An intelligent fully automatic crushing and screening test device and method

Abstract

The present invention discloses an intelligent, fully automatic crushing and screening test device and method, which belongs to the technical field of soil crushing and screening. It mainly addresses the problem that the existing soil crushing and screening methods not only have high labor costs but also affect the accuracy of the test, and proposes the following technical solutions, including a shell, and a feeding hopper arranged on the top of the shell, wherein the interior of the shell is provided with a crushing device located directly below the feeding hopper, the crushing device is used for crushing the soil, and a heterogeneous self-connecting screen for screening the soil is provided directly below the crushing device, and a collecting bin for collecting the soil is provided below the heterogeneous self-connecting screen, and pillars are symmetrically provided on the top front side of the collecting bin. The present invention reduces the labor intensity of the test personnel by replacing manual soil crushing with a crushing device, and can connect the heterogeneous self-connecting screen through a vibrating screen motor to achieve uniform and reliable screening of the soil, thereby ensuring the accuracy of the test results. Finally, it has the function of fully automatic operation, can complete the operation of the screening test, and improve the accuracy and stability of the test.

Description

Technical Field

[0001] The present invention relates to the technical field of soil crushing and screening, and in particular to an intelligent full-automatic crushing and screening test device and method. Background Art

[0002] Screening tests are one of the most fundamental and important methods in soil mechanics. Their primary purpose is to determine the particle composition and gradation of soil, providing fundamental data for soil classification and engineering design. However, traditional screening tests have several drawbacks: cumbersome and error-prone procedures; high manual labor intensity and fatigue; and inaccurate test results.

[0003] Traditional testing requires testers to manually crush undisturbed soil or recovered soil samples in advance, making it difficult to ensure consistent crushing results. This generates significant dust, which severely impacts tester health and the laboratory environment. Furthermore, manual operation requires testers to hold a sieve for extended periods to ensure uniform sieving, significantly increasing workload. Furthermore, due to differences in tester skill, varying sieving times or readings under identical test conditions can result in varying results.

[0004] Therefore, these issues limit the accuracy and reliability of traditional screening test results. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides an intelligent fully automatic crushing and screening test device and method, which reduces the labor intensity of test personnel by using a crushing device instead of manual crushing of the soil, and can connect heterogeneous self-connecting screens through a vibrating screen motor to achieve uniform and reliable screening of the soil, thereby ensuring the accuracy of the test results. Finally, it has the function of fully automatic operation, can complete the operation of the screening test, and improve the accuracy and stability of the test, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The technical solution of the first aspect: an intelligent fully automatic crushing and screening test device, comprising a shell and a feeding hopper arranged on the top of the shell, a crushing device located directly below the feeding hopper is provided inside the shell, the crushing device is used for crushing soil, and a collecting bin for collecting soil is provided directly below the crushing device, pillars are symmetrically provided on the left and right front sides of the top of the collecting bin, and a plurality of guide rail groups located on two of the pillars are distributed longitudinally linearly between the collecting bin and the crushing device, each guide rail group is movably connected with a heterogeneous self-connecting screen for screening soil, and a vibrating screen motor group for driving the heterogeneous self-connecting screen is also installed on the top of the guide rail group, a screen changer group is provided above the vibrating screen motor group, a load sensor group located on the inner wall of the shell is provided below the collecting bin, and a load sensor group for load monitoring is also installed below each guide rail group, a central controller located on the shell is installed on the left side of the crushing device, and the central controller and the plurality of load sensor groups are connected through sensor connecting lines.

[0008] As a further solution of the present invention, a feed port is provided on the top wall of the shell, and the feeding hopper is installed in the feed port, and the feeding hopper is used for feeding soil;

[0009] A notch is provided on the right side wall of the shell body, and the notch is used to facilitate the drawing and pulling of the material receiving bin.

[0010] As a further solution of the present invention, the crushing device is composed of a loading frame, a crushing assembly and an adjustment assembly, wherein the loading frame is arranged inside the shell and located at the top of the support, and through grooves are formed on the left and right side walls of the loading frame;

[0011] The crushing assembly is composed of a turbine cutter roller and a rotary motor, wherein the turbine cutter roller and the rotary motor each include two, the two turbine cutter rollers are symmetrically arranged inside the loading frame, and the right end of the turbine cutter roller passes through the corresponding through slot, and the two rotary motors are respectively installed at the left end of the corresponding turbine cutter roller, and the end of the rotary motor away from the turbine cutter roller also passes through the corresponding through slot;

[0012] The adjustment assembly includes two, respectively arranged on the left and right outer sides of the loading frame, and the adjustment assembly consists of a bidirectional screw, a drive motor, a guide rod and a carrier plate, wherein the bidirectional screw and the guide rod are symmetrically arranged on the upper and lower sides of the through slot, and supports are installed on the bidirectional screw and the guide rod, and the supports are fixedly connected to the corresponding side walls of the loading frame. The drive motor is installed at the front end of the bidirectional screw and is fixedly connected to the corresponding support. The carrier plate includes two, which are symmetrically sleeved on the bidirectional screw and the guide rod in a front-to-back manner;

[0013] The right ends of the plurality of turbine blade rollers are movably connected to the corresponding carrier plates through bearings, and the left ends of the plurality of rotary motors are also respectively arranged on the corresponding carrier plates.

[0014] As a further solution of the present invention, the guide rail group includes two guide rails, wherein the guide rail is composed of an L-shaped track and a limiter, the front end of the L-shaped track is set on the pillar, and a rectangular slide groove is opened on the top shell wall of the L-shaped track, and the limiter includes a plurality of uniformly distributed on the L-shaped track, and the limiter is used to constrain the position of the displacement adjustment of the heterogeneous self-connecting screen;

[0015] The load sensor group consists of two load sensors, which are respectively arranged at the bottom of the corresponding L-shaped track. The load sensors are used to monitor the load of the heterogeneous self-connecting screen.

[0016] As a further solution of the present invention, the heterogeneous self-connecting screen is composed of a screen frame, a screen body, a special-shaped groove and a spring damping member, wherein the screen frame is located above the same group of L-shaped tracks, and the bottom of the screen frame is slidably connected to the rectangular slide groove of the L-shaped track through a slider, the screen body is installed in the middle of the screen frame, the special-shaped groove includes two, both are arranged on the front shell wall of the screen frame, and the two special-shaped grooves are arranged symmetrically on the left and right, and the spring damping member also includes two, respectively arranged in the corresponding special-shaped grooves.

[0017] As a further solution of the present invention, a groove is provided on the inner wall of the side of each of the special-shaped grooves, and the spring damping member includes a damping block movably connected to the groove, and the damping block is connected to the inner wall of the groove by an extrusion spring.

[0018] As a further solution of the present invention, the vibrating screen motor group is composed of two vibrating screen motors, and a straight plate is fixedly connected to the top side wall of each L-shaped track, and the vibrating screen motor is installed on the straight plate.

[0019] As a further solution of the present invention, the screen changer group is composed of two screen changers, wherein the screen changer is located directly above the vibrating screen motor, and an opening is provided on the back shell wall of the shell. Multiple screen changers are arranged on the corresponding inner walls of the opening, and a vibrating screen steel wire is passed through the screen changer. One end of the vibrating screen steel wire is bound to the output end of the corresponding vibrating screen motor, and the other end passes through the corresponding rectangular chute and is bound to the corresponding heterogeneous self-connecting screen.

[0020] The second technical solution is a method for using an intelligent fully automatic crushing and screening test device, which includes the following steps:

[0021] Step 1: Preparation: Place the device stably on the test bench, confirm the connection status of each port of the equipment, pay special attention to the connection of the power supply and control system, check whether the vibration screen motor and crushing device are functioning normally, ensure that the heterogeneous self-connecting screen is installed correctly and without damage, and the connection between the screen changer and the heterogeneous self-connecting screen. Ensure that the stretching and vibration of the heterogeneous self-connecting screen are in line with expectations, and that the screen changer can normally separate the screen body and the vibration screen wire. Prepare the soil sample to be crushed and screened, and ensure that its volume is smaller than the feed hopper;

[0022] Step 2: Crushing the soil sample. The distance between the two turbine cutter rollers in the crushing device is set through the human-machine interactive platform of the central controller to ensure crushing efficiency and safety. Then the soil sample is put into the interior of the shell through the feeding hopper and enters the crushing device. As the crushing device runs, the soil sample begins to be rectangularly crushed. The speed of the rotating motor in the crushing device is adjusted through the human-machine interactive platform of the central controller to adapt to soil samples of different hardness and ensure their thorough crushing.

[0023] Step 3: Vibration screening. Each vibrating screen motor is started through the human-machine interaction platform of the central controller. During operation, the vibrating screen motor stretches the vibrating screen steel wire to make the heterogeneous self-connected screen vibrate rapidly back and forth, thereby screening the crushed soil sample. To ensure that soil samples of different particle sizes pass through the screening smoothly, the frequency and amplitude of the vibrating screen motor and the screen body of different meshes in the heterogeneous self-connected screen are adjusted according to the characteristics of the soil sample;

[0024] Step 4: Load monitoring. Each load sensor in the load sensor group is activated at the start of the vibrating screen to monitor the quality of the soil samples on each layer of the heterogeneous self-connecting screen and the receiving bin. The load sensor group on each layer of the guide rail is used to ensure the accurate measurement of the quality of soil samples of different particle sizes on the corresponding heterogeneous self-connecting screen. The data monitored by each load sensor group is transmitted to the central controller through the sensor connection line for data analysis. The display screen of the human-computer interaction platform in the central controller will display real-time data for the operator to monitor the experimental process.

[0025] Step 5: Clean the soil sample. After the crushing and screening is completed, turn off the vibrating screen motor and other related equipment, open the receiving bin, remove the receiving bin from the shell, and empty the crushed and screened soil sample.

[0026] Step 6. Clean the equipment. After the crushing and screening test, you need to turn off the power of the equipment to ensure safety. Then clean the heterogeneous self-connecting screen, crushing device and other parts that come into contact with the soil sample to ensure that there are no impurities remaining in the equipment. Check the integrity of each component of the equipment to ensure that the equipment is in the best condition for the next test.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] By utilizing a motor and multiple vibrating screen motors to control the rotation of the turbine cutter rollers and the vibration of the heterogeneous, self-connecting screens in the crushing unit, this device achieves fully automated operation, boasting a high degree of automation. Compared to traditional screening tests that rely on manual crushing and sieving, this device significantly reduces the labor intensity of testers while improving test accuracy. Its modular and easy-to-maintain design facilitates widespread adoption and application, and is simple to control and maintain.

[0029] By installing a crushing device, the motor drives the turbine cutter rollers to rotate, and the spacing and speed between the two turbine cutter rollers can be adjusted. This prevents large particles from being crushed while achieving a multi-stage, fully cyclic crushing effect. This design replaces traditional manual crushing methods, improves crushing efficiency, ensures uniformity and consistency of the crushing process, and greatly enhances the accuracy of screening tests.

[0030] This invention utilizes a vibrating screen motor and heterogeneous self-jointing screens to control their vibration. Combined with the design of the heterogeneous self-jointing screens, this design achieves efficient and uniform screening. The number of screens and the vibration mechanism can be adjusted to suit different soil sample characteristics and actual needs to optimize screening efficiency and accuracy.

[0031] The design of the screen changer enables operators to quickly replace different levels of screens and perform cleaning and maintenance, thus keeping the equipment running for a long time.

[0032] The present invention designs a central controller and a multi-layer load sensor group. By installing the load sensor group below each layer of heterogeneous self-connected screens, the quality of soil samples of different particle sizes can be monitored in real time, thereby providing accurate data to support soil gradation analysis and research on other physical and mechanical properties of soil. The central controller provides a complete data processing and user interaction platform that can monitor and adjust test parameters in real time to ensure precise control of the test. The controller is also responsible for data collection, analysis, and report generation, improving the level of automation in data processing. At the same time, the results of each test are uploaded to the cloud and a large database of soil particle size gradation is established for use in scientific research and engineering practice. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of the three-dimensional structure of an intelligent fully automatic crushing and screening test device Figure 1 ;

[0034] Figure 2 A schematic diagram of the three-dimensional structure of an intelligent fully automatic crushing and screening test device Figure 2 ;

[0035] Figure 3 for Figure 1 Schematic diagram of the internal structure of the shell;

[0036] Figure 4 for Figure 2 Schematic diagram of the internal structure of the shell;

[0037] Figure 5 for Figure 3 A schematic diagram of the structure of the crushing device viewed from above;

[0038] Figure 6 for Figure 3 Schematic diagram of the structure of heterogeneous self-connecting screen and receiving bin;

[0039] Figure 7 for Figure 6 A magnified schematic diagram of the local structure at point A;

[0040] Figure 8 for Figure 3 Schematic diagram of the guide rail group and vibrating screen motor group;

[0041] Figure 9 for Figure 8 Schematic diagram of the vibrating screen motor and screen changer structure;

[0042] Figure 10 This is an example diagram of the cumulative curve of soil particle size gradation.

[0043] In the figure: 1. Shell; 2. Feed hopper; 3. Central controller; 4. Crushing device; 41. Loading frame; 42. Bidirectional screw; 43. Drive motor; 44. Guide rod; 45. Carrier plate; 46. Turbine cutter roller; 47. Rotating motor; 5. Pillar; 6. Load sensor group; 7. Heterogeneous self-connecting screen; 71. Screen frame; 72. Screen body; 73. Special-shaped groove; 74. Spring damping part; 741. Damping block: 742. Extrusion spring; 8. Receiving bin; 9. Guide rail; 91. L-shaped track; 92. Limiter; 10. Vibrating screen motor; 11. Screen changer; 12. Sensor connecting line. DETAILED DESCRIPTION

[0044] See also Figure 1-Figure 2 In an embodiment of the present invention, an intelligent fully automatic crushing and screening test device includes a shell 1 and a feeding hopper 2 arranged on the top of the shell 1. A feeding port is provided on the top shell wall of the shell 1, and the feeding hopper 2 is installed in the feeding port. The feeding hopper 2 is used for feeding soil. The setting of the feeding hopper 2 is used to facilitate the entry of the original soil or the test recovered soil sample into the interior of the shell 1 through the feeding port. A notch is provided on the right shell wall of the shell 1, and the notch is used to facilitate the drawing and pulling of the collecting bin 8. A handle is provided on the side wall of the collecting bin 8 to facilitate the staff to extract and place.

[0045] See also Figure 3-Figure 4In this embodiment of the present invention, a crushing device 4 is located within the housing 1, directly below the hopper 2. This crushing device 4 is used to crush the soil. A receiving bin 8 for collecting the soil is located directly below the crushing device 4. Support pillars 5 are symmetrically arranged on the top front side of the receiving bin 8. The placement of the receiving bin 8 below the crushing device 4 allows for the collection and processing of the crushed soil.

[0046] Multiple guide rail assemblies, located on two pillars 5, are linearly distributed longitudinally between the receiving bin 8 and the crushing device 4. Each guide rail assembly is movably connected to a self-jointed, heterogeneous screen 7 for screening the soil. The number of self-joined screens 7 can be adjusted based on the screening requirements of the crushed soil sample, ranging from three to seven. In this embodiment, five are used.

[0047] A vibrating screen motor group for driving the heterogeneous self-connecting screen 7 is also installed on the top of the guide rail group, and a screen changer group is provided above the vibrating screen motor group.

[0048] A load sensor group 6 is provided on the inner wall of the housing 1 below the receiving bin 8, and a load sensor group 6 for load monitoring is also installed below each guide rail group. The load sensor group 6 is provided to monitor the load on the receiving bin 8 and each heterogeneous self-connecting screen 7.

[0049] A central controller 3, located on the housing 1, is mounted on the left side of the crushing device 4. The central controller 3 is connected to the multiple load sensor groups 6 via sensor cables 12. The central controller 3 primarily consists of a processor, memory, and a human-computer interaction platform. The processor and memory are responsible for operating the device and collecting, storing, and processing sensor data. The human-computer interaction platform allows the operator to interact with the machine and change test conditions and parameters as needed.

[0050] The central controller 3 is responsible for coordinating the entire system. Its core function is to ensure that the system operates according to established procedures and efficiency. The processor organizes and stores each screening result, thereby establishing a large database of soil particle size distribution. Furthermore, the database data is uploaded to the cloud via Wi-Fi, making it easy to view and use on mobile devices such as laptops.

[0051] See also Figure 3-Figure 5 In this embodiment of the present invention, the crushing device 4 is composed of a loading frame 41, a crushing assembly, and an adjustment assembly. The loading frame 41 is disposed within the housing 1 and is located at the top of the support 5. Through slots are formed on the left and right side walls of the loading frame 41.

[0052] The crushing assembly consists of a turbine cutter roller 46 and a rotary motor 47. Two turbine cutter rollers 46 and two rotary motors 47 are provided. The two turbine cutter rollers 46 are symmetrically positioned front-to-back within the loading frame 41, with the right ends of the turbine cutter rollers 46 extending through corresponding slots. Two rotary motors 47 are mounted on the left ends of their respective turbine cutter rollers 46, with the ends of the rotary motors 47 facing away from the turbine cutter rollers 46 also extending through corresponding slots.

[0053] There are two adjustment assemblies, one on each side of the loading frame 41. These assemblies consist of a bidirectional screw 42, a drive motor 43, a guide rod 44, and a carrier plate 45. The two-way screw 42 and guide rod 44 are symmetrically positioned above and below the through slot. Each screw 42 and guide rod 44 is mounted with a support fixed to the corresponding side wall of the loading frame 41.

[0054] The drive motor 43 is mounted at the front end of the bidirectional screw 42 and fixedly connected to the corresponding support. Two carrier plates 45 are symmetrically mounted on the bidirectional screw 42 and the guide rod 44. When the drive motor 43 rotates the bidirectional screw 42, the carrier plates 45, which are threaded onto the bidirectional screw 42, move linearly with the assistance of the guide rod 44, thereby adjusting the spacing between the two turbine cutter rollers 46.

[0055] The right ends of the turbine cutter rollers 46 are movably connected to corresponding carrier plates 45 via bearings. The left ends of the multiple rotary motors 47 are also mounted on corresponding carrier plates 45. By adjusting the spacing between the two turbine cutter rollers 46, the spacing between the blades on each turbine cutter roller 46 is reduced, thereby reducing the angle formed by the soil material and the blades on both sides. This results in more thorough soil crushing during the crushing stage and improves the accuracy of soil sample analysis results.

[0056] See also Figure 3 、 Figure 4 and Figure 8 In an embodiment of the present invention, the guide rail group includes two guide rails 9. The guide rail 9 is composed of an L-shaped rail 91 and a limiter 92. The front end of the L-shaped rail 91 is set on the pillar 5, thereby further ensuring the stability of the assembly of the L-shaped rail 91. A rectangular slide groove is provided on the top shell wall of the L-shaped rail 91. The limiter 92 includes a plurality of limiters evenly distributed on the L-shaped rail 91, and the limiter 92 is used to constrain the position of the displacement adjustment of the heterogeneous self-connecting screen 7.

[0057] The load sensor group 6 consists of two load sensors, each mounted at the bottom of a corresponding L-shaped track 91. These load sensors monitor the load on the heterogeneous self-jointed screen 7. The sensors sense load signals through internal resistance strain gauges and convert them into electrical output signals, which are used to monitor the quality of the soil sample on the heterogeneous self-jointed screen 7. After obtaining the soil sample quality, the corresponding sensors connect to the signal processing core unit and upload the data to the central controller 3, where the soil sample stratification quality data is centrally analyzed and processed.

[0058] See also Figure 3 、 Figure 4 、 Figure 6 and Figure 7 In an embodiment of the present invention, the heterogeneous self-connecting screen 7 is composed of a screen frame 71, a screen body 72, a special-shaped groove 73 and a spring damping member 74. Among them, the screen frame 71 is located above the same group of L-shaped tracks 91, and the bottom of the screen frame 71 is slidably connected to the rectangular slide groove of the L-shaped track 91 through a slider. The screen frame 71 can achieve smooth movement and adjustment under the sliding load on the two guide rails 9. The slider is made of various materials, and in this embodiment, it is made of rubber material. The heterogeneous self-connecting screen 7 is a flexible screen, which can move along the L-shaped track 91 and can bend.

[0059] The screen body 72 is mounted in the middle of the screen frame 71. Two special-shaped slots 73 are provided on the front wall of the screen frame 71, and the two special-shaped slots 73 are symmetrically arranged. Two spring dampers 74 are also provided, one in each special-shaped slot 73.

[0060] A groove is formed on the inner wall of the side of each special-shaped slot 73 . The spring damping member 74 includes a damping block 741 movably connected to the groove. The damping block 741 is connected to the inner wall of the groove via a compression spring 742 .

[0061] See also Figure 2 、 Figure 3 、 Figure 4 、 Figure 8 and Figure 9 In the embodiment of the present invention, the vibrating screen motor group is composed of two vibrating screen motors 10. A straight plate is fixedly connected to the top side wall of each L-shaped track 91, and the vibrating screen motor 10 is installed on the straight plate.

[0062] The screen changer group consists of two screen changers 11. The screen changers 11 are located directly above the vibrating screen motor 10. An opening is provided on the back wall of the housing 1. Multiple screen changers 11 are movably connected to the corresponding inner walls of the opening via pins. A return spring is also provided between the screen changers 11 and the inner wall of the opening of the housing 1. A vibrating screen wire runs through the screen changers 11. One end of the wire is tied to the output of the corresponding vibrating screen motor 10, and the other end passes through the corresponding rectangular chute and is tied to the corresponding heterogeneous self-connecting screen 7.

[0063] The vibrating screen motor 10 and the vibrating screen wires cause the heterogeneous self-joined screen 7 to move along the guide rails 9. Due to the spring damper 74 in the heterogeneous self-joined screen 7, the damping block 741 in the spring damper 74 contacts the support 5 during movement, stretching the extrusion spring 742. When the vibrating screen motor 10 is not in operation, the resilient force of the extrusion spring 742 causes the heterogeneous self-joined screen 7 to return to its initial position.

[0064] When the screen needs to be changed, the vibrating screen motor 10 continues to work, so that the spring damping member 74 in the heterogeneous self-joined screen 7 is away from the support 5, and the support 5 no longer constrains the heterogeneous self-joined screen 7, and the heterogeneous self-joined screen 7 moves along the guide rail 9. The limiter 92 on the guide rail 9 is used to limit the heterogeneous self-joined screen 7 to prevent the heterogeneous self-joined screen 7 from not moving along the guide rail 9.

[0065] When the heterogeneous self-connecting screen 7 moves along the guide rail 9 to the top of the L-shaped track 91, the slider of the heterogeneous self-connecting screen 7 will press against the screen changer 11. After the force is applied to the screen changer 11, it will rotate in the direction of movement of the heterogeneous self-connecting screen 7. The reset spring will stretch, and the screen changer 11 will clamp the heterogeneous self-connecting screen 7 to achieve temporary fixation. Then, the staff can start to reel out the wire and change the screen of the heterogeneous self-connecting screen 7. After changing the screen, manually move the screen changer 11 to cancel its limit lock on the heterogeneous self-connecting screen 7, and then the heterogeneous self-connecting screen 7 will return to the working position along the L-shaped track 91 under the action of gravity. After the heterogeneous self-connecting screen 7 leaves, the screen changer 11 is released, and the screen changer 11 returns to its initial state under the action of the reset spring.

[0066] The present invention provides a method for using an intelligent fully automatic crushing and screening test device, which comprises the following steps:

[0067] Step 1: Preparation: Place the device steadily on the test bench and confirm the connection status of each port of the device, paying special attention to the connection of the power supply and control system. Check whether the functions of the vibrating screen motor 10 and the crushing device 4 are normal, and ensure that the heterogeneous self-connecting screen 7 is installed correctly and without damage. Connect the screen changer 11 to the heterogeneous self-connecting screen 7 to ensure that the stretching and vibration of the heterogeneous self-connecting screen 7 are as expected, and that the screen changer 11 can normally separate the screen body 72 and the vibrating screen wire. Prepare the soil sample to be crushed and screened, and ensure that its volume is smaller than the feed hopper 2.

[0068] In step 2, soil sample crushing, the human-machine interface of the central controller 3 controls the operation of the adjustment components in the crushing device 4, which in turn rotates the bidirectional screw 42 when the drive motor 43 is running. The movement of the bidirectional screw 42 causes the two carrier plates 45 threaded thereto to be adjusted in displacement with the assistance of the guide rod 44.

[0069] The movement of the two carrier plates 45 adjusts the spacing between the two turbine cutter rollers 46 of the crushing assembly in the crushing device 4, ensuring both efficient and safe crushing. The soil sample is then fed into the housing 1 through the hopper 2. The soil sample enters the crushing device 4, where it begins to be crushed in a rectangular shape. The central controller 3's human-computer interaction platform adjusts the speed of the rotary motor 47 in the crushing device 4 to accommodate soil samples of varying hardness and ensure thorough crushing.

[0070] Step 3: Vibration screening: Start each vibrating screen motor 10 through the human-machine interaction platform of the central controller 3. During operation, the vibrating screen motor 10 stretches the vibrating screen wire, causing the heterogeneous self-connecting screen 7 to slide back and forth in a small and rapid manner. During the movement of the heterogeneous self-connecting screen 7, the spring damping members 74 provided thereon realize the vibration effect of the heterogeneous self-connecting screen 7 under contact with the corresponding support 5, thereby screening the crushed soil sample. To ensure that soil samples of different particle sizes can pass through the screening smoothly, the frequency and amplitude of the vibrating screen motor 10 and the screen body 72 of different mesh sizes in the heterogeneous self-connecting screen 7 are adjusted according to the characteristics of the soil sample.

[0071] Step 4: Load Monitoring. Each load sensor in the load sensor group 6 is activated at the start of the sieve vibration process to monitor the mass of soil samples on each layer of the heterogeneous self-interconnecting screen 7 and the collection bin 8. The load sensor groups 6 on each layer of the guide rails 9 ensure accurate measurement of the mass of soil samples of varying particle sizes on the corresponding heterogeneous self-interconnecting screen 7. Data monitored by each load sensor group 6 is transmitted via sensor connection lines 12 to the central controller 3 for analysis. The display screen of the human-computer interaction platform in the central controller 3 displays real-time data, allowing the operator to monitor the experimental progress.

[0072] Step 5: Clean the soil sample. After the crushing and screening is completed, turn off the vibrating screen motor 10 and other related equipment. Open the receiving bin 8, remove the receiving bin 8 from the housing 1, and empty the crushed and screened soil sample. The central controller 3 saves and processes the test data, analyzes the screening results based on the quality of the soil samples of different particle sizes, automatically generates a gradation curve, and outputs the following report:

[0073]

[0074] The cumulative mass of the retained sieved soil is calculated by the following formula:

[0075] ;

[0076] Where: m c is the cumulative mass of the sieved soil, g; m i For the The mass of soil sample retained on the sieve aperture is greater than or equal to the current sieve aperture, g. The total number of sieves with apertures greater than or equal to the current sieve aperture.

[0077] The mass of soil smaller than the hole diameter is calculated by the following formula:

[0078] ;

[0079] Where: m p is the mass of soil smaller than the aperture, g; m n is the mass of the soil sample on the sieve and the receiving bin that is smaller than the aperture, g. The total number of screens and receiving bins with apertures smaller than the current one.

[0080] The percentage of soil mass smaller than the pore size is calculated by the following formula:

[0081] ;

[0082] Where: x is the percentage of the mass of soil sample with particle size smaller than this value to the total mass of soil sample, %; m t is the total mass of the sample, g.

[0083] The mass percentage of standard soil samples smaller than the pore size is calculated by the following formula:

[0084] ;

[0085] Where: y is the percentage of the mass of the standard soil sample with a particle size smaller than the particle size to the total mass of the standard soil sample, %; m d is the total mass of standard soil samples with particle size below the set fine sieve aperture value, g. The cumulative curve of soil particle size distribution is shown in the attached figure. Figure 10 shown.

[0086] Step 6: Clean the equipment. After the crushing and screening test, turn off the power to ensure safety. Then, clean the heterogeneous self-connecting screen 7, crushing device 4, and other parts that come into contact with the soil sample to ensure that no impurities remain in the equipment. Check the integrity of all equipment components to ensure that the equipment is in optimal condition for the next test.

[0087] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An intelligent fully automatic crushing and screening test device, comprising a housing (1) and a feeding hopper (2) arranged on the top of the housing (1), characterized in that: The housing (1) is provided with a crushing device (4) located directly below the feeding hopper (2), and the crushing device (4) is used for crushing the soil. A collecting bin (8) for collecting the soil is provided directly below the crushing device (4). Pillars (5) are symmetrically provided on the front side of the top of the collecting bin (8). A plurality of guide rail groups located on two of the pillars (5) are linearly distributed longitudinally between the collecting bin (8) and the crushing device (4). Each guide rail group is movably connected to a heterogeneous self-connecting screen (7) for screening the soil, and the top of the guide rail group is provided with a self-connecting screen (7) for screening the soil. A vibrating screen motor group for driving the heterogeneous self-connecting screen (7) is also installed at the end, a screen changer group is provided above the vibrating screen motor group, a load sensor group (6) located on the inner wall of the shell (1) is provided below the receiving bin (8), and a load sensor group (6) for load monitoring is also installed below each guide rail group, a central controller (3) located on the shell (1) is installed on the left side of the crushing device (4), and the central controller (3) and the multiple load sensor groups (6) are connected via sensor connection lines (12); The guide rail group includes two guide rails (9), wherein the guide rail (9) is composed of an L-shaped rail (91) and a limiter (92), the front end of the L-shaped rail (91) is arranged on the pillar (5), and a rectangular slide groove is opened on the top shell wall of the L-shaped rail (91), and the limiter (92) includes a plurality of uniformly distributed on the L-shaped rail (91), and the limiter (92) is used to constrain the position of the displacement adjustment of the heterogeneous self-connecting screen (7); The load sensor group (6) is composed of two load sensors, which are respectively arranged at the bottom of the corresponding L-shaped track (91), and the load sensors are used to monitor the load of the heterogeneous self-connecting screen (7); The vibrating screen motor group is composed of two vibrating screen motors (10), and a straight plate is fixedly connected to the top side wall of each L-shaped track (91), and the vibrating screen motor (10) is installed on the straight plate; The screen changer group is composed of two screen changers (11), wherein the screen changer (11) is located directly above the vibrating screen motor (10), an opening is provided on the back shell wall of the shell (1), and a plurality of the screen changers (11) are arranged on the corresponding inner wall of the opening, and a vibrating screen steel wire passes through the screen changer (11), one end of the vibrating screen steel wire is bound to the output end of the corresponding vibrating screen motor (10), and the other end passes through the corresponding rectangular chute and is bound to the corresponding heterogeneous self-connecting screen (7).

2. The intelligent fully automatic crushing and screening test device according to claim 1, characterized in that: A feed port is provided on the top wall of the shell (1), and the feeding hopper (2) is installed in the feed port. The feeding hopper (2) is used for feeding soil. A notch is provided on the right side wall of the shell (1), and the notch is used to facilitate the drawing and pulling of the material receiving bin (8).

3. The intelligent fully automatic crushing and screening test device according to claim 1, characterized in that: The crushing device (4) is composed of a loading frame (41), a crushing assembly, and an adjustment assembly, wherein the loading frame (41) is arranged inside the shell (1) and located at the top of the support (5), and through grooves are provided on the left and right side walls of the loading frame (41); The crushing assembly is composed of a turbine cutter roller (46) and a rotary motor (47), wherein the turbine cutter roller (46) and the rotary motor (47) each include two turbine cutter rollers (46) and two rotary motors (47), the two turbine cutter rollers (46) are symmetrically arranged inside the loading frame (41), and the right end of the turbine cutter roller (46) passes through the corresponding through slot, and the two rotary motors (47) are respectively installed at the left end of the corresponding turbine cutter roller (46), and the end of the rotary motor (47) away from the turbine cutter roller (46) also passes through the corresponding through slot; The adjustment components include two, which are respectively arranged on the left and right outer sides of the loading frame (41), and the adjustment components are composed of a bidirectional screw rod (42), a driving motor (43), a guide rod (44) and a carrier plate (45), wherein the bidirectional screw rod (42) and the guide rod (44) are symmetrically arranged on the upper and lower sides of the through groove, and the bidirectional screw rod (42) and the guide rod (44) are both installed with a support, and the support is fixedly connected to the corresponding side wall of the loading frame (41), the driving motor (43) is installed at the front end of the bidirectional screw rod (42) and is fixedly connected to the corresponding support, and the carrier plate (45) includes two, which are symmetrically sleeved on the bidirectional screw rod (42) and the guide rod (44) in a front-back manner; The right ends of the plurality of turbine blade rollers (46) are movably connected to the corresponding carrier plates (45) through bearings, and the left sides of the plurality of rotary motors (47) are also respectively arranged on the corresponding carrier plates (45).

4. The intelligent fully automatic crushing and screening test device according to claim 1, characterized in that: The heterogeneous self-connecting screen (7) is composed of a screen frame (71), a screen body (72), a special-shaped groove (73) and a spring damping member (74), wherein the screen frame (71) is located above the same group of L-shaped tracks (91), and the bottom of the screen frame (71) is slidably connected to the rectangular slide groove of the L-shaped track (91) through a slider, the screen body (72) is installed in the middle of the screen frame (71), the special-shaped groove (73) includes two, both are arranged on the front side shell wall of the screen frame (71), and the two special-shaped grooves (73) are arranged symmetrically between the left and right, and the spring damping member (74) also includes two, respectively arranged in the corresponding special-shaped grooves (73).

5. The intelligent fully automatic crushing and screening test device according to claim 4, characterized in that: A groove is provided on the inner wall of the side of each of the special-shaped grooves (73), and the spring damping member (74) includes a damping block (741) movably connected to the groove, and the damping block (741) is connected to the inner wall of the groove via a compression spring (742).

6. A method for using the intelligent fully automatic crushing and screening test device according to any one of claims 1 to 5, characterized in that: The method comprises the following steps: Step 1: Preparation: Place the device on the test bench steadily, confirm the connection of each port of the device, pay special attention to the connection of the power supply and control system, check whether the function of the vibrating screen motor (10) and the crushing device (4) is normal, ensure that the heterogeneous self-connecting screen (7) is installed correctly and without damage, and the connection between the screen changer (11) and the heterogeneous self-connecting screen (7), ensure that the stretching and vibration of the heterogeneous self-connecting screen (7) are in line with expectations, and that the screen changer 11 can normally separate the screen body (72) and the vibrating screen wire, prepare the soil sample to be crushed and screened, and ensure that its volume is smaller than the feeding hopper (2); Step 2: Crushing the soil sample. The distance between the two turbine cutter rollers (46) in the crushing device (4) is set through the human-machine interactive platform of the central controller (3) to ensure crushing efficiency and safety. Then, the soil sample is fed into the interior of the shell (1) through the feeding hopper (2). The soil sample enters the crushing device (4). As the crushing device (4) starts to operate, the soil sample is crushed. The speed of the rotating motor (47) in the crushing device (4) is adjusted through the human-machine interactive platform of the central controller (3) to adapt to soil samples of different hardness and ensure their thorough crushing. Step 3: Vibration screening. Each vibrating screen motor (10) is started through the human-machine interaction platform of the central controller (3). During the operation of the vibrating screen motor (10), the vibrating screen steel wire is stretched to make the heterogeneous self-connected screen (7) vibrate rapidly in a forward and backward manner, thereby screening the crushed soil sample. To ensure that soil samples of different particle sizes can pass through the screening smoothly, the frequency and amplitude of the vibrating screen motor (10) and the screen body (72) of different meshes in the heterogeneous self-connected screen (7) are adjusted according to the characteristics of the soil sample. Step 4, load monitoring. Each load sensor in the load sensor group (6) is started at the beginning of the vibrating screen to monitor the mass of the soil samples on each layer of the heterogeneous self-connecting screen (7) and the collecting bin (8). The load sensor group (6) on each layer of the guide rail (9) is used to ensure the accurate measurement of the mass of the soil samples of different particle sizes on the corresponding heterogeneous self-connecting screen (7). The data monitored by each load sensor group (6) is transmitted to the central controller (3) through the sensor connection line (12) for data analysis. The display screen of the human-computer interaction platform in the central controller (3) will display real-time data for the operator to monitor the experimental process. Step 5: Cleaning the soil sample: After the crushing and screening is completed, turn off the vibrating screen motor (10) and other related equipment, open the material receiving bin (8), remove the material receiving bin (8) from the housing (1), and empty the crushed and screened soil sample; Step 6: Clean the equipment. After the crushing and screening test, turn off the power of the equipment to ensure safety. Then clean the heterogeneous self-connecting screen (7), crushing device (4) and other parts that come into contact with the soil sample to ensure that there are no impurities remaining in the equipment. Check the integrity of each component of the equipment to ensure that the equipment is in the best condition for the next test.

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