Intelligent recycled concrete aggregate particle size and shape image acquisition device and method

Abstract

The invention relates to the field of constructional engineering detection, and particularly discloses an intelligent recycled concrete aggregate particle size and shape image acquisition device and method.The device comprises a feeding part, a screening part, a discharging part and a detection part which are sequentially arranged, the discharging end of the feeding part, the feeding end of the screening part, the discharging end of the screening part, the feeding end of the discharging part, the discharging end of the discharging part and the feeding end of the detecting part are sequentially arranged from high to low. Recycled concrete aggregate is conveyed to the screening part through the feeding part, aggregate with the set particle size is screened out through the screening part and then falls into the discharging part, discharging is quantitatively conducted on the detection part through the discharging part, and aggregate patterns are collected by the detection part in batches in real time. According to the invention, more accurate screening of single particles in the same particle size interval can be realized, and images can be collected and discharged in batches, so that the collected data transmitted to matlab cannot be immediately brushed off by subsequent data.

Description

Technical Field

[0001] This invention relates to the field of building engineering testing, specifically to an intelligent device and method for acquiring images of the particle size and shape of recycled concrete aggregates. Background Technology

[0002] In the field of engineering construction, although individual particles may have the same particle size range, their shapes are not the same. The different shapes affect the probability of their application and their performance when working together with surrounding materials. Therefore, the distribution and proportion of particles are crucial to the engineering performance of mixed recycled aggregates and the improvement of recycled concrete performance. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide an intelligent image acquisition device for the particle size and shape of recycled concrete aggregate, which can achieve more accurate screening of single particles within the same particle size range.

[0004] Another objective of this invention is to provide an intelligent method for acquiring images of the particle size and shape of recycled concrete aggregates. By setting up a receiving cylinder and feeding in batches, images can be collected and discharged in batches, ensuring that the collected data is not immediately erased by subsequent data when transmitted to MATLAB, allowing for time intervals for analysis.

[0005] To further achieve the above objectives, the present invention adopts the following technical solution: an intelligent recycled concrete aggregate particle size and shape image acquisition device, comprising a feeding section, a screening section, a discharging section, and a detection section arranged sequentially, wherein the discharge end of the feeding section, the feed end of the screening section, the discharge end of the screening section, the feed end of the discharging section, the discharge end of the discharging section, and the feed end of the detection section are arranged sequentially from high to low; recycled concrete aggregate is conveyed to the screening section through the feeding section, aggregates of a set particle size are screened out by the screening section and fall into the discharging section, and the discharging section quantitatively discharges aggregates to the detection section, and the detection section collects aggregate patterns in batches in real time.

[0006] Optionally, the feeding section includes a lifting frame, a roller assembly mounted on the lifting frame, and a track annularly wrapped around the outer periphery of the roller assembly. The lifting frame includes an inclined section that slopes upward toward the screening section and a horizontal section connected to the inclined section. One end of the horizontal section facing the screening section is the discharge end, which is located above the feed end of the screening section. The roller assembly includes a plurality of rollers that are adapted to the size of the lifting frame and are installed at intervals along the lifting frame at an angle upward, with a track wrapped around their outer periphery.

[0007] Optionally, the screening section includes a sleeve, a screen and a cylindrical screen column inclined from top to bottom inside the sleeve, and a blower located on one side of the sleeve; the screen and the cylindrical screen column are inclined in opposite directions and at the same angle; both the lowest point of the screen and the contact position with the sleeve and the lowest end of the cylindrical screen column and the contact position with the sleeve have rectangular openings, and the lowest end of the cylindrical screen column extends out of the rectangular opening and is located above the feed end of the discharge section; the fan blades of the blower are located inside the sleeve and face the side of the cylindrical screen column.

[0008] Furthermore, the sleeve has a discharge port on the side away from the blower, the lower end of the discharge port extends to the bottom of the sleeve, and a first receiving groove is installed thereon. The first receiving groove is used to collect the aggregate that has been filtered through the cylindrical screen column and blown out of the sleeve by the blower. A second receiving groove is provided at the rectangular opening located at the lowest point of the screen where it contacts the sleeve. The second receiving groove is installed on the outside of the sleeve and is used to collect the aggregate that has not been filtered through the screen.

[0009] Optionally, the feeding section includes a feeding cylinder support frame, a feeding cylinder disposed on the feeding cylinder support frame, and tension / compression sensors disposed on the feeding cylinder support frame; the feeding cylinder support frame is divided into a lower support and an upper support, and multiple tension / compression sensors are installed between the lower support and the upper support, the tension / compression sensors supporting the upper support of the feeding cylinder support frame; the feeding cylinder is mounted on the upper support.

[0010] Furthermore, an L-shaped iron plate assembly is installed at the bottom of the discharge cylinder. The L-shaped iron plate assembly includes two mating C-shaped baffles. Meshing gears are installed on the two C-shaped baffles. The cylinder is installed on the outer wall of the discharge cylinder through a bracket, and its output end is connected to a single-sided C-shaped baffle.

[0011] Optionally, the detection part includes a disc, an annular cover disposed on the circumferential port of the disc, and a limiting ring concentric with the disc and disposed on the disc. The annular cover is provided with multiple cameras at its upper end. The annular cover is sleeved around the disc in a ring shape and does not rotate with the disc. The limiting ring is concentric with the disc and limits the aggregate entering the disc.

[0012] Furthermore, the bottom center of the disc is connected to the output end of a vertically arranged stepper worm gear motor. The upper surface of the disc is not smooth. When the stepper worm gear motor rotates, it will drive the disc to rotate, and the aggregate will follow the disc to rotate.

[0013] Furthermore, the annular cover is equipped with a feeding gate, and a stepper motor is provided at the lower end of the feeding gate. The opening and closing of the feeding gate is achieved by the forward and reverse rotation of the stepper motor.

[0014] A method for intelligent acquisition of particle size and shape images of recycled concrete aggregates, employing the aforementioned intelligent acquisition device for particle size and shape images of recycled concrete aggregates, includes the following steps:

[0015] Step 1: The rotation of the rollers drives the track to rotate, conveying the aggregate into the sleeve of the screening section;

[0016] Step 2: By cooperating with the screen and the cylindrical screen column, the aggregate particle size is controlled within a certain range. The screened aggregate rolls into the discharge cylinder through the inclined cylindrical screen column. During this process, the dust in the sleeve is removed by the blower, and the aggregate screened by the cylindrical screen column is blown out of the sleeve by the blower.

[0017] Step 3: The extension and retraction of the cylinder will drive the opening and closing of the C-shaped baffle to complete the feeding of material from the feeding cylinder; the tension and compression sensor detects the weight of the feeding cylinder and sends a stop signal when the feeding cylinder has discharged a set amount of aggregate;

[0018] Step 4: After the aggregate falls into the disc, the aggregate moves between the limiting ring and the annular cover as the disc rotates. At the same time, the camera captures the aggregate pattern in real time and provides feedback.

[0019] Step 5: After the first round of aggregate image acquisition, the aggregate is finally accumulated at the discharge gate through the linkage of the discharge gate and the disc. At this time, the discharge gate rotates to sweep the aggregate out of the disc and collect it into the receiving cylinder.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention features a high-to-low position design, reducing the number of conveyor belt designs. The aggregate first enters the screening section of the conveyor belt, where it is screened before entering the discharge cylinder to control the quality and particle size of the aggregate.

[0022] 2. This invention can achieve multiple screenings with clear particle separation. It uses a high-definition camera to capture images with high precision, enabling more accurate screening of single particles within the same particle size range.

[0023] 3. This invention has the advantages of setting the image acquisition time and the amount of aggregate to be acquired. The setting of the feeding part facilitates batch feeding, acquisition, and discharge. The advantage is that the acquired data will not be immediately overwritten by subsequent data when transmitted to MATLAB, etc., leaving a time interval for easy analysis.

[0024] 4. This invention controls the weight of aggregate entering the container in a single cycle through a pressure sensor and a pneumatic valve, and controls the time of aggregate entry in a single cycle through a PLC controller and a pneumatic valve, resulting in a high degree of automation.

[0025] 5. The detection section of this invention features a slow-speed, high-torque stepper worm geared motor, which, combined with a disc structure, facilitates image acquisition (too high a speed may distort the image); the limiting ring design allows the aggregate to be more concentrated, facilitating material feeding through the feeding gate; the large-radius rotation increases the area of ​​aggregate that can be collected, making acquisition and analysis easier.

[0026] 6. The present invention provides controllable collection quality or timing, and compared with existing collection devices, it adds the functions of screening and controlling aggregate collection, and has the advantages of larger area collection range and collection time in terms of collection accuracy. Attached Figure Description

[0027] The accompanying drawings, which are included to provide a further understanding of this application and constitute a part of it, illustrate exemplary embodiments of the application and are used to explain the application, but do not constitute an undue limitation of the application. In the drawings:

[0028] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 This is a schematic diagram of the feeding section of the present invention;

[0030] Figure 3 Selected axial views for this invention;

[0031] Figure 4 This is a partial cross-sectional view of the present invention;

[0032] Figure 5 This is a schematic diagram of the material feeding section of the present invention;

[0033] Figure 6 This is a schematic diagram of the C-shaped baffle of the present invention;

[0034] Figure 7 This is a schematic diagram of the detection part of the present invention.

[0035] Explanation of reference numerals in the attached figures:

[0036] 100-Feeding section: 101-First stepper motor; 102-Lifting frame; 103-Roller assembly; 104-Crawler track; 105-Second stepper motor;

[0037] 200 - Screening Section: 201 - Screen Mesh; 202 - Cylindrical Screen Column; 203 - Blower; 204 - Sleeve;

[0038] 300-Discharge section: 301-Discharge cylinder; 302-Cylinder; 303-Pull-compression sensor; 304-Discharge cylinder support frame; 305-Lifting lug; 306-Solenoid valve; 307-PLC controller; 308-Air compressor; 309-C-type baffle;

[0039] 400 - Inspection Section: 401 - Stepper Turbine Gear Motor; 402 - Disc; 403 - Annular Cover; 404 - Stepper Motor; 405 - Limiting Ring; 406 - Camera; 407 - Discharge Gate; 408 - Receiving Cylinder. Detailed Implementation

[0040] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0041] Example 1:

[0042] This embodiment provides an intelligent image acquisition device for the particle size and shape of recycled concrete aggregates, such as... Figure 1 As shown, the system includes a feeding section 100, a screening section 200, a discharging section 300, and a detection section 400. The discharge end of the feeding section 100, the feed end of the screening section 200, the discharge end of the screening section 200, the feed end of the discharging section 300, the discharge end of the discharging section 300, and the feed end of the detection section 400 are arranged sequentially from high to low. Recycled concrete aggregate is conveyed to the screening section 200 through the feeding section 100. The aggregate is classified into particle size ranges through triple screening. Then, aggregate with appropriate particle size ranges is selected and falls into the discharging section 300. Finally, the discharging section 300 is controlled to quantitatively discharge the aggregate into the detection section 400 for aggregate image acquisition.

[0043] like Figure 1 , Figure 2As shown, the feeding section 100 includes a first stepper motor 101, a roller assembly 103, a lifting frame 102, a track 104, and a second stepper motor 105. The positional relationship of each component is as follows: The lifting frame 102 includes an inclined section that slopes upward toward the screening section 200 and a horizontal section connected to the inclined section. The horizontal section is the discharge end and is located above the screening section 200. The roller assembly 103 includes several rollers, which are adapted to the size of the lifting frame 102 and are installed at intervals along the lifting frame 102 at an angle upward. The track 104 wraps around the roller assembly 103 in a ring. When the roller assembly 103 rotates, the track 104 is driven to move through friction between the roller assembly 103 and the track 104. Except for the rollers connected to the motor, the other rollers in the roller assembly 103 can rotate freely, supporting the track 104. More specifically, the motors include a first stepper motor 101 and a second stepper motor 105. The roller connected to the first stepper motor 101 is located at the bottom of the inclined section. The first stepper motor 101 drives the roller at the bottom of the inclined section to rotate, allowing the track 104 to move obliquely upwards. The roller connected to the second stepper motor 105 is located at the end of the horizontal section near the inclined section. The second stepper motor 105 drives this roller to rotate, thereby driving the track 104 to move. The roller connected to the motor does not have a central bearing installed. Instead, a hole is opened in the corresponding side plate at the end of the lifting frame 102 to install a ball bearing. The central rod of the roller passes through the ball bearing, and the roller can be driven to rotate by the motor. The remaining rollers 102 are sleeved on a connecting rod, with a ball bearing in the middle that allows them to rotate freely around the connecting rod. The two ends of the connecting rod are welded to the inner side of the lifting frame 102.

[0044] The feeding section 100 operates on the following principle: the first stepper motor 101 drives the roller at the bottom of the inclined section to rotate, allowing the track 104 to move obliquely upward. Simultaneously, in sync with the first stepper motor 101, the second stepper motor 105 drives the roller at the end of the horizontal section near the inclined section to rotate, thereby driving the track 104 to move. After the aggregate enters the feeding section 100, it moves obliquely upward through the rotating track. During the process, the rough surface of the track prevents the aggregate from rolling off. As the lifting frame 102 rises, the aggregate reaches the top of the screening section 200.

[0045] like Figure 3As shown, the screening section 200 includes a screen 201, a cylindrical screen column 202, a blower 203, and a sleeve 204. The relative positions of each component are as follows: The sleeve 204 is a large iron cylinder with an open top, located below the discharge end of the feeding section 100. To facilitate material screening, two iron plates are welded to the sides of the sleeve 204, which obliquely downwards collect the aggregate into the middle of the screen 201, so that all the aggregate screened from the screen 201 can fall onto the cylindrical screen column 202. The screen 201 and the cylindrical screen column 202 are both inclinedly arranged inside the sleeve 204, with the screen 201 located on the cylindrical screen column 202. The screen 201 and the cylindrical screen column 202 are inclined in opposite directions but at the same angle. Rectangular openings are provided at the contact points between the lowest point of the screen 201 and the sleeve 204, and at the contact points between the lowest point of the cylindrical screen column 202 and the sleeve 204. The lowest point of the cylindrical screen column 202 extends out of the rectangular opening and is located above the feed end of the discharge section 300. The blower 203 is installed on one side of the sleeve 204, and the fan blades of the blower 203 are located inside the sleeve 204 and face the side of the cylindrical screen column 202. The sleeve 204 is installed on a support frame welded from steel pipes, and its height is raised to match the height of the discharge end. More specifically, the sleeve 204 has a discharge port on the side away from the blower 203, the lower end of the discharge port extends to the bottom of the sleeve 204, and a first receiving groove is installed thereon. The first receiving groove is used to collect the aggregate that has been filtered through the cylindrical screen column 203 and blown out of the sleeve 204 by the blower. A second receiving groove is provided at the rectangular opening at the lowest point of the screen 201 where it contacts the sleeve 204. The second receiving groove is installed on the outside of the sleeve 204 and is used to collect the aggregate that has not been filtered through the screen 201.

[0046] The specific implementation principle of the screening section 200 is as follows: When the aggregate is transported to its discharge end by the feeding section 100, it falls into the sleeve 204 from the discharge end. First, it is screened by the screen 201. Particles that are too large will slide out from the rectangular opening at the end of the screen 201 and be collected by the second receiving trough. Particles with a size of less than 40mm will fall onto the cylindrical screen column 202. The cylindrical screen column 202 screens out aggregates larger than 5mm. Aggregates smaller than 5mm fall out from the gaps in the cylindrical screen column 202. Aggregates between 5mm and 40mm can also fall out from the cylindrical screen column 202. The aggregate rolls down onto the cylindrical screen column 202, and the aggregate particle size is controlled between 5mm and 40mm by the screen 201 and the cylindrical screen column 202. During this process, the blower 203 removes dust from the aggregate in the sleeve 204, and the aggregate smaller than 5mm is filtered down from the cylindrical screen column 202 and blown out of the sleeve 204 by the blower and collected by the first receiving trough. The screen 201 and the cylindrical screen column 202 work together to control the aggregate particles between 5mm and 40mm, and the aggregate rolls down into the discharge cylinder 301 through the inclined cylindrical screen column 202.

[0047] like Figure 4 , Figure 5 , Figure 6 As shown, the feeding section 300 includes a feeding cylinder 301, a cylinder 302, tension / compression sensors 303, a feeding cylinder support frame 304, lifting lugs 305, a solenoid valve 306, a PLC controller 307, and an air compressor 308. The relative positions of each component are as follows: The feeding cylinder 301 is a large funnel that can hold aggregates from the screening section 200; the feeding cylinder 301 is mounted on the feeding cylinder support frame 304, which supports the feeding cylinder 301. The feeding cylinder support frame 304 is made of 50×50×3 angle iron spliced ​​and welded together; the feeding cylinder support frame 304 is divided into a lower support and an upper support, and four tension / compression sensors 303 are installed between the lower support and the upper support. 303 supports the upper part of the feeding cylinder support frame 304; four lifting lugs 305 are installed on the top of the feeding cylinder 301. The lifting lugs 305 have extremely strong toughness and strength and can withstand the lifting of the feeding cylinder 301; an L-shaped iron plate assembly is installed at the bottom of the feeding cylinder 301. The L-shaped iron plate assembly includes two mating C-shaped baffles 309. The two C-shaped baffles 309 are equipped with meshing gears. The cylinder 302 is installed on the outer wall of the feeding cylinder 301 through the bracket. Its output end is connected to one side of the C-shaped baffle 309. The cylinder 302 drives the one side of the L-shaped iron plate to rotate, which in turn drives the other side of the L-shaped iron plate to rotate through the meshing gears, thereby realizing the opening and closing of the C-shaped baffle 309 and completing the feeding. In this system, a large iron plate is installed behind the cylinder 302 via a nut at the tail end of the cylinder. Then, multiple screws are welded to the upper end of the iron plate onto the discharge cylinder 301. An air compressor 308 is installed outside the discharge cylinder support frame 304. A solenoid valve 306 is connected to the air compressor 308 and the cylinder 302. A PLC controller 307 is connected to the solenoid valve 306. The PLC controller 307 can control the air intake and exhaust of the solenoid valve 306 by using a method of reversing the DC electrical appliance through dual relays. The solenoid valve 306 allows air to enter and exit through different air holes, which in turn allows air to enter and exit through the corresponding air holes of the cylinder 302.

[0048] The specific implementation principle of the feeding section 300 is as follows: the extension and retraction of the output end of the cylinder 302 will drive the C-shaped baffle 309 at the bottom of the feeding cylinder 301 to move left and right. At this time, the gear welded to the C-shaped baffle 309 will also rotate, driving the gear set on another C-shaped baffle 309 to rotate. Because the two gears mesh directly, the gears will rotate in opposite directions. At this time, the two C-shaped baffles 309 will move in opposite directions, realizing opening and closing, and completing the feeding. In order to realize opening and closing, each gear has a through hole inside, and a round rod passes through the through hole and is welded to the feeding cylinder 301. The gear can rotate without moving its position. At the same time, in order to prevent the gear from falling out, a circular iron plate larger than the round rod is welded to the outer end of the round rod to limit its movement. The tension / compression sensor 303 is located between the upper and lower supports of the discharge cylinder support frame 304 to detect the weight of the discharge cylinder 301 in real time. More specifically, the tension / compression sensor 303 is connected to the DM1820 dynamic and static strain gauge. The weight of the discharge cylinder 301 is directly detected by the DM1820 dynamic and static strain test and analysis system in the computer. At the same time, a threshold is set, and a stop signal is issued when a certain amount of aggregate is discharged from the discharge cylinder 301 to achieve precise discharge. The discharge time can also be set by the PLC controller 307, and the cylinder 302 is controlled by the timed control of the solenoid valve 306 to release air.

[0049] like Figure 7 As shown, the detection section 400 includes a stepper worm geared motor 401, a disc 402, an annular cover 403, a stepper motor 404, a limiting ring 405, a camera 406, a discharge gate 407, and a receiving cylinder 408. The relative positions of each component are as follows: The output end of the stepper worm geared motor 401 is vertically upward, and the disc 402 is horizontally mounted on it with screws. The disc 402 is supported by a bracket, and the upper surface of the disc 402 is not smooth. When the stepper worm geared motor 401 rotates, it drives the disc 402 to rotate, and the aggregate can rotate with the disc 402. The annular cover 403 is made of iron and is annularly fitted around the disc 402. It does not rotate with the disc 402 and is responsible for preventing the aggregate from flying out without affecting the rotation of the disc 402. The limiting ring 405 is annular iron material and is installed in the center of the disc 402, concentric with the disc 402. It limits the aggregate entering the disc 402 and controls the position of the aggregate. Three cameras 406 are evenly mounted on the upper part of the annular cover 403 to capture images of the aggregate inside the disc 402. The annular cover 403 has an opening, one side of which is connected to a discharge gate 407 via a hinge. The size of the discharge gate 407 is adapted to the opening. Ball bearings are installed at the bottom of the discharge gate 407 on the upper edge of the disc 402. The lower end of the discharge gate 407 is connected to a stepper motor 404. As the stepper motor 404 rotates, the discharge gate 407 opens and closes by rotating forward and backward. Dense PVC strip brushes are installed below the discharge gate 407.

[0050] The specific implementation principle of the detection section 400 is as follows: After the aggregate falls into the disc 402, the disc 402 is driven to rotate counterclockwise by the stepper worm gear reducer motor 401 (viewed from top to bottom). During the rotation, the aggregate always moves between the limiting ring 405 and the annular cover 403. At the same time, the camera 406 collects the aggregate pattern in real time and feeds it back to the receiving end. Different aggregates used in recycled concrete will affect the fluidity and density of the concrete. Good particle shape helps to improve the strength of concrete. Since the discharge gate 407 and the annular cover 403 of this invention do not rotate with the disc 402, the discharge gate 407 is stationary relative to the disc 402. After one round of aggregate image acquisition, in order to prevent the aggregate from being recycled, the discharge gate 407 and the disc 402 are linked. When the aggregate finally accumulates at the discharge gate 407, the stepper motor 404 rotates counterclockwise to drive the discharge gate 407 to sweep the aggregate out of the disc 402 and into the collection cylinder 408. This invention features a receiving cylinder 408 and a series of feeding cycles, enabling batch image collection and material discharge. This ensures that the collected data transmitted to MATLAB is not immediately overwritten by subsequent data, allowing for time intervals for analysis.

[0051] Example 2:

[0052] A method for acquiring images of aggregate size and shape in intelligent recycled concrete is provided, employing the intelligent image acquisition device for aggregate size and shape in recycled concrete described in Example 1. (See attached image.) Figures 1 to 7 This includes the following steps:

[0053] Step 1: The first stepper motor 101 and the second stepper motor 105 drive the roller 22 to rotate, thereby driving the track 23 to rotate and convey the aggregate into the sleeve 204 of the screening section 200.

[0054] Step 2: The aggregate particle size is controlled between 5mm and 40mm by the cooperation of the screen 201 and the cylindrical screen column 202. The aggregate rolls into the discharge cylinder 301 through the inclined cylindrical screen column 202. During this process, the dust in the sleeve 204 is removed by the blower 203. The aggregate smaller than 5mm is filtered out from the screen column 202 and blown out of the sleeve 204 by the blower 203 and collected by the first receiving trough.

[0055] Step 3: The extension and retraction of cylinder 302 will drive the opening and closing of C-shaped baffle 309 to complete the material discharge; the tension and compression sensor 303 detects the weight of the discharge cylinder 301 and sends a stop signal when a certain amount of aggregate is discharged from the discharge cylinder 301, so as to achieve precise aggregate discharge.

[0056] Step 4: After the aggregate falls into the disc 402, the disc 402 is rotated by the stepper worm gear reducer motor 401. During the rotation, the aggregate always moves between the limit ring 405 and the annular cover 403. At the same time, the camera 406 collects the aggregate pattern in real time and provides feedback.

[0057] Step 5: After one round of aggregate image acquisition, the discharge gate 407 and the disc 402 are linked. When the aggregate finally accumulates at the discharge gate 407, the stepper motor 404 rotates to drive the discharge gate 407 to sweep the aggregate out of the detection platform.

[0058] The above description is merely a specific embodiment of the present invention, and the scope of protection of the present invention is not limited thereto. Any transformations or substitutions that can be conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An intelligent image acquisition device for the particle size and shape of recycled concrete aggregate, characterized in that, The system includes a feeding section, a screening section, a discharging section, and a detection section arranged sequentially. The discharge end of the feeding section, the feed end of the screening section, the discharge end of the screening section, the feed end of the discharging section, the discharge end of the discharging section, and the feed end of the detection section are arranged from high to low. Recycled concrete aggregate is conveyed to the screening section through the feeding section. After the screening section screens out aggregates of a set particle size, they fall into the discharging section. The discharging section quantitatively discharges aggregates to the detection section, and the detection section collects aggregate patterns in real time in batches.

2. The intelligent recycled concrete aggregate particle size and shape image acquisition device according to claim 1, characterized in that, The feeding section includes a lifting frame, a roller assembly mounted on the lifting frame, and a track that wraps around the outer periphery of the roller assembly. The lifting frame includes an inclined section that slopes upward toward the screening section and a horizontal section connected to the inclined section. One end of the horizontal section facing the screening section is the discharge end, which is located above the feed end of the screening section. The roller assembly includes a plurality of rollers that are adapted to the size of the lifting frame and are installed at intervals along the lifting frame at an angle upward, with a track wrapping around their outer periphery.

3. The intelligent recycled concrete aggregate particle size and shape image acquisition device according to claim 1, characterized in that, The screening section includes a sleeve, a screen and a cylindrical screen column inclined from top to bottom inside the sleeve, and a blower located on one side of the sleeve; the screen and the cylindrical screen column are inclined in opposite directions but at the same angle; both the lowest point of the screen and the contact position with the sleeve have rectangular openings, and the lowest end of the cylindrical screen column and the contact position with the sleeve have rectangular openings extending from the lowest end of the cylindrical screen column and located above the feed end of the discharge section; the blower blades are located inside the sleeve and face the side of the cylindrical screen column.

4. The intelligent recycled concrete aggregate particle size and shape image acquisition device according to claim 3, characterized in that, The sleeve has a discharge port on the side away from the blower, and the lower end of the discharge port extends to the bottom of the sleeve and is equipped with a first receiving groove. The first receiving groove is used to collect the aggregate that has been filtered through the cylindrical screen column and blown out of the sleeve by the blower. A second receiving groove is provided at the rectangular opening at the lowest point of the screen where it contacts the sleeve. The second receiving groove is installed on the outside of the sleeve and is used to collect the aggregate that has not been filtered through the screen.

5. The intelligent recycled concrete aggregate particle size and shape image acquisition device according to claim 1, characterized in that, The feeding section includes a feeding cylinder support frame, a feeding cylinder mounted on the feeding cylinder support frame, and tension / compression sensors mounted on the feeding cylinder support frame. The feeding cylinder support frame is divided into a lower support and an upper support. Multiple tension / compression sensors are installed between the lower support and the upper support. The tension / compression sensors support the upper support of the feeding cylinder support frame. The feeding cylinder is mounted on the upper support.

6. The intelligent recycled concrete aggregate particle size and shape image acquisition device according to claim 5, characterized in that, The bottom of the discharge cylinder is equipped with an L-shaped iron plate assembly, which includes two mating C-shaped baffles. The two C-shaped baffles are equipped with meshing gears. The cylinder is mounted on the outer wall of the discharge cylinder via a bracket, and its output end is connected to a single-sided C-shaped baffle.

7. The intelligent recycled concrete aggregate particle size and shape image acquisition device according to claim 1, characterized in that, The detection part includes a disc, an annular cover located on the circumferential port of the disc, and a limiting ring concentric with the disc and located on the disc. The annular cover is equipped with multiple cameras at its upper end. The annular cover is fitted around the disc in a ring shape and does not rotate with the disc. The limiting ring is concentric with the disc and limits the aggregate entering the disc.

8. The intelligent recycled concrete aggregate particle size and shape image acquisition device according to claim 7, characterized in that, The bottom center of the disc is connected to the output end of a vertically arranged stepper worm gear motor. The upper surface of the disc is not smooth. When the stepper worm gear motor rotates, it will drive the disc to rotate, and the aggregate will follow the disc to rotate.

9. The intelligent recycled concrete aggregate particle size and shape image acquisition device according to claim 8, characterized in that, The annular cover is equipped with a feeding gate, and a stepper motor is installed at the lower end of the feeding gate. The feeding gate is opened and closed by the forward and reverse rotation of the stepper motor.

10. A method for acquiring images of aggregate size and shape in intelligent recycled concrete, using the intelligent image acquisition device for aggregate size and shape in intelligent recycled concrete as described in claims 1 to 9, characterized in that... Includes the following steps: Step 1: The rotation of the rollers drives the track to rotate, conveying the aggregate into the sleeve of the screening section; Step 2: By cooperating with the screen and the cylindrical screen column, the aggregate particle size is controlled within a certain range. The screened aggregate rolls into the discharge cylinder through the inclined cylindrical screen column. During this process, the dust in the sleeve is removed by the blower, and the aggregate screened by the cylindrical screen column is blown out of the sleeve by the blower. Step 3: The extension and retraction of the cylinder will drive the opening and closing of the C-shaped baffle to complete the feeding of material from the feeding cylinder; the tension and compression sensor detects the weight of the feeding cylinder and sends a stop signal when the feeding cylinder has discharged a set amount of aggregate; Step 4: After the aggregate falls into the disc, the aggregate moves between the limiting ring and the annular cover as the disc rotates. At the same time, the camera captures the aggregate pattern in real time and provides feedback. Step 5: After the first round of aggregate image acquisition, the aggregate is finally accumulated at the discharge gate through the linkage of the discharge gate and the disc. At this time, the discharge gate rotates to sweep the aggregate out of the disc and collect it into the receiving cylinder.

Images