to make the rotating soil drill 9 penetrate the soil vertically. During this period, the bottom of the guide mechanism 11 is in continuous contact with the surface to form a support, effectively suppressing the deflection of the collecting barrel 7 and its upper components. As the drilling depth increases, the soil sample is evenly filled into the collecting barrel 7 with a scale mark by centrifugal force. The operator can observe the sampling volume in real time. When the preset scale value is reached, the machine is stopped immediately. After the sampling is completed, the sliding plate 4 is reversed to lift the collecting barrel 7 and its upper components as a whole. When the collecting barrel 7 is completely separated from the soil, it is swung sideways by its articulated connection structure to achieve contactless transfer of samples and equipment. According to different carbon sink monitoring needs, the graded scale design of the collecting barrel 7 can simultaneously meet the differentiated sampling requirements of surface soil and deep soil. In this way, the problems of slow single-point sampling and incomplete soil sample collection in the entire operation process are solved.

[0033] like Figure 1 and Figure 4 As shown, the pushing mechanism 10 includes a telescopic air cushion 101, an inflatable bag 102 and a circular air bag 103. Four telescopic air cushions 101 are connected between the top of the base 1 and the top of the sliding plate 4. The telescopic air cushion 101 wraps the guide rod 3. The inflatable bag 102 is fixedly fastened with bolts on the rear side of the top of the base 1. A circular air bag 103 is installed at the center position of the top of the base 1. The circular air bag 103 is used to connect the telescopic air cushion 101 and the inflatable bag 102, so that the telescopic air cushion 101 and the inflatable bag 102 are interconnected. A valve is provided on the connecting pipe between the circular air bag 103 and the inflatable bag 102.

[0034] After completing the initial soil inspection and resetting the detector 1002, the staff steps on the inflatable bag 102 for reciprocating compression, so that the internal air is directed into the circular air bag 103 through the valve, and then the air in the circular air bag 103 enters the telescopic air cushion 101. The telescopic air cushion 101 is made of highly elastic polymer material and undergoes axial tensile deformation during the inflation process, generating a linear displacement output, thereby pushing the sliding plate 4 to move upward along the guide rod 3 to a preset height. When the sliding plate 4 needs to be pressed down for sampling, the valve switches to the pressure relief mode, and the internal air flows back to the inflatable bag 102 through the valve for deflation, forming a complete pneumatic cycle. After the sampling is completed, the staff repeatedly steps on the inflatable bag 102 and uses the lifting force generated by the expansion of the air bag to smoothly pull out the collection tube 7 assembly. The entire process does not require manual direct pulling, effectively reducing labor intensity and improving operational safety.

[0035] like Figure 1 、 Figure 5 and Figure 6 As shown, the guide mechanism 11 includes a swing rod 111, a pulley 112 and a torsion spring 113. Two swing rods 111 are rotatably installed on the front and rear sides of the sliding plate 4. There are four swing rods 111. The pulley 112 is rotatably installed at the lower part of the swing rod 111. A torsion spring 113 is connected between the swing rod 111 and the sliding plate 4.

[0036] When the soil drill 9 penetrates the sliding plate 4 and contacts the soil to be tested, the pulley 112 installed at the bottom of the sliding plate 4 touches the ground synchronously. During the continuous downward pressure of the sliding plate 4, the pulley 112 forms rolling friction with the ground, and its horizontal component drives the swing rod 111 to swing outward. At this time, the torsion spring 113 connected between the swing rod 111 and the sliding plate 4 undergoes elastic deformation. When the sliding plate 4 turns to the upward stroke, the torsion spring 113 releases elastic potential energy, driving the swing rod 111 and the pulley 112 carried by it to automatically reset to the initial center position. In this way, the equipment as a whole can be more stable when the staff are conducting sampling and testing.

[0037] Example 2: Based on Example 1, Figure 1 、 Figure 5 and Figure 7 As shown, it also includes a movable frame 12, a first spring 121, a pull rod 122 and a fixed plate 123. The sliding plate 4 is provided with a sliding groove on both the front and rear sides, and the movable frame 12 is slidingly arranged in the sliding groove. The first spring 121 is connected between the movable frame 12 and the sliding plate 4. The pull rod 122 is fixed between the top of the movable frame 12 by screws, which is used to control the up and down movement of the movable frames 12 on the front and rear sides. The upper part of the swing rod 111 is fixed with a fixed plate 123 by screws, and each movable frame 12 is engaged with the two fixed plates 123.

[0038] Before the pulley 112 touches the ground, a pre-unlocking operation needs to be performed. The staff manually pulls the pull rod 122 on the sliding plate 4 to drive the mobile frame 12 to move vertically upward. When the mobile frame 12 moves up to the limit position, its bottom wedge surface is completely separated from the fixed plate 123, forming a mechanical unlocking state, and the swing arm 111 obtains free swing space. After the sampling work is completed, when the swing arm 111 drives the fixed plate 123 to reset, the pull rod 122 is released, and the first spring 121 releases elastic potential energy to push the mobile frame 12 to reset quickly, so as to restrain the rotation of the swing arm 111 and effectively suppress the vibration displacement during transportation. The double-action unlocking-locking mechanism realizes stepless switching of the working state through the composite design of spring energy storage and mechanical limit. In this way, the instability problem of the swing arm 111 in the non-working state can be effectively eliminated.

[0039] like Figure 1 、 Figure 8 and Figure 9 As shown, it also includes a partition 13 and a sampling tube 131. Partitions 13 are installed on the front and back of the collecting tube 7. The partition 13 is used to completely seal the collecting tube 7 to enhance the integrity of the sampling. The sampling tubes 131 are neatly arranged and threaded on the partition 13. The sampling tube 131 is divided into two parts. The sampling tube 131 is hollow toward the inside, and a groove is opened on the outside of the sampling tube 131 for easy pinching and rotation, so that the staff can take out the sampling tube 131 conveniently.

[0040] When implementing stratified sampling of forest and grassland carbon sinks, a double-cylinder nested collection system is adopted. The outer layer is a high-strength carbon steel sampling cylinder 131, and the inner layer is equipped with a detachable porous collection cylinder 7. When the sampling drill bit penetrates the target soil layer, the forest and grassland carbon sample samples the surface activated carbon through the collection cylinder 7 under pressure. After the sampling is completed, the sampling cylinder 131 is vertically pulled to the extreme position, so that the collection cylinder 7 slides out smoothly along the guide rail under the action of gravity. This design allows targeted sampling of independent sections of the collection cylinder 7, which can reduce the cross-contamination rate of samples in each layer.

[0041] like Figure 1 and 10 The figure also includes an n-shaped plug rod 14 and a second elastic member 141. The left and right parts of the base 1 are both slidably provided with n-shaped plug rods 14 through guide grooves. Two second elastic members 141 are connected between the n-shaped plug rod 14 and the top of the base 1.

[0042] After the detection of detector 1002 is completed, the staff steps on the N-shaped rod 14 located at the base of detector 1002, and its two legs slide vertically down along the guide groove of the base 1. When the conical head at the end of the leg is inserted into the soil to the designed depth, the base 1 can be fixed. When the sample pre-installed in the guide groove is compressed to the maximum amount, the staff grabs the anti-slip handle of the gripping rod and lifts it vertically to completely separate the conical head of the leg from the soil. After releasing the pulling force, the positioning rod automatically rises along the guide groove under the action of the spring restoring force. When it rises to the limit position, a mechanical limit is formed to ensure that the rod is suspended at a safe height from the base surface to avoid accidental collision during transportation.

[0043] like Figure 1 and Figure 11 As shown, it also includes an L-shaped frame 15 and a stopper 151. L-shaped frames 15 are slidably provided on the left and right sides of the top of the base 1. Stoppers 151 are welded to the inner ends of the L-shaped frames 15, and the stoppers 151 cooperate with the soil drill 9.

[0044] When the soil drill 9 is lifted up, the staff pushes the L-shaped frame 15 inward, so that the block blocks 151 on both sides close together to constrain the soil drill 9 to accurately center and limit the position. In this way, the soil drill 9 and the equipment on it can be limited to enhance their stability. When sampling and testing are required, the L-shaped frame 15 is pushed in the opposite direction to make the block blocks 151 move outward evenly, and the soil drill 9 can be released.

[0045] like Figure 1 and Figure 3 The collecting tube 7 also includes a soil-breaking rod 16 welded to the top of the collecting tube 7. This rod loosens the collected soil during sampling. When the auger 9 drives the collecting tube 7 to rotate and press downward, the soil-breaking rod 16, fixed inside the collecting tube 7, rotates axially, achieving simultaneous soil fragmentation and sampling. This allows for the fragmentation of lumps of forest and grass carbon during collection, effectively preventing them from becoming stuck in the collecting tube 7.

[0046] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A forest and grass carbon sink measurement and detection device, characterized in that: Includes: Base (1), which is the body on which the device is installed; A threaded rod (1001), wherein the base (1) is provided with the threaded rod (1001); A detector (1002), wherein the threaded rod (1001) is provided with a detector (1002); A wheel (2) is rotatably provided on the base (1), and the wheel (2) and the base (1) are connected by a torsion spring; Guide rods (3), four guide rods (3) are evenly arranged around the top of the base (1); A sliding plate (4) is slidably provided between the guide rods (3); A servo motor (5) is provided on the top of the sliding plate (4); A connecting frame (6) is rotatably provided at the bottom of the sliding plate (4), and the connecting frame (6) is connected to the output shaft of the servo motor (5); A collecting cylinder (7) is rotatably provided on the connecting frame (6); A soil drill (9) is provided on the collecting cylinder (7); A pushing mechanism (10) is provided on the base (1) and is capable of pushing the sliding plate (4); A guide mechanism (11) is provided on the sliding plate (4) for cooperating with the soil drill (9) and the collecting tube (7) to perform sampling.

2. A forest and grass carbon sink measurement and detection device according to claim 1, characterized in that: The driving mechanism (10) includes: Telescopic air cushions (101), four telescopic air cushions (101) are evenly installed on the base (1), and the two ends of the telescopic air cushions (101) are respectively connected between the base (1) and the sliding plate (4); An inflatable bag (102), wherein the base (1) is provided with an inflatable bag (102); A circular air bag (103) is provided on the base (1) and is used to connect the telescopic air cushion (101) and the inflatable bag (102).

3. The forest and grass carbon sink measurement and detection device according to claim 2, characterized in that: The guide mechanism (11) comprises: Swing rods (111), a pair of swing rods (111) are provided on both the front and rear sides of the sliding plate (4); A pulley (112) is rotatably provided on the lower portion of the swing rod (111); Torsion spring (113), a torsion spring (113) is connected between the swing rod (111) and the sliding plate (4).

4. A forest and grass carbon sink measurement and detection device according to claim 3, characterized in that: It also includes: a moving frame (12), and the sliding plate (4) is slidably provided with a moving frame (12) on both the front and rear sides; A first spring (121), wherein the first spring (121) is connected between the movable frame (12) and the sliding plate (4); A pull rod (122) is provided between the outer ends of the movable frame (12); A fixed plate (123) is provided on the upper portion of the swing rod (111), and the fixed plate (123) and the movable frame (12) cooperate with each other.

5. The forest and grass carbon sink measurement and detection device according to claim 4, characterized in that: It also includes: a partition (13), with partitions (13) provided on both the front and rear sides of the collecting cylinder (7); Sampling tubes (131), a plurality of sampling tubes (131) are threadedly connected to the partition plate (13).

6. The forest and grassland carbon sink measurement and detection device according to claim 5, characterized in that: It also includes: an n-shaped plug rod (14), the base (1) is slidably provided with the n-shaped plug rod (14); A second elastic member (141) is connected between the N-shaped plug rod (14) and the top of the base (1).

7. The forest and grassland carbon sink measurement and detection device according to claim 6, characterized in that: It also includes: an L-shaped frame (15), and the L-shaped frame (15) is slidably provided on both the left and right sides of the base (1); Stopper (151): The inner end of the L-shaped frame (15) is provided with a stopper (151), and the stoppers (151) can be combined with each other.

8. The forest and grassland carbon sink measurement and detection device according to claim 7, characterized in that: Also included are: A soil-breaking rod (16) is provided on the inner side of the collecting tube (7), and the soil-breaking rod (16) is located at the center of the collecting tube (7).

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