A soil extraction device for rapid detection

Abstract

The present application discloses an extraction device for rapid soil detection, which belongs to the field of mineral geological exploration. A base; a moving part, arranged at the bottom of the base, used to drive the base to move; a fixed seat, arranged at the upper end of the base; a sampling rod, movably arranged on the fixed seat; a drill bit, fixed at the bottom end of the sampling rod; an extraction mechanism, arranged in the sampling rod, used to extract soil; wherein the extraction mechanism is composed of a sampling structure arranged on the side wall of the sampling rod and a spiral feeder rotatably arranged inside the sampling rod. The beneficial effect of the present application is to provide an extraction device for rapid soil detection suitable for hard soil.

Description

Technical Field

[0001] The present application relates to the field of mineral geological exploration, and in particular to an extraction device for rapid soil detection. Background Art

[0002] Iron ore is an important raw material for steel production enterprises. Natural ore (iron ore) is gradually separated from iron through crushing, grinding, magnetic separation, flotation, gravity separation and other procedures. Iron ore is a mineral aggregate containing iron or iron compounds that can be economically utilized.

[0003] Before mining, geological surveys will be conducted to detect the element content in the soil; however, in actual practice, workers will drill holes at the site and then extract the soil at the bottom of the hole for testing;

[0004] When drilling holes in the above manner, on the one hand, since the holes are vertically downward, the soil on the surface of the coating will fall into the holes during the drilling process. In this way, the soil extracted during extraction is not completely the soil inside the holes, but is mixed with soil from other coatings, which affects the detection structure.

[0005] On the other hand, since the soil of iron ore is relatively hard, it is more troublesome to extract after drilling; therefore, it is necessary to design an extraction device that can accurately extract the corresponding coating and adapt to hard soil for rapid soil testing. Summary of the invention

[0006] The content of this application is used to introduce concepts in a brief form, which will be described in detail in the detailed implementation section below. The content of this application is not intended to identify the key features or essential features of the technical solution claimed for protection, nor is it intended to limit the scope of the technical solution claimed for protection.

[0007] In order to solve the technical problems mentioned in the above background technology section, some embodiments of the present application provide an extraction device for rapid soil detection, a base;

[0008] A moving part, arranged at the bottom of the base, for driving the base to move;

[0009] A fixing seat, arranged at the upper end of the base;

[0010] The extraction device for rapid soil testing also includes:

[0011] The sampling rod is movably arranged on the fixed seat;

[0012] A drill bit is fixed at the bottom end of the sampling rod;

[0013] An extraction mechanism, disposed in the sampling rod, for extracting soil;

[0014] The extraction mechanism is composed of a sampling structure arranged on the side wall of the sampling rod and a screw feeder rotatably arranged inside the sampling rod.

[0015] Further, the sampling structure comprises:

[0016] A sampling tube is arranged on the sampling rod so as to move along the radial direction of the sampling rod;

[0017] A plurality of crushing wheels are arranged in the sampling tube;

[0018] A rotating assembly is arranged in the sampling tube and is used to drive the sampling tube to rotate;

[0019] A sawtooth portion is formed at the end of the sampling tube; a guide portion is formed on the inner wall of one end of the sampling tube away from the sawtooth portion, and the guide portion is connected to the screw feeder.

[0020] Further, the interior of the sampling rod forms a feeding cavity for accommodating the screw feeder;

[0021] The inner wall of the feeding cavity is radially penetrated to form a guide groove for the sampling tube to move and set;

[0022] The outer wall of the sampling tube is formed with a limiting groove along the circumferential direction, and the limiting groove is arranged in a wave shape on the outer wall of the sampling tube;

[0023] The inner wall of the guide groove forms a limiting column embedded in the limiting groove.

[0024] Furthermore, the limiting groove forms arc-shaped near-ground parts and far-ground parts on both sides of the sampling tube in the axial direction;

[0025] The near-ground portion and the far-ground portion are arranged in a circumferential array along the circumference of the sampling tube;

[0026] The distances between the surfaces of two adjacent ground-proximal parts and the end wall of the sampling tube are all different.

[0027] Further, the inner wall of the sampling tube forms a fixing frame;

[0028] A crushing wheel is rotatably arranged at the end of the fixed frame;

[0029] The surface of the crushing wheel forms conical crushing teeth;

[0030] The fixing frame extends from the inner wall of the sampling tube toward the direction close to the sawtooth portion and tilts radially during the extension process.

[0031] Further, the rotating assembly comprises:

[0032] A fixed gear is fixed on the outer wall of the sampling tube;

[0033] A rotating gear is arranged in the sampling tube;

[0034] A gear rod is rotatably disposed in the sampling rod, one end of which is meshed with the rotating gear;

[0035] A plurality of gear plates are radially movable and arranged at the other end of the gear rod and mesh with the fixed gear;

[0036] The toothed discs are arranged in a circumferential array along the circumferential direction of the gear rod and are connected to the gear rod via an elastic member.

[0037] Further, the fixing seat forms a sample cavity for accommodating the soil sample;

[0038] The inner wall portion of the sample cavity penetrates into the feeding cavity to form a feeding trough;

[0039] The inner wall of the feeding cavity penetrates to the outside to form a feeding hole;

[0040] The inner wall of the feeding hole is moved to set a feeding extension pipe;

[0041] The extending tube is connected to the inside of the feeding hole through an elastic member.

[0042] Furthermore, the fixing seat is provided with a support plate which can move along the axial direction of the fixing seat;

[0043] A threaded rod fixedly connected to the end of the sampling rod is rotatably arranged on the surface of the support plate;

[0044] The threaded rod is rotatably arranged inside the threaded rod and the rotating rod of the spiral screw feeder;

[0045] Wherein, a driver for driving the threaded rod and the rotating rod is arranged on the supporting plate.

[0046] Furthermore, a butt joint structure for connecting the rotating rod and the threaded rod is provided on the surface of the support plate;

[0047] The docking structure is composed of a first toothed disc arranged on the threaded rod and a second toothed disc arranged on the rotating rod;

[0048] The diameter of the first toothed disc is greater than the diameter of the second toothed disc;

[0049] The surface of the support plate is provided with a docking gear meshed with the first gear plate and the second gear plate;

[0050] Wherein, the docking gear is connected with the driver.

[0051] Furthermore, the surface of the fixing seat is axially concave to form a limiting hole;

[0052] The inner wall of the limiting hole is movably provided with a support rod for supporting the support plate;

[0053] Wherein, the bottom of the support rod is connected to the bottom of the limiting hole through an elastic member.

[0054] The beneficial effects of the present application are: 1. The setting of the spiral feeder allows the soil to be directly transmitted to the outside after extraction, thereby improving the convenience of sampling; 2. The setting of the sampling tube allows the extraction of hard soil, thereby improving the adaptability of soil extraction; 3. The setting of the crushing wheel allows the hard soil on the inner wall to be directly crushed when the soil is extracted by the sampling tube, so that the extracted soil sample is finer and is conducive to subsequent testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The illustrative embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application.

[0056] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the components and elements are not necessarily drawn to scale.

[0057] In the attached picture:

[0058] Figure 1 is an overall schematic diagram according to an embodiment of the present application;

[0059] Figure 2 is an overall half-section schematic diagram according to an embodiment of the present application;

[0060] Figure 3 It is a structural schematic diagram of a part of the embodiment, mainly showing the structure of the first gear plate and the second gear plate;

[0061] Figure 4 It is a structural schematic diagram of a part of the embodiment, mainly showing the structure of the screw feeder;

[0062] Figure 5 It is a structural schematic diagram of a part of the embodiment, mainly showing the structure of the gear rod;

[0063] Figure 6 It is a structural schematic diagram of a part of the embodiment, mainly showing the structure of the toothed disc;

[0064] Figure 7 It is a structural schematic diagram of a part of the embodiment, mainly showing the structure of the sampling tube;

[0065] Figure 8 It is a schematic structural diagram of a part of the embodiment, mainly showing the structure of the limiting groove;

[0066] Fig. 9 yes Figure 2 Enlarged view of part A.

[0067] Reference numerals:

[0068] 1-base; 11-fixed seat; a11-moving slot; 12-support plate; 121-support rod; 13-threaded rod; a12-limiting hole; a111-sample chamber; a112-feeding slot;

[0069] 2- moving parts;

[0070] 3-sampling rod; 31-drill bit; a3-feeding cavity; a31-feeding hole; 32-extension tube;

[0071] 4-extraction mechanism; 41-sampling structure; 42-screw feeder; 421-rotating rod; 422-first toothed disc; 423-second toothed disc; 424-jointing gear; a42-slideway; 425-slider;

[0072] 411-sampling tube; a41-guide groove; a411-serrated portion; 412-crushing wheel; 4121-crushing teeth; 4122-fixed frame; a412-limiting groove; 413-limiting column; a4121-near-ground portion; a4122-far-ground portion;

[0073] 5-fixed gear; 51-rotating gear; 52-gear rod; 53-toothed disc;

[0074] 6-positioning structure; 61-fixing rod; 62-positioning rod; 63-gripping block; 64-threaded block; a6-air pressure chamber; 66-resistance block; a61-guide part; 67-hose. DETAILED DESCRIPTION

[0075] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0076] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0077] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0078] It should be noted that the modifications of "one" and "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0079] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0080] Reference Figure 1-9 , an extraction device for rapid soil detection, comprising: a base 1, a moving part 2, a fixed seat 11, a sampling rod 3, a drill bit 31, and an extraction mechanism 4;

[0081] The base 1 is constructed as a rectangular metal plate, and a cylindrical fixing seat 11 is welded on the upper surface of the base 1; a moving member 2 is arranged at the bottom of the base 1, and the moving member 2 is a roller, a crawler or other component that can drive the base 1 to move;

[0082] Specifically, the end surface of the fixed seat 11 is axially penetrated to form a movable groove a11, and the sampling rod 3 is arranged in the movable groove a11 along the axial direction of the movable groove a11; more specifically, a drill bit 31 is arranged at the end of the sampling rod 3; more specifically, a support plate 12 is movably arranged on the fixed seat 11 along the axial direction of the fixed seat 11; a threaded rod 13 fixedly connected to the end of the sampling rod 3 is rotatably arranged on the surface of the support plate 12; wherein the threaded rod 13 is threadedly connected to the sealing cover at the notch of the movable groove a11; more specifically, the surface of the fixed seat 11 is axially concave to form a limiting hole a12; a support rod 121 for supporting the support plate 12 is movably arranged on the inner wall of the limiting hole a12; wherein the bottom of the support rod 121 is connected to the bottom of the limiting hole a12 by an elastic member;

[0083] Through the above structure, a driver is arranged on the support plate 12 to drive the threaded rod 13 to rotate, so that the threaded rod 13 can drive the sampling rod 3 to rotate and make the sampling rod 3 drill into the ground.

[0084] Specifically, an extraction mechanism 4 is provided in the sampling rod 3 for taking soil from the side wall of the borehole formed by the drill bit 31; the extraction mechanism 4 is composed of a sampling structure 41 and a screw feeder 42;

[0085] Specifically, a feeding cavity a3 for accommodating the screw feeder 42 is formed inside the sampling rod 3, and the screw feeder 42 is rotatably arranged in the feeding cavity a3; more specifically, a rotating rod 421 fixedly connected to the end of the screw feeder 42 is rotatably arranged inside the threaded rod 13; and is located on the support plate 12 and connected to the threaded rod 13 through a docking structure;

[0086] More specifically, the docking structure of the docking mechanism is composed of a first toothed disc 53422 provided on the threaded rod 13 and a second toothed disc 53423 provided on the rotating rod 421; the first toothed disc 53422 has a greater diameter than the second toothed disc 53423 and is distributed up and down in the axial direction; the surface of the support plate 12 is also provided with a docking gear 424 respectively meshing with the first toothed disc 53422 and the second toothed disc 53423;

[0087] Specifically, a slide groove a42 is set on the surface of the support plate 12, and a slider 425 is movably set on the inner wall of the slide groove a42 to rotate with the docking gear 424; more specifically, moving the slider 425 can make the docking gear 424 engage with the first toothed disc 53422 or the second toothed disc 53423; in this way, the separate operations of punching the extraction rod and rotating the screw feeder 42 can be realized.

[0088] More specifically, the fixing seat 11 forms a sample cavity a111 for accommodating soil samples; the inner wall portion of the sample cavity a111 penetrates into the feeding cavity a3 to form a feeding slot a112, and the feeding slot a112 extends along the circumferential direction of the feeding cavity a3 for one circle; wherein the inner wall portion of the feeding cavity a3 penetrates to the outside to form a feed hole a31, and the feed hole a31 has a central axis, and the central axis intersects with the central axis of the feeding cavity a3 on the same plane and forms an acute angle; a feed extension tube 32 is movably arranged on the inner wall of the feed hole a31, and the feed extension tube 32 is connected to the inside of the feed hole a31 through an elastic member; the elastic member can be a spring, which always gives the feed extension tube 32 elasticity away from the feed hole a31; with such a configuration, after the material taking rod moves, when the feed extension tube 32 corresponds to the feeding slot a112, the feed extension tube 32 is inserted into the sample cavity a111 under the action of the elastic member;

[0089] More specifically, a chamfer is formed at the notch of the feed slot a112. When the sampling rod 3 is reset, the outer wall of the feed extension tube 32 abuts against the chamfered surface, so that the feed extension tube 32 is retracted into the feed discharge hole a31.

[0090] In some embodiments, the side wall of the sampling rod 3 is arranged with a sampling structure 41 of the same structure in the axial direction, and the arrangement of the structure can capture soil samples of different soil layers at one time; specifically, the sampling structure 41 includes: a sampling tube 411, a crushing wheel 412, and a rotating assembly;

[0091] Specifically, the inner wall of the feeding cavity a3 is radially penetrated to form a guide groove a41, and the sampling tube 411 is movably arranged in the guide groove a41, so that the sampling tube 411 can slide along the extension direction of the guide groove a41 to approach or move away from the soil layer; more specifically, a sawtooth portion a411 is formed at the end of the sampling tube 411, and when the sampling tube 411 rotates, the sawtooth portion a411 can facilitate insertion into the soil layer;

[0092] Specifically, a crushing wheel 412 is arranged on the inner wall of the sampling tube 411, and a conical crushing tooth 4121 is formed on the surface of the crushing wheel 412; after the sampling tube 411 is inserted into the soil layer, the crushing wheel 412 will contact the outer wall of the soil layer and rotate; thus, the soil on the surface of the soil layer can be scraped into the sampling tube 411; the arrangement of the crushing wheel 412 can adapt to soil with high hardness, thereby improving the adaptability of extraction;

[0093] More specifically, the inner wall of the sampling tube 411 forms a fixing frame 4122, and a plurality of fixing frames 4122 are arrayed along the circumferential direction of the sampling tube 411, and the distances between two adjacent fixing frames 4122 and the serration portion a411 in the axial direction of the sampling tube 411 are different; the fixing frame 4122 extends on the inner wall of the sampling tube 411 toward the serration portion a411 and is radially inclined during the extension process; a crushing wheel 412 is arranged at the end of the fixing frame 4122, and the diameters of two adjacent crushing wheels 412 are different; such an arrangement can improve the crushing effect.

[0094] More specifically, a limiting groove a412 is formed on the outer wall of the sampling tube 411 along the circumferential direction, and the limiting groove a412 is arranged in a wave shape on the outer wall of the sampling tube 411; a limiting column 413 embedded in the limiting groove a412 is formed on the inner wall of the guide groove a41; under the action of the rotating assembly, the sampling tube 411 will rotate, and during the rotation process, the limiting column 413 will slide along the extension direction of the limiting groove a412. Since the limiting column 413 is fixed on the inner wall of the guide groove a41, it can only make the sampling tube 411 reciprocate, so as to realize that the sawtooth portion a411 is close to and away from the soil wall;

[0095] In some embodiments, the limiting groove a412 forms arc-shaped near-ground portions a4121 and far-ground portions a4122 on both sides of the sampling tube 411 in the axial direction; the near-ground portions a4121 and the far-ground portions a4122 are arranged in a circumferential array along the circumferential direction of the sampling tube 411; wherein the distances between the surfaces of two adjacent near-ground portions a4121 and the end wall of the sampling tube 411 are different; such an arrangement enables the sampling tube 411 to be inserted further into the soil each time it moves; thus, deeper soil can be dug;

[0096] In some embodiments, the rotating assembly includes: a fixed gear 5, a rotating gear 51, a gear rod 52, and a gear plate 53;

[0097] Specifically, a fixed gear 5 is fixedly arranged on the outer wall of the sampling tube 411; a rotating gear 51 is rotatably arranged in the sampling rod 3, and the rotating gear 51 is fixedly connected to the rotating rod 421, so that the rotation of the rotating rod 421 can drive the rotation of the rotating gear 51; a gear rod 52 is rotatably arranged in the sampling rod 3, and one end of the gear rod 52 is meshed with the rotating gear 51, and the other end is arranged on a toothed disc 53 meshed with the fixed gear 5;

[0098] More specifically, the toothed disc 53 is arranged in a circular array along the circumferential direction of the gear rod 52 on the side wall of the gear rod 52; the toothed disc 53 is fan-shaped and radially movable on the side wall of the gear rod 52; and is connected by an elastic member; the setting of the elastic member can make the toothed disc 53 always mesh with the fixed gear 5, so that it can always rotate during the movement of the sampling tube 411.

[0099] In another preferred embodiment, a positioning structure 6 is further provided at the bottom of the base 1;

[0100] Specifically, the positioning structure 6 includes: a fixing rod 61, a positioning rod 62, and a gripping block 63;

[0101] Specifically, a fixing rod 61 is fixed to the bottom wall of the base 1, and the moving member 2 is arranged on the side wall of the fixing rod 61; a positioning rod 62 is axially movable in the fixing rod 61, and the bottom of the positioning rod 62 is a cone that can be inserted into the ground;

[0102] Specifically, a sliding groove for guiding the positioning rod 62 to approach and move away from the ground surface is formed in the fixing rod 61. Preferably, the positioning structure 6 is arranged on the surrounding surface of the four corners of the bottom of the base 1, and a threaded block 64 is arranged on the inner wall of the sliding groove and is rotatably engaged with the threaded groove; the four threaded blocks 64 are connected by a synchronous belt or chain, and the motor drives the chain to rotate so as to simultaneously drive the four threaded blocks 64 to rotate, so that the positioning rod 62 can be inserted into the soil synchronously;

[0103] More specifically, a pneumatic chamber a6 is provided in the positioning rod 62, and a gripping block 63 is movably provided on the inner wall of the pneumatic chamber a6; the gripping block 63 is arranged in an array along the circumferential direction of the pneumatic chamber a6; wherein a resisting block 66 that resists the gripping block 63 is movably provided in the pneumatic chamber a6; wherein the inner wall of the pneumatic chamber a6 penetrates to the outside to form a guide portion a61 for guiding the movement of the gripping block, and the inner wall of the guide portion a61 is connected to the surface of the gripping block 63 by a spring; the guide portion a61 has a central axis, and the central axis intersects with the axis of the pneumatic chamber a6 in the same plane and forms an arbitrary angle, and the preferred angle is 135°;

[0104] Specifically, the end of the air pressure chamber a6 is connected to the bottom of the limiting hole a12 through a hose 67, so that when the support rod 121 moves downward, air pressure can be generated in the limiting hole a12, which is then transmitted to the air pressure chamber a6 to drive the resistance block 66 to move, so that it contacts the end side of the gripping block 63, and then drives the gripping block 63 to be inserted into the soil, thereby further achieving limitation.

[0105] The above descriptions are only some preferred embodiments of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in the embodiments of the present disclosure (but not limited to) and the technical solutions formed.

Claims

1. An extraction device for rapid soil detection, comprising: Base; A moving member, disposed at the bottom of the base, and used to drive the base to move; A fixing seat, arranged at the upper end of the base; It is characterized by: The extraction device for rapid soil detection also includes: A sampling rod, movably arranged on the fixed seat; A drill bit, fixedly mounted on the bottom end of the sampling rod; An extraction mechanism, disposed in the sampling rod, for extracting soil; Wherein, the extraction mechanism is composed of a sampling structure arranged on the side wall of the sampling rod and a screw feeder rotatably arranged inside the sampling rod; The sampling structure comprises: A sampling tube is arranged on the sampling rod so as to move along the radial direction of the sampling rod; A plurality of crushing wheels are arranged in the sampling tube; A rotating assembly, disposed in the sampling tube, for driving the sampling tube to rotate; Wherein, the end of the sampling tube forms a sawtooth portion; the inner wall of one end of the sampling tube away from the sawtooth portion forms a guide portion, and the guide portion is connected to the screw feeder; The interior of the sampling rod forms a feeding cavity for accommodating the screw feeder; The inner wall of the feeding cavity is radially penetrated to form a guide groove for the sampling tube to move and set; The outer wall of the sampling tube is formed with a limiting groove along the circumferential direction, and the limiting groove is arranged in a wave shape on the outer wall of the sampling tube; The inner wall of the guide groove forms a limiting column embedded in the limiting groove; The limiting groove forms arc-shaped near-ground part and far-ground part on both sides of the sampling tube in the axial direction respectively; The proximal portion and the distal portion are arranged in a circumferential array along the circumferential direction of the sampling tube; Wherein, the distances between the surfaces of two adjacent ground-proximal portions and the end wall of the sampling tube are different; The inner wall of the sampling tube forms a fixing frame; The crushing wheel is rotatably arranged at the end of the fixing frame; The surface of the crushing wheel forms conical crushing teeth; Wherein, the fixing frame extends from the inner wall of the sampling tube toward the direction close to the sawtooth portion and tilts radially during the extension process; The rotating assembly comprises: A fixed gear, fixedly mounted on the outer wall of the sampling tube; A rotating gear rotatably disposed in the sampling tube; A gear rod, rotatably disposed in the sampling rod, one end of which is meshed with the rotating gear; A plurality of gear plates, radially movable and arranged at the other end of the gear rod, and meshing with the fixed gear; Wherein, the toothed discs are arranged in a circumferential array along the circumferential direction of the gear rod; and are connected to the gear rod through an elastic member; The fixing seat forms a sample cavity for accommodating a soil sample; The inner wall portion of the sample cavity penetrates into the feeding cavity to form a feeding trough; The inner wall portion of the feeding cavity penetrates to the outside to form a feeding hole; The inner wall of the feeding hole is movably provided with a feeding extension pipe; Wherein, the material extension tube is connected to the inside of the material discharge hole through an elastic member; The fixing seat is provided with a support plate which can move along the axial direction of the fixing seat; A threaded rod fixedly connected to the end of the sampling rod is rotatably arranged on the surface of the support plate; A rotating rod rotatably arranged inside the threaded rod and fixedly connected to the end of the screw feeder; Wherein, a driver for driving the threaded rod and the rotating rod is arranged on the support plate; The surface of the fixing seat is axially concave to form a limiting hole; A support rod is movably arranged on the inner wall of the limiting hole to support the support plate; Wherein, the bottom of the support rod is connected to the bottom of the limiting hole through an elastic member; The end surface of the fixed seat is axially penetrated to form a moving groove, and the sampling rod is arranged in the moving groove along the axial direction of the moving groove.

2. The extraction device for rapid soil detection according to claim 1, characterized in that: A butt joint structure for connecting the rotating rod and the threaded rod is disposed on the surface of the support plate; The docking structure is composed of a first toothed disc arranged on the threaded rod and a second toothed disc arranged on the rotating rod; The diameter of the first toothed disc is greater than the diameter of the second toothed disc; The surface of the support plate is provided with a docking gear that meshes with the first gear plate and the second gear plate; Wherein, the docking gear is connected with the driver.

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