A soil sampling device for land planning surveys

Abstract

The utility model relates to a kind of soil sampling device for land planning survey, including the cylindrical drill bit being set on soil sampling device, the sampling cylinder for accommodating sample is provided on the cylindrical drill bit, connecting assembly for connecting soil sampling device is provided on the sampling cylinder.This soil sampling device for land planning survey, by arc side plate and barrel closure, form complete columnar cavity, so that soil sample forms cylindrical structure in cavity, by external force driving arc side plate rotates around the hinge point of connecting strip, open outward along the arc slot of barrel, make sampling cavity from closed columnar become open state, completely destroy the stick friction surface of humid soil and inner wall, greatly reduce sample releasing resistance, and the open state sampling cylinder is more convenient for cleaning residual soil, by the double fixation of thread and convex-concave engagement, completely eliminate the relative slack of sampling cylinder and positioning assembly in sampling rotation process, ensure transmission synchronization, avoid sample breakage or sampling depth deviation due to structure shaking.

Description

Technical Field

[0001] This utility model relates to the field of land surveying technology, specifically to a soil sampling device for land planning and surveying. Background Technology

[0002] Land surveying is a core technical task in the preliminary stage of land use master planning. Essentially, it involves obtaining basic land information through on-site surveys. The core contents of land planning surveys include current status surveys, ownership surveys, and quality surveys. Among them, quality surveys include surveys of topography, soil conditions, hydrological conditions, climatic conditions, and ecological conditions. Typically, when surveying soil conditions, it is necessary to use soil sampling equipment to collect samples on-site, then pre-process the samples, and finally send them to the laboratory for testing and analysis to obtain data and provide a reasonable evaluation.

[0003] In the current technology, when using a soil sampling device for on-site sampling, a tubular drill bit needs to be inserted into the soil, and the soil sampling device needs to be started to rotate the tubular drill bit. The rotating tubular drill bit is used to drill a hole downwards. As the drilling gradually deepens, the sample soil will form a columnar structure inside the tubular drill bit. In practical use, after completing on-site sampling using the soil sampling device, it is necessary to use tools to push out the soil sample from the tubular drill bit. When pushing out the sample, the push plate applies force to the end face of the soil sample, thereby overcoming the friction between the soil sample and the inner wall of the tubular drill bit and removing the soil sample. If the soil sample is relatively wet, the moisture in the wet soil will increase the cohesion between soil particles and form a water film adsorption layer between the soil and the inner wall of the drill bit, which will tightly adhere the soil to the tube wall, turning the original dry friction into viscous friction, making it difficult to push out the soil sample. Moreover, after the sample soil is removed, some soil will adhere to the inner wall of the tubular drill bit, and due to the narrow inner cavity of the tubular drill bit, cleaning is difficult. Therefore, a soil sampling device for land planning and surveying is proposed to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a soil sampling device for land planning and surveying. This device facilitates the extraction of soil samples and solves the problem of having to use tools to push out the soil sample from the tubular drill bit after on-site sampling. When pushing out the sample, a pusher plate applies force to the end face of the soil sample, overcoming the friction between the soil sample and the inner wall of the tubular drill bit. However, if the soil sample is damp, the moisture in the damp soil increases the cohesion between soil particles and forms a water film adsorption layer between the soil and the inner wall of the drill bit, tightly adhering the soil to the tube wall. This transforms the original dry friction into viscous friction, making it difficult to push out the soil sample. Furthermore, after removing the soil sample, some soil adheres to the inner wall of the tubular drill bit, and the narrow inner cavity of the drill bit makes cleaning difficult.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a soil sampling device for land planning and surveying, comprising a cylindrical drill bit disposed on the soil sampling device, wherein the cylindrical drill bit is provided with a sampling tube for containing a sample, and the sampling tube is provided with a connecting component for connecting to the soil sampling device. The sampling cylinder includes a cylinder body threadedly connected to a cylindrical drill bit. The cylinder body is provided with several arc-shaped side plates. Several connecting strips are hinged to the cylinder body, and the other end of the connecting strips is hinged to the arc-shaped side plates. Several arc-shaped grooves adapted to the arc-shaped side plates are opened on the cylinder body. A circular plate is fixedly installed inside the sampling cylinder near the front end. The circular plate is provided with a squeezing component for pushing the sample. The connecting assembly includes a connecting cylinder that is threadedly connected to the cylinder body. The connecting cylinder is provided with a positioning component for engaging the cylinder body, and a connecting shaft for connecting to a soil sampling device is fixedly installed at the front end of the connecting cylinder.

[0006] Furthermore, the extrusion component includes a square column connected to the circular plate, an end plate fixedly connected to the front end of the square column, a spring sleeved on the square column, and a push plate located behind the circular plate fixedly installed at the end of the square column.

[0007] Furthermore, the circular plate is provided with a rectangular groove that is adapted to the square column, and the rectangular groove is slidably connected to the square column. The circular plate is also provided with a number of vent holes.

[0008] Furthermore, the positioning component includes an outer ring sleeved on the outer peripheral wall of the connecting cylinder, the outer ring having a plurality of protrusions connected to the cylinder body, the inner peripheral wall of the outer ring having a plurality of limiting blocks fixedly installed, and the outer peripheral wall of the outer ring having a plurality of support plates fixedly installed.

[0009] Furthermore, the connecting cylinder has several limiting grooves, and the limiting grooves are slidably connected to the limiting blocks. The end of the cylinder body has several grooves, and the grooves are adapted to the protrusions.

[0010] Compared with the prior art, the technical solution of this application has the following beneficial effects: 1. This soil sampling device for land planning and surveying closes with the cylinder body via an arc-shaped side plate and connecting strip to form a complete cylindrical cavity. This allows the soil sample to form a cylindrical structure within the cavity. When driven by external force, the arc-shaped side plate rotates around the hinge point with the connecting strip and opens outward along the arc-shaped groove of the cylinder body, changing the sampling cavity from a closed cylindrical state to an open state. This completely destroys the sticky friction surface between the moist soil and the inner wall, significantly reducing the resistance to sample release. Furthermore, the open state of the sampling cylinder makes it easier to clean up residual soil. 2. The soil sampling device for land planning and surveying, after the connecting cylinder of the connecting component is threadedly connected to the cylinder body, the protrusion of the positioning component is engaged with the groove at the end of the cylinder body, forming a double fixation of thread and convex-concave engagement, which completely eliminates the relative loosening of the sampling cylinder and the drill bit during the sampling rotation, ensures synchronous transmission, and avoids sample breakage or sampling depth deviation due to structural shaking. 3. The soil sampling device for land planning and surveying, by pushing the end plate in the squeezing component, converts the thrust into a thrust on the sample through the square column and push plate until the sample is pushed out of the cavity of the cylinder. Then the end plate is released, and the squeezing component automatically resets under the action of the spring, thereby facilitating the extraction of cylindrical soil samples and reducing the difficulty of operation. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the present utility model. Figure 1 A schematic diagram of the decomposition process; Figure 3 This is a schematic diagram of the unfolded sampling cylinder of this utility model. Figure 4 This is a schematic diagram of the structure of the present utility model. Figure 2 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the extrusion component of this utility model; Figure 6 This is a schematic diagram of the structural connection component of this utility model.

[0012] In the diagram: 1. Cylindrical drill bit; 2. Sampling cylinder; 21. Cylinder body; 211. Groove; 22. Arc-shaped side plate; 23. Connecting strip; 24. Arc-shaped groove; 25. Circular plate; 251. Rectangular groove; 252. Vent hole; 26. Extrusion component; 261. Square column; 262. End plate; 263. Spring; 264. Push plate; 3. Connecting assembly; 31. Connecting cylinder; 311. Limiting groove; 32. Positioning assembly; 321. Outer ring; 322. Protrusion; 323. Limiting block; 324. Support plate; 33. Connecting shaft; Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Example 1: Please refer to Figure 1-6This embodiment of a land planning and surveying soil sampling device includes a cylindrical drill bit 1 disposed on the soil sampling device, a sampling tube 2 disposed on the cylindrical drill bit 1 for containing samples, and a connecting component 3 disposed on the sampling tube 2 for connecting to the soil sampling device.

[0015] Example 2: Please refer to Figure 1-6 Based on Embodiment 1, the sampling cylinder 2 includes a cylinder body 21 threadedly connected to the cylindrical drill bit 1. The cylinder body 21 is provided with several arc-shaped side plates 22. Several connecting strips 23 are hinged to the cylinder body 21, and the other end of the connecting strips 23 is hinged to the arc-shaped side plates 22. Several arc-shaped grooves 24 adapted to the arc-shaped side plates 22 are opened on the cylinder body 21. A circular plate 25 is fixedly installed inside the sampling cylinder 2 near the front end. A squeezing component 26 for pushing the sample is provided on the circular plate 25. The connecting assembly 3 includes a connecting cylinder 31 that is threadedly connected to the cylinder body 21. The connecting cylinder 31 is provided with a positioning assembly 32 for engaging the cylinder body 21. A connecting shaft 33 for connecting to the soil sampling device is fixedly installed at the front end of the connecting cylinder 31.

[0016] The positioning component 32 includes an outer ring 321 sleeved on the outer peripheral wall of the connecting cylinder 31. The outer ring 321 is provided with a number of protrusions 322 connected to the cylinder body 21. A number of limiting blocks 323 are fixedly installed on the inner peripheral wall of the outer ring 321. A number of support plates 324 are fixedly installed on the outer peripheral wall of the outer ring 321. The design of the outer ring and the support plates facilitates manual gripping and adjustment, realizes the rapid sliding of the positioning component, and improves the efficiency of disassembly and assembly of the sampling cylinder.

[0017] In addition, the connecting cylinder 31 is provided with several limiting grooves 311, and the limiting grooves 311 are slidably connected with the limiting block 323. The end of the cylinder body 21 is provided with several grooves 211, and the grooves 211 are adapted to the protrusions 322. The protrusions engage with the grooves of the cylinder body to form a double fixation of thread and convex-concave positioning, which completely eliminates relative rotation during sampling.

[0018] It should be noted that the connecting shaft 33 of the connecting component 3 is a standardized interface design, which can be connected to the main body of common manual and electric soil sampling devices on the market, without the need to customize sampling parts for specific soil sampling devices.

[0019] Using the above technical solution, the cylinder body 21 of the sampling cylinder 2 is threadedly connected to the cylindrical drill bit 1, and the arc-shaped side plate 22 is closed with the cylinder body 21 through the connecting strip 23 to form a complete cylindrical cavity. The cylindrical drill bit 1 and the sampling cylinder 2 rotate and drill down, and the soil enters the cavity formed by the closed arc-shaped side plate 22 and the cylinder body 21. The soil sample forms a columnar structure in the cavity. The arc-shaped side plate 22 is driven by external force to open along the hinge point, increasing the cavity space and breaking the adhesive friction between the soil and the inner wall.

[0020] Example 3: Please refer to Figure 1-6 Based on Embodiment 2, the extrusion component 26 includes a square column 261 connected to the circular plate 25. An end plate 262 is fixedly connected to the front end of the square column 261. A spring 263 is sleeved on the square column 261. A push plate 264 located on the rear side of the circular plate 25 is fixedly installed at the end of the square column 261.

[0021] The circular plate 25 has a rectangular groove 251 that is adapted to the square column 261, and the rectangular groove 251 is slidably connected to the square column 261. The sliding fit between the rectangular groove and the square column restricts the rotation of the square column and ensures the smooth movement of the push plate. The circular plate 25 has several exhaust holes 252, which discharge the air in the cavity during sampling in real time, eliminate negative pressure, and ensure that the soil sample tightly fills the cavity.

[0022] Using the above technical solution, the end plate 262 in the extrusion component 26 is pushed, so that the thrust is converted into a thrust on the sample through the square column 261 and the push plate 264 until the sample is pushed out of the cavity of the cylinder 21. Then the end plate 262 is released, and the extrusion component 26 automatically resets under the action of the spring 263.

[0023] The working principle of the above embodiments is as follows: When using the soil sampling device for land planning and surveying, the body 21 of the sampling cylinder 2 is threadedly connected to the cylindrical drill bit 1, and the arc-shaped side plate 22 is closed with the body 21 through the connecting strip 23 to form a complete cylindrical cavity. The sampling cylinder is connected to the main body of the soil sampling device through the connecting shaft 33 of the connecting component 3, and the positioning component 32 is adjusted so that the protrusion 322 is inserted into the groove 211 of the body to complete the fixation. Start the soil sampling device, which drives the cylindrical drill bit 1 and the sampling cylinder 2 to rotate and drill downwards. The soil enters the cavity formed by the closed arc-shaped side plate 22 and the cylinder body 21, and the soil sample forms a columnar structure in the cavity, thereby completing the soil sampling. After sampling is completed, the sampling cylinder 2 is separated from the cylindrical drill bit 1, the outer ring 321 of the positioning component is pushed so that the protrusion 322 is disengaged from the groove 211, and then the connecting cylinder 31 is rotated to disassemble the connecting component 3 and expose the extrusion component 26. The arc-shaped side plate 22 is opened along the hinge point by external force, which increases the cavity space, breaks the viscous friction between the soil and the inner wall, and pushes the end plate 262 in the extrusion component 26. The thrust is converted into a thrust on the sample through the square column 261 and the push plate 264 until the sample is pushed out of the cavity of the cylinder 21. Then the end plate 262 is released and the extrusion component 26 automatically resets under the action of the spring 263. After the sample is removed, the arc-shaped side plate 22 on the cylinder 21 is in an open state, which facilitates the cleaning of the inner wall of the cylinder 21 and the arc-shaped side plate 22 through the arc-shaped groove 24 to remove residual soil.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A soil sampling device for land planning and surveying, comprising a cylindrical drill bit (1) mounted on the soil sampling device, characterized in that: The cylindrical drill bit (1) is provided with a sampling tube (2) for containing samples, and the sampling tube (2) is provided with a connecting component (3) for connecting the soil sampling device. The sampling tube (2) includes a tube body (21) threadedly connected to a cylindrical drill bit (1). The tube body (21) is provided with several arc-shaped side plates (22). Several connecting strips (23) are hinged to the tube body (21), and the other end of the connecting strips (23) is hinged to the arc-shaped side plates (22). Several arc-shaped grooves (24) adapted to the arc-shaped side plates (22) are opened on the tube body (21). A circular plate (25) is fixedly installed inside the sampling tube (2) near the front end. A squeezing component (26) for pushing the sample is provided on the circular plate (25). The connecting assembly (3) includes a connecting cylinder (31) that is threadedly connected to the cylinder body (21). The connecting cylinder (31) is provided with a positioning assembly (32) for engaging the cylinder body (21). The front end of the connecting cylinder (31) is fixedly installed with a connecting shaft (33) for connecting to the soil sampling device.

2. The soil sampling device for land planning and surveying according to claim 1, characterized in that: The extrusion component (26) includes a square column (261) connected to the circular plate (25), an end plate (262) is fixedly connected to the front end of the square column (261), a spring (263) is sleeved on the square column (261), and a push plate (264) located behind the circular plate (25) is fixedly installed at the end of the square column (261).

3. The soil sampling device for land planning and surveying according to claim 2, characterized in that: The circular plate (25) has a rectangular groove (251) adapted to the square column (261), and the rectangular groove (251) is slidably connected to the square column (261). The circular plate (25) has a plurality of exhaust holes (252).

4. A soil sampling device for land planning and surveying according to claim 1, characterized in that: The positioning component (32) includes an outer ring (321) sleeved on the outer peripheral wall of the connecting cylinder (31). The outer ring (321) is provided with a plurality of protrusions (322) connected to the cylinder body (21). A plurality of limiting blocks (323) are fixedly installed on the inner peripheral wall of the outer ring (321). A plurality of support plates (324) are fixedly installed on the outer peripheral wall of the outer ring (321).

5. A soil sampling device for land planning and surveying according to claim 4, characterized in that: The connecting cylinder (31) has several limiting grooves (311) and the limiting grooves (311) are slidably connected to the limiting block (323). The end of the cylinder body (21) has several grooves (211) and the grooves (211) are adapted to the protrusions (322).

Images