Sampling device for water and soil conservation monitoring and use method thereof

Abstract

The invention belongs to the technical field of water and soil conservation, and particularly relates to a sampling device for water and soil conservation monitoring and a use method of the sampling device. A telescopic cylinder; an output shaft of a first motor drives a reciprocating screw rod to rotate, the reciprocating screw rod drives a lifting block to move, the lifting block drives one end of a connecting rod to move downwards, so that the other end of the connecting rod is driven to press a sliding block to slide along a sliding opening, the sliding block drives a sampling box to slide outwards and stretch out of a sampling barrel, and then a second motor is started again. The sampling barrel is driven by the second motor to rotate for sampling, and after sampling is completed, the sampling box is retracted into the sampling barrel again; wherein in the withdrawing process of the sampling box, impurities such as branches, leaves or aquatic plants may exist in sampling soil, the sampling box is inconvenient to retract into the sampling barrel, and by arranging a serrated knife and a baffle, the sampling soil can be blocked and prevented from falling into the sampling barrel, the impurities can be cut off, and the sampling box can be quickly retracted into the sampling barrel.

Description

Technical Field

[0001] The invention belongs to the technical field of soil and water conservation, and in particular to a sampling device for soil and water conservation monitoring and a use method thereof. Background Art

[0002] Soil and water conservation monitoring refers to the long-term investigation, observation and analysis of the occurrence, development, hazards and benefits of soil and water conservation. Through soil and water conservation monitoring, we can find out the types, intensity and distribution characteristics of soil and water erosion, hazards and their impacts, occurrence and development laws, and dynamic change trends. This is of great significance to the macro-decision-making on comprehensive soil and water loss control and ecological environment construction, as well as the scientific, reasonable and systematic deployment of soil and water conservation measures. Sampling devices will be used when conducting soil and water conservation monitoring.

[0003] A Chinese patent with publication number CN220153940U discloses a sediment sampler based on soil and water conservation monitoring, including a base, a nut is fixedly installed on the top of the base, and a threaded tube is connected to the inner thread of the nut, the bottom end of the threaded tube extends to the bottom of the base and a drill pipe is fixedly installed, and a cone head is slidably connected in the drill pipe, and the bottom end of the cone head extends to the bottom of the drill pipe; the gear is driven to rotate by starting the driving motor, and when the gear rotates, the gear ring can be rotated, so that the two connecting rods can make a circular motion, and when the two connecting rods make a circular motion, the connecting plate can be driven to rotate, and when the connecting plate rotates, the threaded tube can be driven to rotate, and the drill pipe can be rotated at this time, and the threaded connection between the threaded tube and the nut can move downward when the threaded tube rotates, so as to provide a downward thrust to the drill pipe, so that the drill pipe can be excavated deep into the surface until the drill pipe is lowered to a specified depth to collect soil.

[0004] In the above technology, when it is necessary to sample soil at different depths, the sampler can only be used to drill holes of different depths for multiple times, and then collect and sample soil at different depths. It is impossible to collect soil at different depths at the same time, which is inconvenient to operate and labor-intensive, resulting in low work efficiency.

[0005] To this end, the present invention provides a sampling device for soil and water conservation monitoring and a method of using the same. Summary of the invention

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

[0007] The technical solution adopted by the present invention to solve the technical problem is: a sampling device for soil and water conservation monitoring described in the present invention comprises:

[0008] outer cylinder;

[0009] The telescopic cylinder is slidably connected to the inside of the outer cylinder and is provided with an electric push rod;

[0010] The connecting cylinder is fixedly connected to the bottom of the telescopic cylinder and is provided with a first motor;

[0011] The sampling tube is threadedly connected to the bottom end of the connecting tube, and a drill bit is fixedly connected to the bottom;

[0012] A sampling mechanism is arranged in the sampling tube;

[0013] The sampling mechanism includes a plurality of sampling boxes; the first motor is fixedly connected to the top inner wall of the connecting tube, the output shaft of the first motor is fixedly connected to a reciprocating screw, the bottom of the reciprocating screw is rotatably connected to the bottom inner wall of the sampling tube through a bearing; three lifting blocks are threadedly connected to the reciprocating screw, three circular plates are fixedly connected to the inner wall of the sampling tube, two sliding openings are symmetrically provided on the circular plates, and sliders are slidably connected in the sliding openings, and connecting rods are rotatably connected between the sliders and the lifting blocks through pin shafts; the sampling boxes are respectively fixedly connected to the bottoms of the sliders, and the sampling boxes are slidably connected to the side walls of the sampling tube;

[0014] The bottom of the circular plate is fixedly connected with a baffle, the side wall of the baffle is fixedly connected with a serrated knife, one end of the serrated knife is aligned with the outer side wall of the sampling tube, and the baffle and the serrated knife are respectively attached to the sampling box;

[0015] The interior of the sampling box is provided with two slide grooves, and driving plates are slidably connected in the two slide grooves, and the driving plates are in contact with the inner wall of the sampling box.

[0016] Preferably, a first push rod is fixedly connected to the side wall of the driving plate away from the serrated knife, and the first push rod passes through the sampling box; one end of the first push rod is rotatably connected to a second push rod, and the diameter of the second push rod is slightly smaller than that of the first push rod; the second push rod is inserted into the side wall of the sampling box.

[0017] Preferably, grooves are provided on the side walls of the sampling box, a plug is fixed in the groove, one end of the plug is fixed to a clamping plate, and the other end of the plug is inserted in the second push rod; a spring is sleeved on the outer side of the plug, and the two ends of the spring are respectively fixed to the clamping plate and the inner wall of the groove.

[0018] Preferably, the top of the outer cylinder is rotatably connected to a control box via a bearing, a second motor is fixedly connected to the inner wall of the control box, and the output shaft of the second motor is fixedly connected to the top of the outer cylinder; a control button is installed on the side wall of the control box; a handle is fixedly connected to the top of the control box, and a calibration mechanism is provided on the side wall of the control box.

[0019] Preferably, the calibration mechanism includes a transparent shell, a fan-shaped disk and a gravity ball; the transparent shell is fixedly connected to the outer wall of the control box, the fan-shaped disk is fixedly connected to the inner wall of the transparent shell, a rocker arm is rotatably connected to the inner wall of the transparent shell via a pin shaft, and the gravity ball is fixedly connected to the bottom of the rocker arm; a light strip is fixedly connected to the fan-shaped disk, and the light strip is parallel to the central axis of the control box; two limit columns are fixedly connected to the fan-shaped disk, and the limit columns are symmetrically arranged on both sides of the rocker arm.

[0020] Preferably, an electric push rod is fixedly connected to the top inner wall of the outer cylinder, and the output end of the electric push rod is fixedly connected to the bottom inner wall of the telescopic cylinder; two limit rods are symmetrically fixedly connected to the outer wall of the sampling cylinder, and the limit rods both slide on the inner wall of the outer cylinder.

[0021] Preferably, a fixing block is fixedly connected to the outer wall of the outer cylinder, and three anchor rods are rotatably connected to the fixing block via a pin shaft.

[0022] Preferably, a method for using a sampling device for soil and water conservation monitoring comprises the following steps:

[0023] S1: Place the sampling tube on the soil to be sampled, adjust the pendulum rod and the light bar to align through the calibration mechanism, press down to vertically insert the sampling tube into the soil through the anchor rod;

[0024] S2: Turn on the second motor and the electric push rod to drive the drill bit to drill downward, and turn off the second motor and the electric push rod when the hole is drilled to a suitable depth;

[0025] S3: Turn on the first motor to drive the sampling box to extend out of the sampling tube through the first motor, turn on the second motor again to drive the sampling tube to rotate, and take samples. After the sampling is completed, retract the sampling box into the sampling tube again;

[0026] S4: Finally, turn on the electric push rod, take out the sampling tube, and then extend the sampling box out of the sampling tube to take out the soil for testing.

[0027] The beneficial effects of the present invention are as follows:

[0028] 1. A sampling device for soil and water conservation monitoring and a method of using the same described in the present invention, through the cooperation of a sampling tube, a sampling box, a slider, a serrated knife and a driving plate; the reciprocating screw is driven to rotate by the output shaft of the first motor, the lifting block is driven to move by the reciprocating screw, one end of the connecting rod is driven to move downward by the lifting block, thereby driving the other end of the connecting rod to press the slider to slide along the sliding opening, the sampling box is driven to slide outward by the slider, the sampling tube is extended, and then the second motor is turned on again, the sampling tube is driven to rotate by the second motor to sample, and after the sampling is completed, the sampling box is retracted into the sampling tube again; wherein during the process of retracting the sampling box, there may be impurities such as branches, leaves or aquatic plants in the sampled soil, It is inconvenient to retract the sampling box into the sampling tube. By setting a serrated knife and a baffle, not only can the sampled soil be blocked to prevent it from falling into the sampling tube, but also impurities can be cut off, so that the sampling box can be quickly retracted into the sampling tube; finally, the electric push rod is turned on to take out the sampling tube. During the inspection, it is necessary to extend the sampling box out of the sampling tube, and by pushing the card plate to one side, the card plate drives the plug column to move, and the plug column leaves the second push rod, and the fixation of the second push rod is released, so that the second push rod can be taken out, rotated to align with the first push rod, and the drive plate can be pushed. The drive plate slides along the slide groove, which can not only quickly push out the sampled soil, but also facilitate the scraping of the sampled soil on the inner wall of the sampling box, so as to achieve the effect of cleaning the inner wall of the sampling box.

[0029] 2. The present invention discloses a sampling device for soil and water conservation monitoring and a method of using the same. The device comprises a light bar and a swing rod. First, the sampling tube is placed on the soil to be sampled. If the positions of the swing rod and the light bar are not aligned, the sampling tube is tilted. The handle needs to be properly rotated until the swing rod and the light bar are not aligned. The sampling tube is then pressed downward to vertically insert the sampling tube into the soil through the anchor rod, and then drilling is performed. The gravity ball is set to ensure that the swing rod is always vertically downward, and the limit rod is set to prevent the swing amplitude of the swing rod from being too large to cause damage to the transparent shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention will be further described below in conjunction with the accompanying drawings.

[0031] Figure 1 is a stereogram of the present invention;

[0032] Figure 2 is a cross-sectional view of the present invention;

[0033] Figure 3 It is a schematic diagram of the structure of the circular plate and the sampling box in the present invention;

[0034] Figure 4 It is a structural schematic diagram of the driving plate in the present invention;

[0035] Figure 5 is a schematic structural diagram of a first push rod and a second push rod in the present invention;

[0036] Figure 6 It is a schematic diagram of the structure of the outer cylinder and the telescopic cylinder in the present invention;

[0037] Figure 7 It is a schematic diagram of the structure of the fan-shaped disk in the present invention;

[0038] Figure 8 is a flow chart of a method in one embodiment of the present invention;

[0039] In the figure: 1. outer tube; 11. telescopic tube; 12. fixed block; 13. anchor rod; 14. electric push rod; 15. limit rod; 2. sampling tube; 21. drill bit; 22. connecting tube; 23. first motor; 24. reciprocating screw; 241. lifting block; 242. round plate; 243. connecting rod; 244. slider; 245. sliding port; 246. sampling box; 247. baffle; 248. slide groove; 249. serrated knife; 25. driving plate; 251. first push rod; 252. second push rod; 253. plug column; 254. card plate; 255. spring; 3. control box; 31. handle; 32. transparent shell; 321. fan-shaped disk; 322. pendulum; 323. gravity ball; 324. limit column; 325. light bar; 33. control button; 34. second motor. DETAILED DESCRIPTION

[0040] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0041] like Figures 1 to 7As shown, a sampling device for soil and water conservation monitoring described in an embodiment of the present invention comprises: an outer tube 1; a telescopic tube 11, which is slidably connected to the inside of the outer tube 1, and an electric push rod 14 is provided inside; a connecting tube 22, which is fixedly connected to the bottom of the telescopic tube 11, and a first motor 23 is provided inside; a sampling tube 2, which is threadedly connected to the bottom end of the connecting tube 22, and a drill bit 21 is fixedly connected to the bottom; a sampling mechanism is arranged in the sampling tube 2; the sampling mechanism includes a plurality of sampling boxes 246; the first motor 23 is fixedly connected to the top inner wall of the connecting tube 22, and the output shaft of the first motor 23 is fixedly connected to a reciprocating screw rod 24, and the bottom of the reciprocating screw rod 24 is rotatably connected to the bottom inner wall of the sampling tube 2 through a bearing; three lifting blocks 241 are threadedly connected to the reciprocating screw rod 24, and three circular plates 242 are fixedly connected to the inner wall of the sampling tube 2. Two sliding openings 245 are symmetrically provided on the plate 242, and sliders 244 are slidably connected in the sliding openings 245, and connecting rods 243 are rotatably connected between the sliders 244 and the lifting block 241 through a pin shaft; the sampling boxes 246 are respectively fixed to the bottom of the sliders 244, and the sampling boxes 246 are slidably connected to the side walls of the sampling tube 2; baffles 247 are fixed to the bottom of the circular plate 242, and serrated knives 249 are fixed to the side walls of the baffles 247, one end of the serrated knife 249 is aligned with the outer side wall of the sampling tube 2, and the baffles 247 and the serrated knife 249 are respectively fitted with the sampling box 246; two sliding grooves 248 are provided inside the sampling box 246, and driving plates 25 are slidably connected in the two sliding grooves 248, and the driving plates 25 are fitted with the inner walls of the sampling box 246.

[0042] In the prior art, when it is necessary to sample soil at different depths, the soil at different depths can only be sampled by drilling holes at different depths for multiple times, but it is impossible to sample soil at different depths at the same time. When the sampling mechanism provided by the present invention is used, the sampling tube 2 is first placed on the soil to be sampled, and the sampling tube 2 is vertically inserted into the soil. Then, the second motor 34 and the electric push rod 14 are turned on, and the drill bit 21 is driven by the second motor 34 and the electric push rod 14 to drill a hole downward until the hole is drilled to a suitable depth, and the second motor 34 and the electric push rod 14 can be turned off. Then, the first motor 23 is turned on, and the reciprocating screw 24 is driven to rotate by the output shaft of the first motor 23, and the lifting block 241 is driven to move by the reciprocating screw 24, and one end of the connecting rod 243 is driven to move downward by the lifting block 241, thereby driving the other end of the connecting rod 243 to press the sliding block 244 to slide along the sliding opening 245, and The slider 244 drives the sampling box 246 to slide outward and extend the sampling tube 2, and then the second motor 34 is turned on again, and the sampling tube 2 is driven to rotate by the second motor 34 to perform sampling. After the sampling is completed, the sampling box 246 is retracted into the sampling tube 2 again; during the retraction of the sampling box 246, there may be impurities such as branches, leaves or aquatic plants in the sampled soil, which makes it inconvenient to retract the sampling box 246 into the sampling tube 2. By providing a serrated knife 249 and a baffle 247, not only can the sampled soil be blocked to prevent it from falling into the sampling tube 2, but impurities such as branches, leaves or aquatic plants can also be cut off, so that the sampling box 246 can be quickly retracted into the sampling tube 2; finally, the electric push rod 14 is turned on to take out the sampling tube 2. During the detection, it is necessary to extend the sampling box 246 out of the sampling tube 2 and squeeze out the soil through the driving plate 25, so that it can be used for detection; wherein the first motor 23 is set as a forward and reverse motor to facilitate the extension and retraction of the sampling box 246.

[0043] like Figure 5 As shown, a first push rod 251 is fixedly connected to the side wall of the driving plate 25 away from the serrated knife 249, and the first push rod 251 passes through the sampling box 246; one end of the first push rod 251 is rotatably connected to a second push rod 252, and the diameter of the second push rod 252 is slightly smaller than the diameter of the first push rod 251; the second push rod 252 is inserted into the side wall of the sampling box 246.

[0044] The first push rod 251 and the second push rod 252 provided by the present invention are used to push the driving plate 25 to move when in use, wherein the second push rod 252 is set as a portable structure and does not affect the extension and retraction of the sampling box 246. When in use, it is only necessary to open the second push rod 252 and rotate it to align with the first push rod 251 to push the driving plate 25. The driving plate 25 slides along the slide groove 248, which can not only quickly push out the sampled soil, but also facilitate the scraping of the sampled soil on the inner wall of the sampling box 246, thereby achieving the purpose of cleaning the inner wall of the sampling box 246.

[0045] like Figure 5 As shown, the side walls of the sampling box 246 are provided with grooves, and the grooves are fixed with plugs 253. One end of the plugs 253 is fixed with a clamping plate 254, and the other end of the plugs 253 is inserted into the second push rod 252. The outer side of the plugs 253 is sleeved with a spring 255, and the two ends of the spring 255 are respectively fixed to the clamping plate 254 and the inner wall of the groove.

[0046] The plug post 253 provided by the present invention prevents the second push rod 252 from loosening when in use. When it needs to be opened, the card plate 254 is pushed to one side, and the card plate 254 drives the plug post 253 to move, and the plug post 253 leaves the second push rod 252, thereby releasing the fixation of the second push rod 252 and taking out the second push rod 252. When it needs to be fixed, the card plate 254 is released, and under the action of the spring 255, the card plate 254 and the plug post 253 are driven to move quickly. The plug post 253 is inserted on the second push rod 252 to limit the second push rod 252.

[0047] like Figure 1 to Figure 2 As shown, the top of the outer cylinder 1 is rotatably connected to the control box 3 through a bearing, a second motor 34 is fixedly connected to the inner wall of the control box 3, and the output shaft of the second motor 34 is fixedly connected to the top of the outer cylinder 1; a control button 33 is installed on the side wall of the control box 3; a handle 31 is fixedly connected to the top of the control box 3, and a calibration mechanism is provided on the side wall of the control box 3.

[0048] The second motor 34 provided by the present invention is used to drive the rotation of the outer tube 1, the telescopic tube 11, the sampling tube 2 and the drill bit 21 when in use. By setting the control button 33, it is convenient to control the opening and closing of the first motor 23, the second motor 34 and the electric push rod 14; by setting the calibration mechanism, it is convenient to calibrate the sampling tube 2 to a vertical state for sampling.

[0049] like Figure 7 As shown, the calibration mechanism includes a transparent shell 32, a fan-shaped disk 321 and a gravity ball 323; the transparent shell 32 is fixedly connected to the outer wall of the control box 3, the fan-shaped disk 321 is fixedly connected to the inner wall of the transparent shell 32, the inner wall of the transparent shell 32 is rotatably connected with a rocker 322 through a pin shaft, and the gravity ball 323 is fixedly connected to the bottom of the rocker 322; a light strip 325 is fixedly connected to the fan-shaped disk 321, and the light strip 325 is parallel to the central axis of the control box 3; two limit posts 324 are fixedly connected to the fan-shaped disk 321, and the limit posts 324 are symmetrically arranged on both sides of the rocker 322.

[0050] When the calibration mechanism provided by the present invention is used, the sampling tube 2 is first placed on the soil to be sampled, and the positions of the pendulum rod 322 and the light bar 325 are observed. If the pendulum rod 322 and the light bar 325 are not aligned, it means that the sampling tube 2 is tilted, and the handle 31 needs to be properly rotated until the pendulum rod 322 and the light bar 325 are not aligned, and the sampling tube 2 is vertically inserted into the soil through the anchor rod 13 by pressing downward, and then drilling is performed; by setting the gravity ball 323, it is ensured that the pendulum rod 322 is always vertically downward, and by setting the limit rod 15, it is prevented that the swing amplitude of the pendulum rod 322 is too large to cause damage to the transparent shell 32.

[0051] like Figure 6 As shown, an electric push rod 14 is fixedly connected to the top inner wall of the outer tube 1, and the output end of the electric push rod 14 is fixedly connected to the bottom inner wall of the telescopic tube 11; two limit rods 15 are symmetrically fixedly connected to the outer wall of the sampling tube 2, and the limit rods 15 both slide on the inner wall of the outer tube 1.

[0052] When the limiting rod 15 provided by the present invention is in use, when the electric push rod 14 is opened, the telescopic cylinder 11 is driven to move through the output end of the electric push rod 14. When the telescopic cylinder 11 moves, the telescopic cylinder 11 drives the limiting rod 15 to move. The limiting rod 15 slides on the inner wall of the outer cylinder 1, and the telescopic cylinder 11 is limited to move in the vertical direction through the limiting rod 15.

[0053] like Figure 1 As shown, a fixing block 12 is fixedly connected to the outer wall of the outer cylinder 1, and three anchor rods 13 are rotatably connected to the fixing block 12 via pins.

[0054] When the anchor rod 13 provided by the present invention is in use, the anchor rod 13 fixes the sampling tube 2 and the outer tube 1, thereby facilitating the sampling tube 2 to be kept stable in the vertical direction and preventing the sampling tube 2 from tilting when the second motor 34 is working.

[0055] like Figure 8 As shown, a method for using a sampling device for soil and water conservation monitoring comprises the following steps:

[0056] S1: Place the sampling tube 2 on the soil to be sampled, adjust the pendulum rod 322 and the light bar 325 to align through the calibration mechanism, and press down to vertically insert the sampling tube 2 into the soil through the anchor rod 13;

[0057] S2: Turn on the second motor 34 and the electric push rod 14 to drive the drill bit 21 to drill downwards, and turn off the second motor 34 and the electric push rod 14 when the drilling reaches a suitable depth;

[0058] S3: Turn on the first motor 23, drive the sampling box 246 to extend out of the sampling tube 2 through the first motor 23, turn on the second motor 34 again to drive the sampling tube 2 to rotate, and perform sampling. After the sampling is completed, retract the sampling box 246 into the sampling tube 2 again;

[0059] S4: Finally, the electric push rod 14 is turned on, the sampling tube 2 is taken out, and then the sampling box 246 is extended out of the sampling tube 2 to take out the soil for detection.

[0060] Working principle: first, place the sampling tube 2 on the soil to be sampled, and insert the sampling tube 2 vertically into the soil; then turn on the second motor 34 and the electric push rod 14, and drive the drill bit 21 to drill downwards through the second motor 34 and the electric push rod 14 until the hole is drilled to a suitable depth, and then turn off the second motor 34 and the electric push rod 14; then turn on the first motor 23, and drive the reciprocating screw 24 to rotate through the output shaft of the first motor 23, and drive the lifting block 241 to move through the reciprocating screw 24, and drive the connecting rod 24 through the lifting block 241 3 moves downward, thereby driving the other end of the connecting rod 243 to press the slider 244 to slide along the sliding opening 245, and the slider 244 drives the sampling box 246 to slide outward and extend the sampling tube 2, and then the second motor 34 is turned on again, and the sampling tube 2 is driven to rotate by the second motor 34 to perform sampling. After the sampling is completed, the sampling box 246 is retracted into the sampling tube 2 again; during the process of retracting the sampling box 246, there may be impurities such as branches, leaves or water plants in the sampled soil, which makes it inconvenient to retract the sampling box 246 into the sampling tube 2. By providing the serrated knife 249 and the baffle 247, not only can the sampled soil be blocked to prevent it from falling into the sampling tube 2, but also impurities such as branches, leaves or water plants can be cut off, so that the sampling box 246 can be quickly retracted into the sampling tube 2; finally, the electric push rod 14 is turned on to take out the sampling tube 2. When testing, it is necessary to extend the sampling box 246 out of the sampling tube 2, and by pushing the card plate 254 to one side, the card plate 254 drives the plug post 253 to move, and the plug post 253 leaves the second push rod 252, thereby releasing the fixation of the second push rod 252, that is, The second push rod 252 can be taken out and rotated to align with the first push rod 251 to push the driving plate 25. The driving plate 25 slides along the slide groove 248, which can not only quickly push out the sampled soil, but also facilitate the scraping of the sampled soil on the inner wall of the sampling box 246, so as to achieve the function of cleaning the inner wall of the sampling box 246. Then, the second push rod 252 is closed, and the clamping plate 254 is released. Under the action of the spring 255, the clamping plate 254 and the plug 253 are driven to move quickly. The plug 253 is inserted on the second push rod 252 to limit the second push rod 252.

[0061] When the calibration mechanism is in use, the sampling tube 2 is first placed on the soil to be sampled, and the positions of the pendulum rod 322 and the light bar 325 are observed. If the pendulum rod 322 and the light bar 325 are not aligned, it means that the sampling tube 2 is tilted, and the handle 31 needs to be properly rotated until the pendulum rod 322 and the light bar 325 are not aligned, and the sampling tube 2 is vertically inserted into the soil through the anchor rod 13 by pressing downward, and then drilling is performed; by setting the gravity ball 323, it is ensured that the pendulum rod 322 is always vertically downward, and by setting the limit rod 15, the swing amplitude of the pendulum rod 322 is prevented from being too large to cause damage to the transparent shell 32.

[0062] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A sampling device for soil and water conservation monitoring, comprising: outer cylinder(1); A telescopic cylinder (11) is slidably connected to the interior of the outer cylinder (1) and is provided with an electric push rod (14); A connecting cylinder (22) is fixedly connected to the bottom of the telescopic cylinder (11) and is provided with a first motor (23) therein; A sampling tube (2) is threadedly connected to the bottom end of the connecting tube (22), and a drill bit (21) is fixedly connected to the bottom; A sampling mechanism is arranged in the sampling tube (2); Features: The sampling mechanism comprises a plurality of sampling boxes (246); the first motor (23) is fixedly connected to the top inner wall of the connecting tube (22); the output shaft of the first motor (23) is fixedly connected to a reciprocating screw rod (24); the bottom of the reciprocating screw rod (24) is rotatably connected to the bottom inner wall of the sampling tube (2) via a bearing; three lifting blocks (241) are threadedly connected to the reciprocating screw rod (24); three circular plates (242) are fixedly connected to the inner wall of the sampling tube (2); two sliding openings (245) are symmetrically provided on the circular plates (242); sliders (244) are slidably connected in the sliding openings (245); a connecting rod (243) is rotatably connected between the sliders (244) and the lifting blocks (241) via a pin shaft; the sampling boxes (246) are respectively fixedly connected to the bottom of the sliders (244); the sampling boxes (246) are slidably connected to the side walls of the sampling tube (2); The bottom of the circular plate (242) is fixedly connected with a baffle (247), the side wall of the baffle (247) is fixedly connected with a serrated knife (249), one end of the serrated knife (249) is aligned with the outer side wall of the sampling tube (2), and the baffle (247) and the serrated knife (249) are respectively attached to the sampling box (246); The sampling box (246) is provided with two slide grooves (248) inside, and the two slide grooves (248) are slidably connected with a driving plate (25), and the driving plate (25) is in contact with the inner wall of the sampling box (246).

2. A sampling device for soil and water conservation monitoring according to claim 1, characterized in that: A first push rod (251) is fixedly connected to the side wall of the driving plate (25) away from the serrated knife (249), and the first push rod (251) passes through the sampling box (246); one end of the first push rod (251) is rotatably connected to a second push rod (252), and the diameter of the second push rod (252) is slightly smaller than the diameter of the first push rod (251); the second push rod (252) is inserted into the side wall of the sampling box (246).

3. A sampling device for soil and water conservation monitoring according to claim 2, characterized in that: The side walls of the sampling box (246) are provided with grooves, and the grooves are fixed with plugs (253), one end of the plugs (253) is fixed with a clamping plate (254), and the other end of the plugs (253) is inserted into the second push rod (252); the outer side of the plugs (253) is sleeved with a spring (255), and the two ends of the spring (255) are respectively fixed to the clamping plate (254) and the inner wall of the groove.

4. A sampling device for soil and water conservation monitoring according to claim 3, characterized in that: The top of the outer cylinder (1) is rotatably connected to a control box (3) via a bearing; a second motor (34) is fixedly connected to the inner wall of the control box (3); an output shaft of the second motor (34) is fixedly connected to the top of the outer cylinder (1); a control button (33) is installed on the side wall of the control box (3); a handle (31) is fixedly connected to the top of the control box (3); and a calibration mechanism is provided on the side wall of the control box (3).

5. A sampling device for soil and water conservation monitoring according to claim 4, characterized in that: The calibration mechanism comprises a transparent shell (32), a sector disk (321) and a gravity ball (323); the transparent shell (32) is fixedly connected to the outer wall of the control box (3); the sector disk (321) is fixedly connected to the inner wall of the transparent shell (32); a swing rod (322) is rotatably connected to the inner wall of the transparent shell (32) via a pin shaft; the gravity ball (323) is fixedly connected to the bottom of the swing rod (322); a light bar (325) is fixedly connected to the sector disk (321), and the light bar (325) is parallel to the central axis of the control box (3); two limit posts (324) are fixedly connected to the sector disk (321), and the limit posts (324) are symmetrically arranged on both sides of the swing rod (322).

6. A sampling device for soil and water conservation monitoring according to claim 5, characterized in that: An electric push rod (14) is fixedly connected to the top inner wall of the outer cylinder (1), and the output end of the electric push rod (14) is fixedly connected to the bottom inner wall of the telescopic cylinder (11); two limit rods (15) are symmetrically fixedly connected to the outer wall of the sampling cylinder (2), and the limit rods (15) both slide on the inner wall of the outer cylinder (1).

7. A sampling device for soil and water conservation monitoring according to claim 6, characterized in that: A fixing block (12) is fixedly connected to the outer wall of the outer cylinder (1), and three anchor rods (13) are rotatably connected to the fixing block (12) via a pin shaft.

8. A method for using a sampling device for soil and water conservation monitoring, applicable to a sampling device for soil and water conservation monitoring according to any one of claims 1 to 7, characterized in that: The method of use includes the following steps: S1: placing the sampling tube (2) on the soil to be sampled, adjusting the pendulum rod (322) and the light strip (325) to align through the calibration mechanism, and pressing downward to vertically insert the sampling tube (2) into the soil through the anchor rod (13); S2: Turn on the second motor (34) and the electric push rod (14), drive the drill bit (21) to drill downwards, and turn off the second motor (34) and the electric push rod (14) when the hole is drilled to a suitable depth; S3: turning on the first motor (23), driving the sampling box (246) to extend out of the sampling tube (2) through the first motor (23), turning on the second motor (34) again to drive the sampling tube (2) to rotate, and sampling is performed. After the sampling is completed, the sampling box (246) is retracted into the sampling tube (2) again; S4: Finally, the electric push rod (14) is turned on, the sampling tube (2) is taken out, and then the sampling box (246) is extended out of the sampling tube (2) to take out the soil for testing.

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