Soil exploration sampling device adaptive to sampling of different soil layers

Abstract

The invention relates to the technical field of soil exploration, in particular to a sampling device for soil exploration, which is adaptive to sampling of different soil layers and comprises a bottom supporting plate, a vertical plate and a concave vertical frame, the vertical plate is fixedly mounted on the top surface of the bottom supporting plate and located at the rear of the middle section, and the concave vertical frame is movably connected to the front end of the top surface of the bottom supporting plate through a hinge; a first air cylinder is arranged at the upper position of the center of the side, opposite to the concave vertical frame, of the vertical plate, and the output end of the first air cylinder is fixedly connected with a concave clamping frame through a push rod. On the basis that the sampling device adapts to adjustment of various gradient and terrain requirements, soil samples with different floor heights and orientations in the same area can be independently taken at the same time, so that the diversity of the extracted soil samples is ensured, the condition that the soil samples are confused is reduced, and the sampling efficiency is improved. The soil sampling efficiency is effectively improved; the influence on a soil exploration result is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of soil surveying, and in particular to a soil surveying sampling device suitable for sampling different soil layers. Background Art

[0002] Soil survey is the investigation, exploration and determination of soil properties and conditions. Its main task is to find out the relationship between soil in a watershed or irrigation area and natural conditions such as climate and biology and human activities, to understand the characteristics of various types of soil and ways to improve and utilize them, to propose improvement measures to prevent salinization, swamping and other soil problems, and to provide basic data and scientific basis for irrigation area planning and design and water and soil resource balance analysis. According to patent CN214040734U, a quick sampling device for soil survey is provided. The device is placed vertically on the ground by holding two sets of first handrails, and then the motor is turned on to drive the sampler to rotate via the connecting shaft, and the ground is drilled and sampled. Then, the baffle is removed by pushing the push plate downward to collect the soil in the sampler. However, the operation process of the above-mentioned device is mostly used for vertical sampling on flat ground. If there is a certain slope in the soil sampling area or the vertical sampling is limited, the angle change of the device is more laborious and it is easy to cause the stability of the device to decrease during operation, thereby affecting the soil sampling efficiency; In addition, when the conventional sampling device is in operation, the sampling components are inserted into the soil from shallow to deep, and the soil in the area where the sampling components pass is successively superimposed and merged into the same sampling chamber, which easily causes confusion of soil samples at different depths, and then causes the soil samples taken to be too single, making it difficult to collect and analyze soil samples at different depths and orientations in the same exploration area in a multi-faceted manner, thereby not only reducing the soil sampling efficiency, but also affecting the soil exploration results; In view of the technical defects in this aspect, a solution is now proposed. Summary of the invention

[0003] The purpose of the present invention is to realize that the sampling device can adapt to various slope and terrain requirements, and at the same time, soil samples of different layer heights and orientations in the same area can be separately collected, so as to ensure the diversity of extracted soil samples and reduce the confusion of soil samples, effectively improve the soil sampling efficiency and reduce the impact on soil exploration results.

[0004] The object of the present invention can be achieved through the following technical solutions: a soil survey sampling device suitable for sampling different soil layers, comprising a bottom support plate, a vertical plate and a concave vertical frame, wherein the vertical plate is fixedly mounted on the top surface of the bottom support plate at a position closer to the middle section, and the concave vertical frame is movably connected to the front end of the top surface of the bottom support plate through a hinge, a cylinder 1 is arranged at an upper position of the center of one side of the vertical plate opposite to the concave vertical frame, and the output end of the cylinder 1 is fixedly connected to a concave clamping frame through a push rod, and the inner walls on both sides of the concave clamping frame are hingedly connected to a limit axis 1 at the opening end; Vertical grooves are provided at the middle and upper ends of both sides of the concave vertical frame, and the two groups of limit shafts are respectively clamped in the corresponding vertical grooves. A cylinder 2 is provided on the top inner wall of the concave vertical frame, and the bottom output end of the cylinder 2 is fixedly connected to a sampling barrel through a push rod. A motor is provided at the bottom barrel mouth inside the sampling barrel, and the bottom output end of the motor extends to the outside of the sampling barrel and is provided with a spiral drill barrel.

[0005] Furthermore, the inner wall of the bottom of the concave vertical frame is provided with a limiting cylinder, and the spiral drill cylinder extends into the interior of the limiting cylinder, the bottom end of the limiting cylinder passes through the bottom frame of the concave vertical frame and is connected to the outside, the spiral drill cylinder and the sampling cylinder are both adapted to the interior of the limiting cylinder, and the inner wall of the limiting cylinder is provided with an annular brush.

[0006] Furthermore, a limiting groove is provided at the top position on one side of the sampling tube, and a pressing component is provided in the area near the limiting groove inside the sampling tube. Several groups of rectangular grooves are provided on both side surfaces of the sampling tube, and the rectangular grooves on both sides are staggered up and down. A sampling mechanism is provided inside each group of the rectangular grooves, and the two adjacent groups of sampling mechanisms are arranged in opposite structures.

[0007] Furthermore, the pressing assembly includes a transverse frame, which is fixedly installed inside the sampling barrel and located at the lower end of the limiting groove, and a pressure rod is arranged through the center of the inside of the transverse frame, the pressure rod is located at the front end of several groups of sampling mechanisms, and several groups of discs are arranged at equal distances on the rear end face of the pressure rod and located at the bottom end of the transverse frame, the top end of the pressure rod extends to the same height of the limiting groove and is bent, and the front end face of the pressure rod is located at the center of the bend and fixedly installed with a limiting axis 2, the outside of the limiting axis 2 is movably connected with a push rod, and the push rod is hinged in an inclined state at the middle section of the inside of the limiting groove, the lower end of the push rod extends to the outside of the sampling barrel, and the other end of the push rod is provided with a groove, and the groove is sleeved on the outside of the limiting axis 2.

[0008] Furthermore, the sampling mechanism includes a rectangular long frame, which is fixed and passes through the inside of the rectangular groove, and one end of the rectangular long frame extends to the inner cavity of the sampling tube, and a T-shaped push frame is arranged through the end of the inside of the rectangular long frame away from the opening, and one end of the T-shaped push frame extends to the outside of the rectangular long frame and is inserted into the inside of an insertion frame arranged at the inner wall of the sampling tube away from the rectangular long frame.

[0009] Furthermore, the T-shaped push frame is arranged at the rear end of the pressure rod, and a wedge-shaped stop block is fixed at the center position of one end of the T-shaped push frame close to the pressure rod, and a spring group coil is wound around the outside of the T-shaped push frame between the wedge-shaped stop block and the rectangular length, and each group of discs presses against the top of the inclined surface of the corresponding wedge-shaped stop block.

[0010] Furthermore, the upper and lower inner walls of the rectangular long frame are provided with sliding grooves, and a guide rod is slidably connected between the two groups of sliding grooves and at one end away from the opening of the rectangular long frame, and semicircular material taking columns are respectively provided near the upper and lower positions in the middle section of the guide rod.

[0011] Furthermore, the end of the semicircular material feeding column away from the guide rod is arranged in a conical structure, the upper and lower groups of the semicircular material feeding columns are mirror-symmetrical relative to the center point of the rectangular long frame, the opposite surfaces of the two groups of semicircular material feeding columns are arranged in a plane structure, and one end of both of them slide together and are clamped in the T-shaped push frame, and the centers of the front and rear end faces of the two groups of semicircular material feeding columns are provided with transverse grooves, and inclined grooves are provided on both sides of the transverse grooves.

[0012] Furthermore, vertical rods are provided inside the rectangular long frame near the opening end and at the front and rear ends of the semicircular material feeding column, and round shafts are fixedly installed near the upper and lower positions of the centers of the opposite surfaces of the two groups of vertical rods, and the two groups of round shafts on the same side are respectively clamped in the inclined grooves of corresponding heights.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention appropriately adjusts the angle of the sampling tube according to the terrain conditions, forces the sampling tube to be in a straight line or diagonal opposition with the sampling area, and then uses the second cylinder to drive the sampling tube and the spiral drill tube to settle and insert into the soil layer, and uses the spiral drill tube to drill the soil to reduce the resistance of the sampling tube sinking and taking materials, and when the sampling tube and the spiral drill tube rise, they move relative to the limit tube in turn to facilitate the appropriate cleaning of the mud residue on the outer walls of the two, thereby improving the sampling efficiency of the device; 2. The present invention is provided with a pressing component and a sampling component, which cooperate with the limiting cylinder. The sampling cylinder pulls the pressing component and the sampling component to sink. The pressing rod is pressed by the limiting cylinder to cause the pressing rod and the circular shaft to sink, and the circular shaft presses the wedge-shaped pressing block to force the two semicircular material collection columns of each group of sampling mechanisms to move to the outside of the sampling cylinder. After opening to collect materials and closing to press materials, they are recovered into the material collection cylinder again, and each group of samples is gradually taken out after the material collection cylinder is lifted to the surface. This structure not only realizes the sampling of soil in different layers and different directions in the same area, but also is conducive to observing the diversity of soil samples. At the same time, it reduces the mixing and loss of soil samples, effectively improves the soil sampling efficiency and reduces the impact on soil exploration results. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a side view of the overall structure of the present invention after the angle is adjusted; Figure 3 It is a cross-sectional view of the combination of the sampling tube and the limiting tube of the present invention; Figure 4 It is a three-dimensional schematic diagram of the combination of the sampling mechanism and the local structure of the pressure rod of the present invention; Figure 5 is a side sectional view of the sampling mechanism of the present invention; Figure 6 It is a half-section schematic diagram of a rectangular long frame of the present invention; Figure 7 It is a schematic diagram of the splitting of two groups of semicircular material extraction columns of the present invention.

[0016] In the figure: 1, bottom support plate; 2, vertical plate; 201, cylinder 1; 202, concave clamping frame; 203, limit shaft 1; 3, concave vertical frame; 301, vertical slot; 302, cylinder 2; 303, limit cylinder; 4, sampling cylinder; 401, limit slot; 402, rectangular slot; 5, motor; 6, auger cylinder; 7, pressing assembly; 71, horizontal frame; 72, pressure rod; 73, disc; 74, limit shaft 2; 75, push rod; 76, groove; 8, sampling mechanism; 81, rectangular long frame; 82, T-type push frame; 83, insert frame; 84, wedge-shaped push block; 841, spring assembly coil; 85, slide groove; 86, guide rod; 87, semicircular material taking column; 88, horizontal slot; 89, inclined slot; 810, vertical rod; 811, round shaft. DETAILED DESCRIPTION

[0017] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Example 1: Please refer to Figure 1 - Figure 7 As shown, a soil survey sampling device suitable for sampling different soil layers includes a bottom support plate 1, a vertical plate 2 and a concave vertical frame 3, the vertical plate 2 is fixedly mounted on the top surface of the bottom support plate 1 at a position closer to the middle section, and the concave vertical frame 3 is movably connected to the front end of the top surface of the bottom support plate 1 through a hinge, a cylinder 201 is arranged at an upper center position on one side opposite to the vertical plate 2 and the concave vertical frame 3, and the output end of the cylinder 201 is fixedly connected to a concave clamping frame 202 through a push rod, and the inner walls on both sides of the concave clamping frame 202 are hingedly connected to a limit axis 203 at the opening end; A vertical groove 301 is provided at the middle and upper ends of both sides of the concave vertical frame 3, and two sets of limit shafts 203 are respectively clamped in the corresponding vertical grooves 301. A cylinder 2 302 is provided on the top inner wall of the concave vertical frame 3, and the bottom output end of the cylinder 2 302 is fixedly connected to the sampling tube 4 through a push rod; First, move the device to the soil sampling location, and adjust the inclination angle of the sampling tube 4 appropriately according to the terrain changes. When sampling on flat ground, the device does not need to be adjusted, and the sampling tube 4 can be kept vertically above and below the exploration area; When sampling the slope, the cylinder 201 is started, and the push rod is used to pull the concave clamping frame 202 to move, so that the concave clamping frame 202 pulls the upper frame of the concave vertical frame 3 to move toward the vertical plate 2, and the limit shaft 203 moves in the corresponding vertical groove 301, and the concave vertical frame 3 deflects clockwise until the sampling tube 4 and the exploration area are diagonally distributed, so that the sampling angle adjustment can be adapted to various slopes and terrains, ensuring the stable operation of the device, thereby improving the diversity of soil exploration; A motor 5 is arranged at the bottom end of the sampling tube 4, and the bottom output end of the motor 5 extends to the outside of the sampling tube 4 and is provided with an auger tube 6; a limiting tube 303 is arranged on the bottom inner wall of the concave vertical frame 3, and the auger tube 6 extends to the inside of the limiting tube 303, and the bottom end of the limiting tube 303 passes through the bottom frame of the concave vertical frame 3 and is connected to the outside, the auger tube 6 and the sampling tube 4 are both adapted to the inside of the limiting tube 303, and an annular brush is arranged on the inner wall of the limiting tube 303; After the angle of the sampling tube 4 is determined, the cylinder 2 302 and the motor 5 are started synchronously. The cylinder 2 302 is first used to drive the sampling tube 4 and the spiral drill tube 6 to settle, and the spiral drill tube 6 settles to the surface of the exploration area before the sampling tube 4. At the same time, the motor 5 drives the spiral drill tube 6 to rotate and continuously drill holes inside the exploration area, so that the sampling tube 4 sinks inside the soil layer to perform layered sampling, thereby reducing the sinking resistance of the sampling tube 4. When the sampling tube 4 settles to a certain depth, the motor 5 stops driving; After sampling is completed, the cylinder 2 302 is used again to pull the sampling tube 4 and the auger tube 6 to lift up, and the cylinder body of the sampling tube 4 that contacts the soil layer and the auger tube 6 pass through the inside of the limiting tube 303 in turn, and adaptively rub against the annular brush inside it, which assists in removing the soil on the surface of the sampling tube 4 and the auger tube 6 to a certain extent, so as to avoid affecting the subsequent sampling.

[0019] Example 2: Please refer to Figure 3 and Figure 4As shown, a limiting groove 401 is provided at the top position on one side of the sampling tube 4, and a pressing assembly 7 is provided in the area near the limiting groove 401 inside the sampling tube 4, and the pressing assembly 7 includes a horizontal frame 71, which is fixedly installed inside the sampling tube 4 and located at the lower end of the limiting groove 401, and a pressure rod 72 is provided through the center of the horizontal frame 71, and the pressure rod 72 is located at the front end of a plurality of groups of sampling mechanisms 8, and a plurality of groups of discs 73 are provided at equal distances on the rear end surface of the pressure rod 72 and at the bottom end of the horizontal frame 71; The top of the pressure rod 72 extends to the same height as the limiting groove 401 and is bent, and the front end of the pressure rod 72 is located at the center of the bend and fixedly installed with the limiting shaft 74. The limiting shaft 74 is externally movably connected with a support rod 75, and the support rod 75 is hinged at the middle section of the limiting groove 401 in an inclined shape. The lower end of the support rod 75 extends to the outside of the sampling tube 4, and the other end of the support rod 75 is provided with a groove 76, and the groove 76 is sleeved on the outside of the limiting shaft 74. The sampling tube 4 is in the process of sinking downward, and the pressing assembly 7 moves accordingly. When two-thirds of the sampling tube 4 sinks into the soil layer, the limiting groove 401 keeps approaching the top opening of the limiting tube 303, and the lower end of the rod 75 is gradually pressed by the top frame of the limiting tube 303, causing it to turn counterclockwise, and the higher end of the rod 75 presses the limiting shaft 2 74, forcing the pressing rod 72 to penetrate the horizontal frame 71 and automatically sink to a certain height; See also Figure 3 - Figure 7 As shown, the two sides of the sampling tube 4 are provided with a plurality of groups of rectangular grooves 402, and the rectangular grooves 402 on both sides are arranged in an up-down staggered manner, and a sampling mechanism 8 is arranged inside each group of rectangular grooves 402, and the two groups of sampling mechanisms 8 adjacent to each other are arranged in opposite structures; The sampling mechanism 8 includes a rectangular long frame 81, which is fixedly passed through the rectangular groove 402, and one end of the rectangular long frame 81 extends to the inner cavity of the sampling tube 4, and a T-shaped push frame 82 is passed through the end of the rectangular long frame 81 away from the opening, and one end of the T-shaped push frame 82 extends to the outside of the rectangular long frame 81 and is inserted into the inside of an insertion frame 83 provided at the inner wall of the sampling tube 4 away from the rectangular long frame 81. The T-shaped push frame 82 is arranged at the rear end of the pressure rod 72, and a wedge-shaped stop block 84 is fixed at the center position of one end of the T-shaped push frame 82 close to the pressure rod 72. A spring group coil 841 is wound around the outside of the T-shaped push frame 82 between the wedge-shaped stop block 84 and the rectangular long frame 81, and each group of discs 73 presses against the top of the inclined surface of the corresponding wedge-shaped stop block 84. After the sampling tube 4 settles, the rectangular grooves 402 on both sides thereof are inserted into the soil layer, and the pressure rod 72 and the plurality of groups of discs 73 are forced to settle downward at the same time. Each group of discs 73 presses downward against the inclined surface of the corresponding wedge-shaped block 84, and the T-shaped push frame 82 is continuously pushed toward the inside of the rectangular long frame 81, and the spring group coil 841 is compressed; The upper and lower inner walls of the rectangular long frame 81 are provided with sliding grooves 85, and a guide rod 86 is slidably connected between the two groups of sliding grooves 85 and at one end away from the opening of the rectangular long frame 81, and semicircular material taking columns 87 are respectively provided near the upper and lower positions of the middle section of the guide rod 86, and the ends of the semicircular material taking columns 87 away from the guide rod 86 are arranged in a conical structure, and the upper and lower groups of semicircular material taking columns 87 are mirror-symmetrical relative to the center point of the rectangular long frame 81, and the opposite surfaces of the two groups of semicircular material taking columns 87 are arranged in a plane structure, and one end of the two groups of semicircular material taking columns 87 slide together and are clamped in the T-shaped push frame 82; A transverse groove 88 is provided in the center of the front and rear end surfaces of the two groups of semicircular material-taking columns 87, and an inclined groove 89 is provided on both sides of the transverse groove 88. Vertical rods 810 are provided inside the rectangular long frame 81 near the opening end and at the front and rear ends of the semicircular material-taking columns 87. Round shafts 811 are fixedly installed near the upper and lower positions in the centers of the opposite surfaces of the two groups of vertical rods 810, and the two groups of round shafts 811 on the same side are respectively clamped in the inclined grooves 89 of corresponding heights.

[0020] The T-shaped push frame 82 pushes the two groups of semicircular material taking columns 87 to move outside the rectangular long frame 81, and the end of the guide rod 86 moves along the inside of the slide groove 85. When the two groups of semicircular material taking columns 87 move, they move relative to the two groups of vertical rods 810, and the round shaft 811 first moves linearly along the inclined groove 89 to the inside of the horizontal groove 88, so that the two groups of semicircular material taking columns 87 move toward the outside of the sampling tube 4 and move away from each other until the two groups of semicircular material taking columns 87 are inserted into the soil layer outside the sampling tube 4; The soil fragments in the soil layer are respectively retained on the top plane of the bottom semicircular material collection column 87 and the top curved surface of the top semicircular material collection column 87. Since the top surface of the top semicircular material collection column 87 is a curved surface structure, the soil automatically slides down, and only the soil fragments on the top surface of the bottom semicircular material collection column 87 remain. As the two groups of semicircular material collection columns 87 continue to move outward, and the disc 73 continues to slide along the inside of the transverse groove 88 to another group of inclined grooves 89, the two groups of semicircular material collection columns 87 are close to each other and close to compact the soil sample between them. During the whole material collection process, the two groups of semicircular material collection columns 87 are opened outward to collect materials first, and then closed to compact the samples. This process not only facilitates the separate sampling of soil samples in layers, but also reduces the situation of spilling of sampled soil samples, thereby effectively improving the soil sampling efficiency. It is worth noting that, since the sampling mechanisms 8 are distributed at different heights on both sides of the sampling tube 4, during sampling, the soil taken by each group of sampling mechanisms 8 comes from different directions and heights, and thus the soil samples taken are diverse. After the stratified material collection is completed, the second cylinder 302 drives the sampling tube 4 to rise, the limiting groove 401 keeps moving away from the limiting tube 303, and the lower end of the rod 75 gradually loses the pressure of the top frame of the limiting tube 303 and turns clockwise under the action of the hinge force, and the higher end of the rod 75 pulls the limiting shaft 2 74 in the opposite direction, forcing the pressure rod 72 and the multiple sets of discs 73 to gradually rise, so that the multiple sets of wedge-shaped blocks 84 lose the pressure of the discs 73 and pull the T-shaped push frame 82 and the two sets of semicircular material collection columns 87 to move into the rectangular long frame 81 under the resilience of the spring coil 841; During this recovery process, the two groups of semicircular material taking columns 87 move relative to the vertical rod 810 again, and the second circular axis 811 passes through the inside of the inclined slot 89 and the horizontal slot 88 in turn. After opening and closing, the two groups of semicircular material taking columns 87 clamp the sampled soil and send it into the sampling tube 4, and finally rise to the ground with the sampling tube 4. When taking out the sample later, it is only necessary to lift up one end of the supporting rod 75 and repeat the above sampling steps until the two groups of semicircular material taking columns 87 extend out of the rectangular long frame 81 and then open to take the material. In summary, the sampling mechanism 8 cooperates with the pressing component 7 to not only realize soil sampling of different layers and different directions in the same area, but also facilitates the observation of the diversity of soil samples, while reducing the mixing and loss of soil samples, and effectively improving the soil sampling efficiency.

[0021] When the present invention is used, the device is first moved to the soil sampling location, and the inclination angle of the sampling tube 4 is appropriately adjusted according to the changes in the terrain. When sampling on flat ground, the device does not need to be adjusted. When sampling on sloping ground, the cylinder 1 201 is started, and the concave clamping frame 202 is used to pull the upper frame body of the concave vertical frame 3 toward the vertical plate 2, and the concave vertical frame 3 is deflected clockwise until the sampling tube 4 and the exploration area are diagonally distributed; Next, the air cylinder 2 302 and the motor 5 are started synchronously, and the air cylinder 2 302 is first used to drive the sampling tube 4 and the spiral drill tube 6 to settle, and the spiral drill tube 6 settles to the surface of the exploration area before the sampling tube 4. At the same time, the motor 5 drives the spiral drill tube 6 to rotate and continuously drill holes inside the exploration area, so that the sampling tube 4 sinks inside the soil layer to perform layered sampling. After the sampling tube 4 settles to a certain depth, the motor 5 stops driving; At the same time, the limiting groove 401 approaches the top tube mouth of the limiting tube 303, and the lower end of the rod 75 is gradually pressed by the top frame of the limiting tube 303 to cause it to flip counterclockwise, and the higher end of the rod 75 presses the limiting shaft 74, forcing the pressure rod 72 to penetrate the horizontal frame 71 and automatically sink to a certain height, each set of discs 73 moves downward and presses the inclined surface of the corresponding wedge-shaped block 84, and the T-shaped push frame 82 is continuously pushed into the rectangular long frame 81, and the two sets of semicircular material extraction columns 87 move. The two sets of semicircular material extraction columns 87 move toward the outside of the sampling tube 4 and move away from each other until the two sets of semicircular material extraction columns 87 are inserted into the outer soil layer of the sampling tube 4, and soil fragments accumulate on the top surface of the bottom semicircular material extraction columns 87, and the two sets of semicircular material extraction columns 87 continue to move outward, thereby compacting the soil sample between the two. After the stratified material collection is completed, the second cylinder 302 drives the sampling tube 4 to rise, and the lower end of the rod 75 gradually loses the pressure of the top frame of the limit tube 303 and turns clockwise under the action of the hinge force, and reversely pulls the limit shaft 2 74 upward, forcing the pressure rod 72 and the multiple sets of discs 73 to gradually rise, and the two sets of semicircular material collection columns 87 move into the rectangular long frame 81. During the recovery process, the two sets of semicircular material collection columns 87 move relative to the vertical rod 810 again, and the second circular shaft 811 passes through the inclined slot 89 and the horizontal slot 88 in turn. After opening and closing, the two sets of semicircular material collection columns 87 clamp the sampled soil and send it into the sampling tube 4; Finally, as the sampling tube 4 rises to the ground, just lift one end of the rod 75 upwards and repeat the above sampling steps until the two sets of semicircular material collection columns 87 extend out of the rectangular long frame 81 and open to collect the material. The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A soil survey sampling device suitable for sampling different soil layers, comprising a bottom support plate (1), a vertical plate (2) and a concave vertical frame (3), wherein the vertical plate (2) is fixedly mounted on the top surface of the bottom support plate (1) at a position closer to the middle section, and the concave vertical frame (3) is movably connected to the front end of the top surface of the bottom support plate (1) through a hinge, characterized in that: A cylinder 1 (201) is provided at the upper center position of a side of the vertical plate (2) opposite to the concave vertical frame (3), and the output end of the cylinder 1 (201) is fixedly connected to a concave clamping frame (202) via a push rod, and the inner walls on both sides of the concave clamping frame (202) are hingedly connected to a limiting axis 1 (203) at the opening end; Both sides of the concave vertical frame (3) are provided with vertical grooves (301) at the middle and upper ends, and the two groups of the limiting shafts (203) are respectively clamped in the corresponding vertical grooves (301). The top inner wall of the concave vertical frame (3) is provided with a cylinder (302), and the bottom output end of the cylinder (302) is fixedly connected to a sampling barrel (4) through a push rod. The sampling barrel (4) is provided with a motor (5) at the bottom barrel mouth, and the bottom output end of the motor (5) extends to the outside of the sampling barrel (4) and is provided with a spiral drill barrel (6).

2. A soil survey sampling device suitable for sampling different soil layers according to claim 1, characterized in that: The inner wall at the bottom of the concave vertical frame (3) is provided with a limiting cylinder (303), and the spiral drill cylinder (6) extends into the interior of the limiting cylinder (303); the bottom end of the limiting cylinder (303) passes through the bottom frame of the concave vertical frame (3) and is in communication with the outside; the spiral drill cylinder (6) and the sampling cylinder (4) are both adapted to the interior of the limiting cylinder (303), and the inner wall of the limiting cylinder (303) is provided with an annular brush.

3. A soil survey sampling device suitable for sampling different soil layers according to claim 1, characterized in that: A limiting groove (401) is provided at the top position of one side of the sampling tube (4), and a pressing component (7) is provided in an area near the limiting groove (401) inside the sampling tube (4). A plurality of groups of rectangular grooves (402) are provided on both side surfaces of the sampling tube (4), and the rectangular grooves (402) on both sides are arranged in an up-and-down staggered manner. A sampling mechanism (8) is provided inside each group of the rectangular grooves (402), and two groups of the sampling mechanisms (8) adjacent to each other are arranged in opposite structures.

4. A soil survey sampling device suitable for sampling different soil layers according to claim 3, characterized in that: The pressing assembly (7) comprises a transverse frame (71), the transverse frame (71) being fixedly mounted inside the sampling tube (4) and located at the lower end of the limiting groove (401), and a pressure rod (72) being provided through the center of the interior of the transverse frame (71), the pressure rod (72) being located at the front end of the plurality of groups of sampling mechanisms (8), and a plurality of groups of discs (73) being provided at equal distances on the rear end surface of the pressure rod (72) and located at the bottom end of the transverse frame (71), the top end of the pressure rod (72) extending to the limiting groove (401 ) are at the same height and are in a bent shape, and a limit shaft (74) is fixedly installed on the front end surface of the pressure rod (72) at the center of the bend, and a support rod (75) is movably connected to the outside of the limit shaft (74), and the support rod (75) is hinged in an inclined shape at the middle section of the inner part of the limit groove (401), and the lower end of the support rod (75) extends to the outside of the sampling tube (4), and a groove (76) is formed at the other end of the support rod (75), and the groove (76) is sleeved on the outside of the limit shaft (74).

5. A soil survey sampling device suitable for sampling different soil layers according to claim 3, characterized in that: The sampling mechanism (8) comprises a rectangular long frame (81), the rectangular long frame (81) being fixedly inserted into the rectangular groove (402), and one end of the rectangular long frame (81) extending into the inner cavity of the sampling tube (4), a T-shaped push frame (82) being inserted into the inner end of the rectangular long frame (81) away from the opening, and one end of the T-shaped push frame (82) extending to the outside of the rectangular long frame (81) and plugged into an insert frame (83) provided at an inner wall of the sampling tube (4) away from the rectangular long frame (81).

6. A soil survey sampling device suitable for sampling different soil layers according to claim 5, characterized in that: The T-shaped push frame (82) is arranged at the rear end of the pressure rod (72), and a wedge-shaped stop block (84) is fixed at the center position of one end of the T-shaped push frame (82) close to the pressure rod (72). A spring group coil (841) is wound around the outside of the T-shaped push frame (82) between the wedge-shaped stop block (84) and the rectangular long frame (81), and each group of discs (73) is pressed against the top end of the inclined surface of the corresponding wedge-shaped stop block (84).

7. A soil survey sampling device suitable for sampling different soil layers according to claim 5, characterized in that: The upper and lower inner walls of the rectangular long frame (81) are both provided with sliding grooves (85), and a guide rod (86) is slidably connected to one end of the two sets of sliding grooves (85) away from the opening of the rectangular long frame (81), and semicircular material taking columns (87) are respectively provided near the upper and lower positions of the middle section of the guide rod (86).

8. A soil survey sampling device suitable for sampling different soil layers according to claim 7, characterized in that: The ends of the semicircular material taking columns (87) away from the guide rod (86) are arranged in a conical structure. The upper and lower groups of the semicircular material taking columns (87) are mirror-symmetrical relative to the center point of the rectangular long frame (81). The opposite surfaces of the two groups of the semicircular material taking columns (87) are arranged in a planar structure, and one end of both of them slides together and is clamped inside the T-shaped push frame (82). The centers of the front and rear end surfaces of the two groups of the semicircular material taking columns (87) are both provided with transverse grooves (88), and oblique grooves (89) are both provided on both sides of the transverse grooves (88).

9. A soil survey sampling device suitable for sampling different soil layers according to claim 5, characterized in that: Vertical rods (810) are provided inside the rectangular long frame (81) near the opening end and at the front and rear ends of the semicircular material taking column (87). Round shafts (811) are fixedly installed near the upper and lower positions of the centers of the opposite surfaces of the two groups of the vertical rods (810). The two groups of the round shafts (811) on the same side are respectively clamped inside the inclined grooves (89) of corresponding heights.

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