Shallow soil sampling device

Abstract

The utility model relates to a shallow soil sampling device which comprises a power module, a fixing module, a main body drill rod and a soil sampling module, and the power module is arranged at the upper end of the main body drill rod and used for providing power for the main body drill rod; the fixing module is arranged on the main body drill rod and is used for fixing the sampling device; the soil sampling module is connected with the lower end of the main body drill rod and is used for sampling shallow soil as a soil sample. According to the utility model, the electromagnetic valve of the power module is combined with the time-delay relay, so that the hammering penetration effect of the air hammer on the main body drill rod is accurately controlled. The vibration frequency and strength of the air hammer are controlled by adjusting the electromagnetic valve, so that the air hammer can efficiently operate in the sampling process under different geological conditions; and meanwhile, the time delay relay is introduced, so that the sampling time interval can be adjusted according to different conditions, and the sampling continuity and stability are ensured.

Description

Technical Field

[0001] This utility model belongs to the field of geotechnical engineering exploration technology, specifically relating to a shallow soil sampling device. Background Technology

[0002] In geotechnical engineering investigation and geotechnical testing, sampling and analysis of shallow soil layers is a crucial means of obtaining engineering geological information. Traditional soil sampling methods, such as manual excavation or the use of heavy machinery, often suffer from low sampling efficiency, complex operation, and difficulty in adapting to different terrains and soil conditions. Portable shallow soil sampling devices can quickly and accurately obtain shallow soil samples without damaging the soil structure, providing strong support for scientific research and engineering practice. The main technical challenges in developing shallow soil sampling devices include: low sampling efficiency: traditional sampling methods are often inefficient and cannot meet the needs of large-scale, rapid sampling; soil structural integrity: soil structure has a significant impact on soil physical and mechanical properties, permeability, etc. The sampling device should minimize damage to the soil structure during sampling to maintain the original state of the soil sample; and terrain adaptability: different terrains and soil conditions place different requirements on the sampling device. Existing sampling devices are not suitable for soils with different hardness, moisture and particle size; poor portability: due to the complex geological conditions, engineering surveys often require manual carrying of sampling devices for field operations, but the existing devices have a relatively complex structure and are difficult to operate and maintain. Utility Model Content

[0003] In order to overcome the problems existing in the prior art, this utility model provides a shallow soil sampling device.

[0004] A shallow soil sampling device includes: a power module, a fixing module, a main drill rod, and a soil sampling module.

[0005] The power module is located at the upper end of the main drill pipe and is used to provide power to the main drill pipe. The power module includes an air hammer, a time delay relay, a solenoid valve and an air compressor. The air compressor is connected to one end of the solenoid valve, and the other end of the solenoid valve is connected to the air hammer. The solenoid valve is also connected to the time delay relay.

[0006] The fixing module is mounted on the main drill rod and is used to fix the entire sampling device.

[0007] The soil sampling module is connected to the lower end of the main drill rod and is used to collect shallow soil as a soil sample.

[0008] In addition to the aspects and any possible implementations described above, a further implementation is provided in which the main drill pipe includes a drill tube and a connecting slider, the drill tube being provided with a groove, the connecting slider being provided with a flange, and the groove and the flange being connected by a snap fastener.

[0009] In addition to the aspects and any possible implementations described above, a further implementation is provided in which the fixing module includes an integrated structure of a fixing tube and a rivet pulley, wherein the fixing tube is an internally hollow steel tube, one end of which is connected to the connecting slider and the other end of which is connected to the integrated structure of the rivet pulley.

[0010] In addition to the aspects and any possible implementations described above, a further implementation is provided in which the number of fixed pipes is at least three, and they are evenly arranged around the drill pipe.

[0011] In addition to the aspects and any possible implementations described above, a further implementation is provided in which the rivet pulley integrated structure includes a telescopic rod, a rivet, and a pulley. The telescopic rod is disposed inside the fixed tube and moves telescopically along the length of the fixed tube. The rivet is welded to its lower part, and a bolting channel is provided between the rivet and the rivet. The pulley is connected to the bottom end of the fixed tube.

[0012] In addition to the aspects and any possible implementations described above, a further implementation is provided in which a plurality of pairs of openings are symmetrically provided in the height direction of the wall of the fixed tube.

[0013] In addition to the aspects and any possible implementations described above, a further implementation is provided in which the soil sampling module is a detachable serrated blade connected to the lower end of the drill pipe, and the upper end of the drill pipe connected to the base of the air hammer.

[0014] In addition to the aspects described above and any possible implementations, a further implementation is provided in which a plurality of leveling bubbles are provided on the base surface of the air hammer.

[0015] In addition to the aspects described above and any possible implementations, a further implementation is provided in which the surface of the drill pipe is provided with scale lines.

[0016] In addition to the aspects and any possible implementations described above, a further implementation is provided in which one end of the solenoid valve is connected to an air hammer via a first air supply pipe equipped with a switch, and the other end of the solenoid valve is connected to an air compressor via a second air supply pipe.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) Before sampling, the rivet pulley integrated structure can fix the main sampling structure by extending the telescopic rod and pressing the rivets into the ground, which effectively avoids the device tilting caused by external force during drilling and sampling. After sampling, the rivets are retracted and the buckles are fixed. Combined with the pulley mobile transportation device, the device can be easily moved in the field environment, which greatly saves labor costs and improves work efficiency.

[0019] (2) The solenoid valve of the power module is combined with a time-delay relay to precisely control the impact penetration effect of the air hammer on the main drill pipe. By adjusting the solenoid valve, the vibration frequency and intensity of the air hammer are controlled to ensure efficient operation during sampling under different geological conditions. At the same time, the introduction of a time-delay relay allows for adjustment of the sampling time interval for different situations, ensuring the continuity and stability of sampling. This method allows operators to flexibly adjust the number of blows and the impact force of the air hammer according to different geological conditions and sampling requirements, thereby achieving precise control of the penetration depth and meeting the diverse needs of actual work.

[0020] (3) An air level is installed on the top of the air hammer so that the sampling device can be calibrated on uneven construction sites, improving sampling accuracy. In addition, the drilling pipe is marked with scale lines so that the drilling depth can be observed in real time.

[0021] (4) The drill pipe and the connecting slider are connected by a snap-fit. This design not only ensures the connection strength between the drill pipe and the connecting slider, but also greatly simplifies the installation and disassembly process and improves work efficiency. Attached Figure Description

[0022] Figure 1 This is a front view of the device of this utility model;

[0023] Figure 2 This is a top view of the structure of the device of this utility model;

[0024] Figure 3 For the present utility model Figure 2 A magnified schematic diagram of structure A in the image. Detailed Implementation

[0025] To better understand the technical solution of this utility model, the content of this utility model includes, but is not limited to, the specific embodiments described below. Similar technologies and methods should be considered within the scope of protection of this utility model. To make the technical problem to be solved, the technical solution, and the advantages of this utility model clearer, a detailed description will be provided below in conjunction with the accompanying drawings and specific embodiments.

[0026] It should be understood that the embodiments described in this utility model are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] The terminology used in the embodiments of this utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The singular forms “a,” “the,” and “the” used in the embodiments of this utility model and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0028] This utility model provides a shallow soil sampling device, including: a power module, a fixing module, a main drill rod, and a soil sampling module.

[0029] The power module is located at the upper end of the main drill pipe and is used to provide power to the main drill pipe. The power module includes an air hammer, a time delay relay, a solenoid valve and an air compressor. The air compressor is connected to one end of the solenoid valve, and the other end of the solenoid valve is connected to the air hammer. The solenoid valve is also connected to the time delay relay.

[0030] The fixing module is mounted on the main drill rod and is used to fix the entire sampling device.

[0031] The soil sampling module is connected to the lower end of the main drill rod and is used to collect shallow soil as a soil sample.

[0032] Preferably, the main drill pipe includes a drill tube and a connecting slider. The drill tube is provided with a groove, and the connecting slider is provided with a flange. The groove and the flange are connected by a snap fastener.

[0033] Preferably, the fixing module includes an integrated structure of a fixing tube and a rivet pulley. The fixing tube is an internally hollow steel tube, with one end connected to the connecting slider and the other end connected to the integrated structure of the rivet pulley.

[0034] Preferably, the number of fixed pipes is at least three, and they are evenly arranged around the drill pipe.

[0035] Preferably, the rivet and pulley integrated structure includes a telescopic rod, a rivet, and a pulley. The telescopic rod is disposed inside the fixed tube and moves telescopically along the length of the fixed tube. The rivet is welded to its lower part, and a bolting channel is provided between the rivet and the telescopic rod. The pulley is connected to the bottom end of the fixed tube.

[0036] Preferably, a plurality of pairs of openings are symmetrically provided in the height direction of the wall of the fixed tube.

[0037] Preferably, the soil sampling module is a detachable serrated blade, the blade is connected to the lower end of the drilling pipe, and the upper end of the drilling pipe is connected to the base of the air hammer.

[0038] Preferably, the base surface of the air hammer is provided with a plurality of leveling bubbles.

[0039] Preferably, the surface of the drill pipe is provided with graduation lines.

[0040] Preferably, one end of the solenoid valve is connected to the air hammer through a first air supply pipe equipped with a switch, and the other end of the solenoid valve is connected to the air compressor through a second air supply pipe.

[0041] Specifically, such as Figure 1 and Figure 2As shown, this utility model provides a portable shallow soil sampling device, including a power module, a fixing module, a main drill rod, and a soil sampling module. The power module consists of an air hammer 1, a solenoid valve 4, a time delay relay 5, and an air compressor 6. One end of the solenoid valve 4 is connected to the air hammer 1 via a first air supply pipe equipped with a switch, and the other end of the solenoid valve 4 is connected to the air compressor 6 via a second air supply pipe. A switch can also be installed on the second air supply pipe to adjust the air flow rate as needed. The time delay relay 5 is connected to both sides of the solenoid valve 4 via wires to control the working time, hammering force, and vibration frequency of the air hammer 1. Specifically, the air compressor 6 provides airflow to the solenoid valve 4 through the first air supply pipe, and the solenoid valve 4 provides the received airflow to the air hammer 1 through the second air supply pipe. The air hammer 1 generates a hammering impact force based on the input air pressure and flow rate, and vibrates at a certain frequency. Solenoid valve 4 indirectly affects the hammering force of air hammer 1 by controlling the opening and closing time of the airflow channel set on the first air supply pipe. By switching on and off, it adjusts the airflow interval, thereby changing the vibration frequency of air hammer 1. Time delay relay 5 controls the working time of air hammer 1 by setting its overall operating time. By adjusting the on and off time interval of time delay relay 5, it indirectly affects the switching frequency of solenoid valve 4, thereby affecting the airflow supply. Air compressor 6 compresses air and delivers it to solenoid valve 4 and air hammer 1 through the first air supply pipe, ensuring the stability and continuity of the drilling process. A level bubble 2 is set on the surface of the base of air hammer 1 to adjust the levelness of the sampling device and ensure the verticality of the drilling. The main drill rod includes a connecting slider 7 and a drill pipe 9. The drill pipe 9 has graduated lines on its surface to determine the drilling depth. The upper end of the drill pipe 9 is connected to the base of the air hammer 1 via anchor bolts 3, i.e., the drill pipe 9 and the base of the air hammer 1 are connected by threads. The air hammer 1 and its base are connected by anchor bolts 3. The middle part of the drill pipe 9 has a groove of a certain length for engaging with the flange of the connecting slider 7 to form a snap-fit ​​connection. The connecting slider 7 can move along its length in the groove of the drill pipe 9 according to the required fixed height for sampling to determine the fixed position. The lower end of the drill pipe 9 is connected to the soil sampling module 10. The lower part of the soil sampling module 10 is designed with serrated blades for easy cutting into the soil, and the blades are designed to be detachable for easy replacement or maintenance by personnel as needed. The fixing device includes at least three fixing tubes 8 and a rivet pulley integrated structure, which are connected by a buckle. In this utility model, three tubes are preferred and are evenly arranged around the drilling tube 9. The fixing tube 8 is a hollow steel tube. Its upper part is bolted to the connecting slider 7, and its lower two sides have openings 16 to facilitate the subsequent insertion of connecting bolts at these openings.

[0042] like Figure 3As shown, the rivet-pulley integrated structure includes a telescopic rod 11, a rivet 12, a bolting channel 13, a fixing buckle 14, and a pulley 15. The telescopic rod 11 is placed inside the fixed tube 8. The lower part of the telescopic rod 11 is welded to the rivet 12, and its upper part is a free end, not connected to the slider 7. This arrangement facilitates insertion into the ground, enhances stability, provides anti-slip properties, adapts to complex terrain, and improves convenience. The bolting channel 13 is located at the top of the telescopic rod 11 but at the bottom of the fixed tube 8. As needed, several pairs of holes 16 are symmetrically opened along the height of the tube wall of the fixed tube 8 to adjust the height of the telescopic rod 11 at different positions. The diameter of the holes 16 is the same as the diameter of the bolting channel 13. During sampling, the bolting channel 13 is aligned with one pair of holes 16 in the fixed tube 8 to form a connecting channel. At this time, a bolt is inserted into the connecting channel to fix the telescopic rod 11, thereby determining the length of the telescopic rod 11. This length is determined according to the specific sampling site conditions. The pulley 15 is connected to the lower part of the fixed tube 8 through the fixed buckle 14. When fastened, the supporting rivet 12 on the upper part of the fixed buckle 14 makes the installation of the pulley convenient for moving the support and reduces the labor intensity of manual handling.

[0043] The sampling process of the shallow soil sampling device of this utility model includes the following steps: S1. Install the soil sampling module at the lower end of the drilling pipe of the main drill rod; S2. Place the sampling device at the sampling location and adjust the height, drilling depth, flatness and verticality of the sampling device during sampling.

[0044] S3. After adjustment, insert the rivets of the fixing module into the ground and insert the bolts into the bolting channel between the telescopic rod and the rivets of the fixing module to fix the length of the telescopic rod. After adjustment, start the air compressor of the power module. Adjust the solenoid valve and time delay relay of the power module according to the geological conditions of the sampling to control the vibration frequency and force of the air hammer. Start drilling and sampling. When the required depth is reached, turn off the air compressor and stop the air hammer from working.

[0045] S4. Gently pull out the drill pipe and extract the soil sample along with the soil sampling module;

[0046] S5. If sampling continues, repeat the above steps.

[0047] Specifically, the sampling process of the sampling device of this utility model is as follows:

[0048] First, install the soil sampling module 10 at the lower end of the drill pipe 9, and select a suitable serrated blade according to the sampling requirements. Place the device at the sampling site, and determine the height of the sampling device and the drilling depth by adjusting the length of the telescopic rod 11 and the position of the connecting slider 7. At the same time, monitor the level bubble 2 to ensure the flatness of the device and the verticality during sampling. After determining the dimensions, insert the rivet 12 into the ground and insert the bolt into the bolting channel 13 to fix the length of the telescopic rod 11. After adjustment, start the air compressor 6, and adjust the solenoid valve 4 and the time delay relay 5 according to the geological conditions of the sampling to control the vibration frequency and force of the air hammer 1. Start drilling and sampling. When the scale line on the drill pipe 9 reaches the required depth, turn off the air compressor 6 and stop the operation of the air hammer 1. Gently pull out the drill pipe 9, and take out the soil sample together with the soil sampling module 10. If sampling continues, simply repeat the above steps. After sampling is completed, fasten the fixing buckle 14 to retract the rivet 12 into the fixing tube 8. The pulley 15 is located at the lower part of the fixing tube 8. After being stored properly, it is convenient for staff to transport the sampling device.

[0049] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or related technical or knowledge. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be protected within the scope of the appended claims.

Claims

1. A shallow soil sampling device, characterized in that, include: The system consists of a power module, a mounting module, the main drill pipe, and a soil sampling module. The power module is located at the upper end of the main drill pipe and is used to provide power to the main drill pipe. The power module includes an air hammer, a time delay relay, a solenoid valve and an air compressor. The air compressor is connected to one end of the solenoid valve, and the other end of the solenoid valve is connected to the air hammer. The solenoid valve is also connected to the time delay relay. The fixing module is mounted on the main drill rod and is used to fix the entire sampling device. The soil sampling module is connected to the lower end of the main drill rod and is used to collect shallow soil as a soil sample.

2. The shallow soil sampling device according to claim 1, characterized in that, The main drill pipe includes a drill tube and a connecting slider. The drill tube has a groove, and the connecting slider has a flange. The groove and the flange are connected by a snap fastener.

3. The shallow soil sampling device according to claim 2, characterized in that, The fixing module includes a fixing tube and a rivet pulley integrated structure. The fixing tube is an internally hollow steel tube, with one end connected to the connecting slider and the other end connected to the rivet pulley integrated structure.

4. The shallow soil sampling device according to claim 3, characterized in that, The number of fixed pipes is at least three, and they are evenly arranged around the drill pipe.

5. The shallow soil sampling device according to claim 3, characterized in that, The rivet and pulley integrated structure includes a telescopic rod, a rivet, and a pulley. The telescopic rod is located inside the fixed tube and moves telescopically along the length of the fixed tube. The rivet is welded to its lower part, and a bolting channel is provided between the rivet and the telescopic rod. The pulley is connected to the bottom end of the fixed tube.

6. The shallow soil sampling device according to claim 5, characterized in that, Several pairs of openings are symmetrically formed along the height direction of the wall of the fixed tube.

7. The shallow soil sampling device according to claim 2, characterized in that, The soil sampling module is a detachable serrated blade, which is connected to the lower end of the drilling pipe, and the upper end of the drilling pipe is connected to the base of the air hammer.

8. The shallow soil sampling device according to claim 7, characterized in that, The base surface of the air hammer is provided with several leveling bubbles.

9. The shallow soil sampling device according to claim 2, characterized in that, The surface of the drill pipe is marked with graduation lines.

10. The shallow soil sampling device according to claim 7, characterized in that, One end of the solenoid valve is connected to the air hammer through a first air supply pipe equipped with a switch, and the other end of the solenoid valve is connected to the air compressor through a second air supply pipe.

Images