A soil remediation sampler for layered sampling of soil

Abstract

The present invention belongs to the technical field of soil samplers, and in particular, is a soil remediation sampler for layered soil sampling, comprising a fixed pile for support, the lower end outer surface of the fixed pile is fixedly sleeved with a support base plate, the outer surface of the support base plate is symmetrically distributed and fixedly connected with the support pile, the interior of the fixed pile is provided with a piling mechanism for lifting and lowering, the outer surface of the fixed pile is provided with a supporting mechanism, and the interior of the piling mechanism is provided with a sampling mechanism. The soil remediation sampler for layered soil sampling extends from the opening to contact the soil layer through the soil drilling screw in the connecting rotating tube, and then drives the vertical conveying screw to rotate through the linkage motor, so that it synchronously controls the rotation of the soil drilling screw, thereby realizing the actions of drilling soil, taking soil and conveying sample soil, and then the bevel gear group drives the rotation of the horizontal conveying screw, and then the sample soil conveyed by the vertical conveying screw is horizontally conveyed, so that it falls into the collection shell for collection.

Description

Technical Field

[0001] The invention relates to the technical field of soil samplers, and in particular to a soil remediation sampler for performing layered sampling on soil. Background Art

[0002] Soil remediation technology plays an important role in environmental governance. Especially in the face of the increasingly serious problem of soil pollution, soil remediation has become an important means of ecological restoration and environmental protection. When repairing the soil, it is necessary to use a soil sampler to sample the soil, which facilitates the analysis of the soil composition and the targeted repair of the soil according to the soil composition.

[0003] Pollutants in the soil usually have different distribution characteristics at different depths and layers. Pollutants may be mainly concentrated in the surface layer of the soil, or they may gradually penetrate into deeper layers as the depth of the soil changes. Therefore, in order to accurately assess the status of soil pollution and provide a scientific basis for subsequent remediation work, soil stratification sampling is essential.

[0004] At present, the types and technologies of soil samplers have been widely used, mainly including manual samplers, mechanical samplers, etc. Common soil sampling methods include: Manual sampling method: suitable for small-scale surveys, but due to manual operation and difficult to control sampling depth, it is easy to cause uneven sampling and high labor intensity. Mechanical sampler: Mechanical sampler can improve work efficiency and can accurately control the sampling depth, but usually there are problems such as inaccurate stratified sampling and large soil disturbance, especially in terms of stratification and soil retention. There are certain difficulties, so it is difficult to extract the soil of the required soil layer, so the present invention solves the shortcomings of the above technical problems. Summary of the invention

[0005] Based on the above existing technical problems, the present invention proposes a soil remediation sampler for performing stratified sampling of soil.

[0006] The present invention proposes a soil remediation sampler for layered sampling of soil, comprising a fixed pile for support, wherein the outer surface of the lower end of the fixed pile is fixedly sleeved with a supporting base plate, the outer surface of the supporting base plate is symmetrically distributed and fixedly connected with supporting piles, a piling mechanism for lifting and lowering is arranged inside the fixed pile, a supporting mechanism is arranged on the outer surface of the fixed pile, and a sampling mechanism is arranged inside the piling mechanism.

[0007] The pile driving mechanism is lifted and lowered inside the fixed pile, and the pile driving mechanism includes a drilling screw, which drills into a hole in the soil surface for sampling when the drilling screw rotates.

[0008] Wherein, the supporting mechanism performs angle adjustment synchronously when the pile driving mechanism is lifted, lowered and rotated. The supporting mechanism includes a tilt rod, one end of which is hinged to the upper surface of the corresponding supporting pile through a hinge seat, and the free end of the tilt rod is height-adjusted to change its supporting angle.

[0009] Wherein, the sampling mechanism comprises a soil drilling screw, and the soil drilling screw rotates when the drilling screw stops rotating, thereby drilling the sampling layer and taking away the drilled sample soil.

[0010] Preferably, the piling mechanism further comprises a soil-breaking toothed disc fixedly connected to the lower surface of the drilling screw, the outer surface of the upper end of the drilling screw is rotatably connected to a connecting pile plate via a bearing, and the outer surface of the drilling screw is fixedly sleeved with a driven gear.

[0011] Through the above technical solution, the supporting piles are nailed into the surroundings of the sampled soil, so as to support the fixed piles. In order to control the downward movement of the drilling screw and keep rotating to break the soil, the pile plate is connected to the hydraulic system of the pile driver. The hydraulic system controls the connecting pile plate to drive the drilling screw to move downward, and the rotation of the drilling screw and the breaking toothed disc is realized by the rotation of the driven gear, so that the sampled soil can be drilled and then sampling at different levels can be carried out.

[0012] Preferably, the piling mechanism also includes a reduction motor fixedly connected to the lower surface of one end of the connecting pile plate, the outer surface of the output shaft of the reduction motor extends to the upper surface of the connecting pile plate and is fixedly connected to two driving gears through a coupling, and the driving gear at the lower end is meshed with the driven gear.

[0013] Through the above technical solution, in order to drive the driven gear to rotate and realize drilling, the two driving gears are driven to rotate by the reduction motor, and one of the driving gears drives the driven gear to control the rotation of the drilling screw through the meshing transmission relationship.

[0014] Preferably, the support mechanism also includes a connecting platform slidably sleeved on the outer surface of the fixed pile, the free ends of the plurality of inclination rods are hinged to the outer surface of the connecting platform through another set of hinge seats, the upper surface of the support base plate is rotatably connected to a rotating rod with a transmission thread through a bearing, and the outer surface of the connecting platform is threadedly sleeved on the outer surface of the transmission thread of the rotating rod.

[0015] Through the above technical solution, the inclination rod is arranged in an inclined shape on the surrounding surfaces of the fixed pile, thereby forming a triangular stability to support the sampling construction process. In order to make the inclination angle match the height of the drilling screw to form a fixed stability, the free end of the inclination rod descends as the drilling screw descends, and then the four rotating rods rotate synchronously, so that the threaded connection platform is adjusted in height on the outer surface of the fixed pile, thereby achieving support stability.

[0016] Preferably, the support mechanism also includes a transmission gear that is slidably engaged with the outer surface of one of the rotating rods through the cooperation of a set of keys and key blocks. The transmission gear moves synchronously with the driving gear by rotating a support plate that is sleeved on the outer surface of the output shaft of the reduction motor. The transmission gear is meshed with the driving gear at the upper end, and a linkage housing is installed on the upper surfaces of the four rotating rods.

[0017] Through the above technical scheme, in order to realize the synchronous movement of the inclination rod and the drilling screw, a pulley assembly for driving the four rotating rods to be linked is arranged inside the linkage housing, and the transmission gear always keeps meshing with one of the driving gears, and then when the reduction motor drives the two driving gears to rotate, the rotation of the drilling screw and multiple rotating rods can be realized, and then the height of the free end of the inclination rod can be adjusted.

[0018] Preferably, the sampling mechanism also includes a movable cavity opened through the upper and lower surfaces of the drilling screw, the outer surface of the lower end of the drilling screw is rotatably connected to a concave tube through a bearing, an opening is opened through the middle surface of the concave tube, the outer surface of the drilling screw is slidably connected to the inner wall of the opening, the inner bottom wall of the concave tube is provided with path grooves distributed in an annular array, the inner bottom wall of the concave tube is slidably connected with a sealing plate with an adjusting column distributed in an annular array, and the outer surface of the adjusting column is slidably engaged with the inner bottom wall of the path groove.

[0019] Through the above technical scheme, in order to sample the soil at the required layer, the opening of the concave tube wrapped by the soil-breaking toothed disc is first in a sealed state. When the required layer is reached, the opening is exposed. At this time, the soil drilling screw extends out, and the soil can be sampled after drilling. In order to seal the opening, multiple sealing plates are in a closed state to seal the opening, and then the concave tube is rotated to make the adjusting column of the sealing plate move along the path in the path groove, so that the sealing plate rotates open to expose the opening.

[0020] Preferably, the sampling mechanism also includes a cover plate rotatably connected to the inner wall of the concave tube, and another group of the adjusting columns are fixedly connected to the lower surface of the cover plate in a circular array, and corresponding grooves are penetrated through the upper surface of the sealing plate, and the outer surface of the other group of adjusting columns is slidably engaged with the inner wall of the corresponding groove.

[0021] Through the above technical solution, in order to drive the sealing plate to rotate to open and seal the opening, the concave tube drives the adjusting column of the sealing plate to move in the corresponding groove when rotating, and the cover plate is crimped on the upper surface of the sealing plate, so that the corresponding groove of the sealing plate slides on the outer surface of the adjusting column of the cover plate, and then the sealing plate between the concave tube and the cover plate extends to seal the opening, and retracts to expose the opening.

[0022] Preferably, the sampling mechanism also includes a connecting rotating tube fixedly connected to the inner wall of the concave tube, the connecting rotating tube is composed of a vertical branch tube and a horizontal branch tube, the outer surface of the vertical branch tube of the connecting rotating tube is rotatably connected to the inner wall of the movable cavity through a bearing, and the outer surface of the upper end thereof extends to the upper surface of the drilling screw, the inner surface of the linkage shell is fixedly connected with a connecting block, the outer surface of the upper end of the vertical branch tube of the connecting rotating tube is slidably sleeved with a rotating gear with a connecting tube through another set of keys and the key block, the outer surface of the connecting tube of the rotating gear is rotatably connected to the inner surface of the connecting block, the upper surface of the linkage shell is fixedly connected with a rotating motor, the outer surface of the output shaft of the rotating motor is fixedly connected with a driving gear through a coupling, and the driving gear is meshed with the rotating gear.

[0023] Through the above technical scheme, in order to drive the rotation of the concave tube, the connecting rotating tube is driven to rotate at the upper end of the drilling screw, thereby driving the concave tube to rotate to achieve the adjustment of the sealing plate, and the connecting rotating tube moves up and down with the drilling screw. Therefore, in order to drive the connecting rotating tube to rotate, the rotating gear is connected to the connecting rotating tube through the key and the key block, and the driving gear is driven to rotate by the rotating motor, so that the rotating gear meshing with it drives the connecting rotating tube to rotate.

[0024] Preferably, the sampling mechanism also includes a vertical conveying screw rotatably connected to the inside of the connecting rotating tube through a bearing, a pushing cylinder is installed on the lower surface of the vertical conveying screw through an opening in the installation cavity, the lower surface of the piston rod of the pushing cylinder is fixedly connected to the upper surface of the drilling screw, a stainless steel bellows is fixedly connected to the lower surface of the vertical conveying screw and the upper surface of the drilling screw, the upper surface of the drilling screw is fixedly connected with supporting steel distributed in a circular array, and the outer surface of the supporting steel is slidably connected to the inner wall of the sliding hole opened on the lower surface of the vertical conveying screw.

[0025] Through the above technical scheme, in order to sample the soil at the required level, when the opening of the concave tube is exposed, the drilling screw in the connecting rotating tube extends from the opening to contact the soil level. As the drilling screw rotates, the sample soil is drilled and transported to the connecting rotating tube. As the sample soil is collected and accumulated, when the vertical conveying screw rotates, the accumulated sample soil is transported upward for collection. In order to control the downward extension of the drilling screw, the pushing cylinder in the vertical conveying screw pushes the drilling screw downward, and the piston rod is protected by a stainless steel bellows to avoid soil clogging. In order to provide stability for the drilling screw as the vertical conveying screw rotates, the two are connected by a supporting steel.

[0026] Preferably, the sampling mechanism also includes a transverse conveying screw rotatably connected to the inner wall of the transverse branch of the connecting rotating tube, one side surface of the transverse conveying screw is rotatably connected to a connecting block, the outer surface of the vertical conveying screw is provided with a connecting slot, the outer surface of the connecting block is slidably engaged with the inner wall of the connecting slot, the upper surface of the connecting rotating tube is fixedly connected to a pulley assembly housing, the lower surface of one end of the pulley assembly housing and the outer surface of one end of the transverse conveying screw are installed with a bevel gear set, the upper surface of the pulley assembly housing is fixedly connected to a linkage motor that drives the vertical conveying screw to rotate, and the lower surface of the transverse branch of the connecting rotating tube is fixedly connected to a collection housing through a connecting pipe.

[0027] Through the above technical scheme, in order to drive the rotation of the vertical conveying screw and the soil drilling screw, the vertical conveying screw is driven to rotate by the linkage motor, so that it synchronously controls the rotation of the soil drilling screw, thereby realizing the actions of drilling soil, taking soil and transporting sample soil. In order to collect the sample soil, the transverse conveying screw rotates synchronously, and the sample soil transported by the vertical conveying screw is horizontally transported, and then falls into the collection shell for collection. In order to drive the vertical conveying screw and the transverse conveying screw to rotate synchronously, a pulley assembly is arranged inside the pulley shell assembly shell, so that the output shaft of the linkage motor is linked with the connecting shaft of the bevel gear group, so that the linkage motor drives the bevel gear group to rotate, and the bevel gear group realizes the rotation of the transverse conveying screw. In order to support the free end of the transverse conveying screw with force, its free end is connected to the vertical conveying screw through a connecting block.

[0028] The beneficial effects of the present invention are:

[0029] 1. By setting up a supporting mechanism, the action of stratified sampling can be supported to improve the stability of the system. During the adjustment process, when the drilling screw is driven downward by the hydraulic system, another rotating driving gear drives the transmission gear that moves downward synchronously to rotate, and then the rotating rod that is slidably engaged with the transmission gear rotates, and the other three rotating rods rotate synchronously under the linkage of the pulley assembly in the linkage housing, so that the threaded sleeve connection table is adjusted in height on the outer surface of the fixed pile, thereby changing the inclination angle of the free end of the inclination rod to make it consistent with the height of the drilling screw to form a fixed stability, thereby avoiding the damage to the soil environment caused by the inclination of the sampling action.

[0030] 2. By setting up a sampling mechanism, the sampling layer can be drilled and the drilled soil sample can be taken away for collection. During the adjustment process, the soil drilling screw in the connecting rotating tube extends from the opening to contact the soil layer, and then the vertical conveying screw is driven to rotate by the linkage motor to synchronously control the rotation of the soil drilling screw, thereby realizing the actions of drilling soil, taking soil and conveying soil samples. Then the bevel gear set drives the rotation of the horizontal conveying screw, and then the soil sample conveyed by the vertical conveying screw is horizontally conveyed to fall into the collection shell for collection. Therefore, the sampler is easy to operate, has a high degree of automation, and reduces the influence of human factors on the sampling accuracy.

[0031] 3. By setting a sealing plate, the sampling mechanism can be sealed so that the sampling mechanism will not be activated until it reaches the required level, thereby improving the accuracy of sampling. During the adjustment process, the concave tube drives the adjusting column of the sealing plate to move in the corresponding groove when it rotates, and the cover plate is pressed on the upper surface of the sealing plate, so that the corresponding groove of the sealing plate slides on the outer surface of the adjusting column of the cover plate, and then the sealing plate between the concave tube and the cover plate is retracted to expose the opening for sampling, otherwise the opening is sealed, thereby achieving the accuracy of sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of a soil remediation sampler for layered soil sampling proposed by the present invention;

[0033] Figure 2 A three-dimensional diagram of the inclination rod structure of a soil remediation sampler for layered soil sampling proposed by the present invention;

[0034] Figure 3 A three-dimensional diagram of the drilling screw structure of a soil remediation sampler for layered soil sampling proposed by the present invention;

[0035] Figure 4 A three-dimensional diagram of the driving gear structure of a soil remediation sampler for layered soil sampling proposed by the present invention;

[0036] Figure 5A three-dimensional diagram of the driving cylinder structure of a soil remediation sampler for layered soil sampling proposed by the present invention;

[0037] Figure 6 A three-dimensional diagram of the sealing plate structure of a soil remediation sampler for layered soil sampling proposed by the present invention;

[0038] Figure 7 A three-dimensional diagram of the cover structure of a soil remediation sampler for layered soil sampling proposed by the present invention;

[0039] Figure 8 A three-dimensional diagram of the rotating gear structure of a soil remediation sampler for layered soil sampling proposed by the present invention;

[0040] Fig. 9 A three-dimensional diagram of the collecting shell structure of a soil remediation sampler for layered soil sampling proposed by the present invention;

[0041] Fig.10 A three-dimensional diagram of the transverse conveying screw structure of a soil remediation sampler for layered soil sampling proposed by the present invention;

[0042] Fig.11 A three-dimensional diagram of the connection slot structure of a soil remediation sampler for layered soil sampling proposed by the present invention;

[0043] Fig.12 A three-dimensional diagram of the structure of a bevel gear set of a soil remediation sampler for layered soil sampling proposed by the present invention.

[0044] In the figure: 1, fixed pile; 2, supporting bottom plate; 3, supporting pile; 4, pile driving mechanism; 41, drilling screw; 42, soil breaking toothed disc; 43, connecting pile plate; 44, driven gear; 45, reduction motor; 46, driving gear; 5, supporting mechanism; 51, connecting platform; 52, inclination rod; 53, rotating rod; 54, transmission gear; 55, linkage housing; 6, sampling mechanism; 61, movable cavity; 62, concave tube; 63, soil drilling screw; 64, path groove ; 65. Sealing plate; 66. Cover plate; 67. Corresponding groove; 68. Connecting rotating tube; 69. Connecting block; 70. Rotating gear; 71. Rotating motor; 72. Driving gear; 73. Vertical conveying screw; 74. Pushing cylinder; 75. Stainless steel bellows; 76. Support steel; 77. Horizontal conveying screw; 78. Connecting block; 79. Connecting slot; 80. Pulley assembly housing; 81. Bevel gear set; 82. Linkage motor; 83. Collection housing. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0046] Reference Figure 1-Figure 12 A soil remediation sampler for layered sampling of soil includes a fixed pile 1 for support, a support base plate 2 is fixedly sleeved on the outer surface of the lower end of the fixed pile 1, and a support pile 3 is symmetrically distributed and fixedly connected to the outer surface of the support base plate 2. A piling mechanism 4 for lifting and lowering is arranged inside the fixed pile 1, a supporting mechanism 5 is arranged on the outer surface of the fixed pile 1, and a sampling mechanism 6 is arranged inside the piling mechanism 4.

[0047] The pile driving mechanism 4 is lifted and lowered inside the fixed pile 1 , and the pile driving mechanism 4 includes a drilling screw 41 , and the drilling screw 41 drills into a hole in the soil surface to be sampled when it rotates.

[0048] The supporting piles 3 are driven into the surrounding of the sampled soil, so as to support the fixed piles 1. In order to control the downward movement of the drilling screw 41 and keep rotating to break the soil, the pile driving mechanism 4 also includes a breaking toothed disk 42 fixedly connected to the lower surface of the drilling screw 41. The upper outer surface of the drilling screw 41 is rotatably connected to a connecting pile plate 43 through a bearing. The outer surface of the drilling screw 41 is fixedly sleeved with a driven gear 44. The connecting pile plate 43 is connected to the hydraulic system of the pile driver. The hydraulic system controls the connecting pile plate 43 to drive the drilling screw 41 to move downward, and the rotation of the drilling screw 41 and the breaking toothed disk 42 is realized by the rotation of the driven gear 44, so that the sampled soil can be drilled and then sampling at different levels can be carried out.

[0049] In order to drive the driven gear 44 to rotate and realize drilling, the pile driving mechanism 4 also includes a reduction motor 45 fixedly connected to the lower surface of one end of the connecting pile plate 43. The outer surface of the output shaft of the reduction motor 45 extends to the upper surface of the connecting pile plate 43 and is fixedly connected to two driving gears 46 through a coupling. The lower end driving gear 46 is meshed with the driven gear 44. The two driving gears 46 are driven to rotate by the reduction motor 45. One of the driving gears 46 drives the driven gear 44 to control the rotation of the drilling screw 41 through the meshing transmission relationship.

[0050] Among them, the support mechanism 5 is synchronously adjusted in angle when the piling mechanism 4 is lifted, lowered and rotated. The support mechanism 5 includes a tilt rod 52, one end of which is hinged to the upper surface of the corresponding supporting pile 3 through a hinge seat, and the free end of the tilt rod 52 is height-adjusted to change its supporting angle.

[0051] The inclination rods 52 are arranged in an inclined shape on the surrounding surfaces of the fixed pile 1, thereby forming a triangular stability to support the sampling construction process. In order to make the inclination angle conform to the height of the drilling screw 41 and form a fixed stability, the support mechanism 5 also includes a connecting platform 51 that is slidably sleeved on the outer surface of the fixed pile 1, and the free ends of multiple inclination rods 52 are hinged to the outer surface of the connecting platform 51 through another group of hinge seats. The upper surface of the support base plate 2 is rotatably connected to a rotating rod 53 with a transmission thread through a bearing. The outer surface of the connecting platform 51 is threadedly sleeved on the outer surface of the transmission thread of the rotating rod 53. The free end of the inclination rod 52 descends as the drilling screw 41 descends, and thus the four rotating rods 53 rotate synchronously, so that the threaded connecting platform 51 is height-adjusted on the outer surface of the fixed pile 1, thereby achieving support stability.

[0052] In order to realize the synchronous movement of the inclination rod 52 and the drilling screw 41, the support mechanism 5 also includes a transmission gear 54 which is slidably engaged with the outer surface of one of the rotating rods 53 through the cooperation of a group of keys and key blocks. The transmission gear 54 moves synchronously with the driving gear 46 by rotating the support plate sleeved on the outer surface of the output shaft of the reduction motor 45. The transmission gear 54 is meshed with the upper driving gear 46. A linkage housing 55 is installed on the upper surface of the four rotating rods 53. A pulley assembly for driving the four rotating rods 53 in linkage is arranged inside the linkage housing 55, and the transmission gear 54 always keeps meshing with one of the driving gears 46. Then, when the reduction motor 45 drives the two driving gears 46 to rotate, the rotation of the drilling screw 41 and the rotation of multiple rotating rods 53 can be realized, and then the height of the free end of the inclination rod 52 can be adjusted.

[0053] By setting up the supporting mechanism 5, the stratified sampling action can be supported to improve the stability of the system. During the adjustment process, when the drilling screw 41 is driven downward by the hydraulic system, another rotating driving gear 46 drives the transmission gear 54 that moves downward synchronously to rotate, and then the rotating rod 53 that is slidably engaged with the transmission gear 54 rotates, and the other three rotating rods 53 rotate synchronously under the linkage of the pulley assembly in the linkage housing 55, so that the threaded connection platform 51 is adjusted in height on the outer surface of the fixed pile 1, thereby changing the inclination angle of the free end of the inclination rod 52 to make it conform to the height of the drilling screw 41 to form a fixed stability, thereby avoiding the damage to the soil environment caused by the tilt of the sampling action.

[0054] The sampling mechanism 6 includes a soil drilling screw 63, which rotates when the drilling screw 41 stops rotating, thereby drilling the sampling layer and taking away the drilled soil sample.

[0055] In order to sample the soil at the required layer, the sampling mechanism 6 also includes a movable cavity 61 that is opened through the upper and lower surfaces of the drilling screw 41. The outer surface of the lower end of the drilling screw 41 is rotatably connected to a concave tube 62 through a bearing. The middle surface of the concave tube 62 is penetrated with an opening. The outer surface of the soil drilling screw 63 is slidably connected to the inner wall of the opening. The opening of the concave tube 62 wrapped by the soil breaking toothed disc 42 is first in a sealed state. When the required layer is reached, the opening is exposed, and the soil drilling screw 63 is extended at this time. After drilling, the soil can be sampled. Soil sampling is carried out. In order to seal the opening, the inner bottom wall of the concave tube 62 is provided with path grooves 64 in a circular array. The inner bottom wall of the concave tube 62 is slidably connected with a sealing plate 65 with an adjusting column in a circular array. The outer surface of the adjusting column is slidably engaged with the inner bottom wall of the path groove 64. The plurality of sealing plates 65 are in a closed state to seal the opening. Then, by rotating the concave tube 62, the adjusting column of the sealing plate 65 moves along the path in the path groove 64, so that the sealing plate 65 rotates open to expose the opening.

[0056] In order to drive the sealing plate 65 to rotate to open and seal the opening, the sampling mechanism 6 also includes a cover plate 66 rotatably connected to the inner wall of the concave tube 62. The lower surface of the cover plate 66 is fixedly connected with another group of adjusting columns distributed in a circular array. The upper surface of the sealing plate 65 is penetrated by corresponding grooves 67. The outer surface of the other group of adjusting columns is slidably engaged with the inner wall of the corresponding grooves 67. When the concave tube 62 rotates, the adjusting columns of the sealing plate 65 are driven to move in the corresponding grooves 67, and the cover plate 66 is pressed against the upper surface of the sealing plate 65, so that the corresponding grooves 67 of the sealing plate 65 slide on the outer surface of the adjusting columns of the cover plate 66, so that the sealing plate 65 between the concave tube 62 and the cover plate 66 extends to seal the opening, and retracts to expose the opening.

[0057] In order to drive the rotation of the concave tube 62, the sampling mechanism 6 also includes a connecting rotating tube 68 fixedly connected to the inner wall of the concave tube 62. The connecting rotating tube 68 is composed of a vertical branch tube and a horizontal branch tube. The outer surface of the vertical branch tube of the connecting rotating tube 68 is rotatably connected to the inner wall of the movable cavity 61 through a bearing, and the outer surface of its upper end extends to the upper surface of the drilling screw 41. By driving the connecting rotating tube 68 to rotate at the upper end of the drilling screw 41, the concave tube 62 is driven to rotate to achieve the adjustment of the sealing plate 65, and the connecting rotating tube 68 moves up and down with the drilling screw 41. Therefore, in order to drive the connecting rotating tube 68 to rotate, the inner surface of the linkage housing 55 is fixedly connected with a connecting Block 69, the outer surface of the upper end of the vertical branch pipe connecting the rotating pipe 68 is slidably sleeved with a rotating gear 70 with a connecting pipe through another set of keys and the key block. The outer surface of the connecting pipe of the rotating gear 70 is rotatably connected to the inner surface of the connecting block 69. The upper surface of the linkage housing 55 is fixedly connected to a rotating motor 71. The outer surface of the output shaft of the rotating motor 71 is fixedly connected to a driving gear 72 through a coupling. The driving gear 72 is meshed with the rotating gear 70. The rotating gear 70 is connected to the connecting rotating pipe 68 through a key and a key block. The driving gear 72 is driven to rotate by the rotating motor 71, so that the rotating gear 70 meshed with it drives the connecting rotating pipe 68 to rotate.

[0058] By setting the sealing plate 65, the sampling mechanism 6 can be sealed, so that the sampling mechanism 6 will not be activated until it reaches the required level, thereby improving the accuracy of sampling. During the adjustment process, the concave tube 62 drives the adjustment column of the sealing plate 65 to move in the corresponding groove 67 when it rotates, and the cover plate 66 is pressed on the upper surface of the sealing plate 65, so that the corresponding groove 67 of the sealing plate 65 slides on the outer surface of the adjustment column of the cover plate 66, and then the sealing plate 65 between the concave tube 62 and the cover plate 66 is retracted to expose the opening for sampling, otherwise the opening is sealed, thereby achieving the accuracy of sampling.

[0059] In order to sample the soil at the required level, when the opening of the concave tube 62 is exposed, the soil drilling screw 63 in the connecting rotating tube 68 extends from the opening to contact the soil level. As the soil drilling screw 63 rotates, the sample soil is drilled and transported to the connecting rotating tube 68. As the sample soil is collected and accumulated, when the vertical transport screw 73 rotates, the accumulated sample soil is transported upward for collection. In order to control the downward extension of the soil drilling screw 63, the sampling mechanism 6 also includes a vertical transport screw 73 rotatably connected to the inside of the connecting rotating tube 68 through a bearing, and a push cylinder 7 is installed on the lower surface of the vertical transport screw 73 through an installation cavity. 4. The lower surface of the piston rod of the push cylinder 74 is fixedly connected to the upper surface of the drilling screw 63. The lower surface of the vertical conveying screw 73 and the upper surface of the drilling screw 63 are fixedly connected with a stainless steel bellows 75. The push cylinder 74 in the vertical conveying screw 73 pushes the drilling screw 63 to move downward, and the piston rod is protected by the stainless steel bellows 75 to avoid soil clogging. In order to provide stability for the drilling screw 63 as the vertical conveying screw 73 rotates, the upper surface of the drilling screw 63 is fixedly connected with support steels 76 in an annular array. The outer surface of the support steel 76 is slidably connected to the inner wall of the sliding hole opened on the lower surface of the vertical conveying screw 73.

[0060] In order to drive the rotation of the vertical conveying screw 73 and the drilling screw 63, the vertical conveying screw 73 is driven to rotate by the linkage motor 82, so that it synchronously controls the rotation of the drilling screw 63, thereby realizing the actions of drilling soil, taking soil and conveying sample soil. In order to collect the sample soil, the sampling mechanism 6 also includes a transverse conveying screw 77 rotatably connected to the inner wall of the transverse branch pipe connecting the rotating tube 68. The lower surface of the transverse branch pipe connecting the rotating tube 68 is fixedly connected to the collection shell 83 through a connecting pipe. The transverse conveying screw 77 rotates synchronously to horizontally convey the sample soil conveyed by the vertical conveying screw 73, and then falls into the collection shell 83 for collection. In order to support the free end of the transverse conveying screw 77, a connecting block 78 is rotatably connected to the surface of one side of the transverse conveying screw 77, and a connecting block is provided on the outer surface of the vertical conveying screw 73. The outer surface of the connecting block 78 is slidably engaged with the inner wall of the connecting slot 79, and its free end is connected to the vertical conveying screw 73 through the connecting block 78. In order to drive the vertical conveying screw 73 and the horizontal conveying screw 77 to rotate synchronously, the upper surface of the connecting rotating tube 68 is fixedly connected to a pulley assembly housing 80, and a bevel gear set 81 is installed on the lower surface of one end of the pulley assembly housing 80 and the outer surface of one end of the horizontal conveying screw 77. The upper surface of the pulley assembly housing 80 is fixedly connected to a linkage motor 82 that drives the vertical conveying screw 73 to rotate. A pulley assembly is arranged inside the pulley housing assembly housing, so that the output shaft of the linkage motor 82 is linked with the connecting shaft of the bevel gear set 81, so that the linkage motor 82 drives the bevel gear set 81 to rotate, and the bevel gear set 81 realizes the rotation of the horizontal conveying screw 77.

[0061] By setting up the sampling mechanism 6, the sampling layer can be drilled and the drilled soil sample can be taken away for collection. During the adjustment process, the drilling screw 63 in the connecting rotating tube 68 extends from the opening to contact the soil layer, and then the vertical conveying screw 73 is driven to rotate by the linkage motor 82, so that the rotation of the drilling screw 63 is synchronously controlled, thereby realizing the actions of drilling soil, taking soil and conveying soil samples. Then the bevel gear set 81 drives the horizontal conveying screw 77 to rotate, and then the soil sample conveyed by the vertical conveying screw 73 is horizontally conveyed to fall into the collection shell 83 for collection. Therefore, the sampler is easy to operate, has a high degree of automation, and reduces the influence of human factors on the sampling accuracy.

[0062] Working principle: In a specific embodiment of the present invention, the support pile 3 is nailed into the surrounding of the sampled soil, so that the fixed pile 1 can be supported. Before sampling the soil, the surface soil needs to be broken first, and the reduction motor 45 drives the two driving gears 46 to rotate. One of the driving gears 46 drives the driven gear 44 to control the rotation of the drilling screw 41 and the rotation of the soil breaking toothed disc 42 through the relationship of meshing transmission. After the soil breaking toothed disc 42 breaks the surface soil, the connecting pile plate 43 is controlled by the hydraulic system to drive the drilling screw 41 to move downward. With the rotation of the drilling screw 41, the drilling action is completed, and the soil that does not need to be collected is transported to the surface of the soil along with the inner surface of the fixed pile 1;

[0063] When the hydraulic system drives the drilling screw 41 to move downward, another rotating driving gear 46 drives the transmission gear 54 that moves downward synchronously to rotate, and then the rotating rod 53 that is slidably engaged with the transmission gear 54 rotates, and the other three rotating rods 53 rotate synchronously under the linkage of the pulley assembly in the linkage housing 55, so that the threaded connection platform 51 is adjusted in height on the outer surface of the fixed pile 1, thereby changing the inclination angle of the free end of the inclination rod 52 to make it conform to the height of the drilling screw 41 to form a fixed stability;

[0064] When the drilling screw 41 reaches the sampling soil layer, the reduction motor 45 stops working, and the drilling screw 41 stops rotating, and the inclination rod 52 forms a fixed support. At this time, the rotating motor 71 drives the driving gear 72 to rotate, and the rotating gear 70 meshing with the driving gear 72 drives the connecting rotating tube 68 to rotate, and the concave tube 62 rotates synchronously. When the concave tube 62 rotates, it drives the adjusting column of the sealing plate 65 to move in the corresponding groove 67, and the cover plate 66 is pressed on the upper surface of the sealing plate 65, so that the corresponding groove 67 of the sealing plate 65 slides on the outer surface of the adjusting column of the cover plate 66, and then the sealing plate 65 between the concave tube 62 and the cover plate 66 retracts to expose the opening;

[0065] When the opening of the concave tube 62 is exposed, the push cylinder 74 in the vertical conveying screw 73 pushes the soil drilling screw 63 to move downward, and after the stainless steel corrugated tube 75 is stretched, the soil drilling screw 63 in the connecting rotating tube 68 extends out from the opening to contact the soil surface, and then the vertical conveying screw 73 is driven to rotate by the linkage motor 82, so that the rotation of the soil drilling screw 63 is synchronously controlled, thereby realizing the actions of drilling soil, taking soil and conveying sample soil;

[0066] In order to collect the sample soil, a pulley assembly is arranged inside the pulley housing assembly so that the output shaft of the linkage motor 82 is linked with the connecting shaft of the bevel gear set 81, so that the linkage motor 82 drives the bevel gear set 81 to rotate, and the bevel gear set 81 drives the rotation of the horizontal conveying screw 77, and then the sample soil conveyed by the vertical conveying screw 73 is horizontally conveyed so that it falls into the collection housing 83 for collection.

[0067] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A soil remediation sampler for layered sampling of soil, comprising a fixed pile (1) for support, characterized in that: The lower end outer surface of the fixed pile (1) is fixedly sleeved with a supporting base plate (2), the outer surface of the supporting base plate (2) is symmetrically distributed and fixedly connected with supporting piles (3), a lifting and lowering piling mechanism (4) is arranged inside the fixed pile (1), a supporting mechanism (5) is arranged on the outer surface of the fixed pile (1), and a sampling mechanism (6) is arranged inside the piling mechanism (4); The piling mechanism (4) is raised and lowered inside the fixed pile (1), and the piling mechanism (4) comprises a drilling screw (41), and when the drilling screw (41) rotates, it drills a hole in the soil surface to be sampled; The piling mechanism (4) further comprises a soil breaking toothed disc (42) fixedly connected to the lower surface of the drilling screw (41); the upper outer surface of the drilling screw (41) is rotatably connected to a connecting pile plate (43) via a bearing; and the outer surface of the drilling screw (41) is fixedly sleeved with a driven gear (44); The piling mechanism (4) further comprises a reduction motor (45) fixedly connected to the lower surface of one end of the connecting pile plate (43), the outer surface of the output shaft of the reduction motor (45) extending to the upper surface of the connecting pile plate (43) and fixedly connected to two driving gears (46) via a coupling, the driving gear (46) at the lower end being meshed with the driven gear (44); The support mechanism (5) is configured to adjust the angle synchronously when the pile driving mechanism (4) is raised and lowered and rotated, and the support mechanism (5) comprises a tilting rod (52), one end of which is hinged to the upper surface of the corresponding support pile (3) through a hinge seat, and the free end of the tilting rod (52) is height-adjusted to change its support angle, and the upper surface of the support base plate (2) is rotatably connected to a rotating rod (53) with a transmission thread through a bearing; The support mechanism (5) further comprises a transmission gear (54) which is slidably engaged with the outer surface of one of the rotating rods (53) by means of a set of keys and a key block, the transmission gear (54) moves synchronously with the driving gear (46) by rotating a support plate sleeved on the outer surface of the output shaft of the reduction motor (45), the transmission gear (54) meshes with the driving gear (46) at the upper end, and a linkage housing (55) is installed on the upper surfaces of the four rotating rods (53); The sampling mechanism (6) comprises a soil drilling screw (63), and the soil drilling screw (63) rotates when the drilling screw (41) stops rotating, thereby drilling the sampling layer and taking away the drilled soil sample; The sampling mechanism (6) further comprises a movable cavity (61) which is opened through the upper and lower surfaces of the drilling screw (41); the outer surface of the lower end of the drilling screw (41) is rotatably connected to a concave tube (62) via a bearing; an opening is opened through the middle surface of the concave tube (62); the outer surface of the soil drilling screw (63) is slidably connected to the inner wall of the opening; the inner bottom wall of the concave tube (62) is provided with path grooves (64) distributed in an annular array; the inner bottom wall of the concave tube (62) is slidably connected to a sealing plate (65) with an adjustment column distributed in an annular array; the outer surface of the adjustment column is slidably engaged with the inner bottom wall of the path groove (64); The sampling mechanism (6) further comprises a connecting rotating tube (68) fixedly connected to the inner wall of the concave tube (62), and the sampling mechanism (6) further comprises a vertical conveying screw (73) rotatably connected to the inside of the connecting rotating tube (68) through a bearing, a pushing cylinder (74) is installed on the lower surface of the vertical conveying screw (73) through an opening of a mounting cavity, the lower surface of the piston rod of the pushing cylinder (74) is fixedly connected to the upper surface of the soil drilling screw (63), a stainless steel bellows (75) is fixedly connected to the lower surface of the vertical conveying screw (73) and the upper surface of the soil drilling screw (63), and support steels (76) are fixedly connected to the upper surface of the soil drilling screw (63) in an annular array, and the outer surface of the support steels (76) is slidably connected to the inner wall of a sliding hole opened on the lower surface of the vertical conveying screw (73); The sampling mechanism (6) further comprises a transverse conveying screw (77) rotatably connected to the inner wall of the transverse branch pipe of the connecting rotating tube (68); a connecting block (78) is rotatably connected to one side surface of the transverse conveying screw (77); a connecting slot (79) is provided on the outer surface of the vertical conveying screw (73); the outer surface of the connecting block (78) is slidably engaged with the inner wall of the connecting slot (79); a pulley assembly housing (80) is fixedly connected to the upper surface of the connecting rotating tube (68); a bevel gear set (81) is installed on the lower surface of one end of the pulley assembly housing (80) and the outer surface of one end of the transverse conveying screw (77); a linkage motor (82) for driving the vertical conveying screw (73) to rotate is fixedly connected to the upper surface of the pulley assembly housing (80); and a collecting housing (83) is fixedly connected to the lower surface of the transverse branch pipe of the connecting rotating tube (68) via a connecting pipe.

2. A soil remediation sampler for stratified soil sampling according to claim 1, characterized in that: The support mechanism (5) further comprises a connecting platform (51) slidably sleeved on the outer surface of the fixed pile (1), the free ends of the plurality of inclination rods (52) being hinged to the outer surface of the connecting platform (51) via another set of hinge seats, and the outer surface of the connecting platform (51) being threadedly sleeved on the outer surface of the transmission thread of the rotating rod (53).

3. A soil remediation sampler for stratified soil sampling according to claim 2, characterized in that: The sampling mechanism (6) further comprises a cover plate (66) rotatably connected to the inner wall of the concave tube (62), and another group of the adjusting columns are fixedly connected to the lower surface of the cover plate (66) in an annular array, and the outer surface of the other group of the adjusting columns is slidably engaged with the inner wall of the corresponding groove (67).

4. A soil remediation sampler for stratified soil sampling according to claim 3, characterized in that: The connecting rotating tube (68) is composed of a vertical branch tube and a horizontal branch tube. The outer surface of the vertical branch tube of the connecting rotating tube (68) is rotatably connected to the inner wall of the movable cavity (61) via a bearing, and the outer surface of the upper end of the vertical branch tube extends to the upper surface of the drilling screw (41). The inner surface of the linkage housing (55) is fixedly connected to a connecting block (69). The upper end outer surface of the vertical branch tube of the connecting rotating tube (68) is slidably sleeved with a rotating gear (70) with a connecting tube through another set of keys and the key block. The outer surface of the connecting tube of the rotating gear (70) is rotatably connected to the inner surface of the connecting block (69). The upper surface of the linkage housing (55) is fixedly connected to a rotating motor (71). The outer surface of the output shaft of the rotating motor (71) is fixedly connected to a driving gear (72) via a coupling. The driving gear (72) meshes with the rotating gear (70).

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