Soil sample cracking testing device

Abstract

The utility model relates to a soil sample cracking testing device which comprises a closed box body, and a sample base, an LED lamp, an industrial camera, an electronic balance and a water replenishing device which are arranged in the closed box body, the electronic balance is arranged at the bottom of the closed box body, the sample base is arranged at the upper part of the electronic balance, the industrial camera and the LED lamp are arranged above the sample base, and the industrial camera and the LED lamp illuminate the sample base; the sample base comprises a communicating vessel base and a permeable plate, the permeable plate is arranged at the upper part of the communicating vessel base, the upper surface of the permeable plate is used for placing a soil sample, the water replenishing device is communicated with the bottom of the communicating vessel base through a pipeline, and an on-off electromagnetic valve is arranged on the pipeline. According to the soil sample cracking test device, the sample base comprises the communicating vessel base and the permeable plate, and the water replenishing device is communicated with the bottom of the communicating vessel base for replenishing water, so that water flow humidifies the soil sample from the bottom of the soil sample, the disturbance to the soil sample is small, and the stability of a soil sample cracking test result is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to soil sample cracking test technical field especially relates to a soil sample cracking testing device. BACKGROUND

[0002] In the field of soil research, soil sample cracking test is one of the important tests for characterizing the mechanical properties and physical properties of soil, and is widely used in engineering geology, agriculture and environmental science and other fields.

[0003] Chinese patent document CN113310840A discloses a soft rock water absorption fissure expansion test device, which comprises an environment control system, a test operation system and a data acquisition system, wherein: the environment control system comprises a closed system formed by a test box and an operation door, and an LED lamp, a heater and a humidifier arranged in the test box; the light source in the closed environment is single and stable by adjusting the LED lamp; the test operation system comprises a sample dish arranged in the test box, a water-permeable stone arranged in the sample dish, a sample arranged on the upper part of the water-permeable stone, and a water supply tank arranged in the test box, which is communicated with the sample dish through a pipeline. The defects and deficiencies of the soft rock water absorption fissure expansion test device are: (1) the water supply tank is communicated with the side wall of the sample dish through a pipeline, and the side wall directly guides the water flow into the sample dish to contact with the soil sample in the sample dish, which not only causes uneven contact, but also has great disturbance to the soil sample, thereby adversely affecting the stability of the experimental results; (2) the interface between the pipeline and the sample dish is prone to leakage, which causes water droplets to adhere to the outer side wall of the sample dish, affecting the accuracy of soil sample quality detection.

[0004] Therefore, it is urgent to provide a soil sample cracking test device with uniform water supply and small disturbance to the soil sample. UTILITY MODEL CONTENT

[0005] (I) Technical problem to be solved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a soil sample cracking test device, which solves the technical problem of uneven water supply to the soil sample by the existing soil sample cracking test device, affecting the stability of the test results.

[0007] (II) Technical scheme

[0008] In order to achieve the above-mentioned purpose, the main technical scheme adopted by the utility model comprises:

[0009] The utility model embodiment provides a soil sample cracking test device, which comprises a closed box body, a sample base arranged in the closed box body, an LED lamp, an industrial camera, an electronic balance and a water replenishing device.

[0010] The electronic balance is arranged at the bottom of the internal space of the closed box body, the upper part of the electronic balance is provided with a sample base, an industrial camera and an LED lamp are arranged above the sample base, and the industrial camera and the LED lamp are arranged to illuminate the sample base;

[0011] The sample base comprises a communicating vessel base and a water-permeable plate, the upper part of the communicating vessel base is provided with the water-permeable plate, the upper surface of the water-permeable plate is used for placing the soil sample, and a water supplementing device is communicated with the bottom of the communicating vessel base through a pipeline, and a on-off electromagnetic valve is arranged on the pipeline.

[0012] Optionally, the water-permeable plate is a porcelain clay plate or a water-permeable stone plate, and an annular mounting groove is formed in the inner side wall of the communicating vessel base, and the peripheral edge of the water-permeable plate is arranged in the annular mounting groove.

[0013] Optionally, the upper part of the communicating vessel base is provided with a ring cutter sheath, and the ring cutter sheath encloses a space for placing the soil sample.

[0014] Optionally, the water supplementing device comprises a water tank, a stainless steel capillary tube arranged in the vertical direction and a transparent tube.

[0015] The water outlet end of the water tank is communicated with the water inlet end of the on-off electromagnetic valve, the water outlet end of the on-off electromagnetic valve is communicated with one end of the stainless steel capillary tube, the other end of the stainless steel capillary tube is communicated with one end of the transparent tube, the other end of the transparent tube is communicated with the bottom of the communicating vessel base, the outer side wall of the transparent tube is provided with a non-contact liquid level meter, and the non-contact liquid level meter and the water-permeable plate are arranged at the same height position.

[0016] Optionally, the transparent tube is a thin-walled acrylic tube, and the non-contact liquid level meter is a laser liquid level meter.

[0017] Optionally, an O-ring is arranged at the connection between the bottom of the communicating vessel base and the transparent tube, and the O-ring is used for sealing the gap between the transparent tube and the communicating vessel base.

[0018] Optionally, the soil sample cracking test device further comprises an optical platform, an upper support, a cross beam and two guide shafts.

[0019] The optical platform is arranged at the bottom of the internal space of the closed box body and located at the lower part of the electronic balance, two guide shafts extending in the vertical direction are arranged on the left and right sides of the electronic balance, the lower ends of the two guide shafts are fixedly arranged on the optical platform, the upper ends of the two guide shafts are connected with the two ends of the upper support, respectively, the two ends of the cross beam are provided with quick locking linear bearings, the quick locking linear bearings are correspondingly sleeved on the periphery of the guide shafts, and the industrial camera, the water tank and the LED lamp are mounted on the cross beam.

[0020] Optionally, a dovetail guide rail extending along the length direction of the cross beam is arranged on the cross beam, a hand-adjusting sliding block is slidably arranged on the dovetail guide rail, and the industrial camera is mounted on the hand-adjusting sliding block through a camera support.

[0021] Optionally, the temperature and humidity sensor mounting plate and the temperature and humidity sensor are further included.

[0022] One end of the temperature and humidity sensor mounting plate is connected with the guide shaft, and the other end of the temperature and humidity sensor mounting plate is mounted with the temperature and humidity sensor, and the temperature and humidity sensor is located above the sample base.

[0023] Optionally, the sealed box body includes a front door frame and a shell body.

[0024] The front side of the shell body is provided with an opening, the outer side edge of the front door frame is hinged to the opening of the shell body, and the inner side of the front door frame is provided with a translucent tea-colored acrylic plate.

[0025] (Three) beneficial effects

[0026] The beneficial effects of the utility model are: the utility model discloses a soil sample cracking test device, because including sealed box body, setting in the inside of sealed box body sample base, LED lamp, industrial camera, electronic balance and water replenishing device, electronic balance sets up in the bottom of the inside space of sealed box body, and the upper portion of electronic balance sets up sample base, and the upper portion of sample base sets up industrial camera and LED lamp, and industrial camera and LED lamp are illuminated to sample base, and sample base includes communicating vessel base and water permeable plate, and the upper portion of communicating vessel base is provided with water permeable plate, and the upper surface of water permeable plate is used to place soil sample, and water replenishing device is communicated with the bottom of communicating vessel base through pipeline, and sets up on -off electromagnetic valve on this pipeline, relative to prior art, the utility model discloses a soil sample cracking test device, because sample base adopts communicating vessel base and water permeable plate, and water permeable plate divides the inside of communicating vessel base into two cavities, and the upper cavity is used to place soil sample, and water replenishing device is replenished to the lower cavity, and the liquid level of water gradually rises and covers water permeable plate, and the soil sample is evenly infiltrated, humidified from the bottom of soil sample, and in this process, the upper surface of soil sample is less disturbed by water flow, which improves the stability and reliability of soil sample cracking test result. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is the sample base, temperature and humidity control assembly and measuring assembly of the embodiment 1 of the soil sample cracking test device of the utility model, and it is a three-dimensional schematic view.

[0028] Figure 2 It is the sectional view of the sample base in Figure 1

[0029] Figure 3 It is the sealed box body of the embodiment 2 of the soil sample cracking test device of the utility model, and it is a three-dimensional schematic view.

[0030]

Explanation of the drawings

[0031] ​1: Optical platform; 2: Support mounting plate; 3: Guide shaft support; 4: Guide shaft; 5: Temperature and humidity sensor mounting plate; 6: Temperature and humidity sensor; 7: Crossbeam; 8: Quick-locking linear bearing; 9: Dovetail guide rail; 10: Manually adjustable slider; 11: Camera bracket; 12: Upper bracket; 13: Industrial camera; 14: Lamp bracket; 15: Water tank; 16: LED light; 17: Water tank bracket; 18: Solenoid valve mounting plate; 19: Electronic balance; 20: Communicating vessel base; 21: Annular mounting groove; 22: Permeable plate; 23: Ring cutter sleeve; 24: On / off solenoid valve; 25: Stainless steel capillary tube; 26: Transparent tube; 27: Non-contact level gauge; 28: O-ring; 29: Drain outlet; 30: Front door handle; 31: Semi-transparent brown acrylic sheet; 32: Front door frame; 33: Outer shell body; 34: Digital display thermostat; 35: Main power switch; 36: Temperature control switch; 37: Light switch. Detailed Implementation

[0032] To better explain and facilitate understanding of this utility model, a detailed description of its specific embodiments is provided below with reference to the accompanying drawings. In this document, directional terms such as "front," "rear," "left," "right," "up," and "down" are used interchangeably with other directional terms. Figure 1 The orientation is used as a reference. It should be noted that in this embodiment, "left and right direction" refers to "horizontal direction".

[0033] Example 1:

[0034] Reference Figure 1 and Figure 2 This embodiment provides a soil sample cracking test device, including a sealed box, a sample base disposed inside the sealed box, an LED light 16, an industrial camera 13, an electronic balance 19, and a water replenishment device.

[0035] The electronic balance 19 is located at the bottom of the internal space of the sealed box. The sample base is located on the upper part of the electronic balance 19. An industrial camera 13 and an LED light 16 are located above the sample base. The LED light 16 is directed towards the sample base to ensure the brightness inside the sealed box and avoid interference from sunlight and indoor light. The industrial camera 13 is directed towards the sample base to capture the surface morphological changes of the soil sample.

[0036] The sample base includes a communicating vessel base 20 and a permeable plate 22. The permeable plate 22 is installed on the upper part of the communicating vessel base 20, and the upper surface of the permeable plate 22 is used to place the soil sample. The water supply device is connected to the bottom of the communicating vessel base 20 through a pipeline, and an on / off solenoid valve 24 is installed on the pipeline to control the on / off of the pipeline. It should be further noted that the communicating vessel base 20 is a hollow cylindrical structure, closed at the lower end and open at the upper end.

[0037] The soil sample cracking testing device of the embodiment has the following advantages: the inner side wall of the communicating vessel base 20 is provided with the annular installation groove 21, and the four peripheral edges of the water-permeable plate 22 are arranged in the annular installation groove 21.

[0038] In the embodiment, the inner side wall of the communicating vessel base 20 is provided with the annular installation groove 21, and the four peripheral edges of the water-permeable plate 22 are arranged in the annular installation groove 21.

[0039] Preferably, the water-permeable plate 22 is a porcelain plate or a water-permeable stone plate. The porcelain plate and the water-permeable stone plate have the advantage of having a certain water absorption capacity, and can absorb water before supplying water to the soil sample during the test. According to this characteristic, the communicating vessel base 20 only needs to contact the bottom surface of the porcelain plate or the water-permeable stone plate, and the porcelain plate or the water-permeable stone plate can supply water to the soil sample. If the water-permeable plate 22 is a metal porous plate or an organic glass plate, the metal porous plate or the organic glass plate does not absorb water at all, which requires high accuracy for the regulation of the liquid level position, and is not easy to ensure the stability and reliability of the soil sample cracking test results.

[0040] In the embodiment, the bottom of the communicating vessel base 20 is provided with the sewage outlet 29, which is selectively opened or closed to discharge the water flow in the communicating vessel base 20. Specifically, during the soil sample cracking test, the sewage outlet 29 is closed; after the soil sample cracking test, the sewage outlet 29 is opened to discharge the water flow in the communicating vessel base 20.

[0041] In the embodiment, the upper portion of the communicating vessel base 20 is provided with the ring knife sheath 23, which encloses a space for placing the soil sample, so as to protect the edge of the soil sample and reduce the influence of environmental fluctuations.

[0042] In the embodiment, the soil sample cracking testing device further comprises a computer, and the industrial camera 13, the electronic balance 19, the on-off electromagnetic valve 24 and the water supply device are electrically connected with the computer and work under the control of the computer.

[0043] Further, the water supply device of the embodiment comprises the water bucket 15, the stainless steel capillary steel pipe 25 arranged in the vertical direction and the transparent pipe 26.

[0044] The water outlet end of the water bucket 15 is communicated with the water inlet end of the on-off electromagnetic valve 24, the water outlet end of the on-off electromagnetic valve 24 is communicated with one end of the stainless steel capillary tube 25, the other end of the stainless steel capillary tube 25 is communicated with one end of the transparent tube 26, the other end of the transparent tube 26 is communicated with the bottom of the communicating vessel base 20, and the outer side wall of the transparent tube 26 is provided with the non-contact liquid level meter 27, which is arranged at the same height position as the water permeable plate 22.

[0045] Further, an O-ring is arranged at the connection between the bottom of the communicating vessel base 20 and the transparent tube 26, which is used to seal the gap between the transparent tube 26 and the communicating vessel base 20 and prevent water leakage.

[0046] The working principle of the water replenishing device in the embodiment is as follows: the transparent tube 26 and the communicating vessel base 20 arranged in the vertical direction form a U-shaped tube, and the water flowing out of the stainless steel capillary tube 25 enters the transparent tube 26 and the communicating vessel base 20, so that the liquid level in the transparent tube 26 is the same as that of the communicating vessel base 20; when the liquid level in the transparent tube 26 is lower than the predetermined liquid level, the computer controls the on-off electromagnetic valve 24 to open the pipeline, and the water bucket 15 supplies water into the communicating vessel base 20; when the liquid level in the transparent tube 26 reaches the predetermined liquid level, the non-contact liquid level meter 27 is triggered, the non-contact liquid level meter 27 sends the liquid level information to the computer, the computer controls the on-off electromagnetic valve 24 to close the pipeline, and the water replenishing is stopped. It should be noted that the transparent tube 26 is preferably a thin-walled acrylic tube. The non-contact liquid level meter 27 is a laser liquid level meter, which can emit laser into the transparent tube 26 and detect the position of the laser reflected on the liquid surface through an optical sensor, so as to determine the liquid level. The stainless steel capillary tube 25 has the advantages of slow and uniform water flow, thereby facilitating the control of the water replenishing amount by the on-off electromagnetic valve 24.

[0047] In the embodiment, the soil sample cracking test device further comprises an optical platform 1, an upper support 12, a cross beam 7 and two guide shafts 4. The optical platform 1 is arranged at the bottom of the internal space of the closed box body and below the electronic balance 19, two guide shafts 4 extending in the vertical direction are arranged on the left and right sides of the electronic balance 19, the lower ends of the two guide shafts 4 are fixedly arranged on the optical platform 1, the upper ends of the two guide shafts 4 are connected with the two ends of the upper support 12, the two ends of the cross beam 7 are provided with quick locking linear bearings 8 which are correspondingly sleeved on the periphery of the guide shafts 4, and an industrial camera 13, a water bucket 15 and an LED lamp 16 are installed on the cross beam 7. In the use process, the cross beam 7 can slide up and down along the two guide shafts 4 to adjust the height of the industrial camera 13, the water bucket 15 and the LED lamp 16, and the quick locking linear bearings 8 can be locked with the guide shafts 4 to keep the cross beam 7 at a predetermined height position.

[0048] Specifically, the lower end of each of the two guide shafts 4 is connected with a guide shaft support seat 3, and the guide shaft support seat 3 is fixed on the optical platform 1 through a support seat mounting plate 2.

[0049] Further, the water tank 15 is fixedly installed on the end of the crossbeam 7 through a water tank support 17, the on-off electromagnetic valve 24 is fixedly installed on the inner side wall of the sealed box body through an electromagnetic valve mounting seat 18, and the LED lamp 16 is fixedly installed on the middle part of the crossbeam 7 through a lamp support 14 and is located directly above the sample base.

[0050] Further, the crossbeam 7 is provided with a dovetail guide rail 9 extending along the length direction of the crossbeam 7, the hand-adjusting sliding block 10 is slidingly arranged on the dovetail guide rail 9, and the industrial camera 13 is installed on the hand-adjusting sliding block 10 through a camera support 11. The hand-adjusting sliding block 10 and the dovetail guide rail 9 are arranged to adjust the horizontal position of the industrial camera 13.

[0051] Further, the temperature and humidity sensor mounting plate 5 is connected with the guide shaft 4 at one end, and the temperature and humidity sensor 6 is installed on the other end of the temperature and humidity sensor mounting plate 5 and is located above the sample base, so as to detect the temperature and humidity of the experimental environment.

[0052] Embodiment 2:

[0053] Referring to Figure 3 , the embodiment provides another soil sample cracking test device. On the basis of the embodiment 1, the sealed box body includes a front door frame 32 and a shell main body 33, the front side of the shell main body 33 is provided with an opening, the outer side edge of the front door frame 32 is hinged to the opening of the shell main body 33, and the inner side of the front door frame 32 is provided with a semi-transparent tea-colored acrylic plate 31. It should be noted that the soil sample cracking test needs to be continued for 3-4 days, and the change of light (sunrise and sunset) has a great influence on the feature point recognition of the industrial camera 13 during the test. The semi-transparent tea-colored acrylic plate 31 can block light to isolate the influence of external light on the photographing of the industrial camera 13, and meanwhile, the operator can observe the light emission of the LED lamp 16 in the sealed box body through the semi-transparent tea-colored acrylic plate 31, which can remind the operator that the test is running.

[0054] Further, the shell main body 33 is an aluminum profile shell, and the front door frame 32 is further provided with a front door handle 30 for the operator to grab, so as to quickly open or close the shell main body 33.

[0055] Further, the shell main body 33 is further provided with a digital temperature controller 34, a power supply master switch 35 and a light switch 37, the power supply master switch 35 is electrically connected with a computer, the digital temperature controller 34 is electrically connected with a temperature and humidity sensor to display the temperature and humidity of the experimental environment, and the light switch 37 is electrically connected with the LED lamp 16.

[0056] Further, the shell body 33 is provided with a ventilation hole, a heating assembly and a fan are arranged in the ventilation hole, and a temperature control switch 36 is arranged on the front side of the shell body 33 and electrically connected with the heating assembly and the fan, so as to adjust the temperature in the shell body 33. Specifically, when the temperature in the shell body 33 needs to be increased, the temperature control switch 36 controls the heating assembly and the fan to work, and hot air is blown into the shell body 33; when the temperature in the shell body 33 needs to be reduced, the temperature control switch 36 controls the fan to work, and air is blown into the shell body 33 to accelerate heat dissipation.

[0057] The remaining parts are the same as those in Embodiment 1, which will not be repeated here.

[0058] The soil sample cracking test device of the embodiment adopts a split modular design, ensuring flexible structure and easy expansion. The sealed box body adopts a light blocking design, is equipped with an LED lamp 16 inside to ensure the brightness in the device, avoid sunlight and indoor light interference, and has a transparent shell and good sealing performance. The water replenishment device adjusts the water level of the test sample base through an on-off electromagnetic valve 24 and a non-contact liquid level meter 27, ensures stable experimental conditions, and the non-contact liquid level meter 27 can monitor the water level change in real time and automatically adjust the water replenishment device. Through a high-precision temperature and humidity sensor 6 and a heating assembly, dynamic adjustment of the experimental environment is realized. The soil sample cracking test device uses a high-precision electronic balance 19 to collect soil sample mass change data and an industrial camera 13 to take real-time photos of the test sample surface form. A computer collects temperature and humidity sensor 6, electronic balance 19 and industrial camera 13 data in real time, automatically stores and analyzes soil sample dynamic changes, and generates visual results. The test sample base adopts a replaceable design of a permeable stone plate and a pottery plate, facilitating adjustment under different experimental conditions.

[0059] In the description of the present application, it should be understood that the terms "first", "second" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0060] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0061] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact through an intermediate medium. Moreover, the first feature is "above", "over" and "on" the second feature, which can be directly above or obliquely above the first feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature is "below", "under" and "under" the second feature, which can be directly below or obliquely below the first feature, or only indicates that the horizontal height of the first feature is lower than that of the second feature.

[0062] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "embodiments", "examples", "specific examples" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are contained in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or features of different embodiments or examples described in the present application without contradiction.

[0063] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. Those skilled in the art can modify, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A soil sample cracking testing device, characterized in that: Includes a sealed chamber, a sample base set inside the sealed chamber, an LED light (16), an industrial camera (13), an electronic balance (19), an upper bracket (12), a crossbeam (7), two guide shafts (4), and a water replenishment device; An electronic balance (19) is set at the bottom of the interior space of the sealed box. A sample base is set on the upper part of the electronic balance (19). An industrial camera (13) and an LED light (16) are set above the sample base. The industrial camera (13) and the LED light (16) shine on the sample base. The sample base includes a communicating vessel base (20) and a permeable plate (22). The permeable plate (22) is provided on the upper part of the communicating vessel base (20), and the upper surface of the permeable plate (22) is used to place the soil sample. The water supply device includes a water tank (15), a stainless steel capillary tube (25) arranged vertically, and a transparent tube (26). The outlet of the water tank (15) is connected to the inlet of the on / off solenoid valve (24). The outlet of the on / off solenoid valve (24) is connected to one end of the stainless steel capillary tube (25). The other end of the stainless steel capillary tube (25) is connected to one end of the transparent tube (26). The other end of the transparent tube (26) is connected to the bottom of the communicating vessel base (20). A non-contact level gauge (27) is installed on the outer wall of the transparent tube (26). The non-contact level gauge (27) and the permeable plate (22) are installed at the same height. The sealed box is equipped with two guide shafts (4) extending vertically. The upper ends of the two guide shafts (4) are connected to the two ends of the upper bracket (12) respectively. The two ends of the crossbeam (7) are connected to the middle of the two guide shafts (4) one by one. The end of the crossbeam (7) is also equipped with a water tank bracket (17). A water tank (15) is fixedly installed on the water tank bracket (17). A solenoid valve mounting seat (18) is fixedly installed on the inner side wall of the sealed box. A solenoid valve (24) and a stainless steel capillary tube (25) are installed on the solenoid valve mounting seat (18).

2. The soil sample cracking test device as described in claim 1, characterized in that: The permeable plate (22) is a clay plate or a permeable stone plate. An annular mounting groove (21) is provided on the inner side wall of the communicating vessel base (20). The four edges of the permeable plate (22) are set in the annular mounting groove (21).

3. The soil sample cracking test device as described in claim 2, characterized in that: The upper part of the base (20) of the communicating vessel is provided with a ring cutter sleeve (23), which encloses the space for placing the soil sample.

4. The soil sample cracking test device as described in claim 1, characterized in that: The transparent tube (26) is a thin-walled acrylic tube, and the non-contact level gauge (27) is a laser level gauge.

5. The soil sample cracking test device as described in claim 1, characterized in that: An O-ring is provided at the connection between the bottom of the communicating vessel base (20) and the transparent tube (26). The O-ring is used to seal the gap between the transparent tube (26) and the communicating vessel base (20).

6. The soil sample cracking testing device as described in claim 1, characterized in that: The soil sample cracking test device also includes an optical platform (1); The optical platform (1) is located at the bottom of the internal space of the sealed box and below the electronic balance (19). Two guide shafts (4) are set on the left and right sides of the electronic balance (19). The lower ends of the two guide shafts (4) are fixed on the optical platform (1). The two ends of the crossbeam (7) are equipped with quick-locking linear bearings (8). The quick-locking linear bearings (8) are fitted around the guide shafts (4) one by one. The industrial camera (13) and LED light (16) are installed on the crossbeam (7).

7. The soil sample cracking test device as described in claim 6, characterized in that: A dovetail guide rail (9) extending along the length of the crossbeam (7) is provided on the crossbeam (7), and a manual adjustment slider (10) is slidably provided on the dovetail guide rail (9). An industrial camera (13) is mounted on the manual adjustment slider (10) via a camera bracket (11).

8. The soil sample cracking test device as described in claim 6, characterized in that: It also includes a temperature and humidity sensor mounting plate (5) and a temperature and humidity sensor (6); One end of the temperature and humidity sensor mounting plate (5) is connected to the guide shaft (4), and the other end of the temperature and humidity sensor mounting plate (5) is equipped with a temperature and humidity sensor (6), which is located above the sample base.

9. The soil sample cracking testing device according to any one of claims 1-8, characterized in that: The sealed enclosure includes a front door frame (32) and an outer shell body (33); An opening is provided on the front side of the outer shell body (33), and the outer edge of the front door frame (32) is hinged to the opening of the outer shell body (33). A translucent brown acrylic sheet (31) is provided on the inner side of the front door frame (32).

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