Soil collecting and sampling equipment and soil sampling method for bamboo shoot production monitoring

Abstract

The invention relates to the technical field of soil collecting and sampling equipment, and discloses soil collecting and sampling equipment and a soil sampling method for bamboo shoot production monitoring, the soil collecting and sampling equipment comprises a mounting rack, a driving motor, a sampling barrel and a transmission mechanism, the driving motor is fixedly mounted on the mounting rack, and the sampling barrel is arranged on the mounting rack; the sampling barrel and a driving shaft of the driving motor are coaxially arranged; the transmission mechanism comprises a hollow screw rod, a spline rod and a nut; according to the soil collecting and sampling equipment, the driving motor, the hollow screw rod, the spline rod and the nut are arranged, so that the sampling barrel is driven by the driving motor to rotate and linearly slide at the same time, the sampling barrel can automatically drill into soil without manual pressing, and the problem of body inclination caused by continuous change of a force application posture of an operator is effectively avoided; the sampling barrel is always kept in a vertical state, the sampling perpendicularity and the sample integrity are guaranteed, the requirement of bamboo shoot production monitoring on the soil sampling accuracy is met, and meanwhile the operation difficulty is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of soil sampling equipment, in particular to a soil sampling equipment and a soil sampling method for bamboo shoot production monitoring. BACKGROUND

[0002] In bamboo shoot production monitoring, soil sampling is a key basic work. The core purpose is to collect soil samples of different depths and different regions, analyze the physical and chemical properties of the soil, such as fertility, pH, organic matter content, water content, and soil structure. These data can provide scientific basis for bamboo shoot growth environment evaluation, help growers accurately grasp the soil conditions for bamboo shoot growth, and then adjust fertilization, irrigation and other management measures to ensure high quality and high yield of bamboo shoots, and also provide data support for soil improvement and sustainable production in bamboo shoot planting areas.

[0003] Chinese patent CN118392564B discloses a frozen soil sampler, which is suitable for soil sampling operation in frozen soil environment by setting a separation structure and a heating device to heat the drill cylinder to achieve ice breaking function.

[0004] The above-mentioned sampler requires the operator to continuously change the force exertion posture during the sampling process as the sampling member enters the soil depth, which easily leads to the sampling member unable to descend vertically due to body inclination, thereby affecting the verticality of sampling and the integrity of the sample. This deviation will directly lead to distorted monitoring data. Meanwhile, when the length of the sampling member is large, the height of the supporting handle is too high at the initial stage, which makes it difficult for the operator to hold stably, thereby increasing the operation difficulty and affecting the accuracy of the sampling position due to equipment shaking, which cannot meet the demand for accurate sampling at specific sampling points in bamboo shoot production monitoring. SUMMARY

[0005] (I) Technical problems solved

[0006] In view of the deficiencies of the prior art, the present application provides a soil sampling equipment and a soil sampling method for bamboo shoot production monitoring, which has the function of being easier to maintain stability during soil drilling and sampling, and solves the problems mentioned in the above background.

[0007] (II) Technical solutions

[0008] To solve the above technical problems, the present application provides the following technical solutions:

[0009] A soil sampling equipment, comprising a mounting frame, a driving motor, a sampling cylinder and a transmission mechanism, the driving motor is fixedly installed on the mounting frame, and the sampling cylinder is coaxially arranged with the driving shaft of the driving motor;

[0010] The transmission mechanism comprises a hollow screw rod, a spline rod and a nut, the hollow screw rod is in transmission connection with a driving shaft of a driving motor, the spline rod is in sliding connection with an inner hole of the hollow screw rod, and the spline rod is in rotational connection with the nut, the nut is in threaded connection with an outer side wall of the hollow screw rod, and the nut is slidingly installed on one side of the mounting rack;

[0011] The sampling cylinder is installed at an end of the spline rod away from the mounting rack.

[0012] When the driving shaft of the driving motor rotates, the hollow screw rod drives the spline rod to rotate, and the hollow screw rod can drive the nut to slide, when the nut slides, the spline rod moves on the hollow screw rod, and the sampling cylinder simultaneously slides linearly and rotates, so that the sampling cylinder can drill into the soil by itself without the need of manpower to press the sampling cylinder to move downward.

[0013] Preferably, the mounting rack is fixedly installed with a mounting bin, the driving shaft of the driving motor extends into the interior of the mounting bin, and one end of the hollow screw rod extends into the interior of the mounting bin and is in rotational connection with the mounting bin.

[0014] Preferably, the transmission mechanism further comprises a driving disc, a driving friction disc, a driven friction disc and a supporting spring, the driving disc, the driving friction disc and the driven friction disc are all arranged in the interior of the mounting bin, the driving disc is fixedly connected with the driving shaft of the driving motor, the driving friction disc is slidingly installed on one side of the driving disc, the driven friction disc is fixedly installed on one end of the hollow screw rod, the opposite sides of the driving friction disc and the driven friction disc are both provided with friction surfaces, and the driving friction disc and the driven friction disc are in static friction transmission, and the two ends of the supporting spring are fixedly connected with the driving disc and the driving friction disc respectively.

[0015] Preferably, the bottom of the mounting bin is fixedly installed with a protection tube, the protection tube is in sliding connection with the nut, the lower end of the spline rod is rotatably installed with a rotating ring, a protection sleeve is fixedly installed between the nut and the rotating ring, and the protection sleeve is arranged on the inner side of the protection tube.

[0016] Preferably, the top of the sampling cylinder is provided with a perforation, and the inner top of the sampling cylinder is fixedly installed with an internal thread ring, the inner side of the internal thread ring is in threaded connection with a threaded block, the upper end of the threaded block is fixedly installed with a plug, the plug is fixedly connected with the lower end of the spline rod, and the plug is inserted into the perforation, the rotation direction of the external thread of the hollow screw rod is the same as that of the external thread of the threaded block, when the spline rod moves downward to push the sampling cylinder to extend into the soil, the threaded block is locked with the top of the internal thread ring, so as to ensure that the sampling cylinder rotates with the spline rod and extends downward.

[0017] Preferably, the lower end of the threaded block is fixedly installed with a push block, and the push block is movably arranged in the interior of the sampling cylinder.

[0018] Preferably, the protective tube is arranged in the inner side of the through hole, and an external thread ring is fixedly arranged on the upper end of the outer surface of the protective tube and is threadedly matched with the inner side of the through hole.

[0019] Preferably, air holes are arranged on the top, the internal thread ring and the push block of the sampling cylinder, and the lower end of the sampling cylinder is provided with a sawtooth surface.

[0020] Preferably, a rotary encoder is fixedly arranged in the installation bin, the rotary encoder is sleeved on the hollow screw rod, the number of rotations of the hollow screw rod is recorded through the rotary encoder, so that the depth of the sampling cylinder inserted into the soil is determined, a control panel is fixedly arranged on the driving motor, and the control panel is electrically connected with the driving motor and the rotary encoder.

[0021] The application further discloses a soil sampling method for bamboo shoot production monitoring.

[0022] The sampling detection points of the bamboo shoot production area are determined, a plurality of representative detection points are uniformly selected according to the density and growth conditions of the bamboo shoots, and the soil conditions of the area can be comprehensively reflected.

[0023] The equipment is moved to the sampling point, the mounting frame is adjusted, and the sampling cylinder vertically contacts the soil surface of the detection point;

[0024] The driving motor is started, the driving shaft of the driving motor starts to rotate, the hollow screw rod in the transmission mechanism drives the spline rod to rotate, at the same time, the hollow screw rod drives the nut to slide on one side of the mounting frame, the nut slides to drive the spline rod to move downward on the hollow screw rod, so that the sampling cylinder simultaneously performs linear sliding and autorotation;

[0025] Under the combined action of autorotation and linear downward movement, the sampling cylinder drills into the soil by itself without manual pressing, the depth of the sampling cylinder drilled into the soil is controlled according to the requirements of the bamboo shoot production monitoring, and the appropriate sampling depth can be determined according to the distribution of the bamboo shoot root system.

[0026] When the sampling cylinder reaches the preset depth, the sampling cylinder is taken out of the soil, at this time, the soil sample of the depth has been collected in the sampling cylinder, the soil sample in the sampling cylinder is poured into a sample container, and a mark is made, and the information such as the position of the detection point corresponding to the sample and the sampling depth is recorded.

[0027] According to the above steps, soil sampling operations are sequentially performed at other selected detection points, and qualified soil samples can be collected at each detection point.

[0028] (Three) beneficial effects

[0029] Compared with the prior art, the application provides a soil sampling device and a soil sampling method for bamboo shoot production monitoring, and has the following beneficial effects:

[0030] 1. The soil sampling device, by setting the driving motor, hollow screw rod, spline rod and nut, realizes the self-rotation and linear sliding of the sampling cylinder under the driving of the driving motor, does not need manual pressing and can drill into the soil automatically, effectively avoids the body inclination problem caused by the continuous change of the force posture of the operator, ensures that the sampling cylinder always maintains the vertical state, guarantees the verticality of sampling and the integrity of the sample, meets the requirement of the bamboo shoot production monitoring on the accuracy of soil sampling, reduces the operation difficulty and improves the sampling efficiency.

[0031] 2. The soil sampling device, by setting the installation bin, driving disc, driving friction disc, driven friction disc and supporting spring, forms a transmission system with overload protection function, when hard soil or stones are encountered during sampling, the relative sliding between the driving friction disc and the driven friction disc can occur, avoiding the damage of the component structure due to overload, prolonging the service life of the equipment, and cooperating with the rotary encoder and the control panel, the depth of the sampling cylinder inserted into the soil can be accurately recorded and controlled, facilitating the targeted sampling of the key soil layer for bamboo shoot growth and improving the reliability of the monitoring data.

[0032] 3. The soil sampling device, by setting the protective tube and protective sleeve, effectively protects the key parts of the transmission mechanism, reduces the pollution of soil to the transmission parts during soil sampling and the damage of external force collision to the equipment, prolongs the maintenance period and service life of the equipment; by setting the internal thread ring and the threaded block, the stability of the connection between the sampling cylinder and the spline rod is enhanced, ensuring that the sampling cylinder and the spline rod act synchronously during self-rotation and linear movement, and ensuring the stability of the sampling process; by setting the air holes on the sampling cylinder and the push block, and the sawtooth surface on the lower end of the sampling cylinder, the air holes can balance the air pressure inside and outside the sampling cylinder, avoiding the influence of air pressure difference on the soil sample entering the sampling cylinder, the sawtooth surface improves the efficiency of the sampling cylinder drilling into the soil, and the design of the push block facilitates the smooth removal of the soil sample from the sampling cylinder after sampling, further improving the practicality and convenience of the equipment in soil sampling for bamboo shoot production monitoring. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is a schematic view of the three-dimensional structure of the soil sampling device of the present application;

[0034] Figure 2 is a schematic view of the three-dimensional structure of the soil sampling device of the present application;

[0035] Figure 3 is a schematic view of the three-dimensional structure of the soil sampling device of the present application Figure 2 is a schematic view of the three-dimensional structure of the soil sampling device of the present application

[0036] Figure 4 is a schematic view of the three-dimensional structure of the soil sampling device of the present application;

[0037] Figure 5 Partial structure enlarged schematic view at B in the present application Figure 4

[0038] Figure 6 Schematic view of the soil collection sampling device in the present application

[0039] Figure 7 Partial structure enlarged schematic view at C in the present application Figure 6

[0040] Schematic view of the soil collection sampling device in the present application Figure 8

[0041] Figure 9 Schematic view of the soil collection sampling device in the present application

[0042] Figure 10 Schematic view of the soil collection sampling device in the present application

[0043] Figure 11 Partial structure enlarged schematic view at D in the present application Figure 10

[0044] Figure 12 Partial structure enlarged schematic view at E in the present application Figure 10

[0045] In the figure:

[0046] 1, mounting frame; 11, mounting bin; 12, protective tube; 13, protective sleeve; 14, external thread ring;

[0047] 2, drive motor;

[0048] 3, sampling cylinder; 31, perforation; 32, internal thread ring; 33, threaded block; 34, insertion block; 35, push block; 36, air hole;

[0049] 4, transmission mechanism; 41, hollow screw rod; 42, spline rod; 43, nut; 44, drive disc; 45, driving friction disc; 46, driven friction disc; 47, support spring; 48, rotating ring;

[0050] 5, rotary encoder;

[0051] 6, control panel. DETAILED DESCRIPTION

[0052] ​​​​With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be clearly and completely described below, obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the present application.

[0053] Embodiment one

[0054] Please refer to Figure 1 , Figure 2 and Figure 3 , the present application provides a soil sampling device, comprising a mounting frame 1, a drive motor 2, a sampling cylinder 3 and a transmission mechanism 4, the drive motor 2 is fixedly installed on the mounting frame 1, the sampling cylinder 3 is coaxially arranged with the driving shaft of the drive motor 2;

[0055] The transmission mechanism 4 comprises a hollow screw rod 41, a spline shaft 42 and a nut 43, the hollow screw rod 41 is in transmission connection with the driving shaft of the drive motor 2, the spline shaft 42 is in sliding connection with the inner hole of the hollow screw rod 41, and the spline shaft 42 is in rotational connection with the nut 43, the nut 43 is in threaded connection with the outer side wall of the hollow screw rod 41, and the nut 43 is slidingly installed on one side of the mounting frame 1;

[0056] The sampling cylinder 3 is installed on the end of the spline shaft 42 away from the mounting frame 1;

[0057] When the driving shaft of the drive motor 2 rotates, the hollow screw rod 41 drives the spline shaft 42 to rotate, and the hollow screw rod 41 can drive the nut 43 to slide, the nut 43 drives the spline shaft 42 to move on the hollow screw rod 41 when the nut 43 slides, and the sampling cylinder 3 simultaneously performs linear sliding and autorotation, so that the sampling cylinder 3 can drill into the soil by itself without manual pressing to move downward.

[0058] As can be seen from the above, the soil sampling device, by setting the drive motor 2, the hollow screw rod 41, the spline shaft 42 and the nut 43, realizes the autorotation and linear sliding of the sampling cylinder 3 under the driving of the drive motor 2, drills into the soil by itself without manual pressing, effectively avoids the body inclination problem caused by the continuous change of the operator's force posture, ensures that the sampling cylinder 3 always maintains a vertical state, guarantees the verticality of sampling and the integrity of the sample, meets the requirement of soil sampling accuracy for bamboo shoot production monitoring, at the same time reduces the operation difficulty and improves the sampling efficiency.

[0059] When using the device, first move the device to the target sampling point of bamboo shoot production monitoring, adjust the mounting frame 1 to make the sampling cylinder 3 vertically aligned with the soil surface, start the drive motor 2, the drive shaft of the drive motor 2 drives the hollow screw rod 41 to rotate, the hollow screw rod 41 drives the spline rod 42 to rotate while the drive nut 43 slides on the mounting frame 1, and then drives the spline rod 42 to drive the sampling cylinder 3 to rotate and move downward into the soil, and when reaching the preset depth, the sampling cylinder 3 is pulled out to make the sampling cylinder 3 exit the soil, and the sampling is completed.

[0060] Example two

[0061] As shown in Figure 2 , Figure 4 and Figure 5 , the difference between this embodiment and the above-mentioned embodiments is that the mounting frame 1 is fixedly installed with a mounting bin 11, the drive shaft of the drive motor 2 extends into the interior of the mounting bin 11, and one end of the hollow screw rod 41 extends into the interior of the mounting bin 11 and is rotationally connected with the mounting bin 11.

[0062] As can be seen from the above, the mounting bin 11 provides a closed mounting space for the connection part of the drive shaft of the drive motor 2 and the hollow screw rod 41, avoids dust from mixing in to cause interference, and at the same time provides stable support for the hollow screw rod 41 to ensure the stability thereof when rotating.

[0063] The transmission mechanism 4 further includes a drive disc 44, a driving friction disc 45, a driven friction disc 46, and a supporting spring 47, the drive disc 44, the driving friction disc 45, and the driven friction disc 46 are all arranged in the interior of the mounting bin 11, the drive disc 44 is fixedly connected with the drive shaft of the drive motor 2, the driving friction disc 45 is slidingly installed on one side of the drive disc 44, the driven friction disc 46 is fixedly installed on one end of the hollow screw rod 41, the opposite sides of the driving friction disc 45 and the driven friction disc 46 are both provided with friction surfaces, and the driving friction disc 45 and the driven friction disc 46 are in static friction transmission therebetween, and the two ends of the supporting spring 47 are fixedly connected with the drive disc 44 and the driving friction disc 45 respectively.

[0064] As can be seen from the above, by arranging the drive disc 44, the driving friction disc 45, the driven friction disc 46, and the supporting spring 47, a transmission structure with overload protection function is formed, the supporting spring 47 ensures that the driving friction disc 45 and the driven friction disc 46 are in close contact to realize static friction transmission, when a hard obstacle blocks the rotation of the sampling cylinder 3, the driving friction disc 45 and the driven friction disc 46 can slide relatively to avoid component damage, and the reliability of the device is improved.

[0065] Example three

[0066] As shown in Figure 3 , Figure 5 , Figure 6 , Figure 7 , Figure 9 ,Figure 10 、 Figure 11 and Figure 12 As shown in FIGS. 16, 17 and 18, the embodiment is different from the above-mentioned embodiments in that the bottom of the installation bin 11 is fixedly installed with a protective pipe 12, the protective pipe 12 is in sliding connection with a nut 43, the lower end of the spline rod 42 is rotatably installed with a rotating ring 48, the nut 43 and the rotating ring 48 are fixedly installed with a protective sleeve 13, and the protective sleeve 13 is arranged inside the protective pipe 12.

[0067] As can be seen from the above, the cooperation of the protective pipe 12 and the protective sleeve 13 can protect the hollow lead screw 41, the spline rod 42 and the nut 43, reduce the pollution and wear of the components by soil and dust, and prolong the service life of the equipment. The protective sleeve 13 moves with the nut 43 and the rotating ring 48, does not affect the normal work of the components, and limits the rotation of the nut 43 through the protective pipe 12, so that the nut 43 can stably translate when the hollow lead screw 41 rotates.

[0068] The top of the sampling cylinder 3 is provided with a perforation 31, and the inner top of the sampling cylinder 3 is fixedly installed with an internal thread ring 32. The inner side of the internal thread ring 32 is in threaded connection with a threaded block 33, the upper end of the threaded block 33 is fixedly installed with an insertion block 34, the insertion block 34 is fixedly connected with the lower end of the spline rod 42, and the insertion block 34 is inserted with the perforation 31. The rotation direction of the external surface thread of the hollow lead screw 41 is the same as that of the surface thread of the threaded block 33. When the spline rod 42 moves downward to push the sampling cylinder 3 to extend into the soil, the threaded block 33 is locked with the top of the internal thread ring 32, so as to ensure that the sampling cylinder 3 rotates and extends downward with the spline rod 42.

[0069] As can be seen from the above, the through hole 31 provides the mounting channel for the plug block 34, so that the spline rod 42 can transmit power to the sampling cylinder 3 through the plug block 34. The linkage of the sampling cylinder 3 and the spline rod 42 is achieved by the threaded connection of the internal threaded ring 32 and the threaded block 33, and the screw rotation direction of the two is consistent with the screw rotation direction of the outer surface of the hollow lead screw 41, which can ensure the stability of sampling. When the driving motor 2 drives the hollow lead screw 41 to rotate clockwise, which is assumed to be forward rotation, the hollow lead screw 41 will drive the nut 43 to slide downward, and at the same time drive the spline rod 42 to rotate clockwise synchronously. Since the threaded block 33 is fixedly connected with the spline rod 42, it will also rotate clockwise with the spline rod 42. At this time, the internal threaded ring 32 is fixed with the sampling cylinder 3 and is difficult to rotate independently under the action of soil resistance. The clockwise rotation of the threaded block 33 will make it have a tendency to rotate upward along the thread of the internal threaded ring 32, but the spline rod 42 is being pushed downward by the nut 43. This reverse force will make the upper end surface of the threaded block 33 tightly abut against the top of the internal threaded ring 32, forming a jammed state. In this state, the threaded block 33 cannot rotate relative to the internal threaded ring 32, but can only rotate with the internal threaded ring 32 and the sampling cylinder 3 synchronously with the spline rod 42. At the same time, under the downward pushing force of the spline rod 42, the sampling cylinder 3 is also driven to drill into the soil. If the screw directions are inconsistent, for example, the hollow lead screw 41 is clockwise threaded, and the threaded block 33 is counterclockwise threaded. When the spline rod 42 rotates clockwise, the threaded block 33 will rotate downward along the internal threaded ring 32, and cannot form a jammed state, which may cause the sampling cylinder 3 and the spline rod 42 to rotate relatively, affecting the transmission of sampling power and the vertical drilling of the sampling cylinder 3. Therefore, the same screw rotation direction design, combined with the downward movement trend of the spline rod 42, can reliably realize the jamming of the threaded block 33 and the internal threaded ring 32, ensure that the sampling cylinder 3 is completely synchronous with the spline rod 42 during rotation and linear movement, avoid sampling deviation caused by relative displacement, and ensure the stability and accuracy of soil sampling in bamboo shoot production monitoring;

[0070] In the present application, when the sampling cylinder 3 is taken out of the soil, the height of the mounting bracket 1 does not need to be intentionally supported. The hollow lead screw 41 is driven by the driving motor 2 to reverse, and the threaded block 33 is driven to reverse. At this time, the height of the mounting bracket 1 naturally decreases. Since the sampling cylinder 3 and the internal threaded ring 32 are difficult to rotate under the action of soil resistance, the reverse rotation of the threaded block 33 makes it rotate downward along the thread of the internal threaded ring 32, and finally it is taken out from the lower part of the internal threaded ring 32. At this time, the spline rod 42 continues to rotate and cannot drive the sampling cylinder 3 to rotate. Then, through the relative movement of the spline rod 42 and the hollow lead screw 41, the height of the mounting bracket 1 gradually decreases, until most of the protective sleeve 13 moves into the inside of the protective tube 12. At this time, the overall height of the sampling device is relatively low, which is convenient for directly pulling out the sampling cylinder 3 from the soil. In addition, as shown in Figure 9 and Figure 10 , the length of the device can be greatly reduced when the sampling device is contracted.

[0071] The lower end of the threaded block 33 is fixedly installed with a push block 35, and the push block 35 is movably arranged in the inside of the sampling cylinder 3.

[0072] As can be seen from the above, by arranging the push block 35, after sampling is completed, the locking of the inner threaded ring 32 and the threaded block 33 is released, so that the spline rod 42 can move in the inside of the sampling cylinder 3, thereby the push block 35 pushes the soil sample in the sampling cylinder 3 out of the sampling cylinder 3, avoiding the sample remaining in the sampling cylinder 3, and improving the convenience of sampling.

[0073] The protective tube 12 is arranged in the inside of the through hole 31, and the outer surface of the protective tube 12 is fixedly installed with an outer threaded ring 14, which is threadedly matched with the inner side surface of the through hole 31.

[0074] As can be seen from the above, since the protective tube 12 is arranged in the inside of the through hole 31, when carrying the device, the sampling cylinder 3 can abut against one end of the mounting bin 11, thereby reducing the overall length of the sampling equipment, and by arranging the outer threaded ring 14 threadedly matched with the inner side surface of the through hole 31, the sampling cylinder 3 can be fixed to avoid sliding.

[0075] The top of the sampling cylinder 3, the inner threaded ring 32 and the push block 35 are all provided with air holes 36, and the lower end of the sampling cylinder 3 is provided with a sawtooth surface.

[0076] As can be seen from the above, the air holes can balance the air pressure inside and outside the sampling cylinder 3, avoiding the soil sample being difficult to enter the sampling cylinder 3 due to the air pressure difference, and the sawtooth surface enhances the ability of the sampling cylinder 3 to drill into the soil, especially for relatively hard soil, which can improve the sampling efficiency and ensure the smooth sampling.

[0077] Embodiment Four

[0078] As shown in Figs. Figure 5 and Figure 8 The difference between the present embodiment and the above-mentioned embodiments is that the inside of the mounting bin 11 is fixedly installed with a rotary encoder 5, the rotary encoder 5 is sleeved on the hollow lead screw 41, the number of rotations of the hollow lead screw 41 is recorded by the rotary encoder 5, thereby determining the depth of the sampling cylinder 3 inserted into the soil, and the control panel 6 is fixedly installed on the driving motor 2 and is electrically connected with the driving motor 2 and the rotary encoder 5.

[0079] As can be seen from the above, the rotary encoder 5 can accurately record the number of rotations of the hollow lead screw 41, and in combination with the pitch of the lead screw, the insertion depth of the sampling cylinder 3 can be accurately calculated, and the operator can intuitively understand the sampling depth and control the operation of the driving motor 2 through the control panel 6, thereby realizing the accurate control of the sampling depth and meeting the demand for sampling soil at different depths in the production monitoring of bamboo shoots.

[0080] Embodiment Five

[0081] See also Figure 1 The present invention also discloses a soil sampling method for monitoring bamboo shoot production, which comprises the following steps:

[0082] Determine sampling and testing points in bamboo shoot production areas. Based on the density and growth conditions of bamboo shoots, evenly select multiple representative testing points to ensure that the soil conditions in the area are fully reflected;

[0083] Move the device to the sampling point and adjust the mounting frame 1 so that the sampling tube 3 vertically contacts the soil surface at the detection point;

[0084] The drive motor 2 is started, and the drive shaft of the drive motor 2 begins to rotate, driving the spline rod 42 to rotate accordingly through the hollow screw 41 in the transmission mechanism 4. At the same time, the hollow screw 41 drives the nut 43 to slide on one side of the mounting frame 1. When the nut 43 slides, it drives the spline rod 42 to move downward on the hollow screw 41, causing the sampling tube 3 to slide linearly and rotate at the same time;

[0085] The sampling tube 3 drills into the soil by itself under the combined action of rotation and downward linear movement, without manual pressure. The depth of the sampling tube 3 drilling into the soil is controlled according to the needs of bamboo shoot production monitoring. Generally, the appropriate sampling depth can be determined according to the distribution of bamboo shoot roots.

[0086] When the sampling tube 3 reaches the preset depth, the sampling tube 3 is taken out from the soil. At this time, the soil sample of the depth has been collected in the sampling tube 3. The soil sample in the sampling tube 3 is poured into the sample container and marked. The information such as the detection point position and sampling depth corresponding to the sample is recorded;

[0087] Following the above steps, soil sampling operations were carried out at other selected testing points in turn to ensure that qualified soil samples were collected at each testing point.

[0088] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A soil sampling device, comprising a mounting frame, a drive motor, a sampling tube, and a transmission mechanism, characterized in that: The driving motor is fixedly mounted on the mounting frame, and the sampling cylinder is coaxially arranged with the driving shaft of the driving motor; The transmission mechanism includes a hollow screw, a spline rod and a nut, the hollow screw is in transmission connection with the drive shaft of the drive motor, the spline rod is in sliding connection with the inner hole of the hollow screw, and the spline rod is in rotational connection with the nut, the nut is in threaded connection with the outer wall of the hollow screw, and the nut is slidably mounted on one side of the mounting frame; The sampling tube is mounted on an end of the spline rod away from the mounting frame; When the driving shaft of the driving motor rotates, the hollow screw drives the spline rod to rotate accordingly, and the hollow screw can drive the nut to slide. When the nut slides, the spline rod is driven to move on the hollow screw, and the sampling tube slides linearly and rotates at the same time, so that the sampling tube can drill into the soil by itself without human pressure to move the sampling tube downward.

2. A soil sampling device according to claim 1, characterized in that: A mounting chamber is fixedly mounted on the mounting frame, a driving shaft of the driving motor extends into the interior of the mounting chamber, and one end of the hollow screw rod extends into the interior of the mounting chamber and is rotatably connected to the mounting chamber.

3. The soil sampling device according to claim 2, characterized in that: The transmission mechanism also includes a driving plate, an active friction plate, a driven friction plate and a support spring. The driving plate, the active friction plate and the driven friction plate are all arranged inside the installation bin. The driving plate is fixedly connected to the driving shaft of the driving motor. The active friction plate is slidably mounted on one side of the driving plate. The driven friction plate is fixedly mounted on one end of the hollow screw rod. The opposite sides of the active friction plate and the driven friction plate are both provided with friction surfaces, and static friction transmission is achieved between the two. The two ends of the support spring are fixedly connected to the driving plate and the active friction plate respectively.

4. The soil sampling device according to claim 2, characterized in that: A protective tube is fixedly installed at the bottom of the installation bin, and the protective tube is slidably connected to the nut. A rotating ring is rotatably installed at the lower end of the spline rod. A protective sleeve is fixedly installed between the nut and the rotating ring, and the protective sleeve is arranged on the inner side of the protective tube.

5. The soil sampling device according to claim 4, characterized in that: A through-hole is provided on the top of the sampling tube, and an internal threaded ring is fixedly installed on the inner top of the sampling tube, the inner side of the internal threaded ring is threadedly connected to a threaded block, an insert block is fixedly installed on the upper end of the threaded block, the insert block is fixedly connected to the lower end of the spline rod, and the insert block is plugged into the through-hole, the rotation direction of the thread on the outer surface of the hollow screw rod is the same as the rotation direction of the thread on the surface of the threaded block, when the spline rod moves downward to push the sampling tube to extend into the soil, the threaded block and the top of the internal threaded ring are stuck, thereby ensuring that the sampling tube rotates and extends downward with the spline rod.

6. The soil sampling device according to claim 5, characterized in that: A push block is fixedly mounted on the lower end of the threaded block, and the push block is movably arranged inside the sampling cylinder.

7. The soil sampling device according to claim 5, characterized in that: The protection tube is arranged inside the through hole, and an external thread ring is fixedly installed on the upper end of the outer surface of the protection tube, and the external thread ring is adapted to the inner side thread of the through hole.

8. The soil sampling device according to claim 5, characterized in that: The top of the sampling tube, the internal thread ring and the push block are all provided with air holes, and the lower end of the sampling tube is provided with a serrated surface.

9. The soil sampling device according to claim 3, characterized in that: A rotary encoder is fixedly installed inside the installation bin, and the rotary encoder is sleeved on the hollow screw rod. The rotary encoder records the number of rotations of the hollow screw rod, thereby determining the depth of the sampling tube inserted into the soil. A control panel is fixedly installed on the drive motor, and the control panel is electrically connected to the drive motor and the rotary encoder respectively.

10. A soil sampling method for monitoring bamboo shoot production, using a soil sampling device according to any one of claims 1 to 9, characterized in that: The specific steps are: Determine sampling and testing points in bamboo shoot production areas. Based on the density and growth conditions of bamboo shoots, evenly select multiple representative testing points to ensure that the soil conditions in the area are fully reflected; Move the equipment to the sampling point and adjust the mounting bracket so that the sampling tube contacts the soil surface at the testing point vertically; Start the drive motor, and the drive shaft of the drive motor begins to rotate, driving the spline rod to rotate through the hollow screw in the transmission mechanism. At the same time, the hollow screw drives the nut to slide on one side of the mounting frame. When the nut slides, the spline rod is driven to move downward on the hollow screw, causing the sampling tube to slide linearly and rotate at the same time; The sampling tube drills into the soil by itself under the combined action of self-rotation and downward linear movement, without the need for manual pressure. The depth of the sampling tube drilling into the soil is controlled according to the needs of bamboo shoot production monitoring. Generally, the appropriate sampling depth can be determined according to the distribution of bamboo shoot roots. When the sampling tube reaches the preset depth, the sampling tube is removed from the soil. At this time, the soil sample at that depth has been collected in the sampling tube. The soil sample in the sampling tube is poured into the sample container and marked. The corresponding detection point position and sampling depth of the sample are recorded. Following the above steps, soil sampling operations were carried out at other selected testing points in turn to ensure that qualified soil samples were collected at each testing point.

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