A soil sampling device

Abstract

The present invention relates to the technical field of soil sampling, and in particular to a soil sampling device. The present invention comprises: a bracket, a sampling assembly for cleaning the surface soil and sampling, and a moving assembly for driving the bracket to move; the sampling assembly comprises: a sampling barrel installed on the bracket, a limiter for guiding the moving path of the sampling barrel, a power source for driving the sampling barrel to take samples, a push-out member for pushing the soil sampled by the sampling barrel out of the sampling barrel, a storage member for storing the soil pushed out by the push-out member, and a cleaning and cutting member for pushing away debris on the soil surface before sampling and cutting off the plant roots during sampling. When sampling the soil, the present invention can automatically cut off the plant roots while sampling, saving time and effort.

Description

Technical Field

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

[0002] Existing soil sampling devices are usually handheld electric sampling devices or handheld non-electric sampling devices. Handheld electric sampling devices are often heavy due to built-in motors, batteries and other components, making them inconvenient to carry. They may also be inflexible and inconvenient to operate due to weight issues. For handheld non-electric sampling devices, if they rely on military shovels or pure manual digging, especially to cut off plant roots in the soil, it often requires a large amount of manpower, and the digging process will be relatively time-consuming and physically demanding.

[0003] For example, the utility model with application number CN202321816391.5 discloses a portable small shrub root sampler, including a support rod, both ends of the support rod are rotatably connected with a connection block, the ends of the two connection blocks away from the support rod are detachably mounted with a sampler and a shovel, both sides of the two connection blocks are provided with sliding grooves, and the inner walls of the plurality of sliding grooves are slidably connected with sliders. The above utility model has the advantages that: by rotating the connection block, it is convenient to drive the sampler or shovel to rotate with the connection block, so as to facilitate sampling of the root system of the small shrub, by sliding the U-shaped positioning plate, it is convenient for the U-shaped positioning plate to drive the slider to slide inside the sliding groove, so that the connection block and the support rod are fixed to each other, and by pushing the positioning rod to be inserted into the inside of the positioning hole, it is convenient to limit the position of the U-shaped positioning plate, so as to achieve the effect of making it easier to carry the sampler for sampling the soil.

[0004] However, the manual method used in this patent to cut off the plant roots is time-consuming and labor-intensive, and the work efficiency is relatively low.

[0005] Therefore, it is necessary to provide a new technical solution to overcome the above-mentioned defects. Summary of the invention

[0006] The object of the present invention is to provide a soil sampling device which can effectively solve the above technical problems.

[0007] In order to achieve the purpose of the present invention, the following technical scheme is adopted:

[0008] A soil sampling device comprises: a support, a sampling component for cleaning the surface soil and sampling, and a moving component for driving the support to move;

[0009] The sampling assembly comprises: a sampling barrel mounted on the bracket, a stopper guiding the moving path of the sampling barrel, a power source driving the sampling barrel to take samples, a push-out member pushing the soil sampled by the sampling barrel out of the sampling barrel, and a cleaning and cutting member pushing away debris on the soil surface before sampling and cutting off plant roots during sampling; the sampling barrel is composed of a connecting plate and an arc-shaped collecting plate mounted on the connecting plate; the connecting plate is connected to the output end of the power source; the cleaning and cutting member is hinged to the bottom of the arc-shaped collecting plate;

[0010] A mounting groove is provided on the side of the cleaning and cutting member, a scraper is hinged in the mounting groove, and a reset member is connected between the scraper and the mounting groove;

[0011] The scraper is in a horizontal state in a natural state.

[0012] Furthermore, the bracket is composed of a vehicle body, a vertical pole installed on the top of the vehicle body, and a support plate erected on the top of the vertical pole; the power source is installed on the support plate.

[0013] Furthermore, the ejection member is composed of a connecting plate, an upper pushing shovel slidably mounted on the connecting plate, and a lower pushing shovel rotatably mounted on the connecting plate.

[0014] Furthermore, a placement rack is provided on the unloading side of the ejection member; the placement rack is installed on the vertical pole; and a plurality of placement holes are opened on the placement rack.

[0015] Furthermore, a limit plate is provided below the lower push shovel, and the limit plate is slidably connected to the lower push shovel.

[0016] Furthermore, a guide groove is provided inside the limiter, and the guide groove is composed of at least a vertical groove and a spiral groove which are connected in sequence from top to bottom;

[0017] The sampling tube is slidably connected to the guide groove.

[0018] When the sampling tube slides downward along the guide groove, it first drives the cleaning and cutting member to push away the debris on the soil surface, and then the sampling tube is inserted into the soil to take samples, and drives the cleaning and cutting member to cut off the plant roots.

[0019] Furthermore, the limiting member is provided with an opening, and the opening is staggered with the vertical slot;

[0020] A driven rack is slidably installed in the opening along the horizontal direction, and the driven rack is meshed with a gear; the driven rack is fixedly connected to the ejector;

[0021] An active rack is slidably mounted on the travel of the limiter, and the active rack is meshed with the gear.

[0022] Furthermore, the moving assembly includes: a moving wheel rotatably mounted on the bottom of the vehicle body, and a motor driving the moving wheel to rotate, wherein the motor is mounted on the bottom of the vehicle body.

[0023] Furthermore, the bottom of the sampling tube is also coaxially rotatably connected to a reinforcement piece; a limit rod is slidably connected to the side wall of the reinforcement piece, and the limit rod is fixedly connected to the bottom of the vehicle body.

[0024] Furthermore, the reinforcement member is composed of two transverse reinforcement plates arranged opposite to each other in the transverse direction; two longitudinal reinforcement plates arranged opposite to each other in the longitudinal direction; a connecting block connecting the transverse reinforcement plates and the longitudinal reinforcement plates; and a floating plate installed on the transverse reinforcement plates and the longitudinal reinforcement plates.

[0025] Compared with the prior art, the present invention has the following beneficial effects: when sampling soil, the present invention can automatically cut off plant roots while sampling, saving time and labor. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0027] Figure 1 It is a schematic diagram of the axial side of the present invention;

[0028] Figure 2 It is a structural schematic diagram of the present invention;

[0029] Figure 3 It is a structural schematic diagram of the state where the scraper in the sampling assembly of the present invention is retracted into the installation groove;

[0030] Figure 4 It is a structural schematic diagram of the state where the scraper in the sampling tube of the present invention is retracted into the installation groove;

[0031] Figure 5 It is a schematic diagram of the state where the scraper in the sampling tube of the present invention is retracted into the installation groove;

[0032] Figure 6 for Figure 1 A partial enlarged view of part A;

[0033] Figure 7 It is a plan view of the scraper of the present invention extending out of the mounting groove;

[0034] Figure 8 is a plan view of the guide groove of the present invention;

[0035] Fig. 9 It is a structural schematic diagram of the state where the scraper of the sampling tube of the present invention is retracted into the installation groove at another angle;

[0036] Fig.10 It is a schematic structural diagram of the reinforcement member of the present invention.

[0037] In the figure: 1, bracket; 2, sampling assembly; 3, moving assembly; 11, vehicle body; 12, upright pole; 13, support plate; 21, sampling tube; 22, stopper; 23, power source; 24, ejector; 25, cleaning and cutting member; 27, placement rack; 271, placement hole; 272, fixing groove; 273, clamping block; 211, cylinder body; 212, connecting plate; 2111, arc collecting plate; 251, mounting groove; 252, scraper; 2 21. Guide groove; 241. Connecting plate; 242. Upper push shovel; 243. Lower push shovel; 244. Limit plate; 222. Opening; 2221. Driven rack; 2222. Gear; 2223. Active rack; 31. Moving wheel; 32. Motor; 111. Storage box; 112. Reinforcement member; 1121. Horizontal reinforcement plate; 1122. Longitudinal reinforcement plate; 1123. Connecting block; 1124. Limit rod; 1125. Floating plate. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are partial embodiments of the present invention, rather than all embodiments.

[0039] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention. When a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a centered component. When a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centered component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a centered component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0040] like Figures 1 to 10As shown, the present invention provides a soil sampling device, comprising: a bracket 1; a sampling component 2 for cleaning the surface of the surface soil and performing soil sampling after cleaning the surface soil; the sampling component 2 is located at the middle position of the top of the bracket 1; a moving component 3 for driving the bracket 1 to move, and the moving component 3 is located at the bottom of the bracket 1.

[0041] The bracket 1 is composed of a vehicle body 11 , four vertical poles 12 installed on the top of the vehicle body 11 , and a support plate 13 erected on the top of the vertical poles 12 .

[0042] The sampling assembly 2 includes: a sampling tube 21, a limiting member 22 sleeved with the sampling tube 21; the limiting member 22 is used to guide the moving path of the sampling tube 21 to prevent over-sampling or inaccurate sampling position, and ensure the accuracy and consistency of each sampling; a power source 23 that drives the sampling tube 21 to move up and down, and the power source 23 is preferably a telescopic cylinder; a push-out member 24 that pushes the soil sampled by the sampling tube 21 out of the sampling tube 21, and the design of the push-out member 24 can reduce manual sampling and is more convenient, and the formation of the push-out member 24 is fixed, so that the position of each sampling can be fixed to ensure the consistency of sampling; a storage member for storing the soil sample pushed out by the push-out member 24; a cleaning and cutting member 25 that pushes away debris on the soil surface before sampling; the telescopic cylinder is installed on the top of the support plate 13; the push-out member 2 A placing rack 27 is provided on the unloading side, and the placing rack 27 is installed on the two upright poles 12 on the unloading side. A plurality of placing holes 271 are provided on the placing rack 27, and the placing holes 271 are used to place storage components. The top wall of the placing holes 271 first extends upward and then outward, and a fixing groove 272 is provided thereon, and a clamping block 273 is slidably installed in the fixing groove 272. A spring is connected between the clamping block 273 and the fixing groove 272, so that the clamping block 273 can clamp the fixing groove 272, thereby facilitating the fixing of the storage components. The height of the placing holes 271 is lower than the height of the ejecting member 24, so that the ejecting member 24 can be pushed into the storage component. The storage component is a storage box or a storage bag, which can be selected according to needs, and is used to protect the soil samples from being contaminated and deteriorated during transportation and storage.

[0043] The sampling tube 21 is composed of a tube body 211 and a connecting plate 212 coaxially mounted on the top of the tube body 211, and the connecting plate 212 is fixedly connected to the piston rod of the telescopic cylinder; the tube body 211 is connected by two arc-shaped collecting plates 2111, and a collecting chamber is formed between the two arc-shaped collecting plates 2111 for collecting soil; the connecting plate 212 is composed of an upper plate body and a lower plate body rotatably connected to the upper plate body; the connecting plate 212 is used to connect the two arc-shaped collecting plates 2111 on the one hand, and to enable the tube body 211 to rotate relative to the piston rod on the other hand, so as to avoid the tube body 211 being unable to rotate due to a hard connection. The bottom of the arc-shaped collecting plate 2111 is conical, which is convenient for inserting into the soil; the arc-shaped design rather than the cylindrical design reduces the resistance of inserting into the soil, reduces the possibility of interference from roots or other impurities in the soil, makes it easier to insert into the soil, and facilitates the removal of soil samples from the collecting chamber, saving operation time.

[0044] The cleaning and cutting piece 25 is hinged at the bottom of the arc-shaped collecting plate 2111, and the cutting surface of the cleaning and cutting piece 25 is lower than the bottom surface of the arc-shaped collecting plate 2111, and is used to cut off the plant roots on the moving path of the arc-shaped collecting plate 2111; a mounting groove 251 is provided on the side of the cleaning and cutting piece 25, and a scraper 252 is hinged in the mounting groove 251, and a reset piece is connected between the scraper 252 and the mounting groove 251, and the reset piece is a torsion spring or a spring. In the natural state, the scraper 252 is in a horizontal state and is lower than the cutting surface of the cleaning and cutting piece 25; during the rotation of the arc-shaped collecting plate 2111, the scraper 252 pushes the debris outward, and during the downward movement of the arc-shaped collecting plate 2111, the scraper 252 is forced to rotate upward and retract into the mounting groove 251. At the same time, the cleaning and cutting piece 25 cuts off the plant roots to collect soil samples on the one hand, and drives the cleaning and cutting piece 25 to cut off the plant roots on the other hand.

[0045] The limiting member 22 is in the shape of a rectangular parallelepiped, and a cylindrical through hole is provided inside the limiting member 22 along the length direction, and a guide groove 221 is provided on the inner wall of the cylindrical through hole, and the guide groove 221 is composed of at least a vertical groove section and a spiral section connected in sequence from top to bottom; the pitch of the spiral section gradually increases from top to bottom; a ball is rollingly installed on the sampling tube 21, and the ball can roll along the above-mentioned groove path in sequence, thereby guiding the moving path of the sampling tube 21 through the above-mentioned groove; the limiting member 22 can play a guiding role for the arc-shaped collecting plate 2111, and can also play a limiting role for the arc-shaped collecting plate 2111, so as to prevent the arc-shaped collecting plate 2111 from being displaced or deformed by force.

[0046] The pusher 24 is used to push the soil out of the sampling tube by a push shovel; the pusher 24 is composed of a connecting plate 241, an upper push shovel 242 slidably mounted on the connecting plate 241, and a lower push shovel 243 rotatably mounted on the connecting plate 241; a waist-shaped hole is provided on the connecting plate 241, and a threaded hole is provided on the upper push shovel 242. The upper push shovel 242 and the connecting plate 241 are connected by bolts, and the distance between the upper push shovel 242 and the lower push shovel 243 is adjusted by adjusting the relative position between the upper push shovel 242 and the waist-shaped hole, thereby adjusting the size of the pushed soil block; the lower push shovel 243 is slidably connected to a limit plate 244, and the limit plate 244 is fixedly mounted on the vertical pole 12. When the lower push shovel 243 slides beyond the limit plate 244, it swings downward due to gravity. If the soil sticks to the lower push shovel 243, it may not swing. At this time, the soil or the lower push shovel 243 can be manually moved.

[0047] When the piston rod of the telescopic cylinder is extended, it drives the sampling barrel 21 to slide along the guide groove 221 in sequence; in the process of the sampling barrel 21 moving downward along the vertical groove, it drives the scraper 252 to slide downward, so that the scraper 252 is close to the ground; then the sampling barrel 21 rotates along the spiral groove, driving the cleaning and cutting piece 25 to rotate, and the scraper 252 at the bottom of the cleaning and cutting piece 25 pushes the debris accumulated on the soil surface to the side, so that the soil to be sampled is exposed; then the sampling barrel 21 rotates and moves downward to be inserted into the soil. At the same time, the cleaning and cutting piece 25 cuts off the plant roots on the path of the sampling barrel 21; finally, as the sampling barrel 21 rotates, the soil enters the sampling barrel 21, and the sampling of the soil is completed.

[0048] The limiting member 22 is provided with an opening 222, which is staggered with the vertical groove, and a driven rack 2221 is installed in the opening 222 along the horizontal direction, and the driven rack 2221 is meshed with a gear 2222; the driven rack 2221 is fixedly connected to the ejection member 24, and is used to drive the ejection member 24 to slide synchronously; an active rack 2223 is installed along the vertical direction on the limiting member 22, and a buffer spring is connected between the active rack 2223 and the limiting member 22, and a protrusion is hinged on the active rack 2223, and a high-strength spring is installed inside the protrusion. The middle protrusion abuts against the arc-shaped collecting plate 2111. When the sliding of the arc-shaped collecting plate 2111 exceeds the bearing capacity of the high-strength spring, the protrusion swings, so that when the arc-shaped collecting plate 2111 moves downward, it abuts against the active rack 2223, driving the active rack 2223 to move downward; the active rack 2223 is meshed with the gear 2222, used to drive the gear 2222 to rotate, and then drive the driven rack 2221 to rotate; the placement rack 27 is installed at the protruding end of the ejection member 24, and the top of the placement rack 27 is lower than the ejection member 24. When the ejection member 24 pushes the soil, the soil falls into the storage member.

[0049] When the sampling barrel 21 moves downward along the lower vertical groove, the sampling barrel 21 also drives the active rack 2223 to move downward, thereby driving the gear 2222 to rotate, thereby driving the driven rack 2221 away from the sampling barrel 21, so that the ejection member 24 is away from the sampling barrel 21; when the sampling barrel 21 moves in the opposite direction, it drives the ejection member 24 to insert into the sampling barrel 21, thereby pushing the soil collected in the sampling barrel 21 from the sampling barrel 21 to the storage member.

[0050] In a soil environment with high humidity, the adhesion between soil particles is weak and the soil stability is poor; when the vehicle body 11 is affected by external force or its own weight, it is easy to move with the deformation of the soil, which may change the position and depth of the sampling point, thereby affecting the accuracy of the sampling; for example, when sampling in some paddy fields or swamps, if the vehicle body 11 does not have sufficient support and stabilization measures, position deviation may occur, resulting in the collected samples not accurately reflecting the soil conditions of the predetermined area; for soft mud and sand environments, the mud and sand are more fluid, and the vehicle body 11 is more likely to sink into it, resulting in position changes.

[0051] After the sampling tube is inserted, the surrounding mud and sand may collapse into the sampling tube due to the lack of sufficient supporting structure, which may cause the mixing of materials that do not belong to the predetermined sampling layer, causing deviations in the sampling results. For example, when sampling on a beach by a river or on the edge of a desert, this situation may occur, resulting in the collected samples containing too much fine sand from the upper layer.

[0052] At the bottom of the cylinder 211, and at a position above the cleaning and cutting piece 25, there is also a reinforcing piece 112 coaxially rotatably connected, and the reinforcing piece 112 is used to preliminarily reinforce the vehicle body 11 before the cylinder 211 takes samples; the reinforcing piece 112 is composed of two transverse reinforcing plates 1121 arranged opposite to each other in the transverse direction, two longitudinal reinforcing plates 1122 arranged opposite to each other in the longitudinal direction, and a connecting block 1123 connecting the above-mentioned reinforcing plates; a connecting hole is opened in the middle of the connecting block 1123, and a bearing is installed in the connecting hole, and the bearing is coaxially connected to the cylinder 211.

[0053] The above-mentioned reinforcement plates are the same. Taking one of the reinforcement plates as an example for explanation, the reinforcement plate consists of a plate body, and a sliding groove is opened on the outer wall of the plate body; a limit rod 1124 is slidably connected to the sliding groove, and the other end of the limit rod 1124 is fixedly connected to the bottom of the vehicle body 11; it is located in the middle of the plate body and is horizontally installed on the side of the plate body. The bottom of the plate body has a gradually narrowing slope to facilitate the insertion of the plate body into the soil.

[0054] When the cylinder 211 moves downward, the reinforcement member 112 is driven to move downward. Since the reinforcement member 112 is located above the cleaning and cutting member 25, the cleaning and cutting member 25 will first clean the debris on the soil surface before the reinforcement member 112 contacts the soil.

[0055] Since the reinforcement 112 is rotatably connected to the cylinder 211 through the bearing, and is slidably connected to the bottom of the vehicle body 11 through the limit rod 1124, the reinforcement 112 is limited by the bearing and the limit rod 1124, so that when the cylinder 211 rotates, the reinforcement 112 moves up and down, and when the reinforcement 112 moves downward, the bottom of the reinforcement plate is inserted into the soil until the floating plate 1125 contacts the soil. The plate body is used to insert into the soil to prevent soil collapse, and the floating plate 1125 is used to preliminarily fix the vehicle body 11; for example, in a clay environment with high humidity, the plate body can prevent the clay from sliding into the sampling cylinder, thereby ensuring the purity and accuracy of the sample in the sampling cylinder; the setting of the floating plate 1125 can increase the contact area with the ground, further improving the stability of the vehicle body 11; in soft sandy soil, the larger area of ​​the floating plate 1125 can disperse the weight of the vehicle body 11 and reduce the possibility of the vehicle body 11 sinking, thereby providing a guarantee for accurate sampling.

[0056] The mobile component 3 includes: a mobile wheel 31 rotatably installed at the bottom of the vehicle body 11, and a motor 32 that drives the mobile wheel 31 to rotate, wherein there are four mobile wheels 31, and the two front wheels are driven by independent motors 32 respectively, and the two rear wheels can be installed with motors 32 or not; the mobile wheel 31 is driven by the rotation of the motor 32, thereby driving the device to move; optionally, a steering gear can also be added to adjust the rotation direction of the mobile wheel 31; the mobile component 3 can be optionally tracked for movement, which is suitable for different outdoor terrains.

[0057] Optionally, a storage box 111 is provided on the top of the frame, and a scraper can be placed in the storage box 111 to clean the inner wall of the sampling tube 21; a water pump, a water tank, and an outdoor power supply can be installed on any side of the top of the vehicle body 11, and the water in the water tank is pumped by the water pump to spray into the sampling tube 21, so as to clean the sampling tube. If there is a water source near the sampling point, water can also be directly drawn from the water source through the water pump; the advantage of cleaning by spraying water is that it is easier to achieve a good cleaning effect when dealing with relatively moist soil or sand.

[0058] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0059] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A soil sampling device, characterized in that: include: A support, a sampling assembly for cleaning the surface soil and taking samples, and a moving assembly for driving the support to move; The sampling assembly includes: a sampling barrel mounted on the bracket, a stopper guiding the moving path of the sampling barrel, a power source driving the sampling barrel to take samples, a push-out member pushing the soil sampled by the sampling barrel out of the sampling barrel, and a cleaning and cutting member pushing away debris on the soil surface before sampling and cutting off the plant roots during sampling; The sampling tube is composed of a connecting disk and an arc-shaped collecting plate installed on the connecting disk; the connecting disk is connected to the output end of the power source; The cleaning and cutting member is hinged to the bottom of the arc-shaped collecting plate; A mounting groove is provided on the side of the cleaning and cutting member, a scraper is hinged in the mounting groove, and a reset member is connected between the scraper and the mounting groove; The scraper is in a horizontal state in a natural state; The bracket is composed of a vehicle body, a vertical pole installed on the top of the vehicle body, and a support plate erected on the top of the vertical pole; the power source is installed on the support plate; The push-out member is composed of a connecting plate, an upper push shovel slidably mounted on the connecting plate, and a lower push shovel rotatably mounted on the connecting plate; A placing rack is provided on the unloading side of the ejector; the placing rack is installed on the vertical pole; a plurality of placing holes are opened on the placing rack; A limit plate is provided below the lower push shovel, and the limit plate is slidably connected to the lower push shovel; A guide groove is provided inside the limiter, and the guide groove is composed of at least a vertical groove and a spiral groove which are connected in sequence from top to bottom; The sampling tube is slidably connected to the guide groove. When the sampling tube slides downward along the guide groove, it first drives the cleaning and cutting member to push away the debris on the soil surface, and then the sampling tube is inserted into the soil to take samples, and drives the cleaning and cutting member to cut off the plant roots; The limiting member is provided with an opening, and the opening is staggered with the vertical slot; A driven rack is slidably installed in the opening along the horizontal direction, and the driven rack is meshed with a gear; the driven rack is fixedly connected to the ejector; An active rack is slidably mounted on the travel of the limiter, and the active rack is meshed with the gear.

2. A soil sampling device according to claim 1, characterized in that: The moving assembly includes: a moving wheel rotatably mounted on the bottom of the vehicle body, and a motor driving the moving wheel to rotate, wherein the motor is mounted on the bottom of the vehicle body.

3. A soil sampling device according to claim 1 or 2, characterized in that: The bottom of the sampling tube is also coaxially rotatably connected to a reinforcement piece; a limiting rod is slidably connected to the side wall of the reinforcement piece, and the limiting rod is fixedly connected to the bottom of the vehicle body.

4. A soil sampling device as claimed in claim 3, characterized in that: The reinforcement member is composed of two transverse reinforcement plates arranged opposite to each other in the transverse direction; two longitudinal reinforcement plates arranged opposite to each other in the longitudinal direction; a connecting block connecting the transverse reinforcement plates and the longitudinal reinforcement plates; and a floating plate installed on the transverse reinforcement plates and the longitudinal reinforcement plates.

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