A portable soil sampling device

Abstract

The present invention belongs to the technical field of soil detection, and specifically is a portable soil sampling device, comprising a base plate, wherein the upper surface of the base plate is symmetrically fixedly connected with a support frame, a movable plate is slidably connected between two of the support frames, an extension rod is rotatably connected inside the movable plate, a first cone head is snap-connected at one end of the extension rod, a plurality of sampling holes are provided on the outer wall of the first cone head, a second cone head is slidably connected inside each of the sampling holes, and the second cone head is rotatably connected to the inner wall of the sampling hole, an opening is provided on the outer wall of the second cone head, a plurality of teeth are fixedly connected to the inner wall of the opening, a rotating rod is fixedly connected at one end of the second cone head, the sampling holes can be dredged, thus avoiding the problem of blocky soil blocking the sampling holes, and the second cone head can also collect soil, so that the soil can be collected inside the first cone head, thereby increasing the sampling efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of soil detection technology, in particular to a portable soil sampling device. Background Art

[0002] In order to formulate fertilization plans, irrigation strategies and pest and disease control measures, farmers need to understand key information such as the nutrients, microbial content, pH and alkalinity in the soil. By collecting and analyzing soil samples, they can understand the above data in detail, which will help improve the yield and quality of crops and promote the sustainable development of agricultural production.

[0003] A patent application with publication number CN116499798B discloses a soil sampling device for soil pollution control and remediation inspection, including a cart plate, two push handles installed on the top of the cart plate, four supporting legs arranged at the bottom of the cart plate, universal wheels arranged at the bottom of the four supporting legs, a rotating mechanism rotatably installed on the top of the cart plate, a transverse pillar is connected to the rotating mechanism, a telescopic groove is opened on the left side of the transverse pillar, a telescopic rod is slidably installed in the telescopic groove, a transverse adjustment mechanism is arranged on the transverse pillar, the transverse adjustment mechanism is connected to the telescopic rod, a rectangular box is installed at the front end of the telescopic rod, a winding mechanism is arranged in the rectangular box, and a cylinder is connected to the winding mechanism.

[0004] The above-mentioned prior art moves the sampling device downward through the soil. When the sampling device reaches the soil sampling position, the through hole on the surface of the sampling device is opened, so that the soil enters the interior of the sampling device through the through hole, and then the soil sampling operation is completed;

[0005] During use of the above-mentioned prior art, when the deep soil is in a lumpy shape, the lumpy soil is stuck inside the above-mentioned through hole and blocks the above-mentioned through hole, which reduces the efficiency of subsequent soil entering the interior of the sampling tube, resulting in the need to sample the soil again, thereby increasing the time for soil sampling and reducing the efficiency of soil sampling. In addition, the soil may be adhesive due to moisture and other reasons, thereby adhering to the inside of the above-mentioned through hole and causing blockage.

[0006] To this end, the present invention provides a portable soil sampling device. Summary of the invention

[0007] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0008] The technical solution adopted by the present invention to solve its technical problem is: a portable soil sampling device described in the present invention comprises a bottom plate, the upper surface of the bottom plate is symmetrically fixedly connected with a support frame, a movable plate is slidably connected between the two support frames, an extension rod is rotatably connected inside the movable plate, one end of the extension rod is snap-connected with a first cone head, the outer wall of the first cone head is provided with a plurality of sampling holes, the interior of each sampling hole is slidably connected with a second cone head, and the second cone head is rotatably connected to the inner wall of the sampling hole, the outer wall of the second cone head is provided with an opening, the inner wall of the opening is fixedly connected with a plurality of teeth, one end of the second cone head is fixedly connected with a rotating rod, the surface of the rotating rod is provided with a sliding groove, the interior of the sliding groove is slidably connected with a limit rod, one end of the limit rod is fixedly connected with a sleeve, one end of the sleeve is fixedly connected with a connecting plate, the connecting plate is fixedly connected to the inner wall of the first cone head, the sliding groove comprises a first straight segment, one end of the first straight segment is provided with a spiral segment, one end of the spiral segment is provided with a second straight segment, and the first straight segment, the spiral segment and the second straight segment are communicated.

[0009] Preferably, both sides of the bottom plate are symmetrically rotatably connected with a plurality of moving wheels, and the inner wall of the bottom plate is threadedly connected with a plurality of positioning rods.

[0010] Preferably, a lifting motor is fixedly connected to the upper surface of the support frame, and a screw rod is rotatably connected to the interior of the support frame. The output end of the lifting motor is fixedly connected to one end of one of the screw rods, and one end of the other screw rod and the other output end of the lifting motor are fixedly connected to pulleys. The two pulleys are connected by belt drive, and the outer wall of the screw rod is connected to the internal thread of the movable plate.

[0011] Preferably, a rotating motor is fixedly connected to the lower surface of the movable plate, a first gear is fixedly connected to the output end of the rotating motor, a second gear is meshedly connected to one side of the first gear, and the second gear is fixedly connected to one end of the extension rod.

[0012] Preferably, the upper surface of the movable plate is fixedly connected to a fixed frame, the upper surface of the fixed frame is fixed to an electric cylinder, the telescopic end of the electric cylinder is fixedly connected to a rotating plate, the lower surface of the rotating plate is rotatably connected to a moving rod, and the moving rod and the inner wall of the extension rod are slidably connected.

[0013] Preferably, the inner wall of the moving rod is symmetrically provided with a first fixing hole, a first extrusion rod is slidably connected to the inside of the first fixing hole, a first fixing spring is fixedly connected between the first extrusion rod and the first fixing hole, a first insertion rod is provided at one end of the first extrusion rod, one end of the first insertion rod is slidably connected to a connecting rod, the connecting rod is slidably connected to the inside of a connecting plate, a first extrusion spring is fixedly connected between the two first insertion rods, one end of the connecting rod is rotatably connected to a connecting rod, the other end of the connecting rod is rotatably connected to a fixing plate, and the fixing plate is rotatably connected to one end of the rotating rod.

[0014] Preferably, the upper surface of the connecting plate is symmetrically and slidably connected with a second plug rod, a second extrusion spring is fixedly connected between the second plug rod and the upper surface of the connecting plate, a second fixing hole is opened on the inner wall of the extension rod, and the second fixing hole is located on one side of the second plug rod, a second extrusion rod is slidably connected to the inner wall of the second fixing hole, and a second fixing spring is fixedly connected between the second extrusion rod and the second fixing hole.

[0015] Preferably, the inner wall of the opening is slidably connected to a push plate, the upper surface of the push plate is provided with a plurality of tooth grooves, the tooth grooves and teeth are meshed with each other, the inside of the push plate is slidably connected to a sealing plate, a sealing spring is fixedly connected between the sealing plate and the inner wall of the push plate, one end of the sealing plate is provided with a mating edge, one side of the mating edge is provided with a beveled edge, and the beveled edge is provided on the inner wall of the opening.

[0016] Preferably, a slide rod is fixedly connected to the lower surface of the push plate, a buffer spring is fixedly connected between the lower surface of the push plate and the inner lower surface of the opening, and bumps are symmetrically fixedly connected to the lower surface of the connecting plate.

[0017] Preferably, a plurality of protrusions are fixedly connected to the lower surface of the protrusion, a pawl is rotatably connected inside the sliding rod, and a torsion spring is fixedly connected between the two ends of the pawl and the inside of one end of the sliding rod.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. A portable soil sampling device described in the present invention is provided with a second cone head, a slide groove and a limit rod. When it is necessary to sample the soil, the second cone head can be driven to slide out from the outer wall of the first cone head, and the second cone head drives the slide groove on the surface of the rotating rod to slide inside the sleeve, so that the second cone head can rotate when sliding outward, and the second cone head drives the opening to rotate. The opening can crush the block soil through the teeth, and the sampling position can be changed by rotation, so as to avoid the block soil at the opening causing the opening to be blocked. When the opening is rotated to face upward, the soil falls into the opening for collection. After the collection is completed, the second cone head is reset to the initial position. At this time, the opening of the second cone head faces downward, and the soil inside the opening falls into the first cone head by gravity. The second cone head can dredge the sampling hole, so as to avoid the problem of block soil blocking the sampling hole. At the same time, the second cone head can also collect the soil, so that the soil can be collected inside the first cone head, thereby increasing the sampling efficiency.

[0020] 2. The portable soil sampling device described in the present invention is provided with a push plate. When the collected soil is sticky, after the soil enters the inside of the opening, it is difficult for the soil to be discharged from the opening by gravity. When the second cone head rotates to the point where the opening faces downward, the second cone head drives the sliding rod to slide toward the inner wall of the first cone head, the sliding rod contacts the protrusion, and the protrusion squeezes the sliding rod, causing the sliding rod to slide downward, and the sliding rod drives the pushing plate to slide downward, and the pushing plate pushes the soil inside the opening, so that the soil inside the opening slides out of the opening and is stored inside the first cone head. The soil inside the opening can be automatically cleaned to avoid the difficulty of discharging the soil and blocking the opening, making it difficult to collect the required detection amount of soil at the same position subsequently through the second cone head, thereby affecting the detection result. At the same time, when the tooth grooves and teeth of the push plate are meshed, the sealing plate moves and fits one side of the opening. At this time, the sampling hole can be blocked by the second cone head to prevent subsequent soil from entering the inside of the first cone head, thereby affecting the accuracy of the detection.

[0021] 3. The portable soil sampling device described in the present invention is provided with a protrusion and a pawl. When the sliding rod slides toward the inner wall of the first cone head along with the second cone head, the sliding rod drives the pawl to move, and the pawl moves to the protrusion, so that the sliding rod is squeezed and moves downward, and then the pawl slides off the protrusion, and the sliding rod is reset by the buffer spring. Then this process is repeated, which can drive the push plate to vibrate up and down reciprocatingly, so that the soil adhered to the lower surface of the push plate can be quickly shaken off, avoiding the problem of adhesion to the surface of the push plate; when the second cone head slides toward the outer wall of the first cone head, the pawl rotates to squeeze the torsion spring and pass through the protrusion, avoiding the soil adhering to the lower surface of the push plate, thereby causing blockage and inaccurate sampling caused by soil residue.

[0022] 4. The portable soil sampling device described in the present invention is provided with moving wheels, which makes it convenient for workers to push the device to collect soil, thereby increasing portability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a structural schematic diagram of the movable plate of the present invention;

[0026] Figure 3 It is a schematic diagram of the internal structure of the movable plate of the present invention;

[0027] Figure 4 The present invention Figure 3 A partial enlarged view of middle A;

[0028] Figure 5 is a cross-sectional view of the internal structure of the moving rod and the connecting rod of the present invention;

[0029] Figure 6 is a schematic structural diagram of the first cone head of the present invention;

[0030] Figure 7 is a structural cross-sectional view of the first cone head of the present invention;

[0031] Figure 8 is a schematic structural diagram of the second cone head of the present invention;

[0032] Fig. 9 is a structural cross-sectional view of the second cone head of the present invention;

[0033] Fig.10 It is a schematic structural diagram of the sleeve and the rotating rod of the present invention;

[0034] Fig.11 Schematic diagram of the structure of the first straight line segment and the second straight line segment of the chute of the present invention;

[0035] Fig.12 It is a structural schematic diagram of the push plate of the present invention;

[0036] Fig.13 It is a structural cross-sectional view of the push plate of the present invention;

[0037] Fig.14 It is a schematic diagram of the structure of the bump of the present invention;

[0038] In the figure: 1, bottom plate; 11, moving wheel; 12, positioning rod; 13, support frame; 14, screw rod; 15, lifting motor; 16, pulley; 2, moving plate; 21, fixed frame; 22, rotating motor; 23, first gear; 24, electric cylinder; 25, rotating plate; 3, extension rod; 31, second gear; 32, moving rod; 33, first extrusion rod; 34, first fixing spring; 35, first fixing hole; 36, second fixing hole; 37, second extrusion rod; 38, second fixing spring; 4, first cone head; 41, connecting rod; 42, first plug rod; 43, first Extrusion spring; 44, second plug rod; 45, second extrusion spring; 46, bump; 461, protrusion; 47, sleeve; 471, limit rod; 48, connecting plate; 5, second cone head; 51, rotating rod; 52, fixing plate; 53, connecting rod; 54, slide groove; 541, first straight segment; 542, spiral segment; 543, second straight segment; 55, tooth; 56, opening; 57, bevel; 6, push plate; 61, tooth groove; 62, sealing plate; 621, fitting edge; 63, sealing spring; 64, slide rod; 65, buffer spring; 66, torsion spring; 67, ratchet. DETAILED DESCRIPTION

[0039] 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.

[0040] Embodiment 1: Figure 1 , Figures 6 to 11 As shown, a portable soil sampling device according to an embodiment of the present invention comprises a bottom plate 1, a support frame 13 is symmetrically fixedly connected to the upper surface of the bottom plate 1, a movable plate 2 is slidably connected between two of the support frames 13, an extension rod 3 is rotatably connected inside the movable plate 2, a first cone head 4 is snap-connected to one end of the extension rod 3, a plurality of sampling holes are formed on the outer wall of the first cone head 4, a second cone head 5 is slidably connected to the inside of each of the sampling holes, and the second cone head 5 is rotatably connected to the inner wall of the sampling hole, an opening 56 is formed on the outer wall of the second cone head 5, and a plurality of teeth 55 are fixedly connected to the inner wall of the opening 56, One end of the second cone head 5 is fixedly connected to a rotating rod 51, and a sliding groove 54 is provided on the surface of the rotating rod 51. The internal sliding connection of the sliding groove 54 is connected to a limiting rod 471, and one end of the limiting rod 471 is fixedly connected to a sleeve 47, and one end of the sleeve 47 is fixedly connected to a connecting plate 48. The connecting plate 48 is fixedly connected to the inner wall of the first cone head 4, and the sliding groove 54 includes a first straight segment 541, and one end of the first straight segment 541 is provided with a spiral segment 542, and one end of the spiral segment 542 is provided with a second straight segment 543, and the first straight segment 541, the spiral segment 542 and the second straight segment 543 are connected.

[0041] like Figure 1 As shown, a plurality of moving wheels 11 are symmetrically rotatably connected to both sides of the bottom plate 1 , and a plurality of positioning rods 12 are threadedly connected to the inner wall of the bottom plate 1 .

[0042] like Figure 1 As shown, a lifting motor 15 is fixedly connected to the upper surface of the support frame 13, and a screw rod 14 is rotatably connected inside the support frame 13. The output end of the lifting motor 15 is fixedly connected to one end of one of the screw rods 14, and one end of the other screw rod 14 and the other output end of the lifting motor 15 are fixedly connected to a pulley 16. The two pulleys 16 are connected by belt transmission, and the outer wall of the screw rod 14 is connected to the internal thread of the movable plate 2.

[0043] like Figure 2 As shown, a rotating motor 22 is fixedly connected to the lower surface of the movable plate 2, and a first gear 23 is fixedly connected to the output end of the rotating motor 22. A second gear 31 is meshedly connected to one side of the first gear 23, and the second gear 31 is fixedly connected to one end of the extension rod 3.

[0044] like Figure 3 As shown, the upper surface of the movable plate 2 is fixedly connected to a fixed frame 21, the upper surface of the fixed frame 21 is fixed to an electric cylinder 24, the telescopic end of the electric cylinder 24 is fixedly connected to a rotating plate 25, the lower surface of the rotating plate 25 is rotatably connected to a moving rod 32, and the moving rod 32 is slidably connected to the inner wall of the extension rod 3.

[0045] like Figures 5 to 7 As shown, the inner wall of the movable rod 32 is symmetrically provided with a first fixing hole 35, the inside of the first fixing hole 35 is slidably connected with a first extrusion rod 33, a first fixing spring 34 is fixedly connected between the first extrusion rod 33 and the first fixing hole 35, a first insertion rod 42 is provided at one end of the first extrusion rod 33, one end of the first insertion rod 42 is slidably connected with a connecting rod 41, the connecting rod 41 is slidably connected inside a connecting plate 48, a first extrusion spring 43 is fixedly connected between the two first insertion rods 42, one end of the connecting rod 41 is rotatably connected with a connecting rod 53, the other end of the connecting rod 53 is rotatably connected with a fixing plate 52, and the fixing plate 52 is rotatably connected to one end of a rotating rod 51.

[0046] like Figure 3 to Figure 4As shown, the upper surface of the connecting plate 48 is symmetrically and slidingly connected with the second plug rod 44, and a second extrusion spring 45 is fixedly connected between the second plug rod 44 and the upper surface of the connecting plate 48. The inner wall of the extension rod 3 is provided with a second fixing hole 36, and the second fixing hole 36 is located on one side of the second plug rod 44. The inner wall of the second fixing hole 36 is slidably connected with a second extrusion rod 37, and a second fixing spring 38 is fixedly connected between the second extrusion rod 37 and the second fixing hole 36.

[0047] Specifically, the existing soil collection device moves the sampling device through the soil downward, and when the sampling device reaches the soil sampling position, the through hole on the surface of the sampling device is opened, so that the soil enters the interior of the sampling device through the through hole, and then the soil sampling operation is completed;

[0048] When the above-mentioned prior art is used, when the deep soil is agglomerated, the agglomerated soil is stuck inside the sampling hole and blocks the sampling hole, which reduces the efficiency of subsequent soil entering the interior of the sampling tube, resulting in the need to sample the soil again, thereby increasing the time for soil sampling and reducing the efficiency of soil sampling;

[0049] In this embodiment, the second cone head 5 is normally received inside the first cone head 4, and the opening 56 inside the second cone head 5 is facing downwards at this time;

[0050] In order to solve the above problems, the working principle of the first embodiment is as follows: by pushing the moving plate 2 to drive the moving wheels 11 on both sides of the bottom plate 1 to roll, the moving wheels 11 drive the first cone head 4 to move to a suitable position, and then by rotating the positioning rod 12, the positioning rod 12 enters the deep soil and fixes the bottom plate 1, and then drives the lifting motor 15 to work, the lifting motor 15 drives one of the screw rods 14 to rotate, and the other screw rod 14 drives the pulley 16 at its output end to rotate through the lifting motor 15, and the pulley 16 drives the other pulley 16 to rotate synchronously under the action of the belt, so that the other screw rod 14 rotates synchronously, and the screw rod 14 rotates. The movable plate 2 on its surface is driven to move downward, and the movable plate 2 drives the extension rod 3 and the first cone head 4 to move downward. At the same time, the rotating motor 22 is turned on to work, and the rotating motor 22 drives the first gear 23 to rotate. The first gear 23 is meshed with the second gear 31, so that the extension rod 3 drives the first cone head 4 to rotate. At the same time, the extension rod 3 drives the movable rod 32 to rotate. The movable rod 32 rotates under the rotating plate 25. The first cone head 4 moves downward while rotating into the deep soil. When it reaches the appropriate position, the lifting motor 15 and the rotating motor 22 are turned off, and the electric cylinder 24 is driven to work. The electric cylinder 24 drives the rotating plate 25 to move downward, and the rotating plate 2 5 drives the moving rod 32 to slide downward, and the moving rod 32 drives the connecting rod 53 to move synchronously, so that the connecting rod 53 pushes the fixing plate 52 and the rotating rod 51 to slide, and the rotating rod 51 slides inside the sleeve 47 and drives the second cone head 5 to slide out toward the outer wall of the first cone head 4. At this time, the second straight line segment 543 of the limiting rod 471 in the sliding groove 54 slides, so that the second cone head 5 penetrates into the sampled soil. At this time, the opening 56 is located on the outer wall of the first cone head 4, and then the spiral segment 542 of the limiting rod 471 in the sliding groove 54 rotates, so that the rotating rod 51 is rotated by being squeezed by the limiting rod 471, and the rotating rod 51 drives the second cone head 5 to rotate, and the rotation of the second cone head 5 drives The movable opening 56 rotates, and the opening 56 drives the teeth 55 to rotate. The teeth 55 can crush the block soil near the opening 56. At the same time, the rotation of the opening 56 can also change the position of collecting soil. Then the limit rod 471 slides at the sliding position of the first straight section 541, so that the opening 56 faces upward, and the soil enters the inside of the opening 56 for collection. After the collection is completed, the driving moving rod 32 is reset, so that the second cone head 5 is reset and the opening 56 faces downward, and the soil inside the opening 56 falls into the inside of the first cone head 4 by gravity. Repeat the above operation until a suitable amount of soil is collected. After the collection is completed, the driving moving plate 2 is reset;

[0051] After the movable plate 2 is reset, the second squeezing rod 37 can be pressed, and the second squeezing rod 37 squeezes the second fixing spring 38, so that the second squeezing rod 37 slides in the second fixing hole 36, and the second squeezing rod 37 pushes the second plug rod 44 to slide above the connecting plate 48 and squeezes the first squeezing spring 43, so that the second plug rod 44 slides out of the second fixing hole 36. At this time, the limit between the first cone head 4 and the extension rod 3 can be released, and the second plug rod 44 moves and squeezes the first squeezing rod 33 to slide toward the inner wall of the second fixing hole 36 and squeezes the first fixing spring 34, and the first squeezing rod 33 pushes the first plug rod 42 to slide out of the first fixing hole 35. At this time, the limit between the movable rod 32 and the connecting rod 41 can be released, and then the soil collected inside the first cone head 4 can be poured out. During the subsequent installation, a positioning inclined groove is provided under the extension rod 3, and the second plug rod 44 corresponds to the position of the positioning inclined groove to position the second plug rod 44 and the first plug rod 42 to complete the installation, and perform the subsequent soil sampling operation again;

[0052] In this embodiment, the sampling hole can be cleaned by rotating and sliding the second cone head 5 to avoid the problem of clogging of the sampling hole. At the same time, the second cone head 5 can collect the soil in its opening 56. After the second cone head 5 is reset, the direction of the opening 56 changes, and the soil therein can be quickly dropped by gravity to speed up the efficiency of soil sampling. At the same time, the second cone head 5 samples soil with the opening 56 facing upward, which is more convenient for the soil to fall into the interior of the opening 56 than with the opening 56 facing downward, thereby avoiding the problem that fluid or gravel-like soil cannot be collected.

[0053] Embodiment 2: Figure 12 to Figure 13 As shown, compared with Example 1, another embodiment of the present invention is: the inner wall of the opening 56 is slidably connected with a push plate 6, the upper surface of the push plate 6 is provided with a plurality of tooth grooves 61, the tooth grooves 61 and the teeth 55 are meshed with each other, the inside of the push plate 6 is slidably connected with a sealing plate 62, a sealing spring 63 is fixedly connected between the sealing plate 62 and the inner wall of the push plate 6, one end of the sealing plate 62 is provided with a fitting edge 621, one side of the fitting edge 621 is provided with a bevel 57, and the bevel 57 is provided on the inner wall of the opening 56.

[0054] like Figure 7 and Fig. 9 As shown, a slide rod 64 is fixedly connected to the lower surface of the push plate 6, a buffer spring 65 is fixedly connected between the lower surface of the push plate 6 and the inner lower surface of the opening 56, and a protrusion 46 is symmetrically fixedly connected to the lower surface of the connecting plate 48.

[0055] like Fig.13 and Fig.14As shown, a plurality of protrusions 461 are fixedly connected to the lower surface of the protrusion 46 , a pawl 67 is rotatably connected inside the slide bar 64 , and a torsion spring 66 is fixedly connected between the two ends of the pawl 67 and the inside of one end of the slide bar 64 .

[0056] Specifically, in order to facilitate the entry of soil, the second cone head 5 in the present invention is provided with a bevel 57 on one side of the opening 56 to accelerate the sliding of the soil. In the above arrangement, a gap is formed between the opening 56 and the bevel 57. If it is not sealed, when the first cone head 4 moves, soil of different depths may enter the interior of the opening 56 through this gap, thereby affecting the accuracy of soil detection. When the collection is completed, when the soil collected inside the opening 56 is sticky and the adhesion of the soil is greater than the gravity, the soil will stay inside the opening 56 and cannot be discharged downward, causing the opening 56 to be blocked, making it difficult for the soil at the same position to be collected by the second cone head 5 to obtain the required detection amount, thereby affecting the detection result.

[0057] In order to solve the above-mentioned problem, the working principle of the second embodiment is as follows: when the second cone head 5 is reset and slides toward the inner wall of the first cone head 4, the limiting rod 471 slides at the first straight section 541, so that the second cone head 5 slides toward the inside of the first cone head 4, and then the limiting rod 471 slides in the spiral section 542, so that the second cone head 5 rotates, and the second cone head 5 drives the sliding rod 64 to rotate synchronously by ninety degrees, so that the opening 56 faces downward and the second cone head 5 part still stays on the outer wall of the first cone head 4. At this time, the second cone head 5 continues to slide toward the inner wall of the first cone head 4, and the limiting rod 471 is at the second straight section 543 and slides inside it. The sliding rod 64 contacts the protrusion 46 and slides on the lower surface of the protrusion 46. At this time, the sliding rod 64 is squeezed by the protrusion 46, so that the sliding rod 64 slides downward, and the sliding rod 64 drives the push plate 6 to move downward, and the push plate 6 drives the close The sealing plate 62 moves downward synchronously, and the push plate 6 and the sealing plate 62 push the soil inside the opening 56 downward. The sliding rod 64 drives the pawl 67 to slide at the same time. The pawl 67 slides on the protrusion 461 under the protrusion 46 and squeezes the sliding rod 64 to slide downward again. When the pawl 67 falls off the protrusion 461, the buffer spring 65 drives the push plate 6 and the sealing plate 62 to reset, so that the push plate 6 and the sealing plate 62 can vibrate reciprocatingly up and down, and then the soil attached to the push plate 6 and the sealing plate 62 can be shaken off. When the limiting rod 471 moves to the final position of the second straight line segment 543, the sealing plate 62 is reset by the sealing spring 63, so that the sealing plate 62 slides inside the push plate 6 and drives the fitting edge 621 and the bevel edge 57 to fit together, so as to realize the sealing operation of the second cone head 5. At the same time, the second cone head 5 is received in the sampling hole and the sampling hole is sealed.

[0058] The second embodiment of the present invention can automatically clean the soil inside the opening 56, thereby preventing the soil from adhering to the lower surface of the push plate 6, thereby causing blockage and inaccurate sampling caused by soil residue. At the same time, the opening 56 and the sampling hole can be sealed to prevent the remaining soil from mixing in and causing inaccurate detection results.

[0059] Working principle: Push the moving plate 2 to drive the moving wheels 11 on both sides of the bottom plate 1 to roll. After the moving wheels 11 drive the first cone head 4 to move to a suitable position, the positioning rod 12 is rotated so that the positioning rod 12 enters deep into the soil and fixes the bottom plate 1. Then the lifting motor 15 is driven to work. The lifting motor 15 drives one of the screw rods 14 to rotate. The other screw rod 14 drives the pulley 16 at its output end to rotate through the lifting motor 15. The pulley 16 drives another pulley 16 to rotate synchronously under the action of the belt, so that the other screw rod 14 rotates synchronously. The rotation of the screw rod 14 can drive the moving plate 2 on its surface to move downward. The moving plate 2 drives the extension rod 3 and the first cone head 4 to move downward, and at the same time, the rotating motor 22 is turned on to work, and the rotating motor 22 drives the first gear 23 to rotate, and the first gear 23 and the second gear 31 are meshed, so that the extension rod 3 drives the first cone head 4 to rotate, and at the same time, the extension rod 3 drives the moving rod 32 to rotate, and the moving rod 32 rotates under the rotating plate 25, and the first cone head 4 moves downward while rotating into the deep soil. When it reaches the appropriate position, the lifting motor 15 and the rotating motor 22 are turned off, and the electric cylinder 24 is driven to work, and the electric cylinder 24 drives the rotating plate 25 to move downward, and the rotating plate 25 drives the moving rod 32 downward The movable rod 32 drives the connecting rod 53 to move synchronously, so that the connecting rod 53 pushes the fixing plate 52 and the rotating rod 51 to slide, and the rotating rod 51 slides inside the sleeve 47 and drives the second cone head 5 to slide out toward the outer wall of the first cone head 4. At this time, the second straight line segment 543 of the limiting rod 471 in the slide groove 54 slides, so that the second cone head 5 penetrates into the sampled soil. At this time, the opening 56 is located on the outer wall of the first cone head 4, and then the spiral segment 542 of the limiting rod 471 in the slide groove 54 rotates, so that the rotating rod 51 is rotated by being squeezed by the limiting rod 471, and the rotating rod 51 drives the second cone head 5 to rotate, and the second cone head 5 rotates to drive the opening 56 The opening 56 rotates, and the teeth 55 can be driven to rotate. The teeth 55 can crush the block soil near the opening 56. At the same time, the rotation of the opening 56 can also change the position of collecting soil. Then the limit rod 471 slides at the sliding position of the first straight section 541, so that the opening 56 faces upward, and the soil enters the opening 56 for collection. After the collection is completed, the moving rod 32 is driven to reset, so that the second cone head 5 is reset and the opening 56 faces downward, and the soil inside the opening 56 falls into the first cone head 4 by gravity. Repeat the above operation until a suitable amount of soil is collected. After the collection is completed, the moving plate 2 is driven to reset;

[0060] After the movable plate 2 is reset, the second squeezing rod 37 can be pressed, and the second squeezing rod 37 squeezes the second fixing spring 38, so that the second squeezing rod 37 slides in the second fixing hole 36, and the second squeezing rod 37 pushes the second plug rod 44 to slide above the connecting plate 48 and squeezes the first squeezing spring 43, so that the second plug rod 44 slides out of the second fixing hole 36. At this time, the limit between the first cone head 4 and the extension rod 3 can be released, and the second plug rod 44 moves and squeezes the first squeezing rod 33 to slide toward the inner wall of the second fixing hole 36 and squeezes the first fixing spring 34, and the first squeezing rod 33 pushes the first plug rod 42 to slide out of the first fixing hole 35. At this time, the limit between the movable rod 32 and the connecting rod 41 can be released, and then the soil collected inside the first cone head 4 can be poured out. During the subsequent installation, a positioning inclined groove is provided under the extension rod 3, and the second plug rod 44 corresponds to the position of the positioning inclined groove to position the second plug rod 44 and the first plug rod 42 to complete the installation, and perform the subsequent soil sampling operation again;

[0061] When the second cone head 5 slides back to the inner wall of the first cone head 4, the limiting rod 471 slides at the first straight section 541, so that the second cone head 5 slides toward the inside of the first cone head 4, and then the limiting rod 471 slides in the spiral section 542, so that the second cone head 5 rotates, and the second cone head 5 drives the sliding rod 64 to rotate synchronously by ninety degrees, so that the opening 56 faces downward and the second cone head 5 part still stays on the outer wall of the first cone head 4. At this time, the second cone head 5 continues to slide toward the inner wall of the first cone head 4, and the limiting rod 471 is now at the second straight section 543 and slides inside it. The sliding rod 64 contacts the protrusion 46 and slides on the lower surface of the protrusion 46. At this time, the sliding rod 64 is squeezed by the protrusion 46, so that the sliding rod 64 slides downward, and the sliding rod 64 drives the push plate 6 to move downward, and the push plate 6 drives the sealing plate 62 to move downward synchronously. The push plate 6 and the sealing plate 62 push the soil inside the opening 56 downward, and the sliding rod 64 drives the pawl 67 to slide at the same time. The pawl 67 slides at the protrusion 461 under the protrusion 46 and squeezes the sliding rod 64 to slide downward again. When the pawl 67 falls off the protrusion 461, the buffer spring 65 drives the push plate 6 and the sealing plate 62 to reset, so that the push plate 6 and the sealing plate 62 can vibrate up and down, and then the soil attached to the bottom of the push plate 6 and the sealing plate 62 can be shaken off. When the limiting rod 471 moves to the final position of the second straight line segment 543, the sealing plate 62 is reset by the sealing spring 63, so that the sealing plate 62 slides inside the push plate 6 and drives the fitting edge 621 and the bevel edge 57 to fit together, so as to realize the sealing operation of the second cone head 5. At the same time, the second cone head 5 is received in the sampling hole and the sampling hole is sealed.

[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 portable soil sampling device, characterized in that: The invention comprises a bottom plate (1), the upper surface of the bottom plate (1) is symmetrically fixedly connected to a support frame (13), a movable plate (2) is slidably connected between two of the support frames (13), an extension rod (3) is rotatably connected inside the movable plate (2), one end of the extension rod (3) is snap-connected to a first cone head (4), a plurality of sampling holes are provided on the outer wall of the first cone head (4), a second cone head (5) is slidably connected inside each of the sampling holes, and the second cone head (5) is rotatably connected to the inner wall of the sampling hole, an opening (56) is provided on the outer wall of the second cone head (5), a plurality of teeth (55) are fixedly connected to the inner wall of the opening (56), and one end of the second cone head (5) is fixedly connected to A rotating rod (51), wherein a sliding groove (54) is provided on the surface of the rotating rod (51), wherein the interior of the sliding groove (54) is slidably connected to a limiting rod (471), wherein one end of the limiting rod (471) is fixedly connected to a sleeve (47), wherein one end of the sleeve (47) is fixedly connected to a connecting plate (48), wherein the connecting plate (48) is fixedly connected to the inner wall of the first cone head (4), wherein the sliding groove (54) comprises a first straight segment (541), wherein one end of the first straight segment (541) is provided with a spiral segment (542), wherein one end of the spiral segment (542) is provided with a second straight segment (543), wherein the first straight segment (541), the spiral segment (542) and the second straight segment (543) are connected to each other; The upper surface of the movable plate (2) is fixedly connected to a fixing frame (21), the upper surface of the fixing frame (21) is fixed to an electric cylinder (24), the telescopic end of the electric cylinder (24) is fixedly connected to a rotating plate (25), the lower surface of the rotating plate (25) is rotatably connected to a moving rod (32), and the moving rod (32) is slidably connected to the inner wall of the extension rod (3); The inner wall of the moving rod (32) is symmetrically provided with a first fixing hole (35), the interior of the first fixing hole (35) is slidably connected with a first extrusion rod (33), a first fixing spring (34) is fixedly connected between the first extrusion rod (33) and the first fixing hole (35), a first insertion rod (42) is provided at one end of the first extrusion rod (33), one end of the first insertion rod (42) is slidably connected with a connecting rod (41), the connecting rod (41) is slidably connected inside a connecting plate (48), a first extrusion spring (43) is fixedly connected between the two first insertion rods (42), one end of the connecting rod (41) is rotatably connected with a connecting rod (53), the other end of the connecting rod (53) is rotatably connected with a fixing plate (52), and the fixing plate (52) is rotatably connected to one end of the rotating rod (51).

2. A portable soil sampling device according to claim 1, characterized in that: A plurality of moving wheels (11) are symmetrically rotatably connected to both sides of the bottom plate (1), and a plurality of positioning rods (12) are threadedly connected to the inner wall of the bottom plate (1).

3. A portable soil sampling device according to claim 2, characterized in that: A lifting motor (15) is fixedly connected to the upper surface of the support frame (13), and a screw rod (14) is rotatably connected inside the support frame (13). The output end of the lifting motor (15) is fixedly connected to one end of one of the screw rods (14), and one end of the other screw rod (14) and the other output end of the lifting motor (15) are fixedly connected to a pulley (16). The two pulleys (16) are connected via a belt drive, and the outer wall of the screw rod (14) is threadedly connected to the inside of the movable plate (2).

4. A portable soil sampling device according to claim 3, characterized in that: A rotating motor (22) is fixedly connected to the lower surface of the movable plate (2); a first gear (23) is fixedly connected to the output end of the rotating motor (22); a second gear (31) is meshedly connected to one side of the first gear (23); and the second gear (31) is fixedly connected to one end of the extension rod (3).

5. A portable soil sampling device according to claim 1, characterized in that: The upper surface of the connecting plate (48) is symmetrically slidably connected to a second plug rod (44), a second extrusion spring (45) is fixedly connected between the second plug rod (44) and the upper surface of the connecting plate (48), a second fixing hole (36) is opened on the inner wall of the extension rod (3), and the second fixing hole (36) is located on one side of the second plug rod (44), a second extrusion rod (37) is slidably connected to the inner wall of the second fixing hole (36), and a second fixing spring (38) is fixedly connected between the second extrusion rod (37) and the second fixing hole (36).

6. A portable soil sampling device according to claim 5, characterized in that: The inner wall of the opening (56) is slidably connected to a push plate (6), and the upper surface of the push plate (6) is provided with a plurality of tooth grooves (61), and the tooth grooves (61) and the teeth (55) are meshed with each other. The interior of the push plate (6) is slidably connected to a sealing plate (62), and a sealing spring (63) is fixedly connected between the sealing plate (62) and the inner wall of the push plate (6). One end of the sealing plate (62) is provided with a fitting edge (621), and one side of the fitting edge (621) is provided with a bevel (57), and the bevel (57) is provided on the inner wall of the opening (56).

7. A portable soil sampling device according to claim 6, characterized in that: A slide rod (64) is fixedly connected to the lower surface of the push plate (6), a buffer spring (65) is fixedly connected between the lower surface of the push plate (6) and the inner lower surface of the opening (56), and a protrusion (46) is symmetrically fixedly connected to the lower surface of the connecting plate (48).

8. A portable soil sampling device according to claim 7, characterized in that: A plurality of protrusions (461) are fixedly connected to the lower surface of the protrusion (46), a pawl (67) is rotatably connected inside the slide bar (64), and a torsion spring (66) is fixedly connected between the two ends of the pawl (67) and the inside of one end of the slide bar (64).

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