A soil sampling device for environmental protection engineering

Abstract

The present invention relates to the field of soil detection technology, specifically a soil sampling device for environmental protection engineering, including a bracket assembly, a cleaning assembly and a sampling assembly, the bracket assembly includes four vertically arranged longitudinal bars, two adjacent sides of the longitudinal bars are respectively connected to two vertically arranged cross bars 1 and 2, cross bars 1, 2 and the longitudinal bars are connected to form a rectangular frame structure, a cleaning assembly is arranged inside the rectangular frame structure, a sampling assembly is arranged inside the cleaning assembly, and a shell is fixedly connected to the outer side of the rectangular frame structure. By setting the coordination of the pull rod and the wheel, it can adapt to a variety of complex roads, and it is convenient to reach the sampling point. At the same time, the wheels can bear weight and reduce the workload of the operator; by setting the cleaning assembly, the soil cleaning work can be automatically completed, which is efficient and fast; by setting the sampling assembly, the soil sampling and soil bulk density sampling can be automatically completed, without manual digging and then sampling, and the sampling efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of soil detection, in particular to a soil sampling device for environmental protection engineering. Background Art

[0002] With the improvement of the environment, sampling operations are usually required in the process of environmental testing and governance, and soil sampling and testing have become an important part of the environmental monitoring process. Soil testing sampling is divided into deep sampling and surface sampling. Surface sampling is the sampling of soil on the surface of the ground. The sampling involves a wide range and complex terrain. It is usually done by walking to the sampling point manually.

[0003] The manual sampling process is to first remove the debris from the soil surface, then dig a rectangular pit, and then use a shovel to dig the soil layer from top to bottom on the side of the rectangular pit for sampling. Then, bulk density samples are taken, that is, a hollow cylindrical container is inserted into the soil, and then pulled out to take out soil of a specific volume and shape.

[0004] Sampling needs to be carried out at multiple points in an area, and the same sampling point needs to be sampled four times. This requires a large number of samples, complicated operations, and difficulty in cleaning the soil surface, resulting in a large sampling workload and low sampling efficiency.

[0005] Therefore, a soil sampling device for environmental protection engineering is needed to solve the above technical problems. Summary of the invention

[0006] The purpose of the present invention is to solve the above problems and provide a soil sampling device for environmental protection engineering.

[0007] The present invention discloses a soil sampling device for environmental protection engineering, comprising a support assembly, a cleaning assembly and a sampling assembly, wherein the support assembly comprises four vertically arranged longitudinal bars, wherein the longitudinal bars are arranged in a hollow rectangular column shape, wherein two adjacent side surfaces of the longitudinal bars are respectively connected to two vertically arranged transverse bars 1 and 2, wherein the other ends of the transverse bars 1 and 2 are both connected to the longitudinal bars, wherein the transverse bars 1, 2 and the longitudinal bars are connected to form a rectangular frame structure, wherein the cleaning assembly is arranged inside the rectangular frame structure, wherein the sampling assembly is arranged inside the cleaning assembly, and wherein the outer side of the rectangular frame structure is fixedly connected to a housing;

[0008] Positioning rods are welded to the lower ends of the four longitudinal rods, and pull rods are welded to the upper ends of two adjacent longitudinal rods. The same side bolts of the two longitudinal rods at the lower ends of the pull rods are connected to the wheel frame, and the wheels are rotatably set on the wheel frame. Through the setting of the pull rods and the wheels, the operator can pull the pull rods to tilt the device and the wheels contact the ground to pull the device of the present invention to move the position, which can save physical strength; when working, the four positioning rods are in contact with the soil, and the wheels are off the ground to prevent the device from moving.

[0009] Furthermore, the cleaning assembly includes four parallel rollers, the outer sides of the rollers are sleeved with cutting belts, and multiple cutting knives parallel to the rollers are fixed on the outer sides of the cutting belts. The two ends of the rollers are rotatably arranged on the longitudinal rods through bearing seats, and the same ends of the four rollers are all passed through the longitudinal rods and are coaxially fixedly connected to the pulleys. A transmission belt is sleeved between two adjacent pulleys. Through the arrangement of the transmission belts and pulleys, the four rollers can rotate synchronously.

[0010] One end of one of the upper rollers, away from the pulley, passes through the longitudinal rod and is coaxially fixedly connected to the worm wheel. The outer side of the worm wheel is meshed with the worm. The worm is fixedly connected to the output shaft of the servo motor through a coupling. The servo motor is fixedly connected to the longitudinal rod. Through the reduction transmission of the worm wheel and the worm, the servo motor can drive the roller to rotate at a low speed. The roller drives the four rollers to rotate synchronously through the belt and the pulley, thereby improving the uniformity of power transmission. The cutting belt drives the four cutting knives to rotate evenly.

[0011] Furthermore, the cutting blade includes a connecting piece fixedly connected to the outside of the cutting belt, and a plurality of parallel wedge blocks are evenly distributed on the side of the connecting piece away from the cutting belt, and a blade is fixedly arranged on the outside of the wedge block. The blade can be fixedly connected to the outside of the cutting belt through the connecting piece, and the blade can be set to an inclined state through the setting of the wedge block, so that the blade can scrape the soil and clean the weeds on the soil surface.

[0012] Four cutting knives are provided, and a plurality of through holes are provided at intervals at one end of the cutting belt. The four cutting knives can quickly and effectively clean the soil surface; the through holes are provided to facilitate the sampling assembly to pass through the through holes to sample the soil.

[0013] Furthermore, the sampling assembly includes a bottom plate bolted between two cross bars 1 at the bottom end, a guide groove is arranged on the lower side of one end of the bottom plate, a receiving clip 1 and a receiving clip 2 are arranged parallel and adjacent to each other on the upper side of the bottom plate, a storage box fixedly connected to the two cross bars 1 at the upper end is arranged on the upper side of the receiving clip 1 and the receiving clip 2, one end of the receiving clip 1 and the receiving clip 2 are bolted to a baffle, two springs are fixedly arranged on one side of the baffle close to the inside of the receiving clip 1 and the receiving clip 2, the two springs extend into the receiving clip 1 and the receiving clip 2 respectively, the storage box is used to store reserve sampling blocks, and can accommodate multiple sampling blocks to increase the number of sampling times, the baffle is used to block and limit the sampling blocks in the receiving clip 1 and the receiving clip 2 to prevent the sampling blocks from escaping from the receiving clip 1 and the receiving clip 2, and the spring is used to squeeze the sampling blocks in the receiving clip 1 and the receiving clip 2 to stabilize the position of the sampling blocks and prevent shaking;

[0014] A guide plate fixedly connected to the bottom plate is arranged outside one end of the receiving clip 1 and the receiving clip 2 away from the baffle, the guide plate is arranged at intervals from the receiving clip 1 and the receiving clip 2, a sampling block is slidably arranged between the guide plate and the receiving clip 1 and the receiving clip 2, and the distance between the guide plate and the receiving clip 1 and the receiving clip 2 is the same as the width of the sampling block. The guide plate is used to guide the sampling block so that the sampling block can be smoothly moved from the end of the receiving clip 1 to the end of the receiving clip 2.

[0015] Furthermore, a longitudinal push module is arranged at the upper end of the sampling block accommodating one end of the clamp, the upper bolt of the moving end of the longitudinal push module is connected to the connecting block, the lower end of the connecting block is threadedly connected to the push rod, the lower end of the push rod is threadedly connected to the slider, the slider is a quadrangular pyramid, and the slider is slidably connected in the sampling block. Through the arrangement of the slider, the slider and the sampling block can slide, which is convenient for the sampling block to move its position, and the longitudinal push module drives the sampling block to move downward through the push rod to complete the sampling.

[0016] Furthermore, a connected chute 1 and chute 2 are arranged at the upper end of the sampling block, and the chute 1 and chute 2 are arranged perpendicular to each other. Both the chute 1 and the chute 2 are dovetail grooves, and the cross-sectional dimensions of the chute 1 and the chute 2 are the same; the chute 1 and the chute 2 are used for sliding connection with the slider, and when the slider slides into the chute 1, the sampling block and the slider are relatively fixed in the vertical direction. When the sampling block is driven by the longitudinal pushing module to move downward for sampling, the sampling block is restricted by the guide groove, so that the sampling block will not move horizontally, and thus the sampling block will not be disconnected from the slider.

[0017] Furthermore, adjacent inclined planes 1 and 2 are arranged on one side of the sampling block, the inclined planes 1 and 2 are arranged vertically, and the horizontal width of the inclined plane 1 is greater than the horizontal width of the inclined plane 2.

[0018] Inclined surface 3 and inclined surface 4 are arranged on the other side of the sampling block, and inclined surface 1 and inclined surface 2 are arranged axially symmetrically with inclined surface 3 and inclined surface 4. When the two sampling blocks are close to each other, since the sizes of inclined surface 1 and inclined surface 3 are relatively large, inclined surface 1 and inclined surface 3 will contact each other first, and inclined surface 1 and inclined surface 3 will squeeze each other, so as to facilitate the overlap of the two sampling blocks.

[0019] Furthermore, a sampling cavity is arranged at the bottom of the sampling block, a bulk density sampling hole is arranged adjacent to the sampling cavity, the bulk density sampling hole is a through hole, a limiting plate is arranged in the middle of the rectangular sampling hole, a sample pushing rod is slidably arranged in the limiting plate, a disc 1 is arranged at the lower end of the sample pushing rod, a disc 2 is arranged at the upper end of the sample pushing rod, and the diameters of disc 1 and disc 2 are the same as the inner diameter of the bulk density sampling hole.

[0020] During operation, the sampling block moves downward and is inserted into the soil. The soil enters the sampling cavity to realize soil sampling. At the same time, the soil enters the bulk density sampling hole. The soil pushes the disc to move upward until the disc abuts against the limit plate. At this time, the sampling block completes sampling and returns, and then the sample is removed by pushing the sample push rod.

[0021] Furthermore, the upper side bolts of the first and second receiving clamps are connected to the lateral push module, and the moving end bolts of the lateral push module are connected to the push piece, and the push piece moves laterally between the first and second receiving clamps and the guide plate, and the push piece abuts against the side wall of the sampling block at the end of the first receiving clamp away from the second receiving clamp. By setting the lateral push module, the lateral push module drives the sampling block to move along the guide plate toward the second receiving clamp through the push piece, and completes the movement of the sampling block from the first receiving clamp to the second receiving clamp.

[0022] The beneficial effects of the present invention are as follows: by arranging the cooperation between the pull rod and the wheels, it can adapt to a variety of complex roads and facilitate reaching the sampling point, and at the same time the wheels can bear weight, reducing the workload of the operator; by arranging the cleaning component, the soil cleaning work can be automatically completed, which is efficient and fast; by arranging the sampling component, soil sampling and soil bulk density sampling can be automatically completed, without the need for manual digging and then sampling, and the sampling efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the following detailed description of the preferred embodiment.The drawings are only for the purpose of illustrating the preferred embodiments and are not to be construed as limiting the invention.

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

[0025] Figure 2 It is a schematic diagram of the overall internal structure of the present invention;

[0026] Figure 3 It is a schematic diagram of the structure of the whole interior of the present invention from another perspective;

[0027] Figure 4 For the present invention Figure 3 Schematic diagram of the structure at C in the middle;

[0028] Figure 5 This is a schematic diagram of the cutting belt structure of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of the cutting knife of the present invention;

[0030] Figure 7 This is a schematic diagram of the structure of the sampling assembly of the present invention;

[0031] Figure 8 It is a schematic diagram of the local structure of the sampling assembly of the present invention;

[0032] Fig. 9 For the present invention Figure 8 Schematic diagram of the structure at D in the middle;

[0033] Fig.10This is a schematic diagram of the bottom view of the sampling assembly of the present invention;

[0034] Fig.11 This is a schematic diagram of the longitudinal push module structure of the present invention;

[0035] Fig.12 This is a schematic diagram of the sampling block structure of the present invention;

[0036] Fig.13 This is a schematic diagram of the structure of the sampling block of the present invention when viewed from above;

[0037] Fig.14 This is a schematic diagram of the cross-sectional structure of the sampling block of the present invention.

[0038] Reference numerals:

[0039] 1 bracket assembly, 11 housing, 12 pull rod, 13 positioning rod, 14 wheel frame, 141 wheel, 15 longitudinal rod, 16 cross bar 1, 17 cross bar 2;

[0040] 2 cleaning component, 21 roller, 211 bearing seat, 22 pulley, 23 driving belt, 24 cutting belt, 241 through hole, 25 cutting knife, 251 connecting piece, 252 wedge block, 253 blade, 26 servo motor, 27 worm, 28 worm wheel;

[0041] 3 sampling assembly, 31 storage box, 32 receiving clip 1, 321 baffle, 322 spring, 33 receiving clip 2, 34 transverse push module, 341 push sheet, 35 longitudinal push module, 351 push rod, 352 slider, 353 connecting block,

[0042] 36 sampling block, 361 slide 1, 362 slide 2, 363 bulk density sampling hole, 3631 limit plate, 364 inclined plane 1, 365 inclined plane 2, 3641 inclined plane 3, 3651 inclined plane 4, 366 sampling cavity, 367 sample ejection rod, 3671 disc 1, 3672 disc 2, 37 bottom plate, 371 guide groove, 38 guide plate. DETAILED DESCRIPTION

[0043] The present invention will be described in detail below in conjunction with the accompanying drawings. Figure 1-Figure 14As shown, a soil sampling device for environmental protection engineering includes a bracket assembly 1, a cleaning assembly 2 and a sampling assembly 3. The bracket assembly 1 includes four vertically arranged longitudinal rods 15. The longitudinal rods 15 are arranged in a hollow rectangular column shape. Two adjacent side surfaces of the longitudinal rods 15 are respectively connected to two vertically arranged crossbars 16 and 17. The other ends of the crossbars 16 and 17 are connected to the longitudinal rods 15. The crossbars 16, 17 and the longitudinal rods 15 are connected to form a rectangular frame structure. The cleaning assembly 2 is arranged inside the rectangular frame structure. The sampling assembly 3 is arranged inside the cleaning assembly 2. The outer side of the rectangular frame structure is fixedly connected to a shell 11. The shell 11 is used to protect the internal device and isolate the internal device to prevent the internal device from injuring the operator.

[0044] A positioning rod 13 is welded to the lower end of each of the four longitudinal rods 15. The positioning rod 13 is used to vertically position the device of the present invention on the soil to prevent the device from moving when the cleaning component 2 is working. A pull rod 12 is welded to the upper end of two adjacent longitudinal rods 15. The two longitudinal rods 15 at the lower end of the pull rod 12 are connected to a wheel frame 14 with the same side bolts. A wheel 141 is rotatably arranged on the wheel frame 14. Through the arrangement of the pull rod 12 and the wheel 141, the operator can pull the pull rod 12 to tilt the device, and the wheel 141 contacts the ground to pull the device of the present invention to move, which can save physical effort. During operation, the four positioning rods 13 contact the soil, and the wheel 141 is separated from the ground to prevent the device from moving.

[0045] For further information, see Figure 2-Figure 6 The cleaning component 2 includes four parallel rollers 21, the outer side of the rollers 21 is sleeved with a cutting belt 24, and a plurality of cutting knives 25 parallel to the rollers 21 are fixed on the outer side of the cutting belt 24. The rollers 21 rotate, driving the cutting belt 24 to rotate on the outer side of the rollers 21, and the cutting belt 24 drives the cutting knives 25 to rotate. When the cutting knives 25 rotate to the lower end, the cutting knives 25 contact the soil and clean the soil surface; the two ends of the rollers 21 are rotatably set on the longitudinal rod 15 through the bearing seat 211, and the same ends of the four rollers 21 all penetrate the longitudinal rod 15 and are coaxially fixedly connected with the pulley 22. A transmission belt 23 is sleeved between two adjacent pulleys 22. Through the setting of the transmission belt 23 and the pulley 22, the four rollers 21 can rotate synchronously;

[0046] One end of one of the upper rollers 21 away from the pulley 22 passes through the longitudinal rod 15 and is coaxially fixedly connected to the worm wheel 28. The outer side of the worm wheel 28 is meshed with the worm 27. The worm 27 is fixedly connected to the output shaft of the servo motor 26 through a coupling. The servo motor 26 is fixedly connected to the longitudinal rod 15. Through the reduction transmission of the worm wheel 28 and the worm 27, the servo motor 26 can drive the roller 21 to rotate at a low speed. The roller 21 drives the four rollers 21 to rotate synchronously through the belt 23 and the pulley 22, thereby improving the uniformity of the power transmission. The cutting belt 24 drives the four cutting knives 25 to rotate evenly.

[0047] For further information, see Figure 6 The cutting blade 25 includes a connecting piece 251 fixedly connected to the outside of the cutting belt 24. The connecting piece 251 is bolted or riveted to the outside of the cutting belt 24. A plurality of wedge blocks 252 are evenly distributed on the side of the connecting piece 251 away from the cutting belt 24. A blade 253 is fixedly arranged on the outside of the wedge blocks 252. The blade 253 can be fixedly connected to the outside of the cutting belt 24 through the connecting piece 251. The blade 253 can be set to an inclined state through the setting of the wedge blocks 252, so that the blade 253 can scrape the soil and clean the weeds on the soil surface.

[0048] Further, four cutting knives 25 are provided. The four cutting knives 25 can quickly and effectively clean the soil surface.

[0049] For further information, see Figure 5 A plurality of through holes 241 are arranged at intervals at one end of the cutting belt 24. The arrangement of the through holes 241 facilitates the sampling assembly 3 to pass through the through holes 241 to sample the soil.

[0050] For further information, see Figure 7-Figure 11 The sampling assembly 3 includes a bottom plate 37 bolted between two cross bars 16 at the bottom end, a guide groove 371 is arranged at the lower side of one end of the bottom plate 37, and the guide groove 371 is used to guide the sampling block 36, so that the sampling block 36 can move vertically into the soil to achieve soil sampling. A receiving clip 1 32 and a receiving clip 2 33 are arranged parallel and adjacent to each other on the upper side of the bottom plate 37, the receiving clip 1 32 is used to install and place the sampling block 36 before sampling, and the receiving clip 2 33 is used to install and place the sampling block 36 after sampling, and a storage box 31 fixedly connected to the two cross bars 16 at the upper end is arranged on the upper side of the receiving clip 1 32 and the receiving clip 2 33, and the storage box 31 is used to store the reserve sampling blocks 36 , can accommodate multiple sampling blocks 36, improve the sampling times, one end of the accommodating clip 1 32 and the accommodating clip 2 33 are bolted to the baffle 321, and two springs 322 are fixedly arranged on one side of the baffle 321 close to the inside of the accommodating clip 1 32 and the accommodating clip 2 33, and the two springs 322 extend into the accommodating clip 1 32 and the accommodating clip 2 33 respectively. The baffle 321 is used to block and limit the sampling blocks 36 in the accommodating clip 1 32 and the accommodating clip 2 33 to prevent the sampling blocks 36 from escaping from the accommodating clip 1 32 and the accommodating clip 2 33, and the spring 322 is used to squeeze the sampling blocks 36 in the accommodating clip 1 32 and the accommodating clip 2 33 to stabilize the position of the sampling blocks 36 and prevent shaking;

[0051] See also Fig. 9A guide plate 38 fixedly connected to the bottom plate 37 is arranged outside one end of the receiving clip 1 32 and the receiving clip 2 33 away from the baffle 321. The guide plate 38 is arranged at intervals from the receiving clip 1 32 and the receiving clip 2 33. A sampling block 36 is slidably arranged between the guide plate 38 and the receiving clip 1 32 and the receiving clip 2 33. The distance between the guide plate 38 and the receiving clip 1 32 and the receiving clip 2 33 is the same as the width of the sampling block 36. The guide plate 38 is used to guide the sampling block 36, so that the sampling block 36 can be smoothly moved from the end of the receiving clip 1 32 to the end of the receiving clip 2 33.

[0052] For further information, see Fig.11 , a longitudinal push module 35 is arranged on the upper end of the sampling block 36 accommodating the end of the clamp 1 32, and the longitudinal push module 35 includes a motor, a screw rod and a slider, which is a prior art, and a bolt is connected to a connecting block 353 on the moving end of the longitudinal push module 35, and a push rod 351 is threadedly connected to a slider 352 at the lower end of the connecting block 353, and a push rod 351 is threadedly connected to a slider 352 at the lower end of the push rod 351, and the slider 352 is a quadrangular pyramid, and the slider 352 is slidably connected in the sampling block 36. Through the setting of the slider 352, the slider 352 and the sampling block 36 can slide, which is convenient for the sampling block 36 to move its position, and the longitudinal push module 35 drives the sampling block 36 to move downward through the push rod 351 to complete the sampling.

[0053] For further information, see Figure 12-14 A connecting chute 1 361 and a chute 2 362 are provided at the upper end of the sampling block 36. The chute 1 361 and the chute 2 362 are arranged perpendicular to each other. The chute 1 361 and the chute 2 362 are both dovetail grooves, and the cross-sectional dimensions of the chute 1 361 and the chute 2 362 are the same; the chute 1 361 and the chute 2 362 are used for sliding connection with the slider 352. When the slider 352 slides into the chute 1 361, the sampling block 36 and the slider 352 are relatively fixed in the vertical direction. When the sampling block 36 is driven by the longitudinal pushing module 35 to move downward for sampling, the sampling block 36 is restricted by the guide groove 371, so that the sampling block 36 will not move horizontally, so that the sampling block 36 will not be disconnected from the slider 352.

[0054] Furthermore, adjacent inclined plane 1 364 and inclined plane 2 365 are arranged on one side of the sampling block 36. The inclined plane 1 364 and inclined plane 2 365 are arranged vertically. The horizontal width of the inclined plane 1 364 is greater than the horizontal width of the inclined plane 2 365.

[0055] The other side of the sampling block 36 is provided with a third slope 3641 and a fourth slope 3651, and the first slope 364 and the second slope 365 are arranged axially symmetrically with the third slope 3641 and the fourth slope 3651. When the two sampling blocks 36 are arranged in this way, since the sizes of the first slope 364 and the third slope 3641 are relatively large, the first slope 364 and the third slope 3641 will first contact each other, and the first slope 364 and the third slope 3641 will squeeze each other, so that the two sampling blocks 36 can overlap each other.

[0056] Furthermore, a sampling cavity 366 is arranged at the bottom of the sampling block 36, and a bulk density sampling hole 363 is arranged adjacent to the sampling cavity 366. The bulk density sampling hole 363 is a through hole. A limiting plate 3631 is arranged in the middle of the bulk density sampling hole 363, and a sample ejection rod 367 is slidably arranged in the limiting plate 3631. A disk 1 3671 is arranged at the lower end of the sample ejection rod 367, and a disk 2 3672 is arranged at the upper end of the sample ejection rod 367. The diameters of disk 1 3671 and disk 2 3672 are the same as the inner diameter of the bulk density sampling hole 363.

[0057] During operation, the sampling block 36 moves downward and is inserted into the soil. The soil enters the sampling cavity 266 to sample the soil. At the same time, the soil enters the bulk density sampling hole 363. The soil pushes the disc 3671 to move upward until the disc 3671 abuts against the limiting plate 3631. At this time, the sampling block 36 completes the sampling and returns, and then pushes the sample ejection rod 367 to complete the sample removal.

[0058] For further information, see Fig. 9 The upper sides of the accommodating clip 1 32 and the accommodating clip 2 33 are bolted to the lateral pushing module 34, which is the prior art. The moving end of the lateral pushing module 34 is bolted to the push piece 341, which moves laterally between the accommodating clip 1 32 and the accommodating clip 2 33 and the guide plate 38, and the push piece 341 abuts against the side wall of the sampling block 36 at the end of the accommodating clip 1 32 away from the accommodating clip 2 33. Through the setting of the lateral pushing module 34, the lateral pushing module 34 drives the sampling block 36 to move along the guide plate 38 toward the accommodating clip 2 33 through the push piece 341, and completes the movement of the sampling block 36 from the accommodating clip 1 32 to the accommodating clip 2 33.

[0059] When the sampling block 36 moves, the slider 352 moves along the second slide groove 362, thereby achieving the separation of the slider 352 from the sampling block 36;

[0060] During the movement, the inclined surface 1 364 and the inclined surface 3 3641 of the sampling block first contact each other. Under the action of the squeezing force, the moving sampling block 36 squeezes the sampling block 36 at the end of the accommodating clamp 2 33 into the accommodating clamp 2 33 , completing the storage of the sampling block 36 .

[0061] The working principle of the present invention is as follows: before operation, a sufficient number of sampling blocks 36 are stored in the storage box 31 , and then the baffle 321 is removed, and a sufficient number of sampling blocks 36 are filled in the receiving clip 32 to complete the installation of the sampling blocks 36 .

[0062] Then pull the pull rod 12 to make the wheels 141 contact the ground and pull the device to the sampling position.

[0063] The device is then turned over, and the four positioning rods 13 are aligned and inserted into the soil at the location to be sampled. At this time, the servo motor 26 is started, and the servo motor 26 drives the roller 21 to rotate through the worm gear 28 and the worm 27. The roller 21 drives the four rollers 21 to rotate through the transmission belt 23 and the pulley 22, thereby driving the cutting belt 24 and the cutting knife 25 to rotate. The cutting knife 25 quickly cleans the debris on the soil surface and the surface soil to complete the cleaning work.

[0064] Finally, the longitudinal pushing module 35 drives the sampling block 36 to move downward along the guide groove 371 through the slider 352 to complete the sampling of the soil and soil bulk density samples, and the longitudinal pushing module 35 drives the sampling block 36 to move upward and return.

[0065] Then, the horizontal pushing module 34 drives the sampling block 36 to move toward the second accommodating clamp 33 through the pushing piece 341. During this process, the pushing piece 341 will still block the sampling block 36 in the first accommodating clamp 32 from moving toward the guide plate 38. The pushed sampling block 36 will separate from the slider 352 during the movement, and squeeze the sampling block 36 at the end of the second accommodating clamp 33 to make it enter the second accommodating clamp 33. Under the squeezing action of the spring 322, all the sampling blocks 36 in the second accommodating clamp 33 are fixed.

[0066] Finally, the lateral pushing module 34 drives the push piece 341 to return to its original position. At this time, the push piece 341 no longer squeezes the sampling block 36 in the accommodating clamp 32. The sampling block 36 in the accommodating clamp 32 moves toward the guide plate 38 and abuts against the guide plate 38 under the squeezing action of the spring 322. During this process, the slider 352 enters the slide groove 1 361, so that the slider 352 and the sampling block 36 are relatively fixed in the vertical direction, completing a sampling cycle.

[0067] Then pull the pull rod 12 to pull the device of the present invention to the next sampling position, and repeat the above sampling process.

[0068] The present invention can adapt to various complex roads by arranging the cooperation between the pull rod 12 and the wheel 141, and can easily reach the sampling point. At the same time, the wheel 141 can bear the weight, which reduces the workload of the operator.

[0069] By setting the cleaning component 2, the soil cleaning work can be automatically completed, which is efficient and fast.

[0070] By setting the sampling component 3, soil sampling and soil bulk density sampling can be automatically completed without manual digging and then sampling, and the sampling efficiency is high.

[0071] 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 by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit 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 to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A soil sampling device for environmental protection engineering, comprising a support assembly (1), a cleaning assembly (2) and a sampling assembly (3), characterized in that: The support assembly (1) comprises four vertically arranged longitudinal rods (15), wherein the longitudinal rods (15) are arranged in a hollow rectangular column shape, wherein two adjacent side surfaces of the longitudinal rods (15) are respectively connected to two upper and lower arranged transverse rods 1 (16) and 2 (17), wherein the other ends of the transverse rods 1 (16) and 2 (17) are connected to the longitudinal rods (15), wherein the transverse rods 1 (16), 2 (17) and the longitudinal rods (15) are connected to form a rectangular frame structure, wherein a cleaning assembly (2) is arranged inside the rectangular frame structure, wherein a sampling assembly (3) is arranged inside the cleaning assembly (2), and the outer side of the rectangular frame structure is fixedly connected to a housing (11); The lower ends of the four longitudinal rods (15) are all welded with positioning rods (13), the upper ends of two adjacent longitudinal rods (15) are welded with pull rods (12), the two longitudinal rods (15) at the lower ends of the pull rods (12) are connected to the wheel frame (14) with the same side bolts, and the wheel frame (14) is rotatably provided with wheels (141); The cleaning assembly (2) comprises four parallel rollers (21), the outer sides of the rollers (21) are sleeved with cutting belts (24), a plurality of cutting knives (25) parallel to the rollers (21) are fixed on the outer sides of the cutting belts (24), the two ends of the rollers (21) are rotatably arranged on the longitudinal rod (15) through bearing seats (211), the same ends of the four rollers (21) all penetrate the longitudinal rod (15) and are coaxially fixedly connected to the pulleys (22), and a transmission belt (23) is sleeved between two adjacent pulleys (22). One end of one of the upper rollers (21) away from the pulley (22) passes through the longitudinal rod (15) and is coaxially fixedly connected to a worm wheel (28); the outer side of the worm wheel (28) is meshingly connected to a worm (27); the worm (27) is fixedly connected to an output shaft of a servo motor (26) via a coupling; and the servo motor (26) is fixedly connected to the longitudinal rod (15); The cutting knife (25) comprises a connecting piece (251) fixedly connected to the outside of the cutting belt (24), a plurality of wedge-shaped blocks (252) arranged in parallel are evenly distributed on a side of the connecting piece (251) away from the cutting belt (24), and a blade (253) is fixedly arranged on the outside of the wedge-shaped block (252); Four cutting knives (25) are provided, and a plurality of through holes (241) are provided at intervals at one end of the cutting belt (24); The sampling assembly (3) comprises a bottom plate (37) bolted between two cross bars (16) at the bottom end, a guide groove (371) is arranged at the lower side of one end of the bottom plate (37), a receiving clip (32) and a receiving clip (33) are arranged parallel and adjacent to each other at the upper side of the bottom plate (37), a storage box (31) fixedly connected to the two cross bars (16) at the upper end is arranged at the upper side of the receiving clip (32) and the receiving clip (33), one end of the receiving clip (32) and the receiving clip (33) are bolted to a baffle (321), and two springs (322) are fixedly arranged on one side of the baffle (321) close to the inside of the receiving clip (32) and the receiving clip (33), and the two springs (322) extend into the receiving clip (32) and the receiving clip (33) respectively. A guide plate (38) fixedly connected to the bottom plate (37) is arranged on the outer side of one end of the accommodating clamp (32) and the accommodating clamp (33) away from the baffle plate (321); the guide plate (38) is arranged at a distance from the accommodating clamp (32) and the accommodating clamp (33); a sampling block (36) is slidably arranged between the guide plate (38) and the accommodating clamp (32) and the accommodating clamp (33); and the distance between the guide plate (38) and the accommodating clamp (32) and the accommodating clamp (33) is the same as the width of the sampling block (36).

2. The soil sampling device for environmental protection engineering according to claim 1 is characterized in that: A longitudinal pushing module (35) is arranged at the upper end of the sampling block (36) at the end of the accommodating clamp (32); a connecting block (353) is bolted to the movable end of the longitudinal pushing module (35); a push rod (351) is threadedly connected to the lower end of the connecting block (353); a slider (352) is threadedly connected to the lower end of the push rod (351); the slider (352) is in the shape of a quadrangular pyramid and is slidably connected to the inside of the sampling block (36).

3. The soil sampling device for environmental protection engineering according to claim 2 is characterized in that: A connected chute 1 (361) and chute 2 (362) are arranged at the upper end of the sampling block (36); the chute 1 (361) and chute 2 (362) are arranged perpendicular to each other; the chute 1 (361) and chute 2 (362) are both dovetail grooves; and the cross-sectional dimensions of the chute 1 (361) and chute 2 (362) are the same.

4. The soil sampling device for environmental protection engineering according to claim 3 is characterized by: Adjacent inclined plane 1 (364) and inclined plane 2 (365) are arranged on one side of the sampling block (36), the inclined plane 1 (364) and inclined plane 2 (365) are arranged vertically, and the horizontal width of the inclined plane 1 (364) is greater than the horizontal width of the inclined plane 2 (365). A third slope (3641) and a fourth slope (3651) are arranged on the other side of the sampling block (36), and the first slope (364) and the second slope (365) are arranged axially symmetrically with the third slope (3641) and the fourth slope (3651).

5. The soil sampling device for environmental protection engineering according to claim 4 is characterized in that: A sampling cavity (366) is arranged at the bottom of the sampling block (36), and a bulk density sampling hole (363) is arranged adjacent to the sampling cavity (366). The bulk density sampling hole (363) is a through hole, and a limiting plate (3631) is arranged in the middle of the bulk density sampling hole (363). A sample pushing rod (367) is slidably arranged in the limiting plate (3631), a disk 1 (3671) is arranged at the lower end of the sample pushing rod (367), and a disk 2 (3672) is arranged at the upper end of the sample pushing rod (367), and the diameters of the disk 1 (3671) and the disk 2 (3672) are the same as the inner diameter of the bulk density sampling hole (363).

6. The soil sampling device for environmental protection engineering according to claim 5, characterized in that: The upper sides of the accommodating clamp 1 (32) and the accommodating clamp 2 (33) are bolted to a transverse pushing module (34); the movable end of the transverse pushing module (34) is bolted to a push piece (341); the push piece (341) moves transversely between the accommodating clamp 1 (32) and the accommodating clamp 2 (33) and the guide plate (38); the push piece (341) abuts against a side wall of the sampling block (36) at the end of the accommodating clamp 1 (32) away from the accommodating clamp 2 (33).

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