A control method of an automatic cutting soil sample preparation device

Abstract

The application discloses a control method of an automatic cutting preparation soil sample device, wherein the device comprises a main frame unit for placing an original soil sample, and a cutter disc unit connected with the main frame unit; the control method comprises the following steps: obtaining initial state information of the original soil sample, and determining target state information according to the initial state information; and according to the initial state information and the target state information, the cutter disc unit is controlled to cut the original soil sample on the main frame unit, so that a target soil sample corresponding to the target state information is obtained. Through the connection mode of the main frame unit and the cutter disc unit, when target soil samples with different target shapes and sizes need to be prepared, the original soil sample can be conveniently cut in a three-dimensional space, the preparation steps are simplified, the cutting quality is improved, and the application range of the device is further increased.

Description

Technical Field

[0001] This invention relates to the field of geotechnical testing, and more particularly to a control method for an automatic soil sample preparation device. Background Technology

[0002] Geotechnical testing is a crucial method and component in geotechnical engineering for determining parameters such as shear strength, porosity, and deformation modulus of soil. The first and essential step in conducting geotechnical tests is soil sample preparation. The quality of soil sample preparation directly impacts the accuracy of the geotechnical test. For consolidation tests, direct shear tests, and permeability tests, manual pressing of a ring cutter is used for soil sample preparation. This involves placing the cutting edge of the ring cutter on the soil sample and pressing it vertically downwards, while simultaneously using a cutting tool to cut away excess soil along the outer perimeter of the ring cutter until the soil sample protrudes above the ring cutter, and then smoothing out the excess on both sides of the ring cutter. For triaxial tests and axial compression tests using cylindrical soil samples, the undisturbed soil sample is first cut into a soil column slightly larger than the specified size using a wire saw or cutting tool. The soil column is then placed between the upper and lower discs of a cutting disc, and while rotating the discs, the wire saw or cutting tool is used to cut the soil column closely against the soil column until a cylindrical soil sample of the specified diameter is achieved.

[0003] Therefore, traditional methods of cutting and preparing soil samples require manual cutting using simple tools such as soil cutters, wire saws, and cutting discs to cut the fixed soil sample vertically from top to bottom until it is shaped into a cylinder or other desired shape. Traditional manual soil cutting methods are difficult to implement, time-consuming, labor-intensive, and result in low-quality samples. In practice, soil sample damage is frequently encountered during manual cutting and preparation, and for some hard, undisturbed soil samples, it is difficult, and sometimes impossible, to prepare qualified samples that meet experimental requirements using existing manual methods.

[0004] In the existing design schemes, the existing improved geotechnical cutting and preparation devices are mainly operated manually or semi-automatically. The entire cutting and soil sample preparation process is slow and requires operators to cooperate with the equipment. Furthermore, it cannot achieve arbitrary cutting and preparation of soil samples in three-dimensional space. The existing soil cutting devices have a limited scope of application and are often only applicable to a certain type of geotechnical test, lacking universality. Moreover, the existing devices have a low degree of automation, many operation steps, and poor controllability, which affects the quality of the target soil sample.

[0005] Therefore, existing technologies still need to be improved and developed. Summary of the Invention

[0006] In view of the shortcomings of the prior art, the purpose of this invention is to provide a control method for an automatic soil sample preparation device, which aims to solve the problems of cumbersome existing soil cutting preparation processes and the need to improve the applicability.

[0007] The technical solution of the present invention is as follows:

[0008] This invention provides a control method for an automatic soil sample preparation device, wherein the device includes:

[0009] The main frame unit is used to place the original soil sample;

[0010] The tool disk unit is connected to the main frame unit;

[0011] The control method includes:

[0012] Obtain the initial state information of the original soil sample, and determine the target state information based on the initial state information;

[0013] Based on the initial state information and the target state information, the cutter head unit is controlled to cut the original soil sample on the main frame unit to obtain the target soil sample corresponding to the target state information.

[0014] In one embodiment, the initial state information includes the original dimensions and soil texture; the target state information includes the soil sample shape and soil sample size.

[0015] The step of controlling the cutter head unit to cut the original soil sample on the main frame unit according to the soil sample cutting information to obtain the target soil sample corresponding to the target state information includes:

[0016] Based on the original dimensions, the soil sample shape, and the soil sample dimensions, the cutter head unit is controlled to perform coarse cutting on the original soil sample to obtain a coarse-cut soil sample; wherein the shape and dimensions of the coarse-cut soil sample and the target soil sample are within a preset threshold range;

[0017] Based on the soil texture and the shape of the soil sample, determine the soil sample cutting information;

[0018] The coarse-cut soil sample is cut according to the soil sample cutting information to obtain the target soil sample.

[0019] In one embodiment, the cutter head unit includes: a cutter head main seat; a cutter assembly connected to the cutter head main seat; and a cutter head motor connected to the cutter head main seat for controlling the cutter assembly. The cutter assembly includes a wedge-shaped soil-cutting blade, a ring blade, a wire saw blade, a line blade, and a soil-cutting blade. The ring blade is connected to the center of the cutter head main seat. The wedge-shaped soil-cutting blade, the wire saw blade, the line blade, and the soil-cutting blade are respectively connected to the periphery of the cutter head main seat and surround the ring blade.

[0020] In one embodiment, the main frame unit includes: a fixed frame; an XY cross slide connected to the fixed frame; a Z-axis slide connected to the fixed frame; a rotary support connected to the fixed frame; and a tool disk main seat connected to the XY cross slide and the Z-axis slide, wherein the tool disk main seat and the rotary support are disposed opposite to each other.

[0021] In one embodiment, the soil texture includes hard soil and soft soil; the soil sample shape includes cuboid and cylindrical; the soil sample cutting information includes cutting methods for hard cylindrical, soft cylindrical, and cuboid.

[0022] The step of determining soil sample cutting information based on the soil texture and the soil sample shape includes:

[0023] When the soil sample is cylindrical and the original soil sample is hard soil, the soil sample cutting information is hard cylindrical cutting mode;

[0024] When the soil sample is cylindrical and the original soil sample is soft soil, the soil sample cutting information is soft cylindrical cutting mode;

[0025] When the soil sample is rectangular, the soil sample cutting information is a rectangular cutting method.

[0026] In one embodiment, the step of cutting the coarse-cut soil sample according to the soil sample cutting information to obtain the target soil sample includes:

[0027] When the soil sample cutting information is soft cylindrical cutting mode, the wire saw is controlled to remove the top soil sample of the coarse-cut soil sample so that the top of the coarse-cut soil sample is flat.

[0028] The ring cutter is controlled to align with the coarse-cut soil sample and move toward the coarse-cut soil sample. The coarse-cut soil sample on the rotating support is controlled to rotate so that the ring cutter enters the coarse-cut soil sample until the ring cutter is completely in close contact with the coarse-cut soil sample.

[0029] The target soil sample is obtained by removing the ring cutter and the coarse-cut soil sample inside the ring cutter.

[0030] In one embodiment, the step of cutting the coarse-cut soil sample according to the soil sample cutting information to obtain the target soil sample further includes:

[0031] When the soil sample cutting information is cuboid cutting mode, the wedge-shaped soil cutting blade is controlled to align with the coarse-cut soil sample and cut the coarse-cut soil sample to eliminate the edges and protrusions of the coarse-cut soil sample, thereby obtaining the target soil sample.

[0032] In one embodiment, the fixed frame includes: a base plate and a top plate; and a plurality of profiles, each of which is connected to the base plate and the top plate at both ends.

[0033] The XY cross slide table includes: a first motor and a second motor; a first linear guide and a second linear guide at right angles; a first lead screw connected to the first motor; a second lead screw connected to the second motor; and a linear guide slide table connected to the first lead screw and the second lead screw.

[0034] The Z-axis slide includes: a third motor; a third lead screw connected to the third motor; and a nut that is vertically connected to the third lead screw; wherein the linear guide slide is connected to the tool disc main seat, and the first motor and the second motor are connected to the nut.

[0035] In one embodiment, the rotating support includes: a fourth motor; a support connected to the fourth motor; and a rotating platform connected to the fourth motor for placing the original soil sample.

[0036] In one embodiment, the device further includes a control and monitoring unit, which is connected to the main frame unit and the tool disc unit respectively;

[0037] The control and monitoring unit includes: a control circuit board connected to the tool head motor, the XY cross slide, and the Z-axis slide; a display panel connected to the control circuit board; and a monitoring camera connected to the control circuit board for acquiring cutting images.

[0038] Beneficial Effects: This invention provides a control method for an automatic soil sample preparation device, wherein the device includes: a main frame unit for placing the original soil sample; and a cutter disc unit connected to the main frame unit. The control method includes: acquiring initial state information of the original soil sample and determining target state information based on the initial state information; and controlling the cutter disc unit to cut the original soil sample on the main frame unit according to the initial state information and the target state information to obtain the target soil sample corresponding to the target state information. This invention, through the connection between the main frame unit and the cutter disc unit, facilitates the cutting of the original soil sample in three-dimensional space when different target shapes and sizes need to be prepared, thereby simplifying the preparation steps and improving the cutting quality, and thus expanding the applicability of the device. Attached Figure Description

[0039] Figure 1 This is a plan view of the automatic soil sample preparation device of the present invention;

[0040] Figure 2 This is a front view of the automatic soil sample preparation device of the present invention;

[0041] Figure 3 This is a top view of the XY cross slide of the automatic soil sample preparation device of the present invention;

[0042] Figure 4 This is a flowchart of the control method for the automatic cutting and soil sample preparation device of the present invention.

[0043] Explanation of reference numerals in the attached figures:

[0044] 110-XY axis slide; 120-Z axis slide; 131-rotary table; 132-fourth motor; 133-support; 150-third motor; 160-base plate; 170-shield; 310-tool disc main seat; 320-tool assembly; 321-ring cutter; 500-original soil sample. Detailed Implementation

[0045] This invention provides a control method for an automatic soil sample preparation device. To make the objectives, technical solutions, and effects of this invention clearer and more explicit, the invention is further described in detail below. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0046] It should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to screw installation or snap-fit ​​installation; fixed connection or detachable connection; direct connection or indirect connection through an intermediate medium. When a component is referred to as being "fixed to" or "set on" another component, it can be directly or indirectly attached to that other component. When a component is referred to as being "connected to" another component, it can be directly or indirectly connected to that other component.

[0047] It should also be noted that the same or similar reference numerals in the accompanying drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting the present patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0048] Existing improved geotechnical cutting and preparation devices mainly operate manually or semi-automatically. The entire cutting and soil sample preparation process is slow, requiring skilled, careful, and focused operators with a high level of technical proficiency. Some devices using electric cutting also face the following problems: they do not address the principles of soil sample preparation and cannot achieve arbitrary cutting and preparation of soil samples in three-dimensional space; their applicability is limited, often only suitable for a specific type of geotechnical test, lacking universality; and their complex structure results in low automation, numerous operating steps, and poor controllability.

[0049] like Figures 1 to 3 As shown, an automatic soil sample preparation device of the present invention includes:

[0050] The main frame unit is used to place the original soil sample;

[0051] The tool disk unit is connected to the main frame unit;

[0052] A control and monitoring unit is connected to the main frame unit and the tool disc unit respectively, and is used to control the main frame unit and the tool disc unit.

[0053] Specifically, the main frame unit is used to control three-dimensional motion. The main frame unit is the main motion and support component for arbitrarily cutting and preparing soil samples in space. The main structure includes: support assembly (i.e., fixed frame), Z-axis slide assembly, XY cross slide assembly and rotary support assembly; the tool disc unit includes wedge cutters, ring cutters and wire cutters and other tools; the control and monitoring unit is the control center of the entire device.

[0054] The automatic soil sample preparation device of the present invention is used to solve the problems of how to achieve arbitrary three-dimensional cutting in current soil sample preparation, and how to improve the ease of operation, preparation efficiency, automation level, and target soil sample quality, so as to achieve the goal of high-quality, fast, simple and practical automatic soil sample preparation.

[0055] In a preferred implementation of this invention, such as Figure 1 or Figure 2 As shown, the tool disk unit includes:

[0056] Tool turret main seat 310 (i.e., tool turret base);

[0057] The tool assembly 320 is connected to the tool disk main seat 310;

[0058] A tool disk motor is connected to the tool disk main seat 310 and is used to control the tool assembly 320;

[0059] The tool assembly 320 includes a wedge-shaped soil-cutting blade, a ring blade, a wire saw blade, a line blade, and a soil-cutting blade. The ring blade 321 is connected to the center of the tool disc main seat 310. The wedge-shaped soil-cutting blade, the wire saw blade, the line blade, and the soil-cutting blade are respectively connected to the periphery of the tool disc main seat 310 and surround the ring blade.

[0060] Specifically, such as Figure 2 As shown, the cutter head unit is equipped with various soil cutting tools and is the core component for cutting soil samples. Its main components are: a stepper motor (i.e., the cutter head motor, which can also be a servo motor or brushless motor), a cutter head main seat 310, and a tool assembly (wedge-shaped soil cutter, ring cutter, wire saw, line cutter, and soil cutting blade). The wedge-shaped soil cutter, wire saw, line cutter, and soil cutting blade are circumferentially distributed on the cutter head main seat and are used to cut away excess soil sample; while the ring cutter is located at the center of the cutter head main seat and is responsible for preserving the cut soil sample.

[0061] It should be noted that different cutting tools are switched for cutting based on the original soil sample and the target soil sample (i.e., the desired soil sample). In other words, the cutting tools are switched specifically according to the different shapes and states of the original soil sample to achieve cutting of the soil sample in various shapes.

[0062] In a preferred implementation of this invention, such as Figure 1 , Figure 2 or Figure 3 As shown, the main frame unit includes:

[0063] Fixed frame;

[0064] The XY cross slide 110 is connected to the fixed frame;

[0065] At least two Z-axis slides 120 arranged opposite to each other are connected to the fixed frame;

[0066] A rotating support is connected to the fixed frame;

[0067] The tool disk main seat is connected to the XY cross slide and the Z-axis slide, and the tool disk main seat is arranged opposite to the rotary support.

[0068] In another implementation, the main frame unit uses a 9-axis robot or hydraulic power control for three-dimensional motion.

[0069] In a preferred embodiment of the present invention, the fixed frame includes: a base plate 160 (i.e., a base plate) and a top plate; a plurality of profiles, each of which is connected to the base plate and the top plate at both ends;

[0070] The XY cross slide table includes: a first motor and a second motor; a first linear guide and a second linear guide at right angles; a first lead screw connected to the first motor; a second lead screw connected to the second motor; and a linear guide slide table connected to the first lead screw and the second lead screw.

[0071] The Z-axis slide includes: a third motor; a third lead screw connected to the third motor; and a nut that is vertically connected to the third lead screw; wherein the linear guide slide is connected to the tool disc main seat (i.e., rotatably connected), and the first motor and the second motor are connected to the nut.

[0072] The rotating support includes: a fourth motor 132; a support 133 connected to the fourth motor; and a rotating platform 131 connected to the fourth motor for placing the original soil sample.

[0073] Specifically, the support assembly forms the fixed frame of the entire device, mainly composed of aluminum alloy profiles, connecting corner fittings, uprights, a base plate, and a top plate. This fixed frame is a common support in the existing technical field. The aluminum alloy profiles are connected to the top and bottom plates via connecting corner fittings, and the uprights are installed between the top and bottom plates, forming a stable support structure. The Z-axis slide assembly consists of one each on the left, right, front, and rear, arranged separately. It mainly includes: a stepper motor (i.e., a third motor, or a servo motor, etc.), a ball screw, a ball nut, and a cover plate. The XY cross slide assembly consists of two slides connected at right angles, forming an XY dual-axis motion configuration. Each slide mainly includes: a stepper motor (or servo motor), a coupling, a fixing frame, a ball screw, a linear guide, a linear guide slide, and an aluminum alloy profile. The rotating support assembly includes: a support, a stepper motor (or servo motor), a rotating table, and a slider. It is used for fixing and rotating the undisturbed soil sample and, together with the axial ball screw assembly, provides axial motion functionality.

[0074] Furthermore, such as Figure 1As shown, a pad 170 is provided at the lower end of the base plate 130 (i.e., the base). The Z-axis slide is located on both sides of the base plate 130, and four third motors 150 are mounted on the base plate. The ends of the third motors are connected to third lead screws, and nuts are threadedly connected to the third lead screws. Two opposite nuts are connected to first motors, the ends of which are connected to first lead screws. Two other nuts are connected to second motors, the ends of which are connected to second lead screws. The first and second lead screws are at right angles. The first and second lead screws are threadedly connected to the linear guide slide, and the linear guide slide is fixedly connected to the tool holder 310. Thus, by starting the first motor and... The second motor controls the horizontal position (i.e., the coordinates in the horizontal direction) of the tool disc main seat 310, and controls the longitudinal position of the XY cross slide by starting the third motor, thereby controlling the vertical position (i.e., the coordinates in the vertical direction) of the tool disc main seat 310, thus obtaining the three-dimensional coordinates of the tool disc main seat; and the tool disc motor on the tool disc main seat 310 is fixedly connected to the linear guide slide, the tool disc motor drives the rotation of the tool disc main seat 310, thereby controlling the tool assembly to select different tools, such as one of the following: wedge-shaped soil cutting knife, wire saw knife, line cutting knife and soil cutting knife, so as to cut the original soil sample in different states.

[0075] In a preferred embodiment of the present invention, the control and monitoring unit includes:

[0076] The control circuit board is connected to the tool disk motor, the XY cross slide, and the Z-axis slide;

[0077] The display panel is connected to the control circuit board;

[0078] A surveillance camera, connected to the control circuit board, is used to capture cutting images.

[0079] The work steps are as follows:

[0080] Input the target soil sample dimensions into the program; place the original soil sample on the base and fix it in place; turn on the device switch, and the device reads the cutting program to perform soil sample cutting; during soil sample cutting, under the control of the XY cross slide, Z-axis slide and cutter head motor, the cutting tool precisely cuts the original soil sample, while the ring cutter preserves the cut soil sample; after the soil sample cutting is completed, remove the soil sample and turn off the device.

[0081] Compared with existing technologies, the key innovations of this invention are as follows: First, in terms of application scenarios, before soil sample cutting, the soil sample cutting shape is input into the program, and the program automatically plans the cutting process and controls the motor and cutter to automatically complete the three-dimensional cutting of the soil sample, cutting the soil sample into the target shape; Second, in terms of cutting methods, the proposed cutting disc and cutter types are wide-ranging and can be adapted to soils of different shapes and states, and can automatically switch cutters to achieve cutting of soil samples in various shapes; Third, in terms of cutting quality, the use of a high-precision motor (stepper motor or servo motor) combined with a ball screw motion mode can achieve precise control of cutting, realize soil sample cutting in a precise and fast manner, and ensure the cutting and shaping quality of the soil sample.

[0082] Based on any of the above-described automatic soil sample preparation apparatus, the present invention also provides a preferred embodiment of a control method for the automatic soil sample preparation apparatus:

[0083] like Figure 4 As shown, the control method of the automatic soil sample preparation device of the present invention includes the following steps:

[0084] Step S100: Obtain the initial state information of the original soil sample, and determine the target state information based on the initial state information.

[0085] In one implementation, the initial state information includes the original dimensions and soil texture; the target state information includes the soil sample shape and soil sample size; the soil texture includes hard soil and soft soil; the soil sample shape includes cuboid and cylindrical; but not limited thereto, in another implementation, the soil sample shape also includes polygonal shape.

[0086] Specifically, the texture (i.e., soil texture) and original size of the collected original soil sample are first determined. According to the soil sample test requirements and based on the original size and soil texture, the soil sample shape and soil sample size of the target soil sample (i.e., the target shape and target size of the target soil sample that meet the soil sample test requirements) are determined.

[0087] Next, turn on the device switch, place the original soil sample on the rotating platform, and tighten the nuts on the fixing base. In the device control software interface, input the target shape and size of the soil sample to be cut, which conforms to the soil sample testing standards, such as: soil sample shape (cylindrical, cuboid, etc.), soil sample dimensions (outer diameter * height, length * width * height, etc.). The software automatically converts the above target soil sample parameters into motor motion procedures.

[0088] Step S200: Based on the initial state information and the target state information, control the cutter head unit to cut the original soil sample on the main frame unit to obtain the target soil sample corresponding to the target state information.

[0089] Step S200 specifically includes:

[0090] Step S210: Based on the original dimensions, the soil sample shape, and the soil sample size, control the cutter disc unit to perform coarse cutting on the original soil sample to obtain a coarse-cut soil sample; wherein the shape and size of the coarse-cut soil sample and the target soil sample are within a preset threshold range.

[0091] Specifically, step S210 includes:

[0092] Step S211: Determine the coarse cutting angle and coarse cutting speed based on the original dimensions, the soil sample shape, and the soil sample dimensions;

[0093] Step S212: Determine the coarse cutting movement path of the soil cutting blade according to the coarse cutting slope angle and the coarse cutting speed, and start the first motor, the second motor and the third motor according to the coarse cutting movement path, and control the main seat of the cutter disc to drive the soil cutting blade to move so that the soil cutting blade cuts the original soil sample to obtain a coarse cut soil sample.

[0094] Specifically, the target shape of the target soil sample is basically the same as that of the coarse-cut soil sample, and the shape and size of the coarse-cut soil sample (i.e., the point cloud coordinates around the coarse-cut soil sample, obtained through a monitoring camera) is slightly larger than the soil sample size of the target soil sample (i.e., the coordinate data around the target soil sample).

[0095] Further, clicking the start button automatically loads the soil sample cutting program into the soil sample cutting process. During soil sample cutting, under the control of the XY cross slide, Z-axis slide, and cutter head motor, wedge-shaped cutting blades, ring cutters, wire saw blades, wire cutters, and cutting blades are used. The cutting blades on the cutting cutter head, controlled by the X, Y, and Z axes (i.e., controlled by the first, second, and third motors), move in three-dimensional space to initially remove the original soil sample. This step is called rough cutting, which cuts the original soil sample into a rough approximation of the target soil sample shape and size.

[0096] Step S220: Determine soil sample cutting information based on the soil texture and soil sample shape.

[0097] In one implementation, the soil sample cutting information includes hard cylindrical cutting method, soft cylindrical cutting method, and cuboid cutting method.

[0098] Step S220 specifically includes:

[0099] Step S221: When the soil sample is cylindrical and the original soil sample is hard soil, the soil sample cutting information is hard cylindrical cutting mode;

[0100] Step S222: When the soil sample is cylindrical and the original soil sample is soft soil, the soil sample cutting information is soft cylindrical cutting mode;

[0101] Step S223: When the soil sample is rectangular, the soil sample cutting information is rectangular cutting mode.

[0102] Specifically, different cutting methods need to be adjusted to meet different target soil samples, thereby achieving the goal of cutting soil samples of different shapes.

[0103] Step S230: Cut the coarse-cut soil sample according to the soil sample cutting information to obtain the target soil sample.

[0104] It should be noted that if the target soil sample is rectangular, the cutting tool disc rotates to the wedge-shaped cutting tool (i.e., the cutting tool disc motor is controlled to select it), moves in three-dimensional space to the target soil sample, and uses the wedge-shaped cutting tool to further cut the soil sample, removing excess edges and protrusions to make the soil sample shape and size meet the requirements; if the target soil sample is cylindrical, the cutting tool disc rotates to the wire cutter or wire saw (if the soil sample is relatively soft, use the wire saw; if the soil sample is relatively hard, use the wire cutter) to remove excess top soil sample.

[0105] Step S230 specifically includes:

[0106] Step S231: When the soil sample cutting information is soft cylindrical cutting mode, control the wire saw to remove the top soil sample of the coarse-cut soil sample so that the top of the coarse-cut soil sample is flat.

[0107] Specifically, the control tool disc motor selects the wire saw blade, and according to the shape and size of the soil sample, the third motor is started to control the movement of the wire saw blade so that the wire saw blade is in the cutting position (i.e., the Z-axis coordinate where the wire saw blade needs to perform horizontal cutting in the vertical direction). According to the cutting position of the wire saw blade, the first motor and the second motor are started, and the tool disc main seat is controlled to drive the wire saw blade to move horizontally so that the wire saw blade can remove the top soil sample of the coarsely cut soil sample.

[0108] Step S232: Control the ring cutter to align with the coarse-cut soil sample and move towards the coarse-cut soil sample, and control the coarse-cut soil sample on the rotating support to rotate so that the ring cutter enters the coarse-cut soil sample until the ring cutter is completely in close contact with the coarse-cut soil sample.

[0109] Specifically, the control tool disc motor selects a wedge-shaped cutting blade, and based on the shape and size of the soil sample, activates the first and second motors to move the wedge-shaped cutting blade so that it is positioned on the outer side (i.e., the wedge-shaped cutting blade needs to perform vertical cutting in the horizontal direction, meaning the X and Y axis coordinates remain unchanged). Based on the outer position of the wedge-shaped cutting blade, the ring cutter at the center of the tool disc main seat is aligned with the coarse-cut soil sample. The third motor is then activated, controlling the tool disc main seat to drive the wedge-shaped cutting blade and the ring cutter to move vertically, allowing the ring cutter to enter the coarse-cut soil sample and remove the soil sample outside the ring cutter. The ring cutter at the center of the tool disc is aligned with the center of the soil sample, and in coordination with the movement of the X, Y, and Z axis slides, it is slowly pressed down until the ring cutter is completely in contact with the inner soil sample. Finally, the bottom rotary table is rotated to remove excess soil sample outside the ring cutter.

[0110] Step S233: Remove the ring cutter and the coarse soil sample inside the ring cutter to obtain the target soil sample.

[0111] Specifically, after the soil sample cutting is completed, the target soil sample is removed and the device is turned off. Then, the ring cutter is removed, and the target soil sample is used for testing.

[0112] Step S230 further includes:

[0113] Step S234: When the soil sample cutting information is hard cylindrical cutting mode, control the wire cutter to remove the top soil sample of the coarse-cut soil sample so that the top of the coarse-cut soil sample is flat.

[0114] Specifically, the control tool disc motor selects the wire cutter, and according to the shape and size of the soil sample, the third motor is activated to control the movement of the wire cutter so that the wire cutter is in the cutting position (i.e., the Z-axis coordinate where the wire cutter needs to perform horizontal cutting in the vertical direction). According to the cutting position of the wire cutter, the first motor and the second motor are activated, and the control tool disc main seat drives the wire cutter to move horizontally so that the wire cutter can remove the top soil sample of the coarsely cut soil sample.

[0115] Step S235: Control the ring cutter to align with the coarse-cut soil sample and move towards the coarse-cut soil sample, and control the coarse-cut soil sample on the rotating support to rotate so that the ring cutter enters the coarse-cut soil sample until the ring cutter is completely in close contact with the coarse-cut soil sample.

[0116] Specifically, the control tool disc motor selects a wedge-shaped cutting blade, and according to the shape and size of the soil sample, the first and second motors are activated to control the movement of the wedge-shaped cutting blade so that it is positioned on the outer side (i.e., the wedge-shaped cutting blade needs to perform vertical cutting in the horizontal direction, i.e., the X-axis and Y-axis coordinates remain unchanged). Based on the outer position of the wedge-shaped cutting blade, the ring cutter at the center of the tool disc main seat is facing the coarse-cut soil sample. The third motor is activated, and the tool disc main seat is controlled to drive the wedge-shaped cutting blade and the ring cutter to move vertically so that the ring cutter enters the coarse-cut soil sample and the wedge-shaped cutting blade removes the soil sample outside the ring cutter.

[0117] Step S236: Remove the ring cutter and the coarse soil sample inside the ring cutter to obtain the target soil sample.

[0118] Step S230 further includes the following step:

[0119] Step S237: When the soil sample cutting information is cuboid cutting mode, control the wedge-shaped soil cutting blade to align with the coarse-cut soil sample and cut the coarse-cut soil sample to eliminate the edges and protrusions of the coarse-cut soil sample and obtain the target soil sample.

[0120] Step S237 specifically includes:

[0121] Step S2371: Determine the fine cutting angle and fine cutting speed based on the shape and size of the soil sample;

[0122] Step S2372: Determine the fine cutting movement path of the wedge-shaped soil cutting blade according to the fine cutting slope angle and the fine cutting speed, and start the first motor, the second motor and the third motor according to the fine cutting movement path, and control the main seat of the cutter disc to drive the wedge-shaped soil cutting blade to move, so that the wedge-shaped soil cutting blade cuts the coarse soil sample to obtain the fine-cut soil sample.

[0123] Specifically, the cutter head motor is started to rotate the cutter head main seat to the wedge-shaped soil cutting blade. The wedge-shaped soil cutting blade is aligned with the coarse-cut soil sample and moves in three-dimensional space. The wedge-shaped soil cutting blade is used to further cut the coarse-cut soil sample, removing excess edges and protrusions to make the shape and size of the soil sample meet the requirements. After the soil sample is cut, the soil sample is removed and the device is turned off. The obtained target soil sample is placed in the cuboid open test box.

[0124] It should be understood that the application of the present invention is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A control method for an automatic soil sample preparation device, characterized in that, The device includes: The main frame unit is used to place the original soil sample; The tool disk unit is connected to the main frame unit; The control method includes: Obtain the initial state information of the original soil sample, and determine the target state information based on the initial state information; Based on the initial state information and the target state information, the tool disc unit is controlled to cut the original soil sample on the main frame unit to obtain the target soil sample corresponding to the target state information. The initial state information includes the original dimensions and soil texture; the target state information includes the soil sample shape and soil sample size. The step of controlling the cutter head unit to cut the original soil sample on the main frame unit according to the initial state information and the target state information to obtain the target soil sample corresponding to the target state information includes: Based on the original dimensions, the soil sample shape, and the soil sample dimensions, the cutter head unit is controlled to perform coarse cutting on the original soil sample to obtain a coarse-cut soil sample; wherein the shape and dimensions of the coarse-cut soil sample and the target soil sample are within a preset threshold range; Based on the soil texture and the shape of the soil sample, determine the soil sample cutting information; The coarse-cut soil sample is cut according to the soil sample cutting information to obtain the target soil sample; The tool disc unit includes: Tool turret main seat; The tool assembly is connected to the tool disk main seat; A tool disk motor, connected to the tool disk main seat, is used to control the tool assembly; The cutting tool assembly includes a wedge-shaped soil-cutting blade, a ring blade, a wire saw blade, a line blade, and a soil-cutting blade. The ring blade is connected to the center of the main body of the cutting tool disc. The wedge-shaped soil-cutting blade, the wire saw blade, the line blade, and the soil-cutting blade are respectively connected to the periphery of the main body of the cutting tool disc and surround the ring blade. The main frame unit includes: Fixed frame; The XY cross slide is connected to the fixed frame; The Z-axis slide is connected to the fixed frame. A rotating support is connected to the fixed frame; The tool disk main seat is connected to the XY cross slide and the Z-axis slide, and the tool disk main seat is arranged opposite to the rotary support; The soil texture includes hard soil and soft soil; the soil sample shape includes cuboid and cylindrical; the soil sample cutting information includes cutting methods for hard cylindrical, soft cylindrical, and cuboid. The step of determining soil sample cutting information based on the soil texture and the soil sample shape includes: When the soil sample is cylindrical and the original soil sample is hard soil, the soil sample cutting information is hard cylindrical cutting mode; When the soil sample is cylindrical and the original soil sample is soft soil, the soil sample cutting information is soft cylindrical cutting mode; When the soil sample is rectangular, the soil sample cutting information is a rectangular cutting method; The step of cutting the coarse-cut soil sample according to the soil sample cutting information to obtain the target soil sample includes: When the soil sample cutting information is soft cylindrical cutting mode, the wire saw is controlled to remove the top soil sample of the coarse-cut soil sample so that the top of the coarse-cut soil sample is flat. The ring cutter is controlled to align with the coarse-cut soil sample and move toward the coarse-cut soil sample. The coarse-cut soil sample on the rotating support is controlled to rotate so that the ring cutter enters the coarse-cut soil sample until the ring cutter is completely in close contact with the coarse-cut soil sample. The target soil sample is obtained by removing the ring cutter and the coarse-cut soil sample inside the ring cutter. When the soil sample cutting information is in the hard cylindrical cutting mode, the wire cutter is controlled to remove the top soil sample of the coarse-cut soil sample to make the top of the coarse-cut soil sample flat; the ring cutter is controlled to be aligned with the coarse-cut soil sample and move towards the coarse-cut soil sample, and the coarse-cut soil sample on the rotating support is controlled to rotate so that the ring cutter enters the coarse-cut soil sample until the ring cutter is completely in close contact with the coarse-cut soil sample; the ring cutter and the coarse-cut soil sample inside the ring cutter are removed to obtain the target soil sample; When the soil sample cutting information is cuboid cutting mode, the wedge-shaped soil cutting blade is controlled to align with the coarse-cut soil sample and cut the coarse-cut soil sample to eliminate the edges and protrusions of the coarse-cut soil sample, thereby obtaining the target soil sample.

2. The control method for the automatic soil sample preparation device according to claim 1, characterized in that, The fixed frame includes: Base plate and top plate; Multiple profiles, each of which is connected to a bottom plate and a top plate at both ends; The XY cross slide includes: First motor and second motor; The first and second linear guides are perpendicular to each other; The first leadscrew is connected to the first motor; The second lead screw is connected to the second motor; A linear guide slide is connected to the first lead screw and the second lead screw; The Z-axis slide includes: Third motor; The third lead screw is connected to the third motor; The nut is connected to the third lead screw for lifting; The linear guide slide is connected to the main seat of the tool disc, and the first motor and the second motor are connected to the nut.

3. The control method for the automatic soil sample preparation device according to claim 2, characterized in that, The rotating support includes: Fourth motor; The support is connected to the fourth motor; A rotating platform, connected to the fourth motor, is used to place the original soil sample.

4. The control method for the automatic soil sample preparation device according to claim 1, characterized in that, The device further includes: A control and monitoring unit is connected to the main frame unit and the tool disk unit, respectively. The control and monitoring unit includes: The control circuit board is connected to the tool disk motor, the XY cross slide, and the Z-axis slide; The display panel is connected to the control circuit board; A surveillance camera, connected to the control circuit board, is used to capture cutting images.

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