Visualization device and method for measuring soil adhesion characteristics of textured soil contact components

Abstract

This invention discloses a visualization device and method for measuring the soil adhesion characteristics of textured soil-contact components. A drive shaft is horizontally mounted, with one end connected to a motor via a torque meter and the other end passing through a mud box for storing cohesive soil. The mud box has a detachable front baffle and a rear baffle at its axial ends. Both the front and rear baffles are sealed onto the drive shaft and slidably supported on a guide rod. An installation structure for detachably mounting textured samples is provided inside the mud box on the drive shaft. A force sensor is installed on the front baffle, and a pressurization component can apply an adjustable axial force to the front baffle via the force sensor. The area of ​​the rear baffle facing the textured sample is transparent. When a transparent textured sample is selected, a high-speed camera observes the texture adhesion characteristics directly through the transparent area of ​​the rear baffle. This invention can adjust the pressurization load and rotation speed, observe the adhesion pattern of cohesive soil during movement, obtain the magnitude of the adhesion force, and analyze the adhesion characteristics under different texture parameters.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of agricultural machinery, and particularly relates to a textured soil-contacting component soil adhesion characteristic visual measurement device and method. BACKGROUND

[0002] Soil adhesion is a common phenomenon in the field operation of agricultural machinery, which causes low mechanical operation efficiency and increases energy consumption, and seriously affects the use of agricultural machinery. Therefore, exploring the adhesion characteristics of textured soil-contacting components in clay soil has important guiding significance for reducing the adhesion between the soil-contacting components and clay soil and improving efficiency.

[0003] At present, there are few studies on the soil adhesion characteristics of textured soil-contacting components, and most of them focus on the measurement of soil adhesion force. The invention patent CN201910839569 discloses a test device and a measurement method for measuring the tangential adhesion force between soil and solid interface. A hydraulic jack is used to apply load to the soil thereon, and a servo motor is used to make the solid interface and the soil rotate relatively. The maximum torque in this process can reflect the tangential adhesion force. The invention patent CN202011566364 discloses a sampling device and a testing method for measuring the adhesion force between a special curved surface and soil interface. The special curved surface is in close contact with the soil. The glass cylinder is separated from the soil body by the tension applied by the tension meter, and the soil adhesion force is directly measured by pulling the glass cylinder. The above studies are direct measurements of adhesion force, and do not involve the explanation of the adhesion mechanism of the soil-contacting components and soil. It cannot fundamentally achieve adhesion reduction and adhesion. SUMMARY

[0004] The purpose of the present application is to provide a textured soil-contacting component soil adhesion characteristic visual measurement device and method. The present application can replace textured samples of different texture shapes and materials, can adjust the pressure load and rotation speed, can observe the adhesion rules of clay soil during movement, and can obtain the adhesion force and analyze the adhesion effect.

[0005] The technical solution adopted by the present application is:

[0006] A visualization device for measuring the soil adhesion characteristics of textured soil-contact components includes a drive shaft, a pressurizing assembly, a textured sample, and a high-speed camera. The drive shaft is horizontally mounted, with one end connected to a motor via a torque meter and the other end passing through a mud box for storing cohesive soil. The mud box has a detachable front baffle and a rear baffle at its axial ends. Both the front and rear baffles are sealed onto the drive shaft and slidably supported on a guide rod. The drive shaft and the mud box contain an installation structure for detachably mounting the textured sample. A force sensor is located on the front baffle, and the pressurizing assembly applies an adjustable axial force to the front baffle via the force sensor. The area of ​​the rear baffle facing the textured sample is transparent. The texture shape and material of the textured sample are selected according to the experimental requirements, including transparent and metallic materials. When a transparent textured sample is selected, the high-speed camera observes and analyzes the sample through the transparent area of ​​the rear baffle.

[0007] Furthermore, the mounting structure is a flange, and the textured sample is mounted on the flange by a pressure plate, with the flange bolts acting on the pressure plate.

[0008] Furthermore, the pressurization assembly includes a nut, a hollow stud, and a spring. The nut is supported and fixed by a nut support. The hollow stud fits inside the nut and is loosely fitted on the drive shaft. The spring is located inside the hollow stud and is fitted on the drive shaft. The two ends of the spring abut against the inner end face of the hollow stud and the front baffle, respectively.

[0009] Furthermore, the high-speed camera is mounted on an adjustable level platform, which in turn is mounted on a lifting platform.

[0010] Furthermore, both the front and rear baffles are sealed onto the drive shaft using sealing rings.

[0011] Furthermore, the motor is a servo motor.

[0012] Furthermore, the motor is connected to one end of the torque meter via a first coupling, and the other end of the torque meter is connected to the drive shaft via a second coupling. The torque meter is horizontally supported by a torque meter support.

[0013] Furthermore, the central area of ​​the rear baffle is a glass plate, and the edge area is a structural plate. The glass plate is installed in the annular groove of the structural plate, and the two are sealed by a sealing ring.

[0014] Furthermore, the texture shape distribution is uneven in different regions of the transparent textured sample, while the texture shape distribution is uniform in the metallic textured sample.

[0015] A method for visually measuring the soil adhesion characteristics of textured soil contact components is disclosed. This method utilizes the aforementioned visualization device for measuring the soil adhesion characteristics of textured soil contact components. Based on experimental requirements, parameters of the cohesive soil and the texture shape and material of the textured sample are selected. During the experiment, the selected textured sample is weighed and installed on the mounting structure. The selected cohesive soil is prepared and filled into a mud box. Then, a pressure assembly moves the mud box, causing the cohesive soil inside to compress the textured sample. The pressure assembly adjusts the pressure load, a force sensor measures the pressure load, and a motor adjusts the rotation speed. The transmission shaft drives the textured sample to rotate relative to the surface of the cohesive soil. The magnitude of the adhesion force is obtained using a torque meter. When a transparent textured sample is selected, a high-speed camera is positioned directly on the transparent sample through the transparent area of ​​the rear baffle. The adhesion pattern of the cohesive soil during the movement is observed and analyzed using the high-speed camera. Then, the motor is turned off, the pressure assembly is retracted, and the textured sample is removed. When a metal textured sample is selected, the adhesion effect is analyzed based on the mass and distribution of the cohesive soil remaining on its surface.

[0016] The beneficial effects of this invention are:

[0017] This invention allows for the replacement of textured samples with different texture shapes and materials, adjustment of pressure load and rotation speed, observation of the adhesion pattern of cohesive soil during movement, and acquisition of adhesion force magnitude and analysis of adhesion effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the visualization and measurement device for soil adhesion characteristics of textured soil contact components in an embodiment of the present invention.

[0019] Figure 2 This is an exploded view of the mud box position on the drive shaft in an embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of a transparent textured sample in an embodiment of the present invention.

[0021] Figure 4 This is a partial schematic diagram of a transparent textured sample in an embodiment of the present invention.

[0022] Figure 5 This is a schematic diagram of a textured metal sample in an embodiment of the present invention.

[0023] In the diagram: 1-Motor; 2-First coupling; 3-Torque meter; 4-Second coupling; 5-Drive shaft; 6-Hollow stud; 7-Nut; 8-Spring; 9-Front baffle; 10-Mud box; 11-Rear baffle; 12-Guide rod; 13-High-speed camera; 14-Adjustable level platform; 15-Lifting platform; 16-Guide rod support; 17-Nut support; 18-Base; 19-Bearing seat; 20-Torque meter support; 21-Motor bracket; 22-Force sensor; 23-Sealing ring; 24-Textured sample; 25-Pressure plate; 26-Flange bolt; 27-Mounting structure. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] like Figures 1 to 5 As shown, a visualization device for measuring the soil adhesion characteristics of textured soil-contact components includes a drive shaft 5, a pressurizing assembly, a textured sample 24, and a high-speed camera 13. The drive shaft 5 is horizontally mounted, with one end connected to a motor 1 via a torque meter 3, and the other end passing through a mud box 10 for storing cohesive soil. The mud box 10 has a detachable front baffle 9 and a rear baffle 11 at its two axial ends, respectively. Both the front baffle 9 and the rear baffle 11 are sealed on the drive shaft 5 and can be slidably supported on a guide rod 12 along the axial direction. The mud box 10 is mounted on the drive shaft 5. A mounting structure 27 is provided for detachably mounting the textured sample 24. A force sensor 22 is provided on the front baffle 9. The pressurizing component can apply an adjustable axial force to the front baffle 9 through the force sensor 22. The area of ​​the rear baffle 11 facing the textured sample 24 is transparent. The texture shape and material of the textured sample 24 are selected according to the test requirements, including transparent materials and metal materials. When a transparent textured sample 24 is selected, the high-speed camera 13 observes and analyzes the transparent textured sample 24 through the transparent area of ​​the rear baffle 11.

[0026] like Figure 1 As shown, in this embodiment, the pressurizing component includes a nut 7, a hollow stud 6, and a spring 8. The nut 8 is supported and fixed by a nut support 17. The hollow stud 6 fits inside the nut 7 and is loosely fitted onto the drive shaft 5. The spring 8 is located inside the hollow stud 6 and is fitted onto the drive shaft 5. The two ends of the spring 8 abut against the inner end face of the hollow stud 6 and the front baffle 9, respectively. The pressurizing load can be adjusted by adjusting the position of the hollow stud 6, resulting in a simple structure.

[0027] like Figure 1 As shown, in this embodiment, the high-speed camera 13 is mounted on the adjustable horizontal platform 14, and the adjustable horizontal platform 14 is mounted on the lifting platform 15; this ensures that the position and alignment direction of the high-speed camera 13 are accurate.

[0028] like Figure 1 As shown, in this embodiment, motor 1 is a servo motor, which has high adjustment accuracy.

[0029] like Figure 1 As shown, in this embodiment, the motor 1 is connected to one end of the torque meter 3 through the first coupling 2, and the other end of the torque meter 3 is connected to the drive shaft 5 through the second coupling 4. The torque meter 3 is horizontally supported by the torque meter support 20.

[0030] like Figure 1 As shown, in this embodiment, the motor 1, drive shaft 5, pressurizing assembly, and guide rod 12 are mounted on the raised base 18 for convenient manual testing. The motor 1 is mounted on the base 18 via the motor bracket 21, the drive shaft 5 is supported on the base 18 along its axis via the bearing seat 19, and the guide rod 12 is supported on the base 18 via the guide rod support 16.

[0031] like Figure 2 As shown, in this embodiment, both the front baffle 9 and the rear baffle 11 are sealed onto the drive shaft 5 by a sealing ring 23 to prevent the sticky soil from escaping.

[0032] like Figure 2 As shown, in this embodiment, the mounting structure 27 is a flange, and the textured sample 24 is mounted on the flange by the pressure plate 25. The flange bolts 26 act on the pressure plate 25. This arrangement avoids applying concentrated stress to the textured sample 24.

[0033] like Figures 3 to 5 As shown in this embodiment, the texture shape distribution in different regions of the transparent textured sample 24 is uneven, which makes it easier to analyze the adhesion pattern of the cohesive soil. The texture shape distribution in the metal textured sample 24 is uniform, which makes it easier to analyze the adhesion effect.

[0034] In this embodiment, the central area of ​​the rear baffle 11 is a glass plate and the edge area is a structural plate. The glass plate is installed in the annular groove of the structural plate and the two are sealed by a sealing ring. This structure is easy to manufacture and install and has low cost.

[0035] A method for visually determining the soil adhesion characteristics of textured soil contact components is disclosed. This method utilizes the aforementioned visualization device for determining the soil adhesion characteristics of textured soil contact components. Based on experimental requirements, the parameters of the cohesive soil and the texture shape and material of the textured sample 24 are selected. During the experiment, the selected textured sample 24 is first weighed and installed on the mounting structure 27. The selected cohesive soil is prepared and filled into the mud box 10. Then, the pressurizing component moves the mud box 10, causing the cohesive soil inside to compress the textured sample 24. The pressurizing component adjusts the pressurizing load, and the force sensor 22 measures the pressurizing load. The rotation speed is adjusted by motor 1, and the transmission shaft 5 drives the textured sample 24 to rotate relative to the surface of the cohesive soil. The magnitude of the adhesion force is obtained by torque meter 3. When a transparent textured sample 24 is selected, the high-speed camera 13 is directed at the transparent textured sample 24 through the transparent area of ​​the rear baffle 11. The adhesion pattern of the cohesive soil during the movement is observed and analyzed by the high-speed camera 13. Then, motor 1 is turned off, the pressurizing component is returned, and the textured sample 24 is removed. When a metal textured sample 24 is selected, the adhesion effect is analyzed based on the mass and distribution of the cohesive soil left on its surface.

[0036] This invention allows for the replacement of textured samples 24 with different texture shapes and materials, adjustment of pressure load and rotation speed, observation of the adhesion law of cohesive soil during movement, and acquisition of adhesion force magnitude and analysis of adhesion effect.

[0037] It should be understood that 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 device for visually measuring the soil adhesion characteristics of textured soil-contact components, characterized in that: The transmission shaft is horizontally installed and one end is connected with the motor through the torque instrument and the other end passes through the mud box for storing the cohesive soil, the mud box has detachable front and rear baffles at the axial two ends, the front and rear baffles are sealingly sleeved on the transmission shaft and are axially slidably supported on the guide rod, the installation structure for detachably installing the textured sample is arranged in the mud box on the transmission shaft, the force sensor is arranged on the front baffle, the pressurizing assembly can apply an adjustable axial force to the front baffle through the force sensor, and the region of the rear baffle opposite to the textured sample is transparent; the texture shape and material of the textured sample are selected according to the test requirements, including transparent material and metal material, when the transparent textured sample is selected, the high-speed camera is arranged opposite to the transparent textured sample through the transparent region of the rear baffle for observation and analysis; The pressurizing assembly comprises a nut, a hollow stud and a spring, the nut is supported and fixed by the nut support, the hollow stud is fitted in the nut and is sleeved on the transmission shaft, and the spring is located in the hollow stud and is sleeved on the transmission shaft, and the two ends of the spring are respectively abutted against the inner end face of the hollow stud and the front baffle; The texture shape of different regions of the transparent textured sample is unevenly distributed, and the texture shape of the metal textured sample is uniformly distributed.

2. The textured in-ground component soil adhesion property visualization apparatus of claim 1, wherein: The installation structure is a flange, and the textured sample is installed on the flange through the pressing plate.

3. The textured in-ground component soil adhesion property visualization apparatus of claim 1, wherein: The high-speed camera is installed on the adjustable horizontal platform, and the adjustable horizontal platform is installed on the lifting platform.

4. The textured touchpoint component soil adhesion property visualization apparatus of claim 1, wherein: The front and rear baffles are sealingly sleeved on the transmission shaft through the sealing rings.

5. The textured touch part soil adhesion property visualization apparatus of claim 1, wherein: The motor is a servo motor.

6. The textured touch part soil adhesion property visualization apparatus of claim 1, wherein: The motor is connected with one end of the torque instrument through the first coupling, the other end of the torque instrument is connected with the transmission shaft through the second coupling, and the torque instrument is horizontally supported through the torque instrument support.

7. The textured touch part soil adhesion property visualization apparatus of claim 1, wherein: The central region of the rear baffle is a glass plate, and the edge region is a structure plate, the glass plate is installed in the ring groove of the structure plate and is sealed through the sealing ring.

8. A method of visualizing soil adhesion properties of a textured soil-engaging component, comprising: The device for visualizing and measuring the soil adhesion characteristics of the textured soil part is used, the parameters of the cohesive soil and the texture shape and material of the textured sample are selected according to the test requirements; in the test process, the selected textured sample is weighed and installed on the installation structure, the selected cohesive soil is prepared and filled in the mud box, then the pressurizing assembly drives the mud box to move to make the internal cohesive soil extrude the textured sample, the pressurizing load is adjusted by the pressurizing assembly, the force sensor measures the pressurizing load, then the rotating speed is adjusted by the motor, the textured sample is relatively rotated on the surface of the cohesive soil by the transmission shaft, the adhesion force is obtained by the torque instrument, when the transparent textured sample is selected, the high-speed camera is arranged opposite to the transparent textured sample through the transparent region of the rear baffle, the high-speed camera is used to observe and analyze the adhesion law of the cohesive soil in the movement process, then the motor is turned off, the pressurizing assembly is retreated, the textured sample is dismounted, when the metal textured sample is selected, the adhesion effect is analyzed according to the mass and distribution position of the cohesive soil remaining on the surface of the metal textured sample.

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