Intelligent full-automatic crushing and screening test device and method

Abstract

The invention discloses an intelligent full-automatic crushing and screening test device and method, and belongs to the technical field of soil crushing and screening. Aiming at the problems that an existing soil body crushing and screening method is high in labor cost and affects test accuracy, the following technical scheme is provided, the soil body crushing and screening device comprises a shell and a feeding hopper arranged on the top of the shell, a crushing device located under the feeding hopper is arranged in the shell, the crushing device is used for crushing a soil body, and the feeding hopper is arranged in the shell. A heterogeneous self-connection screen used for screening soil is arranged under the crushing device, a material collecting bin used for collecting the soil is arranged under the heterogeneous self-connection screen, and supporting columns are arranged on the front side of the top of the material collecting bin in a bilateral symmetry mode. The crushing device is used for replacing manpower to crush the soil body, so that the labor intensity of testers is reduced, the vibrating screen motor can be connected with the heterogeneous self-connection screen, uniform and reliable screening of the soil body is achieved, the accuracy of the test result is guaranteed, finally, the full-automatic operation function is achieved, and the test efficiency is improved. The operation of a screening test can be completed, and the precision and stability of the test are improved.

Description

Technical Field

[0001] The 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 test is one of the most basic and important tests in soil mechanics. Its main purpose includes determining the particle composition and gradation of soil, and providing basic data for soil classification and engineering design. Traditional screening test has some problems: cumbersome operation and easy to make mistakes; high manual operation intensity and easy to fatigue; inaccurate test results, etc.

[0003] Traditional tests require testers to manually crush the original soil or the recovered soil samples in advance, which makes it difficult to ensure the consistency of the crushing effect. Since the test will generate a lot of dust, it will seriously affect the health of the testers and the laboratory environment. At the same time, manual operation requires testers to hold the sieve for a long time for uniform screening, which greatly increases the workload. In addition, due to differences in the operating skills of testers, different screening times or readings may result in different screening results under the same test conditions.

[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 utilizing a crushing device instead of manual crushing of the soil, and connects 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, wherein a crushing device located directly below the feeding hopper is arranged inside the shell, and the crushing device is used for crushing soil, and a collecting bin for collecting soil is arranged directly below the crushing device, and pillars are symmetrically arranged on the left and right sides of the top front side of the collecting bin, and a plurality of guide rail groups located on two of the pillars are longitudinally linearly distributed between the collecting bin and the crushing device, and 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 to move is also installed on the top of the guide rail group, and a screen changer group is arranged above the vibrating screen motor group, and a load sensor group located on the inner wall of the shell is arranged below the collecting bin, and a load sensor group for load monitoring is also installed below each guide rail group, and 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 shell wall of the shell, and the feeding hopper is installed in the feed port, and the feeding hopper is used for feeding the soil;

[0009] A notch is provided on the right side wall of the shell body, and the notch is used to facilitate the pulling out 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 opened on the left and right shell walls of the loading frame;

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

[0012] The adjustment assembly includes two, which are respectively arranged on the left and right outer sides of the loading frame, and the adjustment assembly is composed of a bidirectional screw rod, a driving motor, a guide rod and a carrier plate, wherein the bidirectional screw rod and the guide rod are symmetrically arranged on the upper and lower sides of the through slot, and the bidirectional screw rod and the guide rod are both equipped with a support, and the support is fixedly connected to the corresponding side wall of the loading frame, the driving motor is installed at the front end of the bidirectional screw rod and is fixedly connected to the corresponding support, and the carrier plate includes two, which are symmetrically sleeved on the bidirectional screw rod 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 sides 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 rail and a stopper, the front end of the L-shaped rail is arranged on a support, and a rectangular slide groove is provided on the top shell wall of the L-shaped rail, and the stopper includes a plurality of stoppers evenly distributed on the L-shaped rail, and the stopper is used to constrain the position of the displacement adjustment of the heterogeneous self-joined screen;

[0015] The load sensor group is composed of two load sensors, which are respectively arranged at the bottom of the corresponding L-shaped track, and 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, special-shaped grooves and spring damping parts, 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 grooves include two, both are arranged on the front side shell wall of the screen frame, and the two special-shaped grooves are arranged symmetrically on the left and right, and the spring damping parts also include two, which are respectively arranged in the corresponding special-shaped grooves.

[0017] As a further solution of the present invention, a groove is formed 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 a compression 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, an opening is provided on the back shell wall of the shell, and 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 slide groove and is bound to the corresponding heterogeneous self-connecting screen.

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

[0021] 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 functions of the vibrating screen motor and the crushing device are normal, 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 vibrating 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 the crushing efficiency. Then the soil sample is put into the shell through the feeding hopper. The soil sample enters the crushing device. As the crushing device runs, the soil sample begins to be 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 properties and ensure the thoroughness of its crushing.

[0023] Step 3: Vibration screening: start each vibrating screen motor 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 can be screened smoothly, the frequency and amplitude of the vibrating screen motor and the screen bodies of different apertures in the heterogeneous self-connected screen can be adjusted according to the characteristics of the soil sample;

[0024] Step 4: Load monitoring. Each load sensor in the load sensor group is started at the beginning of the vibrating screen to monitor the quality of soil samples on each layer of heterogeneous self-connected screens 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 with different particle sizes on the corresponding heterogeneous self-connected screens. 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 material receiving bin, take the material receiving bin out of the shell, and empty the crushed and screened soil sample.

[0026] 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, 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] 1. The rotation of the turbine cutter roller in the crushing device and the vibration of the heterogeneous self-connecting screen are controlled by a rotating motor and multiple sets of vibrating screen motors, achieving fully automated operation with a high degree of automation. Compared with the traditional screening test using manual crushing and soil screening methods, this device greatly reduces the labor intensity of the test personnel and improves the accuracy of the test. The device adopts modular and easy-to-maintain design, which is easy to promote and apply.

[0029] 2. By setting up a crushing device, the turbine cutter roller is driven by a motor to rotate, and the spacing and speed between the two turbine cutter rollers can be adjusted to avoid large particles from being crushed while achieving the effect of multi-stage circulation and full crushing. This design replaces the traditional manual crushing method, improves the crushing efficiency and ensures the uniformity and consistency of the crushing process, greatly improving the accuracy of the screening test.

[0030] 3. The present invention designs a vibrating screen motor and a heterogeneous self-connecting screen. The vibration of the screen is controlled by the vibrating screen motor. Combined with the design of the heterogeneous self-connecting screen, an efficient and uniform screening effect is achieved. The number of screens and the vibration mechanism can be adjusted according to different soil sample characteristics and actual needs to optimize screening efficiency and accuracy.

[0031] 4. The design of the screen changer enables operators to quickly replace screens with different apertures and perform cleaning and maintenance, thereby keeping the equipment running for a long time.

[0032] 5. The present invention designs a central controller and a multi-layer load sensor group. By installing a load sensor group under each layer of heterogeneous self-connected screens, the quality of soil samples with 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 set of data processing and user interaction platforms, which can monitor and adjust test parameters in real time to ensure accurate control of the test. The controller is also responsible for data collection, analysis and report generation, which improves the automation level of data processing. At the same time, the results of each test can be uploaded to the cloud and a large database of soil particle size gradation can be established for 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 schematic diagram of the enlarged local structure at A;

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

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

[0042] Fig.10 This is an example of the particle size distribution curve of soil.

[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 damper; 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 hopper 2 arranged on the top of the shell 1. A feed port is provided on the top shell wall of the shell 1, and the hopper 2 is installed in the feed port. The hopper 2 is used for feeding soil. The hopper 2 is provided to facilitate the entry of the original soil or the test recovered soil sample into the interior of the shell 1 through the feed port. A notch is provided on the right shell wall of the shell 1, and the notch is used to facilitate the pulling and drawing 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 the embodiment of the present invention, a crushing device 4 is provided inside the housing 1 and is located directly below the feeding hopper 2. The crushing device 4 is used to crush 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 top front side of the collecting bin 8. The arrangement of the collecting bin 8 below the crushing device 4 can realize the collection and processing of the soil that has been crushed by the collecting bin 8.

[0046] A plurality of guide rail groups on two pillars 5 are longitudinally distributed between the receiving bin 8 and the crushing device 4. Each guide rail group is movably connected with a heterogeneous self-connecting screen 7 for screening the soil. According to the screening requirements of the crushed soil sample, the number of the heterogeneous self-connecting screens 7 can be adjusted, and the setting range is three to seven. In this embodiment, five are used.

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

[0048] A load sensor group 6 located on the inner wall of the housing 1 is provided below the material receiving bin 8, and a load sensor group 6 for load monitoring is also installed below each guide rail group. Through the setting of the load sensor group 6, the load conditions on the material receiving bin 8 and each heterogeneous self-connecting screen 7 can be monitored.

[0049] The central controller 3 located on the housing 1 is installed on the left side of the crushing device 4. The central controller 3 is connected to the multiple load sensor groups 6 through the sensor connection line 12. The central controller 3 is mainly composed of a processor, a memory, a human-computer interaction platform, etc. The processor and the memory are responsible for completing the operation of the device and the collection, storage and processing of sensor data. The human-computer interaction platform allows the operator to interact with the machine and change the test conditions and test parameters as needed.

[0050] The central controller 3 is responsible for the deployment of the entire device. Its core function is to ensure that the device operates according to the established procedures and efficiency. Each screening result is sorted and stored by the processor, and then a large database of soil particle size distribution is established. In addition, the data of the large database of soil particle size distribution is uploaded to the cloud via WIFI, which is convenient for viewing and using on mobile terminals such as laptops.

[0051] See also Figure 3-Figure 5 In the 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 arranged inside the housing 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.

[0052] The crushing assembly is composed of a turbine cutter roller 46 and a rotary motor 47. There are 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. 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.

[0053] The adjustment assembly includes two, which are respectively arranged on the left and right outer sides of the loading frame 41. The adjustment assembly is composed of a bidirectional screw rod 42, a drive motor 43, a guide rod 44 and a carrier plate 45. The bidirectional screw rod 42 and the guide rod 44 are symmetrically arranged on the upper and lower sides of the through slot, and the bidirectional screw rod 42 and the guide rod 44 are both installed with a support, which is fixedly connected to the corresponding side wall of the loading frame 41.

[0054] The driving motor 43 is installed at the front end of the bidirectional screw 42 and is fixedly connected to the corresponding support. There are two carrier plates 45, which are symmetrically sleeved on the bidirectional screw 42 and the guide rod 44. When the bidirectional screw 42 is driven to rotate by the driving motor 43, each carrier plate 45 threadedly connected to the bidirectional screw 42 will move linearly with the assistance of the guide rod 44, so as to adjust the spacing between the two turbine cutter rollers 46.

[0055] The right ends of the plurality of turbine cutter rollers 46 are movably connected to the corresponding carrier plates 45 through bearings. The left sides of the plurality of rotary motors 47 are also respectively arranged on the corresponding carrier plates 45. By adjusting the spacing between the two turbine cutter rollers 46, the spacing between the blades on the turbine cutter rollers 46 is reduced, so that the clamp angle formed by the soil material and the blades on both sides is reduced, so that the soil is crushed more thoroughly in the crushing stage, and the accuracy of the soil sample analysis results is improved.

[0056] See also Figure 3 , Figure 4 and Figure 8 In the 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 stopper 92. The front end of the L-shaped rail 91 is arranged on and fixed to the support 5, so as to further ensure 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 stopper 92 includes a plurality of evenly distributed on the L-shaped rail 91, and the stopper 92 is used to constrain the displacement adjustment direction of the heterogeneous self-connecting screen 7.

[0057] The load sensor group 6 is composed of two load sensors. The two load sensors 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 sensor senses the load signal through the internal resistance strain gauge and converts the load signal into an electrical signal output for monitoring the quality of the soil sample on the heterogeneous self-connecting screen 7. After obtaining the quality of the soil sample, the corresponding sensor is connected to the signal processing core unit and uploaded to the central controller 3 to centrally analyze and process the soil sample stratification quality data.

[0058] See also Figure 3 , Figure 4 , Figure 6 and Figure 7 In the 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 installed in the middle of the screen frame 71. There are two special-shaped grooves 73, both of which are arranged on the front shell wall of the screen frame 71, and the two special-shaped grooves 73 are arranged symmetrically. There are also two spring damping members 74, which are respectively arranged in the corresponding special-shaped grooves 73.

[0060] A groove is formed on the inner wall of the side of each special-shaped groove 73 . The spring damping member 74 includes a damping block 741 movably connected in 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 Fig. 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 is composed of two screen changers 11. Among them, 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 multiple screen changers 11 are movably connected to the corresponding inner wall of the opening through a pin shaft, and a reset spring is also provided between the screen changer 11 and the inner wall of the opening of the shell 1. A vibrating screen wire passes through the screen changer 11, one end of which 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.

[0063] The vibrating screen motor 10 and the vibrating screen wire act to make the heterogeneous self-joined screen 7 move along the guide rail 9. Due to the setting of the spring damping member 74 in the heterogeneous self-joined screen 7, the damping block 741 in the spring damping member 74 will contact the support 5 during the movement of the heterogeneous self-joined screen 7, so that the extrusion spring 742 is stretched. When the vibrating screen motor 10 is not in action, the heterogeneous self-joined screen 7 will return to its initial position under the action of the rebound force of the extrusion spring 742.

[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 draw 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 also 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, the method comprising 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. The connection between the screen changer 11 and the heterogeneous self-connecting screen 7 ensures 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] Step 2: Crushing the soil sample, the operation of the adjustment component in the crushing device 4 is set through the human-machine interaction platform of the central controller 3, and then the bidirectional screw rod 42 is rotated when the driving motor 43 is running. The movement of the bidirectional screw rod 42 causes the two carrier plates 45 threaded thereon to be adjusted in displacement with the assistance of the guide rod 44.

[0069] With the movement of the two carrier plates 45, the spacing between the two turbine cutter rollers 46 of the crushing assembly in the crushing device 4 is adjusted to ensure crushing efficiency and safety. Then the soil sample is put into the housing 1 through the feeding hopper 2. The soil sample enters the crushing device 4, and the soil sample begins to be rectangularly crushed as the crushing device 4 runs. The speed of the rotating motor 47 in the crushing device 4 can be adjusted through the human-machine interaction platform of the central controller 3 to adapt to soil samples of different hardness and ensure the thoroughness of their crushing.

[0070] Step 3: Vibration screening: start each vibrating screen motor 10 through the human-machine interaction platform of the central controller 3. During the operation, the vibrating screen motor 10 stretches the vibrating screen steel wire to make the heterogeneous self-connecting screen 7 slide quickly and backward in a small amplitude. During the movement of the heterogeneous self-connecting screen 7, the spring damping member 74 arranged on it realizes the vibration effect of the heterogeneous self-connecting screen 7 under the contact with the corresponding support 5, thereby screening the crushed soil sample. In order to ensure that soil samples of different particle sizes can be screened smoothly, the frequency and amplitude of the vibrating screen motor 10 and the screen body 72 of different apertures in the heterogeneous self-connecting screen 7 can be adjusted according to the characteristics of the soil sample.

[0071] 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 quality of the soil samples on each layer of the heterogeneous self-connecting screen 7 and the receiving bin 8. The load sensor group 6 on each layer of the guide rail 9 is used to ensure the accurate measurement of the quality of soil with 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.

[0072] Step 5: Clean the soil sample. When the crushing and screening are 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 soil sample after crushing and screening. The central controller 3 saves and processes the test data, analyzes the screening results according to the quality of soil samples with different particle sizes, automatically generates a gradation curve and outputs the following report:

[0073]

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

[0075]

[0076] Where: m c is the accumulated mass of the sieved soil, g; m i is the mass of soil sample retained on the i-th sieve with an aperture greater than or equal to the current sieve aperture, g; c is the total number of sieves with an aperture 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 hole diameter, g; m n is the mass of soil samples on the sieves and receiving bins with an aperture smaller than the current one, g; p is the total number of sieves and receiving bins with an aperture 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 smaller than this particle size to the total mass of the soil sample, %; m t is the total mass of the soil sample, g. An example of the particle size distribution curve of soil is shown in the attached Fig.10 shown.

[0083] 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 contact the soil sample to ensure that there are no impurities left 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.

[0084] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope 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), the crushing device (4) is used for crushing soil, a collecting bin (8) for collecting soil is provided directly below the crushing device (4), pillars (5) are symmetrically provided on the top front side 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 soil, and the top of the guide rail group is provided with a plurality of self-connecting screens (7) for screening soil. A vibrating screen motor group for driving the activities of the heterogeneous self-connecting screen (7) is also installed at the end, and a screen changer group is arranged above the vibrating screen motor group. A load sensor group (6) located on the inner wall of the shell (1) is arranged 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) is connected to the multiple load sensor groups (6) through sensor connecting lines (12).

2. The intelligent fully automatic crushing and screening test device according to claim 1 is 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 pulling out of the material receiving bin (8).

3. The intelligent fully automatic crushing and screening test device according to claim 1 is 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 housing (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 rotating motor (47), wherein the turbine cutter roller (46) and the rotating motor (47) each include two turbine cutter rollers (46) and two rotating 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 rotating motors (47) are respectively installed at the left end of the corresponding turbine cutter roller (46), and the end of the rotating 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 equipped 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-to-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 ends 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 is characterized in that: The guide rail assembly comprises two guide rails (9), wherein the guide rail (9) is composed of an L-shaped rail (91) and a stopper (92), the front end of the L-shaped rail (91) is arranged on a support (5), and a rectangular slide groove is provided on the top shell wall of the L-shaped rail (91), and the stopper (92) comprises a plurality of stoppers evenly distributed on the L-shaped rail (91), and the stopper (92) is used to constrain the displacement adjustment direction of the heterogeneous self-joined 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). The load sensors are used to monitor the load of the heterogeneous self-connecting screen (7).

5. The intelligent fully automatic crushing and screening test device according to claim 4 is 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, which are respectively arranged in the corresponding special-shaped grooves (73).

6. The intelligent fully automatic crushing and screening test device according to claim 5 is characterized in that: A groove is formed on the inner wall of the side of each of the special-shaped grooves (73); the spring damping member (74) comprises 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).

7. The intelligent fully automatic crushing and screening test device according to claim 4 is characterized in that: 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.

8. The intelligent fully automatic crushing and screening test device according to claim 7 is characterized in that: 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 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 slide groove and is bound to the corresponding heterogeneous self-connecting screen (7).

9. A method for using an intelligent fully automatic crushing and screening test device according to any one of claims 1 to 8, 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 the control system, check whether the functions of the vibrating screen motor (10) and the crushing device (4) are 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) meet 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 the crushing efficiency. Then, the soil sample is fed into the interior of the housing (1) through the feeding hopper (2). The soil sample enters the crushing device (4). As the crushing device (4) runs, the soil sample begins to be 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 properties and ensure the thoroughness of their 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. In order to ensure that soil samples of different particle sizes can be screened smoothly, the frequency and amplitude of the vibrating screen motor (10) and the screen bodies (72) of different apertures in the heterogeneous self-connected screen (7) can be 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 quality of the soil samples on each layer of the heterogeneous self-connecting screen (7) and the receiving bin (8). The load sensor group (6) on each layer of the guide rail (9) is used to ensure the accurate measurement of the quality of soil with 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 is completed, the power supply of the equipment needs to be turned off to ensure safety. Then clean the heterogeneous self-connecting screen (7), the 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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