Soil sampling device

Abstract

The utility model relates to the technical field of sampling equipment, and discloses a soil sampling device which comprises a positioning frame, and handrails are symmetrically arranged on the left side and the right side of the positioning frame; a base is fixedly arranged on the upper side of the positioning frame; a driving motor is installed in the machine base. The output end of the driving motor is connected with a drill rod extending into the positioning frame through a coupler. A drill bit is detachably mounted at the lower end of the drill rod; a sampling pipe is coaxially fitted and sleeved in the drill rod; the sampling pipe is formed by combining a first half pipe and a second half pipe in the axial direction. According to the soil sampling device provided by the invention, the drill rod is driven by the driving motor to realize drilling, the sampling pipe adopts a split structure to facilitate sample taking, the drill bit and the drill rod are in threaded connection to realize quick replacement, and the soil sampling device has the advantages of compact structure, convenience in disassembly, assembly and maintenance and improvement of sampling efficiency.

Description

Technical Field

[0001] This utility model relates to the field of sampling equipment technology, specifically to a soil sampling device. Background Technology

[0002] In the field of soil sampling, traditional sampling devices generally suffer from numerous shortcomings, severely restricting the efficiency and convenience of sampling work. Existing devices are mostly integrated structures, bulky and heavy, making them extremely inconvenient to carry. Transportation and handling are particularly difficult when traveling to remote areas or sampling sites with complex terrain, and components are easily damaged by collisions or bumps during transport, increasing maintenance costs. Furthermore, the disassembly process of these devices is cumbersome and complex. Many key components use welding or integrated molding connections, and when damaged parts need to be replaced, cleaned, or routinely maintained, specialized tools and technicians are often required, which is time-consuming and labor-intensive, leading to untimely equipment maintenance and prolonged idleness, seriously affecting the progress of sampling work. Regarding sampling efficiency, some devices still rely on manual rotation of the drill rod for drilling, which is not only labor-intensive but also slow. This excessive time consumption is particularly prominent when collecting multiple samples or conducting large-area sampling. At the same time, the process of retrieving soil samples after sampling is also cumbersome, further reducing overall work efficiency. These shortcomings make existing soil sampling devices unable to meet the demands of efficient and convenient modern sampling. Utility Model Content

[0003] The purpose of this invention is to provide a soil sampling device that has the advantages of compact structure, easy disassembly and maintenance, and improved sampling efficiency.

[0004] To achieve the above objectives, this utility model provides the following solution:

[0005] A soil sampling device includes a positioning frame with handrails symmetrically arranged on its left and right sides; a base is fixedly mounted on the upper side of the positioning frame; a drive motor is installed inside the base; the output end of the drive motor is connected to a drill rod extending into the positioning frame via a coupling; a drill bit is detachably mounted on the lower end of the drill rod; a sampling tube is coaxially fitted inside the drill rod; the sampling tube is composed of a first half-tube and a second half-tube combined along the axial direction.

[0006] In one feasible implementation, screw holes are provided on the left and right sides of the positioning frame, and the screw holes have internal threads; the handrail is fixedly provided with a screw rod, the screw rod has external threads, and the screw rod threads are set in the screw holes.

[0007] In one feasible implementation, the surface of the handrail is provided with anti-slip texture to facilitate the operator's grip on the moving device.

[0008] In one feasible implementation, multiple heat dissipation holes are evenly distributed on the four side walls of the base.

[0009] In one feasible implementation, the heat dissipation holes on the side walls of the base create a continuous airflow channel in the circumferential direction, effectively dissipating the heat generated by the drive motor during operation.

[0010] In one feasible implementation, the drive motor is connected to a power supply, which is installed inside the frame.

[0011] In one feasible implementation, one end of the first half-tube is provided with multiple oblique slots spaced from top to bottom; one end of the second half-tube is provided with multiple oblique protrusions spaced from top to bottom, each corresponding to one of the oblique slots.

[0012] In one feasible implementation, a mechanical interlock is formed by embedding the oblique card protrusion into the oblique card slot to prevent the half tube from separating due to vibration during the sampling process.

[0013] In one feasible implementation, a threaded ring is fixedly connected to the lower end of the drill rod, and an annular threaded groove is fixedly connected to the upper end of the drill bit, with the threaded ring and the annular threaded groove being threadedly connected.

[0014] In one feasible implementation, the outer diameter of the drill bit decreases from the upper end to the lower end, and a cutting edge is provided at the lower edge of the drill bit.

[0015] In one feasible implementation, the conical structure of the drill bit causes the contact area between the drill bit sidewall and the soil to gradually decrease as the drilling depth increases, thereby reducing the frictional resistance of soil particles on the drill bit sidewall.

[0016] In one feasible implementation, the threaded connection between the drill bit and the drill rod allows operators to easily change drill bits with different cutting edge shapes according to different soil conditions.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This application provides a soil sampling device that uses a drive motor to drive a drill rod to achieve drilling. The sampling tube adopts a split structure for easy sample removal. The drill bit and drill rod are connected by a thread to achieve quick replacement. It has the advantages of compact structure, easy disassembly and maintenance, and improved sampling efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the soil sampling device of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of this practical machine base;

[0021] Figure 3 This is a schematic diagram of the sampling tube of this utility model;

[0022] Figure 4 This is a structural schematic diagram of the positioning frame and handrail of this utility model;

[0023] The components include: positioning frame-1, handrail-2, base-3, drive motor-4, drill rod-5, drill bit-6, sampling tube-7, power supply-8, screw hole-11, screw-21, heat dissipation through hole-31, cutting edge-61, first half tube-71, second half tube-72, oblique slot-711, and oblique protrusion-721. Detailed Implementation

[0024] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. Example

[0025] See Figure 1 In one embodiment of this application, a soil sampling device includes a positioning frame 1, with handrails 2 symmetrically arranged on the left and right sides of the positioning frame 1; a base 3 is fixedly installed on the upper side of the positioning frame 1; a drive motor 4 is installed inside the base 3; the output end of the drive motor 4 is connected to a drill rod 5 extending into the interior of the positioning frame 1 via a coupling; a drill bit 6 is detachably installed at the lower end of the drill rod 5; a sampling tube 7 is coaxially fitted inside the drill rod 5; the sampling tube 7 is composed of a first half-tube 71 and a second half-tube 72 combined along the axial direction.

[0026] The positioning frame 1 is a frame that supports the main structure of the device. It can be implemented using a metal rectangular frame, providing fixed reference points for the handrails 2 and the base 3, ensuring the overall stability of the device. The handrails 2 are symmetrically arranged gripping components on both sides of the positioning frame 1, and can be implemented using metal tubing with anti-slip textures, facilitating the operator's grip on the moving device. The positioning frame 1, as the basic frame, provides fulcrums through the symmetrically arranged handrails 2, enabling the device to maintain balance in complex terrain.

[0027] The positioning frame 1 has screw holes 11 on both sides, with internal threads inside the screw holes 11. The handrail 2 is fixedly equipped with a screw rod 21, which has external threads and is threaded into the screw holes 11. The screw rod 21 of the handrail 2 is screwed into the screw holes 11 from the outside of the positioning frame 1. By rotating the handrail 2 clockwise, the external threads and internal threads are fully engaged. For disassembly, rotating the handrail 2 in the opposite direction disengages the threads, allowing for quick separation of the handrail 2 from the positioning frame 1. When the handrail 2 is deformed due to external force, the damaged part can be replaced individually without scrapping the entire positioning frame 1. The threaded connection replaces the fixed connection, allowing the handrail 2 to be easily disassembled and reassembled. This avoids the problem of excessive overall size during transportation caused by traditional welding or integral casting methods for fixing the handrail 2. Furthermore, it can be detached and stored when not in use.

[0028] Multiple heat dissipation holes 31 are evenly distributed on the four side walls of the base 3, forming a continuous airflow channel in the circumferential direction. This effectively dissipates the heat generated by the drive motor 4 during operation, ensuring that the motor maintains a stable operating temperature during continuous operation and extending its service life. The power supply 8 is installed inside the base 3 and can be a lithium battery pack. The drive motor 4 and the power supply 8 establish direct electrical contact, and the wires can be fixed using built-in terminals to avoid external cable exposure.

[0029] The first half-tube 71 has multiple inclined slots 711 spaced from top to bottom at one end; the second half-tube 72 has multiple inclined protrusions 721 spaced from top to bottom, each corresponding to one of the inclined slots 711. The inclined protrusions 721 are inserted into the inclined slots 711 to form a mechanical interlock, preventing the half-tubes from separating due to vibration during sampling. The inclined slot 711 is a groove structure extending obliquely along the axial direction, which can be achieved through machining or injection molding. Its inclination angle matches the insertion direction of the protrusions, guiding and limiting the protrusions during axial assembly. Specifically, after the first half-tube 71 and the second half-tube 72 are aligned axially, the inclined protrusions 721 are pushed into the corresponding inclined slots 711, achieving rapid engagement through the guiding effect of the inclined surfaces. The spacing of the slots and protrusions ensures that the connecting force is evenly transmitted throughout the entire axial length, preventing deformation or breakage caused by localized stress concentration. When disassembly is required, applying force in the opposite direction along the axial direction will cause the protrusion to detach from the slot, directly separating the two halves to expose the inner cavity of the sampling tube 7, simplifying the sample removal and cleaning process.

[0030] A threaded ring is fixedly connected to the lower end of drill rod 5, and an annular threaded groove is fixedly connected to the upper end of drill bit 6. The threaded ring and the annular threaded groove are threadedly connected. When drill bit 6 needs to be installed, the internal thread of the annular threaded groove and the external thread of the threaded ring are gradually engaged by rotating drill bit 6 until they are completely locked. When disassembly is required, the thread engagement is released by rotating drill bit 6 in the opposite direction, thereby achieving rapid separation of drill bit 6 from drill rod 5. The outer diameter of drill bit 6 decreases from the upper end to the lower end, i.e., a tapered structure is adopted for drill bit 6. The taper range can be 5-15 degrees. The tapered structure of drill bit 6 causes the contact area between the side wall of drill bit 6 and the soil to gradually decrease with the increase of drilling depth, avoiding continuous friction of the side wall caused by a uniform outer diameter, reducing the frictional resistance of soil particles on the side wall of drill bit 6, and thus reducing the torque requirement of drive motor 4. A cutting edge 61 is provided on the lower edge of drill bit 6, making the cutting edge 61 an integrated structure with drill bit 6. The threaded connection between the drill bit 6 and the drill rod 5 makes it easy for operators to change the drill bit 6 with different cutting edge 61 shapes according to different soil conditions. The sharp edge of the cutting edge 61 enhances the cutting effect on the soil and improves the efficiency of penetrating hard soil layers.

[0031] This invention eliminates continuous sidewall friction caused by consistent outer diameters. After the drive motor 4 starts, it drives the drill rod 5 via a coupling to rotate the drill bit 6 and cut into the soil layer. During drilling, the soil sample is squeezed into the sampling tube 7. After sampling, the drill bit 6 is rotated in the opposite direction to quickly separate from the drill rod 5. By axially separating the first half-tube 71 and the second half-tube 72, the complete soil column inside the tube is directly exposed, achieving rapid sampling and separation of the soil sample.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A soil sampling device, characterized in that, The device includes a positioning frame with symmetrical handrails on its left and right sides; a base is fixedly mounted on the upper side of the positioning frame; a drive motor is installed inside the base; the output end of the drive motor is connected to a drill rod extending into the positioning frame via a coupling; a drill bit is detachably mounted on the lower end of the drill rod; a sampling tube is coaxially fitted inside the drill rod; the sampling tube is composed of a first half-tube and a second half-tube combined along the axial direction.

2. The soil sampling device according to claim 1, characterized in that, The positioning frame has screw holes on its left and right sides, and the screw holes have internal threads; the handrail is fixedly provided with a screw rod, the screw rod has external threads, and the screw rod threads are set in the screw holes.

3. The soil sampling device according to claim 1, characterized in that, The base has multiple heat dissipation holes evenly distributed on its four sides.

4. The soil sampling device according to claim 1, characterized in that, The drive motor is connected to a power supply, which is installed inside the base.

5. The soil sampling device according to claim 1, characterized in that, The first half-tube has multiple oblique slots spaced from top to bottom at one end; the second half-tube has multiple oblique protrusions spaced from top to bottom at one end, each corresponding to one of the oblique slots.

6. The soil sampling device according to claim 1, characterized in that, The lower end of the drill rod is fixedly connected to a threaded ring, and the upper end of the drill bit is fixedly connected to an annular threaded groove. The threaded ring and the annular threaded groove are threadedly connected.

7. The soil sampling device according to claim 1, characterized in that, The outer diameter of the drill bit decreases from the upper end to the lower end, and a cutting edge is provided at the lower edge of the drill bit.

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