Gobi desert shallow coverage area soil sampling device

Abstract

The invention relates to a gobi desert shallow coverage area soil sampling device, and belongs to the technical field of geological prospecting, the gobi desert shallow coverage area soil sampling device comprises a top plate, a plurality of cylinders are sequentially stacked at the bottom of the top plate along the vertical direction, and a plurality of first rotating shafts are vertically arranged in annular mounting grooves between two adjacent cylinders at equal intervals in a surrounding manner; the multiple connecting columns are vertically arranged on the top plate at equal intervals in a surrounding mode, the multiple arc-shaped limiting rods are embedded in the annular mounting groove at equal intervals, and the driving mechanism is arranged on the top plate and used for driving the multiple connecting columns to rotate in the same mode; according to the invention, the sampling barrel formed by the plurality of barrels can be used for sampling soil, then the driving mechanism is used for driving the arc-shaped connecting rod to rotate to clamp and fix the soil in the barrels from the side surfaces, the collected soil can be prevented from falling off, the plurality of barrels are separated one by one and then the soil is taken out respectively, and excessive extrusion of the soil is avoided; the position information of the soil in the cylinder is close to the actual depth of the soil layer as much as possible, and the accuracy of geological exploration survey is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of geological exploration, and in particular relates to a soil sampling device for shallow cover areas in a Gobi desert. Background Art

[0002] In the investigation of mineral resources, soil sampling is a very important task. By analyzing the element content and mineral composition in the soil, the distribution of underground mineral resources can be indirectly inferred. When sampling the soil, a sampling tube is generally inserted vertically into the soil, and then the sampling tube is taken out upward to obtain a soil sample. When testing the collected soil samples, it is first necessary to push the collected soil samples out of the sampling tube, and then test the soil samples to conduct geological exploration and investigation. Because the soil in the Gobi desert area is relatively loose, the existing sampling tube has poor stability and will fall downward when the soil sample is taken out upward, resulting in poor soil sampling in the shallow coverage area of ​​the Gobi desert.

[0003] At present, when taking soil samples in shallow cover areas of the Gobi Desert, two movable closing plates are usually set at the bottom of the sampling tube. After the sampling is completed, the closing plates are closed to close the bottom of the sampling tube to prevent the soil sample inside from falling when the sampling tube is taken out upward, thereby improving the effect of soil sampling. However, when testing different soil layers, the test results need to be recorded in correspondence with the depth of the soil layer. Most of the time, the corresponding depth is obtained based on the position of the soil sample in the sampling tube.

[0004] When taking out the soil sample from the sampling tube, it is necessary to prevent the soil sample from falling around and causing the position information to change. The sampling tube can only be placed horizontally and then the soil sample is slowly pushed out from one end of the sampling tube. Since the thrust directly acts on one end of the soil sample in the sampling tube, the soil sample in the sampling tube will be compressed, causing the position information of the soil sample in the sampling tube to differ from the actual depth of the soil layer, resulting in low accuracy of geological exploration surveys. Summary of the invention

[0005] In view of this, the present invention provides a soil sampling device for shallow coverage areas in the Gobi desert to address the deficiencies in the prior art. The present invention can make the position information of the soil in the cylinder as close as possible to the actual depth of the soil layer, thereby improving the accuracy of geological exploration and investigation.

[0006] The technical solution of the present invention is: a soil sampling device for shallow cover areas in Gobi deserts, comprising a top plate, a plurality of cylinders stacked in sequence on the bottom of the top plate in a vertical direction, the plurality of cylinders are coaxially arranged with each other, adjacent cylinders are detachably connected, the uppermost cylinder is detachably connected with the top plate to form a sampling bucket, first countersunk holes are respectively provided on the upper and lower end surfaces of the cylinders, the first countersunk holes are coaxially arranged with the cylinders, two first countersunk holes on the end surfaces of two adjacent cylinders form an annular mounting groove, a plurality of first rotating shafts are evenly spaced around the annular mounting grooves between two adjacent cylinders, the first rotating shafts are rotatably connected with the cylinders, and a plurality of connecting columns are evenly spaced. The distance is vertically arranged on the top plate, the connecting column is rotatably connected to the top plate, the cross-section of the connecting column is a regular polygon, the connecting column passes through the cylinder and the first rotating shaft in sequence, the connecting column is rotatably connected to the cylinder, the connecting column is cooperatively connected to the first rotating shaft, a plurality of arc limit rods are equally spaced and embedded in the annular mounting groove, the arc limit rods are located between two adjacent first rotating shafts, and one end of the plurality of arc limit rods spaced in a clockwise or counterclockwise direction is fixedly connected to the first rotating shaft in a one-to-one correspondence, the driving mechanism is arranged on the top plate, and the output end of the driving mechanism is connected to a plurality of connecting columns, so as to realize driving the plurality of connecting columns to rotate in the same manner.

[0007] Preferably, the driving mechanism includes a second rotating shaft, which is vertically arranged on the upper side of the top plate, coaxial with the cylinder, and rotatably connected to the top plate. A transmission mechanism is provided on the top plate, and the input end of the transmission mechanism is connected to the second rotating shaft, and the output end thereof is connected to multiple connecting columns.

[0008] Preferably, the transmission mechanism includes a first gear, a cavity is opened inside the top plate, one end of the second rotating shaft extends into the cavity, the second rotating shaft is rotatably connected to the bottom inner wall of the cavity, the first gear sleeve is fixed on the side of the second rotating shaft located inside the cavity, the cavity is located on the outside of the first gear and a plurality of second gears are arranged around it at equal intervals, the second gear is meshed and connected to the first gear, the connecting column passes through the second gear and is connected to it, and a hand wheel is fixed to the end of the second rotating shaft away from the first gear.

[0009] Preferably, an inner hexagonal tube is passed through the second gear and fixedly connected thereto, the inner hexagonal tube is coaxial with the second gear, both ends of the inner hexagonal tube are rotatably connected to the inner wall of the cavity, and the connecting column passes through the inner hexagonal tube and is cooperatively connected thereto.

[0010] Preferably, a first through hole is vertically opened on the first rotating shaft and is coaxial with the first through hole, the cross-section of the first through hole is a regular polygon, the connecting column passes through the first through hole and is cooperatively connected to the first through hole, a plurality of second countersunk holes are vertically opened at equal intervals around the first countersunk hole at the top of the cylinder, a connecting tube is vertically fixedly provided at the bottom of the first rotating shaft and is coaxial with the first countersunk hole, the connecting tube is embedded in the second countersunk hole and is rotatably connected to the first rotating shaft, a second through hole is vertically opened on the side of the cylinder located at the second countersunk hole away from the first rotating shaft, the second through hole is coaxially arranged with the second countersunk hole, the connecting column passes through the second through hole and is rotatably connected to the first countersunk hole.

[0011] Preferably, one end of the connecting column away from the cylinder extends out of the top plate and is fixed with a limit block. The connecting column is located between the limit block and the top plate and is sleeved with a spring. One end of the spring is connected to the limit block and the other end is connected to the top plate. The other end of the connecting column extends to the first countersunk hole at the bottom of the lowermost cylinder. One end of the connecting column away from the limit block is sleeved with a limit piece and is threadedly connected to it.

[0012] Preferably, an annular base is horizontally provided directly below the top plate, and two internally threaded tubes are symmetrically and vertically provided on the outer side of the top plate. The internally threaded tubes are connected to the top plate, and a screw is passed through the internally threaded tubes and is threadably connected thereto, one end of the screw is rotatably connected to the annular base, and a first motor is fixed on the annular base, and the output shaft of the first motor is fixedly connected to the screw.

[0013] Preferably, an annular groove is opened on the outer side of the top plate and is coaxial with the top plate, two sliders are embedded in the annular groove and are slidably connected to the annular groove, a cross bar is horizontally provided between the slider and the internal threaded tube, one end of the cross bar is fixedly connected to the slider, and the other end is fixedly connected to the internal threaded tube.

[0014] Preferably, an annular gear ring is horizontally fixed to the bottom of the top plate and is coaxial therewith, a second motor is horizontally fixed to the lower side of the cross bar, a third gear is fixedly sleeved on the output shaft of the second motor, and the third gear is meshingly connected to the annular gear ring.

[0015] Compared with the prior art, the present invention provides a soil sampling device for shallow coverage areas in a Gobi desert. Through the cooperation of a top plate, a first countersunk hole on a cylinder, a first rotating shaft, a connecting column and an arc-shaped connecting rod, a sampling barrel composed of a plurality of cylinders can be used for soil sampling. After sampling, the arc-shaped connecting rod is driven to rotate by a driving mechanism to clamp and fix the soil in the cylinder from the side, thereby preventing the collected soil from falling off. During detection, the plurality of cylinders are separated one by one and the soil is taken out separately, thereby avoiding excessive squeezing of the soil, making the position information of the soil in the cylinder as close as possible to the actual depth of the soil layer, thereby improving the accuracy of geological exploration and investigation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a front view of the sampling device of the present invention;

[0017] Figure 2 is a top view of the sampling device of the present invention;

[0018] Figure 3 The present invention Figure 1 AA section view in;

[0019] Figure 4 The present invention Figure 2 BB section view in;

[0020] Figure 5 The present invention Figure 4 The enlarged schematic diagram of point C in FIG.

[0021] Figure 6 The present invention Figure 4 The enlarged schematic diagram of point D in FIG. DETAILED DESCRIPTION

[0022] The present invention provides a soil sampling device for shallow cover areas in the Gobi desert. Figures 1 to 6 The present invention is described with reference to the structural schematic diagram of FIG.

[0023] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the technical solutions of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] When sampling soil, a sampling tube is generally inserted vertically into the soil, and then the sampling tube is taken out upward to obtain a soil sample. When testing the collected soil sample, the collected soil sample first needs to be pushed out of the sampling tube, and then the soil sample is tested, so as to conduct geological exploration and investigation. Since the soil in the Gobi desert area is relatively loose, the soil in the existing sampling tube is unstable and will fall downward during the upward removal process when collecting soil samples, resulting in poor soil sampling effect in the shallow coverage area of ​​the Gobi desert.

[0025] At present, when taking soil samples in shallow cover areas of the Gobi Desert, two movable closing plates are usually set at the bottom of the sampling tube. After the sampling is completed, the closing plates are closed to close the bottom of the sampling tube to prevent the soil sample inside from falling when the sampling tube is taken out upward, thereby improving the effect of soil sampling. However, when testing different soil layers, the test results need to be recorded in correspondence with the depth of the soil layer. Most of the time, the corresponding depth is obtained based on the position of the soil sample in the sampling tube.

[0026] When taking out the soil sample from the sampling tube, it is necessary to prevent the soil sample from falling around and causing the position information to change. The sampling tube can only be placed horizontally and then the soil sample is slowly pushed out from one end of the sampling tube. Since the thrust directly acts on one end of the soil sample in the sampling tube, the soil sample in the sampling tube will be compressed, and the position information of the soil in the cylinder will be as close to the actual depth of the soil layer as possible, resulting in low accuracy of geological exploration surveys.

[0027] Based on the above problems, an embodiment of the present invention provides a soil sampling device for shallow coverage areas in a Gobi desert. Through the cooperation of a top plate, a first countersunk hole on a cylinder, a first rotating shaft, a connecting column and an arc-shaped connecting rod, a sampling barrel composed of multiple cylinders can be used for soil sampling. After sampling, the arc-shaped connecting rod is driven to rotate by a driving mechanism to clamp and fix the soil in the cylinder from the side, which can prevent the collected soil from falling off. During detection, the multiple cylinders are separated one by one and the soil is taken out separately, which can avoid excessive squeezing of the soil, so that the position information of the soil in the cylinder is consistent with the actual depth of the soil layer, thereby improving the accuracy of geological exploration and investigation. The soil sampling equipment of the present invention is easy to use, accurate in information, and highly practical, and is worthy of promotion.

[0028] Reference Figure 1 , Figure 1 It is a front view of the sampling device of this embodiment, as shown in Figure 1 As shown, a soil sampling device for shallow cover areas in a Gobi desert comprises a top plate 1, a plurality of cylinders 2 are stacked in sequence on the bottom of the top plate 1 in a vertical direction, the plurality of cylinders 2 are coaxially arranged with each other, adjacent cylinders 2 are detachably connected, the uppermost cylinder 2 is detachably connected with the top plate 1 to form a sampling bucket, first countersunk holes 3 are respectively provided on the upper and lower end surfaces of the cylinder 2, the first countersunk holes 3 are coaxially arranged with the cylinder 2, two first countersunk holes 3 on the end surfaces of two adjacent cylinders 2 form an annular mounting groove, a plurality of first rotating shafts 4 are evenly spaced around the annular mounting groove between two adjacent cylinders 2, the first rotating shaft 4 is rotatably connected with the cylinder 2, and a plurality of connecting columns 5 are evenly spaced around the vertical It is directly arranged on the top plate 1, the connecting column 5 is rotatably connected to the top plate 1, the cross-section of the connecting column 5 is a regular polygon, the connecting column 5 passes through the cylinder 2 and the first rotating shaft 4 in sequence, the connecting column 5 is rotatably connected to the cylinder 2, the connecting column 5 is cooperatively connected to the first rotating shaft 4, a plurality of arc-shaped limit rods 6 are equally spaced and embedded in the annular mounting groove, the arc-shaped limit rod 6 is located between two adjacent first rotating shafts 4, and a plurality of arc-shaped limit rods 6 are fixedly connected to the first rotating shaft 4 one by one at one end spaced apart in a clockwise or counterclockwise direction, a driving mechanism is arranged on the top plate 1, and an output end of the driving mechanism is connected to a plurality of connecting columns 5, so as to realize driving a plurality of connecting columns 5 to rotate in the same manner.

[0029] Reference Figure 4 , Figure 4 BB is a cross-sectional view of the sampling device of this embodiment, as shown in Figure 4As shown, as a further optimization scheme, the driving mechanism in this embodiment includes a second rotating shaft 21, the second rotating shaft 21 is vertically arranged on the upper side of the top plate 1, the second rotating shaft 21 is coaxial with the cylinder 2, the second rotating shaft 21 is rotatably connected to the top plate 1, and a transmission mechanism is provided on the top plate 1, the input end of the transmission mechanism is connected to the second rotating shaft 21, and the output end thereof is connected to a plurality of connecting columns 5.

[0030] This embodiment uses the second rotating shaft 21 in conjunction with the transmission mechanism to drive multiple connecting columns 5 to rotate in the same manner, so that the arc-shaped connecting rods on the inner wall of the cylinder can clamp and fix the soil at the same time, further improving the stability of the soil during sampling.

[0031] In this embodiment, a specific structure of the transmission mechanism is given, which includes a first gear 31, a cavity 32 is opened inside the top plate 1, one end of the second rotating shaft 21 extends into the cavity 32, the second rotating shaft 21 is rotatably connected to the bottom inner wall of the cavity 32, the first gear 31 is fixed on the side of the second rotating shaft 21 located inside the cavity 32, the cavity 32 is located on the outside of the first gear 31 and is surrounded by a plurality of second gears 33 at equal intervals, the second gear 33 is meshed and connected to the first gear 31, the connecting column 5 passes through the second gear 33 and is connected to it, and a hand wheel 34 is fixed on the end of the second rotating shaft 21 away from the first gear 31.

[0032] In this embodiment, the first gear, cavity, second gear and hand wheel of the transmission mechanism are used in combination, so that the operator can manually rotate the second rotating shaft, and then use the engagement of the first and second gears to drive multiple first rotating shafts to rotate synchronously, so that the arc-shaped connecting rod on the inner wall of the cylinder can clamp and fix the soil at the same time, thereby improving ease of use.

[0033] Reference Figure 6 , Figure 6 This is an enlarged schematic diagram of the sampling device at D in this embodiment, as shown in Figure 6 As shown, as a further optimization scheme, in this embodiment, an inner hexagonal tube 41 is passed through the second gear 33 and fixedly connected thereto, the inner hexagonal tube 41 is coaxial with the second gear 33, both ends of the inner hexagonal tube 41 are rotatably connected to the inner wall of the cavity 32, and the connecting column 5 passes through the inner hexagonal tube 41 and is cooperatively connected thereto.

[0034] In order to further improve the flexibility of use, the number of cylinders can be flexibly adjusted according to the sampling depth through the use of limit blocks, springs and limit members. In addition, the springs enable multiple cylinders to be tightly connected.

[0035] Reference Figure 3 and Figure 5 , Figure 3 AA is a cross-sectional view of the sampling device of this embodiment, Figure 5 This is an enlarged schematic diagram of the sampling device at C in this embodiment, as shown in Figure 3 , 5 As shown, as a further optimization scheme, in this embodiment, a first through hole 51 is vertically opened on the first rotating shaft 4 and is coaxial with it, and the cross section of the first through hole 51 is a regular polygon. The connecting column 5 passes through the first through hole 51 and is connected with it. The cylinder 2 is located on the top of the first countersunk hole 3 and is vertically opened with multiple second countersunk holes 52 at equal intervals. The bottom of the first rotating shaft 4 is vertically fixed with a connecting pipe 53 and is coaxial with it. The connecting pipe 53 is embedded in the second countersunk hole 52 and is rotatably connected with it. The cylinder 2 is located on the side of the second countersunk hole 52 away from the first rotating shaft 4. The second through hole 54 is coaxially arranged with the second countersunk hole 52, and the connecting column 5 passes through the second through hole 54 and is rotatably connected with it. Through the cooperation of the first through hole on the first rotating shaft, the second countersunk hole on the cylinder, the connecting pipe and the second through hole, the first rotating shaft can be rotatably connected with the second countersunk hole on the cylinder through the connecting pipe, and at the same time, the connecting column rotates to drive the multiple first rotating shafts to rotate.

[0036] As a further optimization scheme, in this embodiment, one end of the connecting column 5 away from the cylinder 2 extends out of the top plate 1 and is fixed with a limit block 61. The connecting column 5 is located between the limit block 61 and the top plate 1 and is sleeved with a spring 62. One end of the spring 62 is connected to the limit block 61, and the other end is connected to the top plate 1. The other end of the connecting column 5 extends to the first countersunk hole 3 at the bottom of the lowermost cylinder 2. One end of the connecting column 5 away from the limit block 61 is sleeved with a limit piece 63 and is threadedly connected to it. A thrust bearing can be arranged between the limit piece 63 and the cylinder so that the limit piece 63 is rotatably connected to the cylinder.

[0037] Reference Figure 2 , Figure 2 It is a front view of the sampling device of this embodiment, as shown in Figure 2 As shown, as a further optimization scheme, in this embodiment, an annular base 71 is horizontally provided directly below the top plate 1, and two internally threaded tubes 72 are symmetrically and vertically provided on the outer side of the top plate 1, the internally threaded tube 72 is connected to the top plate 1, a screw 73 is passed through the internally threaded tube 72 and is threadedly connected thereto, one end of the screw 73 is rotatably connected to the annular base 71, a first motor 74 is fixedly provided on the annular base 71, an output shaft of the first motor 74 is fixedly connected to the screw 73, the first motor 74 is electrically connected to an external controller, and the first motor 74 is started and stopped and the output power is adjusted by the external controller.

[0038] In this embodiment, the annular base, the internal threaded tube, the screw and the first motor are used together, so that the first motor can drive the screw to rotate, so that the internal threaded tube and the top plate move downward, and then the top plate drives the cylinder to move downward for sampling.

[0039] As a further optimization scheme, in this embodiment, an annular groove 81 is opened on the outer side of the top plate 1 and is coaxial with the annular groove 81, two sliders 82 are embedded in the annular groove 81 and are slidably connected with the annular groove 81, and a cross bar 83 is horizontally provided between the slider 82 and the internal threaded tube 72, one end of the cross bar 83 is fixedly connected to the slider 82, and the other end is fixedly connected to the internal threaded tube 72.

[0040] In this embodiment, the annular sink is used in conjunction with the slider and the cross bar, so that the top plate and the cylinder can rotate on the annular base, so that the cylinder can move downward to complete the sampling. The top plate is rotated to disconnect the soil inside the cylinder, making it convenient to take out the soil sample.

[0041] As a further optimization scheme, in this embodiment, an annular gear ring 91 is horizontally fixed to the bottom of the top plate 1 and is coaxial therewith, a second motor 92 is horizontally fixed to the lower side of the cross bar 83, a third gear 93 is fixedly mounted on the output shaft of the second motor 92, and the third gear 93 is meshingly connected to the annular gear ring 91.

[0042] In this embodiment, the second motor and gears are used together to enable the second motor to drive the gears to rotate, and then the top plate drives the cylinder to rotate, so that the cylinder can be rotated downward for sampling, thereby increasing the speed of the cylinder moving downward. The second motor 92 is electrically connected to the external controller, and the external controller is used to start and stop the second motor 92 and adjust the output power.

[0043] In the process of geological sampling, when it is necessary to sample the soil, first, according to the pre-designed sampling depth, a corresponding number of cylinders are selected to sequentially pass the connecting column through the second through hole on the cylinder, the first through hole on the first rotating shaft, and the connecting pipe, and a limit piece is installed on the connecting column on the lower side of the bottom cylinder to form a sampling barrel. The multiple cylinders are numbered from top to bottom to facilitate sampling and obtain the depth information of the soil layer according to the position information of the cylinder. After moving the device to the sampling position, the operators stand on both sides of the annular base to prevent the device from shaking during sampling. The first motor is started to rotate through an external controller, and the first motor drives the screw to rotate, so that the internal threaded tube and the top plate move downward, and then the top plate drives the cylinder to move downward. When the bottom cylinder is close to the ground, the second motor is driven by the external controller, and the second motor drives the gear to rotate, and then The top plate drives the cylinder to rotate, so that the cylinder is rotated downward for sampling. When the lower side of the top plate contacts the ground, the sampling is completed. The operator stops the second motor through the external controller and makes the first motor rotate in the opposite direction to move the cylinder upward. After the height between the bottom cylinder and the ground is greater than the sampling depth, the limit piece on the connecting column is removed. When multiple people lift the sampling barrel and move it downward to separate it from the connecting rod, the cylinder is moved horizontally one by one to save the soil inside the cylinder separately. When sampling the soil, the soil can be gently pushed out from the inside of the cylinder to avoid excessive squeezing of the soil, so as to make the position information of the soil in the cylinder as close as possible to the actual depth of the soil layer. After use, the arc limit rod and the first rotating shaft on each cylinder can be disassembled for cleaning, and then reinstalled to avoid corrosion of the device by substances in the soil and increase its service life.

[0044] The above disclosure is only a preferred specific embodiment of the present invention, but the embodiments of the present invention are not limited thereto, and any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A Gobi desert shallow cover area soil sampling device, comprising a top plate (1), characterized in that: Also includes: A plurality of cylinders (2) are stacked in sequence at the bottom of the top plate (1) in a vertical direction, the plurality of cylinders (2) are coaxially arranged with each other, adjacent cylinders (2) are detachably connected, the uppermost cylinder (2) is detachably connected to the top plate (1) to form a sampling bucket, first countersunk holes (3) are respectively provided on the upper and lower end surfaces of the cylinder (2), the first countersunk holes (3) are coaxially arranged with the cylinder (2), and the two first countersunk holes (3) on the end surfaces of two adjacent cylinders (2) form an annular mounting groove; A plurality of first rotating shafts (4) are arranged vertically and equidistantly in the annular mounting groove between two adjacent cylinders (2), wherein the first rotating shafts (4) are rotatably connected to the cylinders (2); A plurality of connecting columns (5) are vertically arranged on the top plate (1) at equal intervals, the connecting columns (5) are rotatably connected to the top plate (1), the cross section of the connecting columns (5) is a regular polygon, the connecting columns (5) sequentially pass through the cylinder (2) and the first rotating shaft (4), the connecting columns (5) are rotatably connected to the cylinder (2), and the connecting columns (5) are cooperatively connected to the first rotating shaft (4); A plurality of arc-shaped limiting rods (6) are embedded in the annular mounting groove at equal intervals, the arc-shaped limiting rods (6) are located between two adjacent first rotating shafts (4), and one end of the plurality of arc-shaped limiting rods (6) spaced apart in a clockwise or counterclockwise direction is fixedly connected to the first rotating shaft (4) in a one-to-one correspondence; A driving mechanism is arranged on the top plate (1), and an output end of the driving mechanism is connected to the plurality of connecting pillars (5) so as to drive the plurality of connecting pillars (5) to rotate in the same manner.

2. The Gobi desert shallow cover area soil sampling device according to claim 1, characterized in that: The driving mechanism comprises a second rotating shaft (21), the second rotating shaft (21) is vertically arranged on the upper side of the top plate (1), the second rotating shaft (21) is coaxial with the cylinder (2), the second rotating shaft (21) is rotatably connected to the top plate (1), and a transmission mechanism is provided on the top plate (1), the input end of the transmission mechanism is connected to the second rotating shaft (21), and the output end thereof is connected to the plurality of connecting columns (5).

3. The Gobi desert shallow cover area soil sampling device according to claim 2, characterized in that: The transmission mechanism comprises a first gear (31), a cavity (32) is provided inside the top plate (1), one end of the second rotating shaft (21) extends into the cavity (32), the second rotating shaft (21) is rotatably connected to the bottom inner wall of the cavity (32), the first gear (31) is sleeved and fixed on one side of the second rotating shaft (21) located inside the cavity (32), a plurality of second gears (33) are arranged around the cavity (32) at equal intervals outside the first gear (31), the second gear (33) is meshed and connected to the first gear (31), the connecting column (5) passes through the second gear (33) and is connected thereto, and a hand wheel (34) is fixedly provided at one end of the second rotating shaft (21) away from the first gear (31).

4. The Gobi desert shallow cover area soil sampling device according to claim 3, characterized in that: An inner hexagonal tube (41) is passed through the second gear (33) and is fixedly connected thereto; the inner hexagonal tube (41) is coaxial with the second gear (33); both ends of the inner hexagonal tube (41) are rotatably connected to the inner wall of the cavity (32); and the connecting column (5) passes through the inner hexagonal tube (41) and is cooperatively connected thereto.

5. The Gobi desert shallow cover area soil sampling device according to claim 1, characterized in that: A first through hole (51) is vertically provided on the first rotating shaft (4) and is coaxial therewith. The cross section of the first through hole (51) is a regular polygon. The connecting column (5) passes through the first through hole (51) and is cooperatively connected therewith. A plurality of second countersunk holes (52) are vertically provided around the first countersunk hole (3) at the top of the cylinder (2) at equal intervals. A connecting pipe (53) is vertically fixedly provided on the bottom of the first rotating shaft (4) and is coaxial therewith. The connecting pipe (53) is embedded in the second countersunk hole (52) and is rotatably connected therewith. A second through hole (54) is vertically provided on the side of the cylinder (2) located on the second countersunk hole (52) away from the first rotating shaft (4). The second through hole (54) is coaxially arranged with the second countersunk hole (52). The connecting column (5) passes through the second through hole (54) and is rotatably connected therewith.

6. The Gobi desert shallow cover area soil sampling device according to claim 1, characterized in that: One end of the connecting column (5) away from the cylinder (2) extends out of the top plate (1) and is fixed with a limit block (61); the connecting column (5) is located between the limit block (61) and the top plate (1) and is sleeved with a spring (62); one end of the spring (62) is connected to the limit block (61), and the other end is connected to the top plate (1); the other end of the connecting column (5) extends to the first countersunk hole (3) at the bottom of the cylinder (2) at the lowermost side; the end of the connecting column (5) away from the limit block (61) is sleeved with a limit piece (63) and is threadedly connected thereto.

7. The Gobi desert shallow cover area soil sampling device according to claim 1, characterized in that: An annular base (71) is horizontally arranged directly below the top plate (1), and two internally threaded tubes (72) are symmetrically and vertically arranged on the outer side of the top plate (1). The internally threaded tubes (72) are connected to the top plate (1), and a screw rod (73) is passed through the internally threaded tube (72) and is threadably connected thereto, and one end of the screw rod (73) is rotatably connected to the annular base (71), and a first motor (74) is fixedly arranged on the annular base (71), and an output shaft of the first motor (74) is fixedly connected to the screw rod (73).

8. The Gobi desert shallow cover area soil sampling device according to claim 7, characterized in that: An annular recessed groove (81) is provided on the outer side of the top plate (1) and is coaxial with the top plate. Two sliders (82) are embedded in the annular recessed groove (81) and are slidably connected thereto. A cross bar (83) is horizontally provided between the sliders (82) and the internally threaded tube (72). One end of the cross bar (83) is fixedly connected to the sliders (82), and the other end is fixedly connected to the internally threaded tube (72).

9. The Gobi desert shallow cover area soil sampling device according to claim 8, characterized in that: An annular gear ring (91) is fixedly disposed horizontally at the bottom of the top plate (1) and is coaxial therewith, a second motor (92) is fixedly disposed horizontally at the lower side of the cross bar (83), a third gear (93) is fixedly mounted on the output shaft of the second motor (92), and the third gear (93) is meshingly connected with the annular gear ring (91).

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