CN117168875B - Soil acquisition equipment with adjustable drilling depth - Google Patents

Abstract

The invention discloses a soil collection equipment with adjustable drilling depth. The invention relates to the technical field of soil collection and includes an adjustment mechanism, which is arranged on the inner side of a support platform. The first motor drives the screw rod to rotate, and the adjustment mechanism The inner surface of the slide rod is slidingly connected to the surface of the slide rod. The thread lift causes the adjustment mechanism to drill into the lower position of the ground. The angle of the screw rod rotation controls the depth of the adjustment mechanism to drill into the ground. It includes a slide table and a drilling assembly. The surface of the table is fixedly connected with a clamping component. In this soil collection equipment with adjustable drilling depth, the surface of the drilling assembly is smooth, and the bottom end of the anti-extrusion mechanism causes the soil to form a hole with the same diameter as the drilling assembly. When the sliding depth of the sliding table reaches a certain value, the sliding The table stops moving downward, and the resistance of the soil limits the drilling assembly, solving the problem of how to adjust the drilling depth for sampling.

Description

Soil collection equipment with adjustable drilling depth

Technical field

The invention relates to the technical field of soil collection, specifically a soil collection equipment with adjustable drilling depth.

Background technique

The soil needs to be sampled before soil quality testing. The existing sampling methods are generally manual sampling with hand-held tools or using a drill to drill the collector into the soil. These two methods are time-consuming and labor-intensive, and the sampling efficiency is low. They are not suitable for deep sampling depths. In deep situations, the method of drilling the collector into the soil cannot ensure that the collector drills vertically, which will lead to the failure of the obtained soil sample and affect the accuracy of later detection. In addition, soil quality testing requires testing of soil samples at different depths. , which increases the difficulty of soil sample collection. During the soil collection process, a drill pipe is usually used to drill into the soil for sampling. The existing drill pipe cannot be accurately collected according to the specific collection depth after being inserted into the soil. The depth of soil collection is too much or too little, resulting in the need to re-collect or the collection accuracy is not high. At the same time, most existing devices usually require additional sensors and other electrical equipment to sense the collection depth, which is not energy-saving and environmentally friendly. Most of them use drilling. After the device drills holes in the ground, the sampling device is then used to sample the soil. During the process of collecting soil samples, it is easy to mix more soil at different depths, resulting in insufficient accuracy of soil sampling and errors in soil detection data. Moreover, the existing When the drilling device drills holes on a slope, it is inconvenient to control and adjust the drilling angle, which can easily lead to deviations in drilling angle and depth, making the device inconvenient to use.

Due to structural design flaws in existing soil collection equipment with adjustable drilling depths, there are problems such as how to adjust the drilling depth for sampling, and the problem of collection errors caused by soil at different depths squeezing each other inside the sampling container.

Contents of the invention

The present invention provides a soil collection device with adjustable drilling depth, which solves the problems mentioned in the above background art.

In order to achieve the above objects, the present invention is realized through the following technical solutions: a soil collection equipment with adjustable drilling depth, including

The car body has a support platform fixedly connected to the top of the car body close to the edge. A connecting plate is fixedly connected to the top of the support platform. A first motor is fixedly connected to the top of the connecting plate close to the support platform. The support The inner side of the table is fixedly connected with a sliding rod;

The adjustment mechanism is arranged on the inner side of the support platform. The first motor drives the screw rod to rotate. The inner side of the adjustment mechanism is slidingly connected to the surface of the sliding rod. The lift of the thread causes the adjustment mechanism to drill into the lower position of the ground. The angle of rod rotation controls the depth of the adjustment mechanism drilling into the ground; it includes a sliding table and a drilling assembly. The surface of the sliding table is fixedly connected with a clamping assembly. The clamping assembly controls the connection between the sliding table and the wire by applying a clamping force. During the connection and separation of the rods, the drilling assembly is drilled to a lower position on the ground with the sliding of the slide table to retrieve soil;

The anti-extrusion mechanism is arranged above the adjustment mechanism. The bottom end of the anti-extrusion mechanism penetrates the inner side of the adjustment mechanism and extends to the lower position of the adjustment mechanism. The slide table drives the drilling assembly to move down to the determined depth. , the anti-extrusion mechanism is separated from the drilling assembly and goes down to collect soil. The interior of the drilling assembly is hollow. At this time, the clamping assembly clamps the bottom of the anti-extrusion mechanism, and the first motor drives the screw rod. Rotate so that the slide table and the anti-extrusion mechanism drill into the lower part of the ground together. The slide table slides downward on the surface of the slide rod, and the electric turntable drives the drilling assembly to rotate rapidly.

Preferably, a fixed rod is fixedly connected to the surface of the slide table, a table body is fixedly connected to an end of the fixed rod away from the slide table, and an electric turntable is fixedly connected to the top of the table body.

Preferably, the clamping assembly includes a slide rail, the surface of the slide rail is fixedly connected to the upper position of the slide table surface, the inner side of the slide rail is slidably connected to a sliding block, and there are two sliding blocks. , there is a hole under the surface of the slide table, the clamping body clamps the lower position of the surface of the anti-extrusion mechanism, the sliding block slides on the inner side of the slide rail, when the sliding blocks approach each other, the inner side of the clamping body Apply pressure to the surface of the anti-crush mechanism.

Preferably, the two sliding blocks are symmetrically distributed with the sliding table as the center, and the surfaces of the two sliding blocks are fixedly connected with clamping bodies, and the surfaces of the clamping bodies are fixedly connected with rubber strips.

Preferably, the drilling assembly includes a sleeve, the bottom of the sleeve is fixedly connected to the output end of the electric turntable, and the inner side of the sleeve is fixedly connected to a drilling pipe.

Preferably, a perforated cylinder is fixedly connected to the bottom end of the drilled pipe, a hole is provided on the surface of the perforated cylinder, and a cambered end is provided at the bottom of the perforated cylinder.

Preferably, the anti-extrusion mechanism includes a sliding cylinder, the surface of the sliding cylinder is slidingly connected to the surface of the sliding rod, a lowering component is fixedly connected to the middle position of the inner side of the sliding cylinder, and the inner surface of the lowering component is fixedly connected. The side and the surface of the screw are connected through threads, and the lower part of the surface of the drilling assembly is clamped by the clamping assembly, so that the sliding table and the sliding cylinder are driven to move downward at the same time. At this time, the bottom end of the soil acquisition assembly is in contact with the drill. The bottom ends of the hole assemblies coincide with each other.

Preferably, a connecting rod is fixedly connected to the surface of the sliding cylinder, a second motor is fixedly connected to an end of the connecting rod away from the sliding cylinder, an extension rod is fixedly connected to the output end of the second motor, and an extension rod is fixedly connected to the surface of the sliding cylinder. The bottom end is fixedly connected with a soil acquisition component.

Preferably, the lowering assembly includes a fixed cylinder, the inner surface of the fixed cylinder is provided with internal threads, the surface of the fixed cylinder is fixedly connected to the middle position of the inner surface of the slide cylinder, and the inner surface of the fixed cylinder is connected to the sliding cylinder through internal threads. The sliding cylinder is connected, the screw rod is driven by the motor to rotate, and the inner surface of the fixed cylinder is driven downward by the thread lift, causing the sliding cylinder to move downward.

Preferably, the bottom of the fixed cylinder is fixedly connected with a sleeve, the bottom end of the sleeve is fixedly connected with the opening and closing cylinder, and the inner side of the sleeve is slidingly connected to the surface of the screw rod.

Preferably, the soil acquisition assembly includes an earth acquisition rod. The top end of the soil acquisition rod is fixedly connected to the bottom end of the extension rod. The diameter of the soil acquisition rod is smaller than the diameter of the extension rod. When the soil acquisition determined depth is not reached, Previously, the top of the drill bit was in close contact with the bottom of the opening barrel, and the surface of the plunger block was embedded into the inner side of the opening barrel. When the drill bit went down to form a drilling hole, the soil would not pass through the gap between the opening barrel and the drill bit. Enter the drilled pipe.

Preferably, a plunger block is fixedly connected to the bottom end of the soil acquisition rod, a drill bit is fixedly connected to the bottom of the plunger block, a groove is provided on the surface of the drill bit, and a spiral screw is fixedly connected to the surface of the soil acquisition rod. piece.

The invention provides a soil collection equipment with adjustable drilling depth. It has the following beneficial effects:

1. This soil collection equipment has an adjustable drilling depth. The surface of the drilling assembly is smooth. The bottom end of the anti-extrusion mechanism causes the soil to form a hole with the same diameter as the drilling assembly. When the depth of the sliding table slides downward reaches a certain value. , the sliding table stops moving downward, and the resistance of the soil limits the drilling assembly, which solves the problem of how to adjust the drilling depth for sampling.

2. In this soil collection equipment with adjustable drilling depth, the sliding table drives the table body to move downward, and the opening cylinder is drilled to the lower position of the ground. When the opening cylinder moves down to a certain depth, the sliding block drives the clamping body away from each other, the anti-extrusion mechanism continues to move downward to sample the soil at a certain depth. The rubber strip increases the clamping resistance of the clamping body to avoid premature separation between the sliding table and the anti-extrusion mechanism, causing drilling to the sampling depth. error.

3. In this soil collection equipment with adjustable drilling depth, the second motor drives the soil acquisition assembly to rotate, and the electric turntable drives the drilling assembly to rotate, effectively reducing the resistance of the soil. After the equipment drills into the soil to a certain depth position, it is clamped The component releases the lowering component, and the lowering component continues to move downwards to continue collecting soil. After the soil collection is completed, the lowering component resets upward and coincides with the drilling component again to complete the soil collection, which solves the problem of mutual extrusion of soil at different depths inside the sampling container. Problems that lead to collection errors.

4. In this soil collection equipment with adjustable drilling depth, the surface of the separation and closing cylinder is clamped by the clamping assembly. When drilling into the ground begins to form the drilling hole, the slide table moves downward together with the slide cylinder and enters the soil. , the clamping assembly releases the opening and closing cylinder, and the opening and closing cylinder moves downward together with the casing. The second motor drives the extension rod to rotate. The drill bit rotates so that the resistance of the spiral blade is smaller when it rotates downward. The length of the casing is extended, so that The soil-boring rod will not be hindered when collecting soil.

5. The arc-shaped end of this soil collection equipment with adjustable drilling depth makes the hole tube less resistant to soil. When the certain depth is reached, the extension rod continues to move downward, and at the same time, the extension rod drives the soil acquisition rod to rotate, and the spiral The blade is driven to rotate so that the soil is squeezed to the surface of the spiral blade. The spiral blade stops rotating and the soil acquisition rod moves upward. The soil at this depth is stored inside the drill pipe, thereby preventing the soil at other depths from affecting the collection. .

Description of drawings

Figure 1 is a perspective view of the top of the entire soil collection equipment with adjustable drilling depth according to the present invention;

Figure 2 is a perspective view of the entire bottom of the soil collection equipment with adjustable drilling depth according to the present invention;

Figure 3 is a schematic structural diagram of the adjustment mechanism of the present invention;

Figure 4 is a schematic structural diagram of the clamping assembly of the present invention;

Figure 5 is a schematic structural diagram of the drilling assembly of the present invention;

Figure 6 is a schematic structural diagram of the anti-extrusion mechanism of the present invention;

Figure 7 is a schematic structural diagram of the penetration component of the present invention;

Figure 8 is a schematic structural diagram of the soil acquisition assembly of the present invention.

In the picture: 1. Car body; 2. Supporting platform; 3. Connecting plate; 4. First motor; 5. Adjustment mechanism; 51. Slide table; 52. Clamping component; 521. Slide rail; 522. Slide block; 523. Clamping body; 524. Rubber strip; 53. Fixed rod; 54. Table body; 55. Electric turntable; 56. Drilling assembly; 561. Sleeve; 562. Drilling pipe; 563. Opening barrel; 564 , Arc end; 6. Anti-extrusion mechanism; 61. Slide cylinder; 62. Lowering component; 621. Fixed cylinder; 622. Internal thread; 623. Casing; 624. Opening and closing cylinder; 63. Connecting rod; 64 , second motor; 65, extension rod; 66, soil acquisition assembly; 661, soil acquisition rod; 662, spiral blade; 663, plunger block; 664, drill bit.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some 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 creative efforts fall within the scope of protection of the present invention.

First Embodiment: As shown in Figures 1-3, the present invention provides a technical solution: a soil collection equipment with adjustable drilling depth, including

Car body 1, a support platform 2 is fixedly connected to the top of the car body 1 near the edge, a connecting plate 3 is fixedly connected to the top of the support platform 2, a first motor 4 is fixedly connected to the top of the connecting plate 3 close to the support platform 2, and the support The inner side of table 2 is fixedly connected with a sliding rod;

The adjusting mechanism 5 is arranged on the inner side of the support platform 2. The first motor 4 drives the screw rod to rotate. The inner side of the adjusting mechanism 5 is slidingly connected to the surface of the sliding rod. The thread lift causes the adjusting mechanism 5 to drill into the lower position of the ground. The angle of screw rotation controls the depth of the adjustment mechanism 5 drilling into the ground; it includes a sliding table 51 and a drilling assembly 56. The surface of the sliding table 51 is fixedly connected to a clamping assembly 52, and the clamping assembly 52 controls the sliding by applying a clamping force. The connection and separation of the table 51 and the screw rod, the drilling assembly 56 follows the sliding of the slide table 51 and drills into the lower position of the ground to collect soil;

A fixed rod 53 is fixedly connected to the surface of the slide table 51, a table body 54 is fixedly connected to the end of the fixed rod 53 away from the slide table 51, and an electric turntable 55 is fixedly connected to the top of the table body 54;

The anti-extrusion mechanism 6 is arranged above the adjustment mechanism 5. The bottom end of the anti-extrusion mechanism 6 penetrates the inner side of the adjustment mechanism 5 and extends to the lower position of the adjustment mechanism 5. The sliding table 51 drives the drilling assembly 56 downward. After moving to a determined depth, the anti-extrusion mechanism 6 separates from the drilling assembly 56 and goes down to retrieve soil.

When in use, the drilling assembly 56 is hollow inside. At this time, the clamping assembly 52 clamps the bottom of the anti-extrusion mechanism 6 , and the first motor 4 drives the screw to rotate, so that the sliding table 51 and the anti-extrusion mechanism 6 Drill into the lower part of the ground together, the sliding table 51 slides downward on the surface of the sliding rod, the electric turntable 55 drives the drilling assembly 56 to rotate rapidly, the surface of the drilling assembly 56 is smooth, and the bottom end of the anti-extrusion mechanism 6 causes the soil to form The drilling assembly 56 has holes with the same diameter. When the sliding depth of the sliding table 51 reaches a certain value, the sliding table 51 stops moving downward. The resistance of the soil causes the drilling assembly 56 to be limited, which solves the problem of how to drill for sampling. The problem of adjusting the hole depth.

Second Embodiment: As shown in Figures 3, 4, and 5, the clamping assembly 52 includes a slide rail 521. The surface of the slide rail 521 is fixedly connected to the upper position of the surface of the slide table 51, and the inner side of the slide rail 521 is slidingly connected. There are sliding blocks 522. There are two sliding blocks 522. The two sliding blocks 522 are symmetrically distributed with the sliding table 51 as the center. The surfaces of the two sliding blocks 522 are fixedly connected with a clamping body 523. The surface of the clamping body 523 A rubber strip 524 is fixedly connected. The drilling assembly 56 includes a sleeve 561. The bottom of the sleeve 561 is fixedly connected to the output end of the electric turntable 55. The inner side of the sleeve 561 is fixedly connected to a drilled pipe 562. The drilled pipe 562 has An opening cylinder 563 is fixedly connected to the bottom end. The surface of the opening cylinder 563 is provided with a hole. The bottom of the opening cylinder 563 is provided with a curved end 564 .

When in use, a hole is opened at the lower surface of the sliding table 51, the clamping body 523 clamps the lower surface of the anti-extrusion mechanism 6, and the sliding block 522 slides on the inner side of the slide rail 521. When the sliding block 522 faces When approaching, the inner surface of the clamping body 523 exerts pressure on the surface of the anti-extrusion mechanism 6, the sliding table 51 drives the table body 54 to move downward, and the hole cylinder 563 drills into the lower position of the ground. When the hole cylinder 563 is lowered, When moving to a certain depth, the sliding block 522 drives the clamping bodies 523 away from each other, and the anti-extrusion mechanism 6 continues to move downward to sample the soil at a certain depth. The rubber strip 524 increases the clamping resistance of the clamping body 523 to avoid slipping. The premature separation between the table 51 and the anti-extrusion mechanism 6 causes an error in the drilling sampling depth.

Third Embodiment: As shown in Figures 3 and 6, a clamping component 52 is fixedly connected to the surface of the sliding table 51. The clamping component 52 controls the connection and separation between the sliding table 51 and the screw by applying a clamping force to drill holes. The assembly 56 drills into the lower part of the ground along with the sliding of the slide table 51 to retrieve soil;

The surface of the sliding table 51 is fixedly connected with a fixed rod 53. One end of the fixed rod 53 away from the sliding table 51 is fixedly connected with a table body 54. The top of the table body 54 is fixedly connected with an electric turntable 55. The anti-extrusion mechanism 6 includes a sliding cylinder 61. The surface of the sliding cylinder 61 is slidingly connected to the surface of the sliding rod. The middle position of the inner side of the sliding cylinder 61 is fixedly connected with the lowering assembly 62. The inner side of the lowering assembly 62 is connected to the surface of the screw rod through threads. The surface of the sliding cylinder 61 A connecting rod 63 is fixedly connected. One end of the connecting rod 63 away from the sliding cylinder 61 is fixedly connected to a second motor 64. The output end of the second motor 64 is fixedly connected to an extension rod 65. The bottom end of the extension rod 65 is fixedly connected to a soil acquisition assembly. 66.

When in use, the lower position of the surface of the descent assembly 62 is clamped by the clamping assembly 52, so that the sliding table 51 and the sliding cylinder 61 are driven to move downward at the same time. At this time, the bottom end of the soil acquisition assembly 66 is in contact with the drilling assembly. The bottom ends of 56 overlap each other, the second motor 64 drives the soil acquisition assembly 66 to rotate, and the electric turntable 55 drives the drilling assembly 56 to rotate, effectively reducing the resistance of the soil. After the equipment drills into the soil to a certain depth position, the clamping assembly 52 Loosen the lowering assembly 62, and continue to move downward to collect soil. After the soil acquisition is completed, the lowering assembly 62 resets upward and coincides with the drilling assembly 56 again to complete the soil acquisition, which solves the problem of soil at different depths inside the sampling container. The problem of mutual extrusion leads to acquisition errors.

Fourth Embodiment: As shown in Figures 6, 7, and 8, the lowering assembly 62 includes a fixed barrel 621. The inner surface of the fixed barrel 621 is provided with an internal thread 622. The surface of the fixed barrel 621 is in contact with the inner surface of the sliding cylinder 61. The middle position is fixedly connected. The bottom of the fixed cylinder 621 is fixedly connected to a sleeve 623. The bottom end of the sleeve 623 is fixedly connected to a dividing sleeve 624. The inner side of the sleeve 623 is slidingly connected to the surface of the screw rod. The soil acquisition assembly 66 includes The soil acquisition rod 661, the top end of the soil acquisition rod 661 is fixedly connected to the bottom end of the extension rod 65, the diameter of the soil acquisition rod 661 is smaller than the diameter of the extension rod 65, the bottom end of the soil acquisition rod 661 is fixedly connected with a plunger block 663, A drill bit 664 is fixedly connected to the bottom of the plunger block 663, a groove is provided on the surface of the drill bit 664, and a spiral blade 662 is fixedly connected to the surface of the soil acquisition rod 661.

When in use, the inner surface of the fixed cylinder 621 is connected to the sliding cylinder 61 through the internal thread 622. The screw rod is driven by the motor to rotate. The inner surface of the fixed cylinder 621 is driven by the thread lift to move downward, causing the sliding cylinder 61 to move downward. The surface of the closing cylinder 624 is clamped by the clamping assembly 52. When it starts to drill into the ground to form a drilling hole, the sliding table 51 moves downward together with the sliding cylinder 61 and enters the inside of the soil. Subsequently, the clamping component 52 releases the opening and closing cylinder. 624, the opening and closing cylinder 624 moves downward together with the casing 623. The second motor 64 drives the extension rod 65 to rotate. The drill bit 664 rotates so that the resistance of the spiral blade 662 is smaller when it rotates downward. The length of the casing 623 is extended, so that the drill bit 664 rotates. The soil rod 661 will not be hindered when extracting soil.

Fifth Embodiment: As shown in Figures 5 and 8, the bottom of the sleeve 561 is fixedly connected to the output end of the electric turntable 55, the inner side of the sleeve 561 is fixedly connected to a drilled pipe 562, and the bottom end of the drilled pipe 562 is fixedly connected. A perforated tube 563 is fixedly connected, and a hole is provided on the surface of the perforated tube 563. A cambered end 564 is provided at the bottom of the perforated tube 563. The top end of the soil fetching rod 661 is fixedly connected to the bottom end of the extension rod 65. The soil fetching rod 661 is fixedly connected with the bottom end of the extension rod 65. The diameter of 661 is smaller than the diameter of extension rod 65. The bottom end of soil acquisition rod 661 is fixedly connected with plunger block 663. The bottom of plunger block 663 is fixedly connected with drill bit 664. The surface of drill bit 664 is provided with a groove. Earth acquisition rod 661 A spiral piece 662 is fixedly connected to the surface.

During use, before reaching the determined depth of soil extraction, the top of the drill bit 664 is in close contact with the bottom of the opening barrel 563, the surface of the plunger block 663 is embedded into the inner side of the opening barrel 563, and the drill bit 664 downwards forms a drilling hole. When, the soil will not enter the drilled pipe 562 through the gap between the hole barrel 563 and the drill bit 664. The arc end 564 makes the hole barrel 563 receive less soil resistance. When the determined depth is reached, the extension rod 65 continues downward. While moving, the extension rod 65 drives the soil acquisition rod 661 to rotate, and the spiral blade 662 is driven to rotate so that the soil is squeezed to the surface of the spiral blade 662. The spiral blade 662 stops rotating, the soil acquisition rod 661 moves upward, and the soil at this depth is moved. It is stored inside the borehole tube 562, thereby preventing the remaining depth of soil from affecting the collection.

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 that these entities or operations are mutually exclusive. any such actual relationship or sequence exists between them. Furthermore, the terms "comprises," "comprises," or any other variations thereof are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also those not expressly listed other elements, or elements inherent to the process, method, article or equipment. Without further restrictions. The statement "includes an element" does not exclude the presence of additional identical elements in a process, method, article or device that includes the stated element.

Claims (4)

1. Soil acquisition equipment with adjustable drilling depth, its characterized in that: comprising

The automobile body (1), the position that is close to the edge at automobile body (1) top fixedly connected with brace table (2), the top fixedly connected with connecting plate (3) of brace table (2), the position that is close to brace table (2) at connecting plate (3) top fixedly connected with first motor (4), the medial surface fixedly connected with slide bar of brace table (2);

the adjusting mechanism (5) is arranged on the inner side surface of the supporting table (2), the first motor (4) drives the screw rod to rotate, the inner side surface of the adjusting mechanism (5) is in sliding connection with the surface of the sliding rod, the screw thread lifting force enables the adjusting mechanism (5) to drill into the position below the ground, and the rotating angle of the screw rod controls the depth of the adjusting mechanism (5) which drills into the ground;

the adjusting mechanism (5) comprises a sliding table (51) and a drilling assembly (56), the surface of the sliding table (51) is fixedly connected with a clamping assembly (52), the surface of the sliding table (51) is fixedly connected with a fixing rod (53), one end of the fixing rod (53), which is far away from the sliding table (51), is fixedly connected with a table body (54), the top of the table body (54) is fixedly connected with an electric turntable (55), the drilling assembly (56) drills into the ground along with the sliding of the sliding table (51) to take earth, the drilling assembly (56) comprises a sleeve (561), the bottom of the sleeve (561) is fixedly connected with the output end of the electric turntable (55), and the inner side surface of the sleeve (561) is fixedly connected with a drilling pipe (562);

the anti-extrusion mechanism (6) is arranged at the upper position of the adjusting mechanism (5), the bottom end of the anti-extrusion mechanism (6) penetrates through the inner side surface of the adjusting mechanism (5) and extends to the lower position of the adjusting mechanism (5), the anti-extrusion mechanism (6) comprises a sliding cylinder (61), the surface of the sliding cylinder (61) is in sliding connection with the surface of a sliding rod, a lower detection assembly (62) is fixedly connected to the middle position of the inner side surface of the sliding cylinder (61), the inner side surface of the lower detection assembly (62) is in threaded connection with the surface of a screw rod, a connecting rod (63) is fixedly connected to the surface of the sliding cylinder (61), one end of the connecting rod (63) away from the sliding cylinder (61) is fixedly connected with a second motor (64), and the output end of the second motor (64) is fixedly connected with an extension rod (65), and the bottom end of the extension rod (65) is fixedly connected with a soil taking assembly (66).

The lower detection component (62) comprises a fixed barrel (621), an inner thread (622) is formed on the inner side surface of the fixed barrel (621), the inner side surface of the fixed barrel (621) is connected with a screw rod through the inner thread (622), the surface of the fixed barrel (621) is fixedly connected with the middle part of the inner side surface of the sliding cylinder (61), a sleeve (623) is fixedly connected to the bottom of the fixed barrel (621), a separation barrel (624) is fixedly connected to the bottom of the sleeve (623), and the inner side surface of the sleeve (623) is in sliding connection with the surface of the screw rod;

during the use, the below position on lower spy subassembly (62) surface is through centre gripping subassembly (52) to make slip table (51) and slide cylinder (61) driven simultaneously down move, at this moment, the bottom of soil sampling subassembly (66) and the bottom of drilling subassembly (56) coincide each other, second motor (64) drive soil sampling subassembly (66) rotate, electric turntable (55) drive drilling subassembly (56) rotate, effectively reduce the resistance of soil, after equipment is bored to the fixed depth position of soil, centre gripping subassembly (52) loosen lower spy subassembly (62), lower spy subassembly (62) continue to move down and continue to take the soil, lower spy subassembly (62) upwards reset and drilling subassembly (56) coincide again after the soil sampling is accomplished.

2. The soil sampling apparatus with adjustable drilling depth as claimed in claim 1, wherein: the bottom of drill pipe (562) fixedly connected with trompil section of thick bamboo (563), the hole has been seted up on the surface of trompil section of thick bamboo (563), the bottom of trompil section of thick bamboo (563) is provided with cambered surface end (564).

3. A soil sampling apparatus with adjustable drilling depth as claimed in claim 2, wherein: the soil sampling assembly (66) comprises a soil sampling rod (661), the top end of the soil sampling rod (661) is fixedly connected with the bottom end of the extension rod (65), and the diameter of the soil sampling rod (661) is smaller than that of the extension rod (65).

4. A soil pick up device with adjustable drill depth as claimed in claim 3, wherein: the bottom fixedly connected with plunger piece (663) of soil sampling pole (661), the bottom fixedly connected with drill bit (664) of plunger piece (663), the surface of drill bit (664) is seted up flutedly, the surface fixedly connected with flight (662) of soil sampling pole (661).