A soil sampling device for sampling deep soil

Abstract

The present invention discloses a soil sampling device for deep soil sampling, which relates to the technical field of soil sampling devices, and includes a drill pipe assembly and an output motor. A hollow card box is fixed to the top of the inner wall of the first drill pipe, and the top end of the second drill pipe is inserted with a plug shaft through an insertion column. For this soil sampling device for deep soil sampling, the electric telescopic rod and the output motor are used to drive the drill pipe assembly to drill into the soil. When the first drill pipe is about to be submerged in the soil, through the rotation of the output motor and the telescoping of the drill pipe assembly, the second drill pipe is pulled out and locked by the lower card box and the hollow card box, thereby automatically extending the length of the drill pipe. Thus, there is no need for sampling personnel to frequently disassemble the motor and assemble and splice the drill pipe, so as to realize automatic drilling operation, and the part of the drill pipe that has been pulled out can be collected through automatic reverse operation to automatically shorten the length of the entire drill pipe, so that there is no need for personnel to disassemble the drill pipe after sampling, thereby greatly reducing the workload of the sampling personnel.

Description

Technical Field

[0001] The invention relates to the technical field of soil sampling devices, in particular to a soil sampling device for sampling deep soil. Background Art

[0002] The soil sampling device is a device used to sample soil layers of different depths. In order to facilitate the sampling personnel to carry it with them and sample deep soil at the same time, the device structure is generally simplified. The simplified device structure includes a motor with a handle, several drill rods, a drill bit, and a sampling ring. When sampling deep soil, the motor is used to drill a section of the drill rod into the soil, and then the motor is separated from the drill rod, and a new drill rod is manually installed on the old drill rod. After that, the motor is connected to the top of the new drill rod, and then the above operation is repeated until the drill bit reaches the preset sampling depth.

[0003] In order to sample deep soil, the existing portable soil sampling device carries multiple drill rods. However, during sampling, the motor needs to be manually disassembled and assembled, and the drill rods need to be spliced so that the overall length of the drill rods can be adapted to the depth of the drill bit as the drill bit sinks. This results in a heavy manual burden during sampling.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a soil sampling device for sampling deep soil is proposed. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides a soil sampling device for sampling deep soil, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a soil sampling device for deep soil sampling, including a drill rod assembly and an output motor, the drill rod assembly including a first drill rod, a lower card box, a first penetration hole, a hollow card box, a second penetration hole, a second drill rod and a penetration clamp, a lower card box is fixed to the bottom of the inner wall of the first drill rod, and the upper surface of the lower card box is provided with a first penetration hole, a hollow card box is fixed to the top of the inner wall of the first drill rod, and the lower surface of the hollow card box is provided with a second penetration hole, a second drill rod is penetrated inside the hollow card box, and a penetration clamp is fixed to the bottom end of the second drill rod, a plug-in shaft is inserted at the top of the second drill rod through a plug column, and the top of the plug-in shaft is connected to the output motor.

[0007] Furthermore, the outer structural dimensions of the penetration clamp are matched with the inner structural dimensions of the first penetration hole and the second penetration hole, and the penetration clamp is slidably connected to the hollow card box through the second drill rod.

[0008] Further, the number of the second drill pipes is at least one. When the number of the second drill pipes is one, it is a solid column. When the number of the second drill pipes is more than one, they are arranged in a nested doll pattern inside, and the structures of the second drill pipes except the innermost one are the same as that of the first drill pipe.

[0009] Further, the drill pipe assembly further includes a groove and a torsion spring shaft. The inner wall of the first drill pipe is provided with a groove, and the torsion spring shaft is distributed inside the groove.

[0010] Further, the drill pipe assembly further includes an inner support column. The outer wall of the torsion spring shaft is fixed with an inner support column.

[0011] Further, the length of the inner support column is adapted to the inner diameter of the first drill pipe, and the inner support columns are distributed in a staggered manner.

[0012] Further, an electric support bracket assembly is arranged at the top of the output motor. The electric support bracket assembly includes a support plate and adjustable legs. The adjustable legs are arranged on the outside of the support plate.

[0013] Further, the electric support bracket assembly further includes an electric telescopic rod. The electric telescopic rod is fixedly arranged through the surface of the support plate, and the bottom of the electric telescopic rod is fixedly connected with the top of the output motor.

[0014] Further, a sampling drill bit assembly is fixed at the bottom of the first drill pipe. The sampling drill bit assembly includes a pipe body, an electric push rod and a drill bit body. The electric push rod is fixed at the top of the inner wall of the pipe body, and the bottom of the electric push rod is connected with the drill bit body.

[0015] Further, the sampling drill bit assembly further includes a sampling ring. The sampling ring is threadedly connected to the bottom of the outer wall of the pipe body, and the drill bit body passes through the inside of the sampling ring.

[0016] The present invention provides a soil sampling device for deep soil sampling, which has the following beneficial effects:

[0017] The soil sampling device for deep soil sampling uses the electric telescopic rod and the output motor to drive the drill pipe assembly to drill into the soil. When the first drill pipe is about to be immersed in the soil, through the rotation of the output motor and the telescoping of the drill pipe assembly, the second drill pipe is pulled out and locked by the lower clamping box and the hollow clamping box, thereby automatically extending the length of the drill pipe. Thus, it is not necessary for the sampling personnel to frequently disassemble the motor and assemble and splice the drill pipes, so as to realize automatic drilling operation, and the part of the drill pipe that has been pulled out can be collected through automatic reverse operation to automatically shorten the length of the entire drill pipe, so that it is not necessary for the personnel to disassemble the drill pipe after sampling, thereby greatly reducing the work burden of the sampling personnel.

[0018] For the soil sampling device for deep soil sampling, as the second drill pipe is withdrawn, the inside of the first drill pipe is hollow. At this time, the outer wall of the inner support column rotates out due to the elastic action of the torsion spring shaft because it loses the force, so that the end of the inner support column abuts against the opposite inner wall of the first drill pipe, and the inner support columns are distributed in a staggered manner. Thus, the inside of the first drill pipe is supported from different directions, so that external support points are evenly generated at each part of the inner wall of the first drill pipe, thereby enhancing the pressure-bearing capacity of the first drill pipe. And as the second drill pipe retracts, the outer wall of the inner support column is automatically reset under force and will not hinder the telescopic movement of the second drill pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. is a schematic structural view during sampling of a soil sampling device for deep soil sampling according to the present invention;

[0020] Figure 2 FIG. is a schematic structural view during carrying of a soil sampling device for deep soil sampling according to the present invention;

[0021] Figure 3 FIG. is a schematic structural view of the inside of the first drill pipe of a soil sampling device for deep soil sampling according to the present invention;

[0022] Figure 4 FIG. is a schematic exploded view of the segmented first drill pipe of a soil sampling device for deep soil sampling according to the present invention;

[0023] Figure 5 FIG. is a schematic sectional view of the pipe body of a soil sampling device for deep soil sampling according to the present invention.

[0024] In the figure: 1. Drill pipe assembly; 101. First drill pipe; 102. Lower cartridge; 103. First through hole; 104. Hollowed-out cartridge; 105. Second through hole; 106. Second drill pipe; 107. Through card member; 108. Groove; 109. Torsion spring shaft; 110. Inner support column; 2. Insertion shaft; 3. Output motor; 4. Electric support assembly; 401. Support plate; 402. Adjustable support leg; 403. Electric telescopic rod; 5. Sampling drill bit assembly; 501. Pipe body; 502. Electric push rod; 503. Drill bit body; 504. Sampling ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following further describes in detail the embodiments of the present invention in conjunction with the drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0026] As Figures 1-5As shown in the figure, the present invention provides a technical solution: a soil sampling device for deep soil sampling, including a drill pipe assembly 1 and an output motor 3. The drill pipe assembly 1 includes a first drill pipe 101, a lower clamping box 102, a first through hole 103, a hollow clamping box 104, a second through hole 105, a second drill pipe 106 and a through clamping member 107. The bottom of the inner wall of the first drill pipe 101 is fixed with a lower clamping box 102, and a first through hole 103 is opened on the upper surface of the lower clamping box 102. The top of the inner wall of the first drill pipe 101 is fixed with a hollow clamping box 104, and a second through hole 105 is opened on the lower surface of the hollow clamping box 104. A second drill pipe 106 is inserted into the hollow clamping box 104, and a through clamping member 107 is fixed at the bottom end of the second drill pipe 106. The top end of the second drill pipe 106 is inserted with a plug shaft 2 through a plug post, and the top of the plug shaft 2 is connected with an output motor 3. The outer shape and structure size of the through clamping member 107 are adapted to the inner port structure size of the first through hole 103 and the second through hole 105, and the through clamping member 107 is slidably connected with the hollow clamping box 104 through the second drill pipe 106. The number of the second drill pipes 106 is at least one. When the number of the second drill pipes 106 is one, it is a solid column. When the number of the second drill pipes 106 is more than one, they are arranged in a nested manner inside, and the structures of the second drill pipes 106 except the innermost one are the same as that of the first drill pipe 101;

[0027] The specific operation is as follows. The number of the second drill pipes 106 is at least one, the optimal number is two, and the maximum number is three. When the number of the second drill pipes 106 is one, it is a solid structure. When the number of the second drill pipes 106 is two or three, the structures of the drill pipes except the innermost second drill pipe 106 are the same as that of the first drill pipe 101, and only the diameter sizes are different. They are all provided with a lower clamping box 102, a first through hole 103, a hollow clamping box 104, a second through hole 105, as well as a groove 108, a torsion spring shaft 109 and an inner support column 110. After the second drill pipe 106 penetrates through the hollow clamping box 104, it can stretch along the inside of the first drill pipe 101, and the lengths of the second drill pipes 106 and the first drill pipe 101 are the same;

[0028] In actual use, the top end of the innermost second drill pipe 106 is inserted into the plug shaft 2. At this time, the entire drill pipe assembly 1 is in a contracted state. The through clamping members 107 at the bottoms of the second drill pipes 106 pass through the first through hole 103 and enter the inside of the lower clamping box 102. As the output motor 3 drives the plug shaft 2 to rotate, the innermost second drill pipe 106 is stressed to drive the through clamping member 107 to rotate, so that the through clamping member 107 is misaligned with the first through hole 103 and drives the outer second drill pipe 106 to rotate accordingly. By repeating the above operation, the entire drill pipe is driven in sequence from the inside to the outside until the first drill pipe 101 rotates. As the first drill pipe 101 rotates, the drill bit body 503 drills into the soil;

[0029] When the first drill pipe 101 is about to completely enter the soil, the output motor 3 drives the insertion shaft 2 to rotate in the reverse direction so that the penetration fastener 107 coincides with the first penetration hole 103. At this time, the output motor 3 is lifted so that the innermost second drill pipe 106 is pulled out upward until the penetration fastener 107 passes through the second penetration hole 105 and enters the hollow card box 104. At this time, the output motor 3 drives the insertion shaft 2 to resume forward rotation so that the penetration fastener 107 is misaligned with the second penetration hole 105 and drives the entire drill pipe to rotate. At this time, the height of the drill pipe is automatically extended to continue drilling downward into the soil;

[0030] When the drill pipe needs to be retracted, just perform the above operations in reverse to change the entire drill pipe assembly 1 from the extended state to the fully retracted state;

[0031] If all the drill pipes have been pulled out but still have not reached the specified depth, the output motor 3 is lifted and the insertion shaft 2 is separated from the top of the second drill pipe 106. Then, a new drill pipe assembly 1 is taken and connected to the topmost second drill pipe 106 in the old drill pipe assembly 1 through a rotary adapter sleeve, thereby further extending the length of the entire drill pipe.

[0032] As Figures 1-5 shown, the drill pipe assembly 1 further includes a groove 108 and a torsion spring shaft 109. The inner wall of the first drill pipe 101 is provided with a groove 108, and the torsion spring shaft 109 is distributed inside the groove 108. The drill pipe assembly 1 further includes an inner support column 110. An inner support column 110 is fixed to the outer wall of the torsion spring shaft 109. The length of the inner support column 110 is adapted to the inner diameter of the first drill pipe 101, and the inner support columns 110 are staggered with each other;

[0033] The specific operation is as follows. As the second drill pipe 106 is pulled out, the inside of the first drill pipe 101 is hollow. At this time, the outer wall of the inner support column 110 is screwed out by the elastic action of the torsion spring shaft 109 due to the loss of force, so that the end of the inner support column 110 abuts against the opposite inner wall of the first drill pipe 101, and the inner support columns 110 are staggered with each other. Thus, the inside of the first drill pipe 101 is externally supported from different directions, so that external support points are evenly generated on each part of the inner wall of the first drill pipe 101, thereby enhancing the pressure-bearing capacity of the first drill pipe 101 to prevent the surface of the first drill pipe 101 from collapsing due to pressure. And as the second drill pipe 106 retracts, the inner support column 110 is naturally stressed and rotates and resets through the torsion spring shaft 109, so that it will not hinder the telescoping of the second drill pipe 106.

[0034] As Figures 1-5 shown, an electric support assembly 4 is provided on the top of the output motor 3. The electric support assembly 4 includes a support plate 401 and an adjustable support leg 402. The adjustable support leg 402 is provided on the outside of the support plate 401. The electric support assembly 4 further includes an electric telescopic rod 403. The electric telescopic rod 403 is fixedly penetrated through the surface of the support plate 401, and the bottom of the electric telescopic rod 403 is fixedly connected to the top of the output motor 3;

[0035] The specific operation is as follows. The electric support assembly 4 and the drill pipe assembly 1 are of a detachable structure. When the electric support assembly 4 is not in use, the adjustable leg 402 rotates to the outside of the electric telescopic rod 403 to reduce the volume. When the electric support assembly 4 is in use, the adjustable leg 402 rotates to the outside of the drill pipe assembly 1, and the electric telescopic rod 403 expands and contracts to achieve the elongation or shortening of the entire drill pipe when the second drill pipe 106 needs to be pulled out or retracted.

[0036] Based on the above description, the electric telescopic rod 403 and the output motor 3 are used to drill the drill pipe assembly 1 into the soil. When the first drill pipe 101 is about to be submerged in the soil, the rotation of the output motor 3 and the expansion and contraction of the drill pipe assembly 1 cause the second drill pipe 106 to be pulled out and locked by the lower cartridge 102 and the hollow cartridge 104, thereby automatically extending the length of the drill pipe. Thus, it is not necessary for the sampling personnel to frequently disassemble the motor and assemble and splice the drill pipe, so as to realize the automatic soil drilling operation, and the pulled-out part of the drill pipe can be collected through automatic reverse operation to automatically shorten the length of the entire drill pipe, so that it is not necessary for personnel to disassemble the drill pipe after sampling, greatly reducing the work burden of the sampling personnel.

[0037] As Figures 1-5 shown, a sampling drill bit assembly 5 is fixed at the bottom of the first drill pipe 101. The sampling drill bit assembly 5 includes a pipe body 501, an electric push rod 502, and a drill bit body 503. An electric push rod 502 is fixed at the top of the inner wall of the pipe body 501, and the bottom of the electric push rod 502 is connected to the drill bit body 503. The sampling drill bit assembly 5 further includes a sampling ring 504. The bottom of the outer wall of the pipe body 501 is threadedly connected to the sampling ring 504, and the drill bit body 503 passes through the inside of the sampling ring 504.

[0038] The specific operation is as follows. When drilling the soil, the drill bit body 503 is exposed through the extension of the electric push rod 502 through the sampling ring 504. As the first drill pipe 101 rotates, it will drive the drill bit body 503 to rotate and drill to a specified depth in the soil. When the specified depth is reached, the electric push rod 502 contracts to retract the drill bit body 503 into the pipe body 501. At this time, the drill pipe continues to descend and rotate, causing the sampling ring 504 to cut and collect the soil to achieve sampling. After sampling, each drill pipe is sequentially retracted to carry the sample up until it reaches the ground surface.

[0039] In summary, when the soil sampling device for deep soil sampling is in use, first, when the electric support assembly 4 is in use, the adjustable leg 402 rotates to the outside of the drill rod assembly 1 and stands on the ground surface, making the drill rod perpendicular to the soil surface. In actual use, the top of the innermost second drill rod 106 is inserted into the insertion shaft 2. At this time, the entire drill rod assembly 1 is in a contracted state. The penetration fasteners 107 at the bottom of each second drill rod 106 pass through the first penetration holes 103 and enter the inner lower box 102. As the output motor 3 drives the insertion shaft 2 to rotate, the innermost second drill rod 106 is forced to carry the penetration fasteners 107 to rotate, causing the penetration fasteners 107 to be misaligned with the first penetration holes 103 and thereby driving the outer second drill rods 106 to rotate. Repeat the above operation to drive the entire drill rod in sequence from the inside to the outside until the first drill rod 101 rotates. As the electric telescopic rod 403 extends, the first drill rod 101 rotates and descends, causing the drill bit body 503 to drill into the soil;

[0040] When the first drill rod 101 is about to completely enter the soil, the output motor 3 drives the insertion shaft 2 to rotate in the reverse direction so that the penetration fasteners 107 coincide with the first penetration holes 103. At this time, the output motor 3 lifts the innermost second drill rod 106 upward until the penetration fasteners 107 pass through the second penetration holes 105 and enter the hollow card box 104. At this time, the output motor 3 drives the insertion shaft 2 to resume forward rotation, causing the penetration fasteners 107 to be misaligned with the second penetration holes 105 and driving the entire drill rod to rotate. At this time, the height of the drill rod automatically extends to continue drilling downward;

[0041] As the second drill rod 106 is withdrawn, the inside of the first drill rod 101 is hollow. At this time, the outer wall of the inner support column 110 rotates out due to the elastic action of the torsion spring shaft 109 due to the loss of force, so that the end of the inner support column 110 abuts against the opposite inner wall of the first drill rod 101, and the inner support columns 110 are distributed in a staggered manner, thereby externally supporting the inside of the first drill rod 101 from different positions, causing uniform external support points to be generated on each part of the inner wall of the first drill rod 101, thereby enhancing the pressure-bearing capacity of the first drill rod 101;

[0042] When the drill bit body 503 drills the soil, the electric push rod 502 extends through the sampling ring 504 to be exposed. As the first drill rod 101 rotates, it will carry the drill bit body 503 to rotate to drill to a specified depth in the soil. When the specified depth is reached, the electric push rod 502 contracts, causing the drill bit body 503 to retract into the pipe body 501. At this time, the drill rod continues to descend and rotate, causing the sampling ring 504 to cut and collect the soil to achieve sampling.

[0043] The embodiments of the present invention are provided by way of example and description, and are not exhaustive or limit the invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to best explain the principles of the invention and its practical application, and to enable those of ordinary skill in the art to understand the invention so as to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A soil sampling device for deep soil sampling, comprising a drill pipe assembly (1) and an output motor (3), characterized in that: The drill pipe assembly (1) includes a first drill pipe (101), a lower cartridge case (102), a first through hole (103), a hollowed-out cartridge case (104), a second through hole (105), a second drill pipe (106), and a through-insertion member (107). The bottom of the inner wall of the first drill pipe (101) is fixedly provided with the lower cartridge case (102), and the upper surface of the lower cartridge case (102) is provided with the first through hole (103). The top of the inner wall of the first drill pipe (101) is fixedly provided with the hollowed-out cartridge case (104), and the lower surface of the hollowed-out cartridge case (104) is provided with the second through hole (105). The second drill pipe (106) is inserted into the hollowed-out cartridge case (104), and the bottom end of the second drill pipe (106) is fixedly provided with the through-insertion member (107). The top end of the second drill pipe (106) is plugged with a plug shaft (2) through an insertion post, and the top of the plug shaft (2) is connected to an output motor (3). The drill pipe assembly (1) further includes a groove (108) and a torsion spring shaft (109). The inner wall of the first drill pipe (101) is provided with the groove (108), and the torsion spring shaft (109) is distributed inside the groove (108). The drill pipe assembly (1) further includes an inner support column (110). The outer wall of the torsion spring shaft (109) is fixedly provided with the inner support column (110). The length of the inner support column (110) is adapted to the inner diameter of the first drill pipe (101). As the second drill pipe (106) is pulled out, the inside of the first drill pipe (101) is hollow. At this time, the outer wall of the inner support column (110) is screwed out by the elastic action of the torsion spring shaft (109) due to the loss of force, so that the end of the inner support column (110) abuts against the opposite inner wall of the first drill pipe (101), and the inner support columns (110) are distributed in a staggered manner, thereby supporting the inside of the first drill pipe (101) from different directions.

2. The soil sampling device for deep soil sampling according to claim 1, wherein: The outer shape and structure size of the through-insertion member (107) are adapted to the inner port structure size of the first through hole (103) and the second through hole (105), and the through-insertion member (107) is slidably connected to the hollowed-out cartridge case (104) through the second drill pipe (106).

3. The soil sampling device for deep soil sampling according to claim 1, characterized in that: The number of the second drill pipes (106) is at least one. When the number of the second drill pipes (106) is one, it is a solid column. When the number of the second drill pipes (106) is not one, they are arranged in a nested manner inside, and the structures of the second drill pipes (106) except the innermost one are the same as that of the first drill pipe (101).

4. The soil sampling device for deep soil sampling according to claim 1, characterized in that: The top of the output motor (3) is provided with an electric support assembly (4). The electric support assembly (4) includes a support plate (401) and an adjustable support leg (402). The adjustable support leg (402) is arranged outside the support plate (401).

5. The soil sampling device for deep soil sampling according to claim 4, characterized in that: The electric support assembly (4) further includes an electric telescopic rod (403). The electric telescopic rod (403) is fixedly inserted through the surface of the support plate (401), and the bottom of the electric telescopic rod (403) is fixedly connected to the top of the output motor (3).

6. The soil sampling device for deep soil sampling according to claim 1, characterized in that: A sampling drill bit assembly (5) is fixed to the bottom of the first drill pipe (101). The sampling drill bit assembly (5) includes a pipe body (501), an electric push rod (502) and a drill bit body (503). The electric push rod (502) is fixed to the top of the inner wall of the pipe body (501), and the bottom of the electric push rod (502) is connected to the drill bit body (503).

7. The soil sampling device for deep soil sampling according to claim 6, characterized in that: The sampling drill bit assembly (5) further includes a sampling ring (504). The sampling ring (504) is threadedly connected to the bottom of the outer wall of the pipe body (501), and the drill bit body (503) is disposed through the inside of the sampling ring (504).

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