Drilling sampling device for soil exploration

Abstract

The invention belongs to the technical field of soil exploration, and discloses a drilling and sampling device for soil exploration, which comprises a hanging barrel and a hanging rope, and further comprises a hydraulic assembly, a sampling assembly and a control assembly, the sampling assemblies are vertically arranged in the hanging barrel at equal intervals; according to the scheme, the device is placed in a deep hole, the depth of the position where the device is located is changed through the lifting rope, after the device reaches the designated position, hydraulic oil is pumped into the bottommost transverse pipe by operating the hydraulic assembly, the sampling barrel and the sleeve are pushed to drill into the inner wall of the deep hole, samples are sampled and stored in the sampling barrel, and the convex shaft is fixed; at the moment, the sleeve can drive the sampling barrel to rotate in the moving process so as to reduce the load of the hydraulic assembly, after sampling is completed, the hydraulic assembly is operated to extract hydraulic oil in the transverse pipe, then the sampling assembly is reset, and the sampling space of the sampling assembly is increased through hydraulic pressure; and the problems of insufficient power and large occupied space when a motor is used are solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of soil exploration, and specifically relates to a drilling and sampling device for soil exploration. Background Art

[0002] Soil exploration and sampling is a method of collecting soil samples from different depths from the surface to the underground. The purpose is to understand the physical, chemical, and biological properties of the soil, providing a basis for fields such as agriculture, construction, and environmental protection.

[0003] For surface soil, the operator generally inserts a hollow rod directly into the soil. Subsequently, when the rod is taken out, the hollow rod will take out the soil inside the rod together.

[0004] For deep soil, the operator generally drills a deep hole through a drilling device. Subsequently, a geological exploration drilling and sampling device such as the one with publication number CN116358923B is used to sample the deep soil. However, the above solution requires installing mechanisms such as a first motor, a second motor, a transmission belt, and a lead screw inside the outer shell. These parts will greatly occupy the space inside the outer shell, thereby reducing the sampling space of the device. Since the whole device needs to be inserted into the deep hole, generally speaking, the most economical solution is to use a 110mm spiral drill bit for drilling, that is, the diameter of the deep hole is generally 110mm. In this case, when drilling into and sampling the deep soil, it is difficult for a small motor to meet such a high power requirement, while a large motor cannot be adapted to the narrow deep hole environment due to its large volume, and will further compress the sampling space.

[0005] Therefore, to solve the above problems, a drilling and sampling device for soil exploration is proposed. Summary of the Invention

[0006] To solve the problems raised in the above background art, the present invention provides a drilling and sampling device for soil exploration, which solves the problems that the existing device using a motor as the power source will occupy a large sampling space and increase the load on the motor.

[0007] To achieve the above object, the present invention provides the following technical solution: A drilling and sampling device for soil exploration, including a suspension cylinder and a suspension rope, further including: a hydraulic component installed inside the suspension cylinder; a sampling component vertically and equidistantly arranged in the suspension cylinder; wherein, horizontal pipes and vertical pipes are equidistantly opened in the suspension cylinder, and all the horizontal pipes except the topmost suspension cylinder are used to connect two adjacent vertical pipes. Hydraulic oil is filled in the horizontal pipes and vertical pipes. A valve body component for initially blocking the connection between the horizontal pipe and the vertical pipe is also arranged at the bottom end of the horizontal pipe. The hydraulic component is initially used to pump hydraulic oil into the lowermost horizontal pipe.

[0008] The sampling component includes a fixed cylinder fixedly connected inside the suspension cylinder. A sampling cylinder and a sleeve are movably sleeved inside and outside the fixed cylinder respectively, and the sleeve is fixedly connected to one end of the sampling cylinder. An inclined groove is provided on the inner wall of the sleeve, and a convex shaft that can slide in the inclined groove is fixedly connected to the outer periphery of the fixed cylinder;

[0009] An elastic plate member is further arranged inside the sampling cylinder. After the elastic plate member is pushed out with the sampling component and returns with soil, it can squeeze the valve body component downward and keep the adjacent horizontal pipe and vertical pipe continuously connected.

[0010] Preferably, the hydraulic component includes a pump body fixedly installed at the bottom of the suspension cylinder. An oil storage bladder is also fixedly installed inside the suspension cylinder. The input end of the pump body is communicated with the bottom of the oil storage bladder, and the output end of the pump body is communicated with the lowermost horizontal pipe.

[0011] Preferably, the elastic plate member includes an elastic push plate elastically connected inside the sampling cylinder. In the initial state, the plate body part of the elastic push plate is located in the middle of the sampling cylinder. The rod body part of the elastic push plate passes through the sampling cylinder and extends into the horizontal pipe. A wedge-shaped block is fixedly connected to one end of the elastic push plate located inside the horizontal pipe;

[0012] The valve body component includes an elastic piston I elastically connected to the bottom of the vertical pipe. In the initial state, the elastic piston I has an upward trend and blocks the bottom of the vertical pipe. A through hole is provided at the top of the elastic piston I, and a connecting column is fixedly connected to the bottom of the elastic piston I. The bottom end of the connecting column extends into the horizontal pipe;

[0013] The bottom of the connecting column is spherical, and the wedge-shaped block has an overlapping part with the bottom end of the connecting column in the horizontal direction.

[0014] Preferably, constant pressure holes are annularly and arrayedly provided on the plate body part of the elastic push plate.

[0015] Preferably, the bottom of the wedge-shaped block is a contact surface, and the contact surface is located below the spherical part of the connecting column to limit the upward movement of the connecting column.

[0016] Preferably, a cavity is provided at the bottom of the suspension cylinder, and a bent pipe is also provided on the suspension cylinder. The top end of the bent pipe is communicated with the uppermost vertical pipe, and the bottom end of the bent pipe is communicated with the cavity and hydraulic oil is filled in both of them;

[0017] A protection component is further arranged at the bottom of the suspension cylinder, and the top end of the protection component extends to the bottom end of the cavity.

[0018] Preferably, the protection component includes an elastic piston two that is elastically connected to the bottom of the suspension cylinder and has an upward trend. An elastic clamping block is elastically hinged inside the elastic piston two. The bottom end of the elastic clamping block extends below the suspension cylinder. An arc-shaped groove is formed at the top of the elastic piston two. A limiting convex block that can slide in the arc-shaped groove is fixedly connected to the top of the elastic clamping block.

[0019] Preferably, a limiting groove is formed in the elastic piston two, and a limiting block that can slide in the limiting groove is fixedly connected to the bottom of the suspension cylinder.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] In the above solution, the device is placed in a deep hole and the depth of the device's position is changed by a suspension rope. After the device reaches the designated position, the hydraulic component is operated to pump hydraulic oil into the bottommost horizontal pipe, and the sampling cylinder and the sleeve are pushed to drill into the inner wall of the deep hole to take samples and store them in the sampling cylinder. When the sleeve moves outward, since the convex shaft will slide in the inclined groove and the convex shaft is fixed, at this time, the sleeve will drive the sampling cylinder and rotate during the movement to reduce the load of the hydraulic component. After sampling is completed, the hydraulic component is operated to extract the hydraulic oil in the horizontal pipe, so that the sampling component is reset. The device increases the sampling space of the sampling component through hydraulic pressure and solves the problems of insufficient power and large occupied space when using a motor.

[0022] In the above solution, during the sampling process of the sampling cylinder, the soil will press the elastic push plate and cause the wedge-shaped block to move towards the valve body assembly. After the sampling cylinder is reset, the sampling cylinder will also drive the elastic plate member as a whole to move towards the valve body assembly, so that the wedge-shaped block squeezes the connecting column and drives the elastic piston one to move downward until the bottom end of the connecting column is below the abutting surface. At this time, the adjacent set of horizontal pipes and vertical pipes are connected. Subsequently, when hydraulic oil is pumped into the horizontal pipe again, the hydraulic oil will enter the next set of horizontal pipes through the vertical pipe and drive the next set of sampling components to take samples, thus facilitating the operator to take samples of soils at different depths at one time.

[0023] In the above solution, after the last set of sampling components takes samples and resets, the hydraulic component is operated to make the hydraulic oil enter the cavity through the bent pipe and drive the elastic piston two to move downward. At this time, under the action of the self-elastic force of the elastic clamping block, the elastic clamping block will be inclined, and the bottom end of the elastic clamping block will abut against the inner wall of the deep hole. When the operator makes an operation error and loosens the suspension rope, due to the support of the elastic clamping block, the situation that the whole device falls to the bottom of the deep hole and is damaged can be avoided. At the same time, when the operator lifts the device upward, the inner wall of the deep hole will squeeze the elastic clamping block to contract for the convenience of lifting the device. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0025] Figure 2 Front sectional view structure diagram of the suspension cylinder of the present invention;

[0026] Figure 3 Front sectional view structure diagram of the present invention;

[0027] Figure 4 is Figure 3 Enlarged view of part A in

[0028] Figure 5 is Figure 3 Enlarged view of part B in

[0029] Figure 6 Split structure diagram of the sampling component of the present invention;

[0030] Figure 7 Structure diagram of the valve body component of the present invention;

[0031] Figure 8 Sectional view structure diagram of the bent pipe of the present invention;

[0032] Figure 9 Partial sectional view structure diagram of the front of the suspension cylinder of the present invention.

[0033] In the figure: 1. Suspension cylinder; 11. Horizontal pipe; 12. Vertical pipe; 13. Cavity; 14. Bent pipe; 15. Limit block; 16. Suspension rope; 2. Hydraulic component; 21. Pump body; 22. Oil storage bladder; 3. Sampling component; 31. Fixed cylinder; 32. Sampling cylinder; 33. Sleeve; 34. Inclined groove; 35. Convex shaft; 4. Elastic plate member; 41. Elastic push plate; 411. Constant pressure hole; 42. Wedge block; 421. Contact surface; 5. Valve body component; 51. Elastic piston I; 52. Through hole; 53. Connecting column; 6. Protection component; 611. Limit groove; 61. Elastic piston II; 62. Elastic clamping block; 63. Limit convex block; 64. Arc groove. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0035] As Figures 1 to 9 shown, the present invention provides a drilling sampling device for soil exploration, including a suspension cylinder 1 and a suspension rope 16, and further including: a hydraulic component 2, which is installed inside the suspension cylinder 1; a sampling component 3, which is vertically and equidistantly arranged in the suspension cylinder 1;

[0036] Among them, horizontal pipes 11 and vertical pipes 12 are equidistantly arranged in the suspension cylinder 1. All the horizontal pipes 11 except the topmost suspension cylinder 1 are used to connect two adjacent vertical pipes 12. The horizontal pipes 11 and the vertical pipes 12 are filled with hydraulic oil. A valve body assembly 5 is also arranged at the bottom end of the horizontal pipe 11 for initially blocking the connection between the horizontal pipe 11 and the vertical pipe 12. The hydraulic assembly 2 is initially used to pump hydraulic oil into the bottommost horizontal pipe 11.

[0037] The sampling assembly 3 includes a fixed cylinder 31 fixedly connected to the inside of the suspension cylinder 1. A sampling cylinder 32 and a sleeve 33 are movably sleeved inside and outside the fixed cylinder 31 respectively, and the sleeve 33 is fixedly connected to one end of the sampling cylinder 32. An inclined groove 34 is arranged on the inner wall of the sleeve 33, and a convex shaft 35 capable of sliding in the inclined groove 34 is fixedly connected to the outer periphery of the fixed cylinder 31.

[0038] An elastic plate member 4 is also arranged inside the sampling cylinder 32. After the elastic plate member 4 is pushed out with the sampling assembly 3 and drives the soil to reset, it can squeeze the valve body assembly 5 downward and keep the adjacent horizontal pipe 11 and vertical pipe 12 continuously connected.

[0039] With the above scheme, by putting the device into a deep hole and changing the depth of the device's position through the suspension rope 16. After the device reaches the designated position, the hydraulic assembly 2 is operated to pump hydraulic oil into the bottommost horizontal pipe 11, and the sampling cylinder 32 and the sleeve 33 are pushed into the inner wall of the deep hole for sampling and storing in the sampling cylinder 32. When the sleeve 33 moves outward, since the convex shaft 35 will slide in the inclined groove 34 and the convex shaft 35 is fixed, at this time the sleeve 33 will drive the sampling cylinder 32 and rotate during the movement to reduce the load of the hydraulic assembly 2. After sampling, the hydraulic assembly 2 is operated to extract the hydraulic oil in the horizontal pipe 11, so that the sampling assembly 3 is reset. The problem of insufficient power and large occupied space when using a motor is solved by hydraulic means.

[0040] As Figure 1 and Figure 2 shown, the hydraulic assembly 2 includes a pump body 21 fixedly installed at the bottom of the suspension cylinder 1. An oil storage bladder 22 is also fixedly installed in the suspension cylinder 1. The input end of the pump body 21 is communicated with the bottom of the oil storage bladder 22, and the output end of the pump body 21 is communicated with the lowermost horizontal pipe 11.

[0041] With the above scheme, through the design of the oil storage bladder 22, when the pump body 21 operates, it pumps the hydraulic oil in the oil storage bladder 22 and inputs it into the horizontal pipe 11. At this time, the oil storage bladder 22 will deform, avoiding the situation that a vacuum will appear inside the oil storage bladder 22 after the hydraulic oil in the oil storage bladder 22 is extracted, which increases the extraction resistance of the pump body 21, and at the same time reduces the load of the pump body 21.

[0042] As Figures 2 to 7As shown in the figure, the elastic plate member 4 includes an elastic push plate 41 elastically connected inside the sampling cylinder 32. In the initial state, the plate body portion of the elastic push plate 41 is located in the middle of the sampling cylinder 32, and the rod body portion of the elastic push plate 41 passes through the sampling cylinder 32 and extends into the horizontal pipe 11. One end of the elastic push plate 41 located inside the horizontal pipe 11 is fixedly connected with a wedge-shaped block 42;

[0043] The valve body assembly 5 includes an elastic piston 51 elastically connected to the bottom of the vertical pipe 12. In the initial state, the elastic piston 51 has an upward trend and blocks the bottom of the vertical pipe 12. A through hole 52 is opened at the top of the elastic piston 51, and a connecting column 53 is fixedly connected to the bottom of the elastic piston 51. The bottom end of the connecting column 53 extends into the horizontal pipe 11;

[0044] The bottom of the connecting column 53 is spherical, and the wedge-shaped block 42 has an overlapping part with the bottom end of the connecting column 53 in the horizontal direction; the bottom of the wedge-shaped block 42 is an abutting surface 421, and the inclination direction of the abutting surface 421 is opposite to the inclination direction of the wedge-shaped block 42. The abutting surface 421 is located below the spherical part of the connecting column 53 and can limit the upward movement of the connecting column 53; the plate body portion of the elastic push plate 41 is annularly and arrayed with constant pressure holes 411;

[0045] With the above scheme, during the sampling process by the sampling cylinder 32, the soil will press the elastic push plate 41 and cause the wedge-shaped block 42 to move towards the valve body assembly 5. After the sampling cylinder 32 is reset, the sampling cylinder 32 will also drive the entire elastic plate member 4 to move towards the valve body assembly 5, so that the wedge-shaped block 42 squeezes the connecting column 53 and drives the elastic piston 51 to move downward until the bottom end of the connecting column 53 is located below the abutting surface 421. At this time, the adjacent group of horizontal pipe 11 and vertical pipe 12 are communicated. Subsequently, when hydraulic oil is pumped into the horizontal pipe 11 again, the hydraulic oil will enter the next group of horizontal pipe 11 through the vertical pipe 12 and drive the next group of sampling assemblies 3 to perform sampling, which is convenient for the operator to perform sampling operations on soils at different depths at one time.

[0046] As Figure 2 、 Figure 3 、 Figure 8 and Figure 9 As shown in the figure, a cavity 13 is opened at the bottom of the hanging cylinder 1, and a bent pipe 14 is also opened on the hanging cylinder 1. The top end of the bent pipe 14 is communicated with the topmost vertical pipe 12, and the bottom end of the bent pipe 14 is communicated with the cavity 13 and both are filled with hydraulic oil;

[0047] A protective component 6 is also provided at the bottom of the lifting cylinder 1, and the top end of the protective component 6 extends to the bottom end of the cavity 13; the protective component 6 includes an elastic piston two 61 elastically connected to the bottom of the lifting cylinder 1 and having an upward trend. An elastic clamping block 62 is elastically hinged inside the elastic piston two 61. The bottom end of the elastic clamping block 62 extends below the lifting cylinder 1. An arc-shaped groove 64 is formed at the top of the elastic piston two 61. A limiting convex block 63 capable of sliding in the arc-shaped groove 64 is fixedly connected to the top of the elastic clamping block 62; a limiting groove 611 is formed in the elastic piston two 61, and a limiting block 15 capable of sliding in the limiting groove 611 is fixedly connected to the bottom of the lifting cylinder 1.

[0048] With the above scheme, after the last sampling component 3 samples and resets, the hydraulic component 2 is operated to make the hydraulic oil enter the cavity 13 through the bent pipe 14 and drive the elastic piston two 61 to move downward. At this time, under the action of the self-elastic force of the elastic clamping block 62, the elastic clamping block 62 will be inclined, and the bottom end of the elastic clamping block 62 will abut against the inner wall of the deep hole. When the operator makes an operation error and loosens the lifting rope 16, due to the support of the elastic clamping block 62, the situation that the whole device falls to the bottom of the deep hole and is damaged can be avoided. At the same time, when the operator lifts the device upward, the inner wall of the deep hole will squeeze the elastic clamping block 62 to contract for the device to be lifted.

[0049] The working principle and usage process of the present invention:

[0050] First, the operator puts the device into the deep hole and changes the depth of the position of the device through the lifting rope 16. After the device reaches the designated position, the hydraulic component 2 is operated to pump the hydraulic oil into the bottommost horizontal pipe 11, and push the sampling cylinder 32 and the sleeve 33 to drill into the inner wall of the deep hole for sampling and storing in the sampling cylinder 32. When the sleeve 33 moves outward, since the convex shaft 35 will slide in the inclined groove 34 and the convex shaft 35 is fixed, at this time, the sleeve 33 will drive the sampling cylinder 32 and will also rotate during the movement to reduce the load of the hydraulic component 2. After sampling is completed, the hydraulic component 2 is operated to extract the hydraulic oil in the horizontal pipe 11, so that the sampling component 3 is reset;

[0051] When the sampling cylinder 32 is sampling, the soil will press the elastic push plate 41 and make the wedge-shaped block 42 move towards the valve body component 5. After the sampling cylinder 32 is reset, the sampling cylinder 32 will also drive the elastic plate member 4 as a whole to move towards the valve body component 5, so that the wedge-shaped block 42 squeezes the connecting column 53 and drives the elastic piston one 51 to move downward until the bottom end of the connecting column 53 is located below the abutting surface 421. At this time, the adjacent group of horizontal pipe 11 and vertical pipe 12 are communicated. Subsequently, when hydraulic oil is pumped into the horizontal pipe 11 again, the hydraulic oil will enter the next group of horizontal pipe 11 through the vertical pipe 12 and drive the next group of sampling components 3 to sample, so as to facilitate the operator to sample the soil at different depths at one time.

[0052] After the last set of sampling components 3 has sampled and reset, the hydraulic component 2 continues to operate at this time, causing the hydraulic oil to enter the cavity 13 through the bent pipe 14 and driving the second elastic piston 61 to move downward. At this time, under the action of the self-elastic force of the elastic block 62, the elastic block 62 will be inclined, and the bottom end of the elastic block 62 will abut against the inner wall of the deep hole. When the operator makes an operation error and loosens the lifting rope 16, the support of the elastic block 62 can prevent the whole device from falling to the bottom of the deep hole and being damaged. At the same time, when the operator lifts the device upward, the inner wall of the deep hole will squeeze the elastic block 62 to contract for easy lifting of the device.

[0053] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0054] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drilling sampling device for soil exploration, comprising a suspension tube (1) and a suspension rope (16), characterized in that: Also includes: A hydraulic assembly (2) installed inside the suspension tube (1); Sampling components (3) are vertically equidistantly arranged in the hanging tube (1); The suspension tube (1) is provided with horizontal tubes (11) and vertical tubes (12) at equal intervals. The horizontal tubes (11) other than the suspension tube (1) located at the top are used to connect two adjacent vertical tubes (12). The horizontal tubes (11) and vertical tubes (12) are filled with hydraulic oil. The bottom end of the horizontal tube (11) is also provided with a valve body assembly (5) for initially blocking the connection between the horizontal tube (11) and the vertical tube (12). The hydraulic assembly (2) is initially used to pump hydraulic oil into the horizontal tube (11) at the bottom. The sampling assembly (3) comprises a fixed cylinder (31) fixedly connected to the inside of the hanging cylinder (1), the inside and outside of the fixed cylinder (31) are movably sleeved with a sampling cylinder (32) and a sleeve (33), and the sleeve (33) is fixedly connected to one end of the sampling cylinder (32), the inner wall of the sleeve (33) is provided with an inclined groove (34), and the outer periphery of the fixed cylinder (31) is fixedly connected with a convex shaft (35) that can slide in the inclined groove (34); An elastic plate (4) is also provided inside the sampling tube (32). The elastic plate (4) is pushed out along with the sampling assembly (3) and reset with the soil, and can squeeze the valve body assembly (5) downward, and keep the adjacent horizontal pipe (11) and vertical pipe (12) in continuous communication.

2. The soil exploration drilling sampling device according to claim 1, characterized in that: The hydraulic assembly (2) comprises a pump body (21) fixedly mounted on the bottom of the hanging barrel (1), an oil storage bag (22) also fixedly mounted in the hanging barrel (1), an input end of the pump body (21) being connected to the bottom of the oil storage bag (22), and an output end of the pump body (21) being connected to the horizontal pipe (11) located at the bottom.

3. The soil exploration drilling sampling device according to claim 1, characterized in that: The elastic plate member (4) comprises an elastic push plate (41) elastically connected to the inside of the sampling tube (32); in an initial state, the plate body of the elastic push plate (41) is located in the middle of the sampling tube (32); the rod body of the elastic push plate (41) passes through the sampling tube (32) and extends to the inside of the transverse tube (11); and a wedge block (42) is fixedly connected to one end of the elastic push plate (41) located inside the transverse tube (11); The valve body assembly (5) comprises an elastic piston (51) elastically connected to the bottom of the vertical tube (12); in an initial state, the elastic piston (51) has an upward tendency and blocks the bottom of the vertical tube (12); a through hole (52) is provided at the top of the elastic piston (51); a connecting column (53) is fixedly connected to the bottom of the elastic piston (51); and the bottom end of the connecting column (53) extends into the horizontal tube (11); The bottom of the connecting column (53) is spherical, and the wedge block (42) has an overlapping portion with the bottom end of the connecting column (53) in the horizontal direction.

4. The soil exploration drilling sampling device according to claim 3, characterized in that: The plate body of the elastic push plate (41) is provided with constant pressure holes (411) in an annular array.

5. The soil exploration drilling sampling device according to claim 4, characterized in that: The bottom of the wedge block (42) is a contact surface (421), and the contact surface (421) is located below the spherical part of the connecting column (53) and can limit the upward movement of the connecting column (53).

6. The soil exploration drilling sampling device according to claim 5, characterized in that: A cavity (13) is provided at the bottom of the hanging tube (1), and a bending tube (14) is also provided on the hanging tube (1), the top end of the bending tube (14) is connected to the vertical tube (12) at the top, and the bottom end of the bending tube (14) is connected to the cavity (13), and both are filled with hydraulic oil; A protective component (6) is also provided at the bottom of the hanging tube (1), and the top end of the protective component (6) extends to the bottom end of the cavity (13).

7. The soil exploration drilling sampling device according to claim 6, characterized in that: The protection component (6) comprises an elastic piston (61) which is elastically connected to the bottom of the hanging barrel (1) and has an upward tendency. An elastic block (62) is elastically hinged inside the elastic piston (61). The bottom end of the elastic block (62) extends to the bottom of the hanging barrel (1). An arc groove (64) is formed on the top of the elastic piston (61). A limiting protrusion (63) which can slide in the arc groove (64) is fixed to the top of the elastic block (62).

8. The soil exploration drilling sampling device according to claim 7, characterized in that: A limiting groove (611) is provided on the second elastic piston (61), and a limiting block (15) capable of sliding in the limiting groove (611) is fixedly connected to the bottom of the hanging cylinder (1).

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