High-frequency reciprocating type double-layer three-fork star soil sampler

Abstract

The invention discloses a high-frequency reciprocating type double-layer three-fork-star soil sampler which comprises a supporting unit, and the supporting unit plays a supporting role; the sampling barrel is used for sampling soil at a target depth; the first moving device is arranged on the supporting unit and is used for driving the sampling barrel to do reciprocating rotary motion along the vertical axis and cutting soil; the double-layer three-fork closed structure is arranged at the bottom opening of the sampling barrel; and the second movement device is arranged at the top of the sampling barrel and is used for driving the double-layer three-fork closed structure to rotate so as to close or open the opening of the sampling barrel.

Description

Technical Field

[0001] The present invention relates to the technical field of soil sampling equipment, and particularly relates to a high-frequency reciprocating double-layer three-star soil sampler. Background Art

[0002] Traditional soil sampling methods mainly rely on manual operation, which has problems such as uneven sampling depth, insufficient sample representativeness, and high labor intensity. These defects not only reduce the accuracy and reliability of soil data, but also increase the labor cost of operators. In addition, existing soil sampling equipment is mostly simple manual tools, lacking flexibility for different soil types and unable to meet diverse needs.

[0003] Current automated soil samplers on the market still have the problem of samples falling from the bottom during the sampling process. Especially when dealing with sandy soil with poor adhesiveness and sandy loam with more sand grains, it is easy to cause sample loss. In addition, these devices are complex in design, difficult to sample downward when encountering hard or caked soil, unable to be applicable to rapid sampling of hard soil, inconvenient to operate and with high maintenance costs, which limits their popularization in practical applications.

[0004] Therefore, designing a soil sampler that can meet the accurate sampling requirements under different soil conditions has important practical significance and broad application prospects. Summary of the Invention

[0005] The purpose of the present invention is to provide a high-frequency reciprocating double-layer three-star soil sampler in order to solve at least one technical problem in the background art.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A high-frequency reciprocating double-layer three-star soil sampler includes

[0008] a support unit, which plays a supporting role;

[0009] a sampling cylinder, which is used to sample soil at a target depth;

[0010] a first motion device, which is arranged on the support unit and is used to drive the sampling cylinder to perform reciprocating rotational motion along the vertical axis;

[0011] a double-layer three-star closed structure, which is arranged at the bottom opening of the sampling cylinder;

[0012] a second motion device, which is arranged at the top of the sampling cylinder and is used to drive the double-layer three-star closed structure to rotate to close or open the opening of the sampling cylinder.

[0013] In some embodiments, the support unit includes: a frame, which includes support legs, a housing, a handle, and a support. A support is installed above the support legs, a housing is installed above the support, a handle is provided on the periphery of the housing, and a dial is installed above the housing through a dial support plate.

[0014] In some embodiments, the first motion device includes: a hydraulic cylinder, a stepper motor, a hydraulic rod, a bearing, a thrust bearing, a motor bracket, a support, and a coupling. The hydraulic rod is installed above the sampling cylinder, and the hydraulic rod extends and retracts in the hydraulic cylinder. The hydraulic cylinder is supported by a bearing and a thrust bearing and is fixed to the motor bracket and the support; the motor bracket is installed on the support, the stepper motor is installed on the motor bracket, and a coupling is provided above the hydraulic cylinder. The coupling connects the stepper motor and the hydraulic cylinder to achieve drive control of the hydraulic cylinder.

[0015] In some embodiments, the second motion device includes a motor and a connecting rod. The motor is arranged at the top of the sampling cylinder, and the motor is connected to the double-layer three-pronged closed structure through the connecting rod.

[0016] In some embodiments, the double-layer three-pronged closed structure includes an upper and a lower three-pronged star structure. The lower three-pronged star structure is fixedly connected to the sampling cylinder, and the lower three-pronged star structure is provided with a hollow soil sampling opening. The upper three-pronged star structure is coaxially rotatably arranged with the lower three-pronged star structure, and the upper three-pronged star structure can drive the hollow soil sampling opening of the lower three-pronged star structure to be closed under the drive of the connecting rod.

[0017] In some embodiments, the hydraulic rod is marked with scales for indicating the position of the movement of the sampling cylinder.

[0018] In some embodiments, a small ball is connected to the dial through a line for indicating the position of the angle scale.

[0019] The beneficial effects of the present invention compared with the prior art are as follows:

[0020] 1. Connect the soil sampling cylinder to the stepper motor with high-frequency reciprocating rotation. By controlling the rotation frequency and amplitude of the sampling cylinder, a high-frequency and small-amplitude reciprocating rotational motion is achieved, aiming to effectively cut and loosen the soil for different soil types. The sampling cylinder reaches the target depth under the slow downward pressure of the hydraulic cylinder to complete rapid sampling.

[0021] 2. The sampling structure realizes lifting through the cooperation of the hydraulic cylinder and the sampling cylinder. After sampling, the hydraulic cylinder can be lifted to take out and collect the sample in the sampling cylinder as it is, which is convenient for subsequent sample observation and analysis.

[0022] 3. The bottom of the sampling cylinder is equipped with a double-layer tristar structure, which is in an open state before sampling. When we drill the sampling cylinder into the ground and reach the target depth, the upper-layer tristar is rotated through the motor at the upper end of the sampling cylinder until the upper and lower layers coincide again, forming a closed state to achieve the integrity of sampling.

[0023] 4. A dial is installed at the top of the outer shell through a support assembly, and the scale can be read through the small ball connected by a wire, solving the problem of inaccurate control of the angle of the sampler during the sampling process. There is a scale marked on the hydraulic rod at the upper end of the sampling cylinder, which can read the depth of the sampling cylinder's descent, solving the problem of inaccurate control of the depth during the sampling process.

[0024] 5. The sampling cylinder adopts a detachable connection method. In special cases, sampling cylinders of different specifications can be replaced according to different sampling depths to achieve one-time rapid sampling. Description of the Drawings

[0025] Figure 1 is the overall appearance schematic diagram of the present invention;

[0026] Figure 2 is the bottom-up assembly drawing of the present invention removing the frame;

[0027] Figure 3 is the connection schematic diagram of the sampling cylinder and the motor;

[0028] Figure 4 is the structural schematic diagram of the present invention;

[0029] Markings in the figure: 1 - double-layer tristar closed structure, 2 - bearing, 3 - control panel, 4 - stepper motor, 5 - coupling, 6 - motor bracket, 7 - hydraulic cylinder, 8 - thrust bearing, 9 - sampling cylinder, 10 - support, 11 - outer shell, 12 - handle, 13 - wire, 14 - dial, 15 - ball, 16 - dial support plate 17 - support leg, 18 - hydraulic rod, 19 - motor, 20 - scale, 21 - connecting rod, 22 - thread. 1-1 - upper-layer tristar, 1-2 - silica gel, 1-3 - lower-layer tristar. Detailed Embodiments

[0030] The present invention will be further described below in conjunction with embodiments. The described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the protection scope of the present invention.

[0031] Embodiment 1:

[0032] As Figures 1-4As shown, a high-frequency reciprocating double-layer three-pronged star soil sampler includes a support unit, a sampling cylinder, a first motion device, a double-layer three-pronged closed structure, and a second motion device. The support unit plays a supporting role; the sampling cylinder is used to sample the soil at the target depth; the first motion device is arranged on the support unit and is used to drive the sampling cylinder to perform reciprocating motion in the vertical direction; the double-layer three-pronged closed structure is arranged at the bottom opening of the sampling cylinder; the second motion device is arranged at the top of the sampling cylinder and is used to drive the double-layer three-pronged closed structure to rotate to close or open the opening of the sampling cylinder.

[0033] In some embodiments, the support unit includes: a frame, which includes support legs, a housing, a handle, and a support. A support is installed above the support legs, a housing is installed above the support, a handle is arranged on the periphery of the housing, and a scale disk is installed above the housing through a scale disk support plate.

[0034] In some embodiments, the first motion device includes: a hydraulic cylinder, a stepping motor, a hydraulic rod, a bearing, a thrust bearing, a motor bracket, a support, and a coupling. The hydraulic rod is installed above the sampling cylinder. The hydraulic rod 18 is connected to the sampling cylinder 9 through a thread 22, and the sampling cylinder is of a detachable design, which is convenient for removal and replacement. The hydraulic rod extends and retracts in the hydraulic cylinder, and a scale is marked on the hydraulic rod to indicate the position of the movement of the sampling cylinder.

[0035] The hydraulic cylinder is supported by bearings and thrust bearings and is fixed on the motor bracket and the support; the motor bracket is installed on the support, the stepping motor is installed on the motor bracket, a coupling is arranged above the hydraulic cylinder, and the coupling connects the stepping motor and the hydraulic cylinder to realize the drive control of the hydraulic cylinder. The entire system is regulated by a control panel 3, and the control panel 3 is used to control the stepping motor to ensure accurate soil sampling. A motor 19 is arranged at the top of the sampling cylinder 9, and the motor 19 is connected to the double-layer three-pronged star structure 1 through a connecting rod 21.

[0036] In some embodiments, the second motion device includes a motor and a connecting rod. The motor is arranged at the top of the sampling cylinder, and the motor is connected to the double-layer three-pronged closed structure through the connecting rod.

[0037] In some embodiments, the double-layer three-pronged closed structure includes upper and lower layers of three-pronged star structures. Each three-pronged star structure is composed of three branch rods, and the adjacent branch rods are arranged at an angle of 120°. The three branch rods of the upper three-pronged star 1-1 are connected to the three branch rods of the lower three-pronged star 1-3 through silica gel 1-2. Among them, the lower three-pronged star is connected to the sampling cylinder through a fixed connection, and the upper three-pronged star has a rotatable function.

[0038] Before the soil sampling operation, the two tristar structures completely coincide vertically. During the soil sampling process, the upper tristar rotates 120° relative to the lower tristar, causing the two tristar structures to coincide vertically again. This rotational movement drives the stretching of the silicone connection between the upper and lower layers, thereby forming a barrier to provide a sealing effect and ensure isolation and stability during the soil sampling process.

[0039] Preferably, a flexible connection is formed between the upper and lower tristar structures through a corrugated pipe made of silicone or polyurethane, so as to achieve flexible movement of the upper layer and stable support of the lower layer during the sampling process.

[0040] In some embodiments, a small ball is connected to the dial through a line to indicate the position of the angular scale. The scale is read through the connected small ball to solve the problem of inaccurate control of the sampler angle during the sampling process. There are scales marked on the hydraulic rod at the upper end of the sampling cylinder, which can read the depth of the sampling cylinder's descent and solve the problem of inaccurate control of the depth during the sampling process.

[0041] The entire system controls the rotation frequency of the stepper motor 4 through the control panel 3, flexibly adjusts the corresponding frequency and amplitude for different soil types, can effectively cut and loosen when encountering hard or caked soil, thereby easily obtaining soil samples and greatly improving the efficiency of the sampling process.

[0042] When the sampling cylinder reaches the target depth, the motor at the top of the sampling cylinder rotates to seal the bottom of the sampling cylinder, effectively preventing the soil from slipping from the bottom and ensuring the integrity and representativeness of the sampling.

[0043] In the embodiment, the hydraulic rod and the sampling cylinder are detachably connected. After the sampling is completed, the tristar closing structure is opened through the control panel, and the hydraulic rod is separated from the sampling cylinder. At this time, the soil can be taken out from the bottom of the sampling cylinder, and the soil is analyzed subsequently.

[0044] Operation process:

[0045] 1. Preparation work: Place the sampling cylinder on the soil surface. Through the dial at the top of the sampling cylinder, the drilling angle can be determined to ensure that it meets the target soil sampling.

[0046] 3. Start the first motion device: Turn on the high-frequency reciprocating rotation motion device to start cutting and loosening the soil.

[0047] 4. Press down the sampling cylinder: While the motion device is working, start the hydraulic cylinder to slowly press down the sampling cylinder and read the scale until it reaches the target depth.

[0048] 5. Tristar closing: After reaching the required depth, rotate the upper tristar structure 120 degrees clockwise through the motor to form a barrier to prevent soil leakage.

[0049] 6. After the sampling is completed, rotate the upper three-star degree counterclockwise to remove the barrier. At this time, the bottom of the sampling cylinder is an open structure, and the soil in the sampling cylinder can be taken out in its original state, which is convenient for subsequent observation and analysis.

[0050] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-frequency reciprocating double-layer three-pronged star soil sampler, characterized in that: include: A support unit, wherein the support unit plays a supporting role; A sampling cylinder, wherein the sampling cylinder is used to sample soil at a target depth; A first motion device, which is disposed on the support unit and is used to drive the sampling tube to perform reciprocating rotational motion along a vertical axis to cut the soil; A double-layer three-pronged closed structure, wherein the double-layer three-pronged closed structure is arranged at the bottom opening of the sampling tube; The second motion device is arranged at the top of the sampling cylinder and is used to drive the double-layer three-pronged closed structure to rotate, so as to close or open the opening of the sampling cylinder.

2. A high-frequency reciprocating double-layer three-pronged star soil sampler according to claim 1, characterized in that: The support unit comprises: a frame, the frame comprising a support leg (17), a shell (11), a handle (12) and a support (10), the support (10) being installed above the support leg (17), the shell (11) being installed above the support (10), the handle (12) being arranged on the periphery of the shell (11), and a dial (14) being installed above the shell (11) via a dial support plate (16).

3. A high-frequency reciprocating double-layer three-pronged star soil sampler according to claim 2, characterized in that: The first motion device comprises: a hydraulic cylinder (7), a stepper motor (4), a hydraulic rod (18), a bearing (2), a thrust bearing (8), a motor bracket (6), a support (10), and a coupling (5); the hydraulic rod (18) is installed above the sampling tube (9); the hydraulic rod (18) is retracted in the hydraulic cylinder (7); the hydraulic cylinder (7) is fixedly supported by the bearing (2) and the thrust bearing (8), and is fixed to the motor bracket (6) and the support (10); the motor bracket is installed on the support (10), the stepper motor is installed on the motor bracket, and a coupling (5) is provided above the hydraulic cylinder; the coupling connects the stepper motor (4) and the hydraulic cylinder (7) to realize the driving control of the hydraulic cylinder.

4. The high-frequency reciprocating double-layer three-pronged star soil sampler according to claim 1, characterized in that: The second motion device comprises a motor (19) and a connecting rod (21); the motor (19) is arranged on the top of the sampling tube (9); and the motor (19) is connected to the double-layer three-pronged closed structure via the connecting rod (21).

5. A high-frequency reciprocating double-layer three-pronged star soil sampler according to claim 4, characterized in that: The double-layer three-pronged closed structure comprises an upper and lower three-pronged star structure; each three-pronged star structure is composed of three branch rods, and adjacent branch rods are arranged at an angle of 120°; the three branch rods of the upper three-pronged star are connected to the three branch rods of the lower three-pronged star through silicone, wherein the lower three-pronged star is connected to the sampling tube through a fixed connection, and the upper three-pronged star has a rotatable function. Before the soil excavation operation, the two three-pointed star structures completely overlap in the vertical direction. During the soil excavation process, the upper three-pointed star rotates 120 degrees relative to the lower three-pointed star, so that the two three-pointed star structures overlap again in the vertical direction.

6. The high-frequency reciprocating double-layer three-pronged star soil sampler according to claim 3, characterized in that: The hydraulic rod (18) is marked with a scale (20) for indicating the position of the sample tube movement.

7. The high-frequency reciprocating double-layer three-pronged star soil sampler according to claim 3, characterized in that: The scale plate (14) is connected to a small ball (15) via a line (13) for indicating the position of the angle scale.

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