Intelligent aggregate online monitoring asphalt concrete crushing and stripping equipment

Abstract

The application discloses a kind of intelligent aggregate online monitoring asphalt concrete broken stripping equipment, including hopper, tooth roll type flexible crusher, belt conveyor, vibrating screen, intelligent aggregate storage and broken stripping machine, the hopper is connected with tooth roll type flexible crusher by belt conveyor, tooth roll type flexible crusher is connected with broken stripping machine by belt conveyor, broken stripping machine is connected with vibrating screen by belt conveyor, intelligent aggregate storage is connected with tooth roll type flexible crusher and broken stripping machine respectively by belt conveyor.The application can effectively nondestructive broken stripping of aggregate and asphalt in old road concrete, screen different gradation aggregates, recycle all gradation aggregates, and is suitable for engineering machinery technical field.

Description

Technical Field

[0001] This invention belongs to the field of engineering equipment technology, specifically, it relates to an intelligent aggregate online monitoring asphalt concrete crushing and stripping device. Background Technology

[0002] During the recycling process, after secondary crushing, the materials obtained from old asphalt aggregates still contain a large amount of asphalt mortar called "black aggregate," which is an agglomeration of small aggregates and old asphalt. This agglomeration reduces the contact area between the recycling agent and the old asphalt, and also affects the contact area between the old aggregate and the new asphalt. As a result, the new asphalt cannot fully coat the old material, and the old and new materials cannot be effectively combined, thus failing to meet the requirements for direct recycling. Summary of the Invention

[0003] This invention provides an intelligent online monitoring device for asphalt concrete crushing and stripping, which solves the problem of not being able to preserve the original shape of aggregates during the crushing process of waste asphalt concrete.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] An intelligent aggregate online monitoring asphalt concrete crushing and stripping device includes a feeding hopper, a toothed roller flexible crusher, a belt conveyor, a vibrating screen, an intelligent aggregate storage device, and a crushing and stripping machine. The feeding hopper is connected to the toothed roller flexible crusher via the belt conveyor, the toothed roller flexible crusher is connected to the crushing and stripping machine via the belt conveyor, the crushing and stripping machine is connected to the vibrating screen via the belt conveyor, and the intelligent aggregate storage device is connected to both the toothed roller flexible crusher and the crushing and stripping machine via belt conveyors.

[0006] Furthermore, the crushing and stripping machine includes a base, a rotor, a drive mechanism, and a housing. The housing is located on top of the base, the rotor is located inside the housing, and the drive mechanism is located at one end of the base and is connected to the rotor for transmission. A feed inlet is provided at the upper part of one end of the housing, and a discharge outlet is provided at the lower part of the other end. The rotor includes a main shaft and a stripping unit. The stripping unit is rotatably installed inside the housing via the main shaft and a bearing assembly. The stripping unit includes several stripping rods and lifting plates for striking and stripping asphalt and stone. The several stripping rods are spirally arranged along the axial direction of the main shaft, and the lifting plates are spaced apart at the top of the stripping rods and inclined relative to the axis of the main shaft.

[0007] Furthermore, a high-definition infrared imager is installed above the belt of the belt conveyor, and a flattening and shaping mechanism is set on the belt. The intelligent aggregate storage device is divided into two layers: the upper layer contains new material and the lower layer contains recycled material after crushing. The upper layer is connected to the toothed roller flexible crusher and the crushing and stripping machine respectively through the belt conveyor, and the lower layer is connected to the crushing and stripping machine through the belt conveyor. The intelligent aggregate storage device stores intelligent aggregate, and the surface of the intelligent aggregate is coated with fluorescent material.

[0008] Furthermore, the intelligent aggregate has a small block structure, similar to the shape of traditional aggregate. Sensors and data processing devices can be embedded in the block structure of the intelligent aggregate to achieve real-time monitoring and control. The sensors of the intelligent aggregate can monitor the crushing pressure of the toothed roller flexible crusher and the crushing force and grinding rate inside the crusher and stripper during the asphalt concrete crushing process in real time. These data can be transmitted to the control center wirelessly so that operators can adjust the equipment operating parameters in a timely manner.

[0009] Furthermore, the stripping rod has uniformly distributed protrusions on its sidewall for stripping asphalt and stone.

[0010] Furthermore, the lifting plate is made of brown corundum, the stripping rod is made of wear-resistant alloy steel, and the surface of the lifting plate is provided with a corrugated texture structure.

[0011] Furthermore, the drive mechanism includes a drive motor and a belt drive assembly. The drive motor is fixed on the machine base and is connected to the main shaft via the belt drive assembly.

[0012] Furthermore, the drive motor has a power of 200kW and a speed of 400r / min after being reduced by a reducer.

[0013] Furthermore, a high-pressure spraying device is provided around the perimeter of the housing. The high-pressure spraying device includes a main spraying pipe and several branch spraying pipes. One end of each branch spraying pipe is connected to the main spraying pipe, and the other end extends into the housing and is equipped with a nozzle.

[0014] Furthermore, the shell is a cylindrical structure, horizontally mounted on the base, and a particle flow channel for the material is formed between the shell and the rotor. A toothed liner is installed on the inner wall of the shell.

[0015] Furthermore, the main shaft is a hollow shaft structure with a rotary joint installed at the shaft end and high-pressure nozzles mounted on the shaft. During the crushing and stripping process, water is circulated and sprayed to cool the shaft while the high-pressure water spray also assists in the crushing. The nozzles are set at a specific angle so that some nozzles can flush the bottom of the cavity, preventing asphalt film from accumulating between the liner teeth and becoming impossible to clean. The drive motor uses frequency conversion control.

[0016] Furthermore, the main spray pipe and the branch spray pipe are equipped with flow meters, pressure gauges and shut-off valves, and the housing is equipped with observation windows.

[0017] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0018] 1. When using a crusher to crush intelligent aggregate (RAP aggregate), the entire crushing process involves several key steps to ensure effective separation between the aggregate and asphalt.

[0019] Free Fall and Initial Impact: The intelligent aggregate (RAP aggregate) is conveyed by a belt to the top feed inlet of the crusher and enters the crusher chamber in a free fall manner. During this process, the aggregate gains significant kinetic energy. The aggregate comes into contact with the mixing blades inside the chamber, resulting in an initial impact that causes the aggregate to scatter in different directions. This impact not only increases the kinetic energy of the aggregate but also begins to disrupt the bonding forces between the aggregates, especially with the asphalt film.

[0020] Accumulation of kinetic energy and breakdown of adhesive forces: During the crushing process, most of the mechanical energy is converted into the kinetic energy of the aggregates, enabling them to move freely at high speed within the cavity. Only a small portion of the energy is specifically used to break the adhesive forces between aggregates and between aggregates and the asphalt film. This breakdown is a gradual process, requiring multiple impacts and frictions to achieve complete separation.

[0021] Mixing and redistribution: As the aggregate falls to the bottom of the chamber, the lifting plates of the mixing blades scoop it up and redistribute it. This not only ensures the free distribution of the aggregate within the chamber but also causes it to collide with the toothed liners on the chamber. Simultaneously, the continuous impact of the mixing blades further promotes the interaction between the aggregates, accelerating the separation of bonded aggregates.

[0022] Friction and Asphalt Stripping: Under the action of agitation, continuous friction occurs between the aggregates located at the bottom of the cavity. This friction causes the asphalt film on the surface of the aggregates to peel off. Due to the viscous properties of asphalt, continuous friction and impact will cause the asphalt to gradually peel off from the surface of the aggregates.

[0023] Through the above steps, the crusher effectively separates aggregate from asphalt in intelligent aggregate (RAP aggregate), improving the recycling rate.

[0024] 2. Intelligent aggregates have the following functions in the crushing process of waste asphalt concrete:

[0025] Real-time feedback and intelligent decision-making: The intelligent aggregate's built-in high-sensitivity sensors can monitor various physical parameters during the crushing process in real time, such as pressure, speed, and temperature. This data not only provides operators with intuitive feedback on the working status but is also transmitted to the control center in real time via wireless transmission technology. The control center uses advanced data processing technologies and algorithms to perform in-depth analysis and mining of this data, thereby achieving intelligent decision-making and optimization of the crushing process.

[0026] Dynamic adjustment and adaptive control: Based on real-time feedback data from intelligent aggregates, the control center can dynamically adjust the operating parameters of the crushing equipment. For example, based on changes in aggregate integrity, it automatically adjusts the parameters of the toothed roller gap, motor frequency, or water jet to ensure the crushing process is always in optimal condition. This adaptive control strategy not only improves crushing efficiency but also significantly reduces operational difficulty and the possibility of human error.

[0027] Data-driven preventative maintenance: The vast amounts of real-time data collected by the smart aggregate system also provide strong support for preventative maintenance of the equipment. Through long-term tracking and analysis of this data, potential equipment failures and wear can be predicted, allowing for proactive maintenance and replacement, extending equipment lifespan, and reducing maintenance costs.

[0028] Reduced energy consumption: The application of smart aggregates not only improves the efficiency and quality of the crushing process, but also reduces unnecessary energy consumption by optimizing crushing parameters.

[0029] 3. During the crushing and stripping process, intelligent aggregates (RAP aggregates) will collide and rub against each other, generating heat. The difference in specific heat capacity between asphalt and aggregates will cause a temperature difference between them. By observing the shape of the aggregates with an infrared imager, individual aggregates or bonded aggregates can be distinguished and sent to the control center for intelligent analysis. Bonded aggregates are then removed for secondary crushing, reducing the false aggregate rate.

[0030] 4. This invention differs from existing intelligent aggregate (RAP aggregate) recycling equipment. This invention can regenerate aggregates without damaging their shape. Aggregates recycled by this equipment can be regarded as new aggregates and used again in road paving. The aggregate recycling rate can reach 93%, which can effectively reuse resources and reduce stone mining. Attached Figure Description

[0031] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0032] In the attached diagram:

[0033] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of the crushing and stripping machine structure according to an embodiment of the present invention;

[0035] Figure 3 This is a schematic diagram of the rotor structure in an embodiment of the present invention;

[0036] Figure 4 This is a three-dimensional structural diagram of the rotor in an embodiment of the present invention;

[0037] Figure 5 This is a structural block diagram of the smart aggregate in an embodiment of the present invention.

[0038] Components marked: 1-Toothed roller flexible crusher, 2-Crusher and stripper, 3-Belt conveyor, 4-Feeding hopper, 5-Loader, 6-Vibrating screen, 7-Turbidity / suspended solids online analyzer, 8-Wastewater treatment equipment, 9-Intelligent aggregate storage device;

[0039] 20-Base, 21-Drive mechanism, 22-Feed inlet, 23-Main spray pipe, 24-Branch spray pipe, 25-Stop valve, 26-Observation window, 27-Housing, 28-Bearing assembly, 29-Rotor, 290-Main shaft, 291-Peeling rod, 292-Lifting plate. Detailed Implementation

[0040] The preferred embodiments of the present invention will now be described with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustrative and explanatory purposes only and are not intended to limit the scope of the invention.

[0041] This invention discloses an intelligent online monitoring device for asphalt concrete crushing and stripping, such as... Figure 1 As shown, the system includes a feeding hopper 4, a toothed roller flexible crusher 1, a belt conveyor 3, a vibrating screen 6, an intelligent aggregate storage device 9, and a crushing and stripping machine 32. The feeding hopper 4 is connected to the toothed roller flexible crusher 1 via the belt conveyor 3. The toothed roller flexible crusher 1 is connected to the crushing and stripping machine 32 via the belt conveyor 3. The crushing and stripping machine 32 is connected to the vibrating screen 6 via the belt conveyor 3. The intelligent aggregate storage device 9 is connected to both the toothed roller flexible crusher 1 and the crushing and stripping machine 32 via the belt conveyor 3.

[0042] In one specific embodiment of the present invention, a high-definition infrared imager is installed above the belt of the belt conveyor 3, and a flattening and shaping mechanism is also provided on the belt. The intelligent aggregate storage device 9 is divided into two layers: the upper layer contains new material, and the lower layer contains recycled material after crushing. The upper layer is connected to the toothed roller flexible crusher 1 and the crushing and stripping machine 32 via the belt conveyor 3, and the lower layer is connected to the crushing and stripping machine 32 via the belt conveyor 3. The surface of the intelligent aggregate is coated with fluorescent material.

[0043] A high-definition infrared imager is installed above the belt of belt conveyor 3. During the crushing and stripping process of asphalt concrete, collisions and friction will occur, which will generate heat. The difference in specific heat capacity between asphalt and aggregate will cause a temperature difference between them. It is because of the existence of temperature difference that the infrared imager can observe the shape of aggregate, and can distinguish individual aggregates or bonded aggregates. The photos of suspected bonded aggregates are sent to the central control system for intelligent analysis. The crushed material with more bonded aggregates is returned for secondary crushing. At the same time, the operating status of the equipment is analyzed in combination with intelligent aggregate monitoring parameters.

[0044] Specifically, the intelligent aggregate storage device stores intelligent aggregate. The structural block diagram of the intelligent aggregate is as follows: Figure 5 As shown, the detailed structure of the smart aggregate and its detection method can be found in application number CN202311166896.6, entitled "A Wireless Smart Aggregate for Real-Time Temperature Monitoring of Asphalt Pavement and its Detection Method", which will not be elaborated here.

[0045] Meanwhile, a flattening and shaping mechanism is installed on the belt, which can adopt a scraper or limiting plate structure to ensure that the recycled material is distributed in a single layer on the belt in an orderly manner, thus facilitating infrared imaging and analysis. Additionally, a distribution hopper is installed at the end of the belt to separate aggregates with low crushing rates and return them to the crushing and stripping equipment for secondary crushing.

[0046] The intelligent aggregate storage unit 9 is divided into two layers: the upper layer contains new material, and the lower layer contains recycled material after crushing. When the aggregate integrity rate decreases before or during the crushing of new graded pavement, intelligent aggregate can be added to the crusher / stripper 32 and the toothed roller flexible crusher 1. The intelligent aggregate is embedded with sensors that can monitor the crushing force and abrasion rate of the aggregate within the crusher / stripper 32 in real time. By analyzing the real-time monitoring data, the operating parameters of the crusher / stripper, such as the motor frequency, and the pressure of the water jet inside the equipment, can be adjusted to improve the abrasion rate of the aggregate while ensuring its integrity. Simultaneously, the pressure of the toothed roller flexible crusher during the crushing of waste material can be monitored in real time. When the pressure consistently exceeds the pressure required for crushing waste concrete, it indicates that the spacing between the toothed rollers is damaging the aggregate. The spacing between the toothed rollers can then be finely adjusted by controlling the hydraulic system of the toothed roller flexible crusher. The intelligent aggregate has a small block structure, similar in shape to traditional aggregates. Sensors and data processing devices are embedded within this block structure for real-time monitoring and control. The sensors can monitor the crushing pressure of the toothed roller flexible crusher and the crushing force and grinding rate inside the crusher during the asphalt concrete crushing process. This data can be wirelessly transmitted to the control center so that operators can adjust equipment operating parameters in a timely manner. The surface of the intelligent aggregate is coated with fluorescent material. Within the crusher 32, the intelligent aggregate is ground into individual aggregates and, like other aggregates, enters the conveyor belt for screening. Due to its fluorescent material, it can be identified and selected, then returned to the lower layer of the intelligent aggregate storage 9 for collection. Finally, after cleaning, testing, and repair, it is reprocessed into intelligent aggregate for reuse, achieving recycling.

[0047] During the crushing and stripping process, intelligent aggregates (RAP aggregates) undergo collisions and friction, generating heat. The difference in specific heat capacity between asphalt and aggregates leads to a temperature difference. By observing the aggregate morphology using an infrared imager, individual aggregates or bonded aggregates can be distinguished. This information is sent to the control center for intelligent analysis, where bonded aggregates are removed for secondary crushing, reducing the rate of false aggregates. Specifically, the removal process uses a vibrating screen for separation. Bonded aggregates are screened out and then subjected to secondary crushing, while finer aggregates are screened and fall below the vibrating screen for recycling.

[0048] As a specific embodiment of the present invention, the crushing and stripping machine 32 is a flexible crushing device, including a main shaft and a housing. The main shaft is rotatably mounted inside the stirring chamber of the housing through a bearing assembly. The main shaft is equipped with stirring blades, and the inner wall of the housing is equipped with toothed liners.

[0049] After being crushed by the toothed roller flexible crusher 1, the aggregate enters the shell and is in a turbulent state under the flexible impact of the stirring blades inside the shell. At the same time, there is abrasive action between the aggregate and the shell, and between the aggregates themselves, which ultimately separates the stone from the asphalt and breaks the aggregate into individual aggregates.

[0050] As a specific embodiment of the present invention, RAP (recycled asphalt mixture) with a gradation of 0-3mm, 3-5mm, 5-10mm, and 10-15mm is taken as an example.

[0051] Concrete waste collected from the old road surface is shoveled onto the feeding hopper 4 by a loader 5, and then conveyed to the toothed roller flexible crusher 1 by a belt conveyor 3. The gap between the two crushing rollers 16 is set to 18mm (slightly larger than the maximum aggregate size). After being crushed by the crushing rollers 16, the waste is broken down from large pieces into smaller pieces, which are then conveyed to the primary vibrating screen 6 by the belt conveyor 3. The primary vibrating screen 6 has two layers of screens: the upper screen has a mesh size of 25mm, and the lower screen has a mesh size of 3mm, which can separate the smaller pieces into three grades. The powder material of 0-3mm enters the finished product stockpile via the belt conveyor 3. The larger pieces of the upper layer of smaller pieces (greater than 25mm) are returned to the feeding hopper 4 via the belt conveyor 3 for secondary crushing. The smaller pieces between 3mm and 25mm enter the crushing and stripping machine 32 for flexible crushing. At the same time, intelligent aggregate enters the crusher via the belt conveyor 3, and the crushing force and grinding rate of the crusher are monitored in real time. The aggregate crushed and stripped by the crusher 32 is conveyed by belt to the secondary vibrating screen 6. The secondary vibrating screen 6 has three layers of screens: the lower screen has a mesh size of 3mm, the middle screen has a mesh size of 5mm, and the upper screen has a mesh size of 10mm. This separates the crushed aggregate into four grades. The 0-3mm powder is conveyed to the finished product stockpile via belt, as are the other three grades of aggregate. The difference is that the 3-5mm, 5-10mm, and 10-15mm finished product stockpiles are equipped with a leveling and shaping mechanism and a high-definition infrared imager. The crushed aggregate is leveled and shaped into a single layer by the leveling and shaping mechanism on the belt. The high-definition infrared imager photographs the aggregate and uploads the images to the central control system for analysis. Individual aggregates are sent to the finished product stockpile, while cohesive aggregates are removed and conveyed back to the crusher 32 for further crushing. Intelligent aggregate particles larger than 15mm are screened into the 0-15mm range. After being identified by the central control system, they are rejected by the rejection system and conveyed to the intelligent aggregate storage recycling layer. By uniformly analyzing the rejection rate of binder materials, as well as the crushing force and abrasion rate data of the intelligent aggregate conveying process, the motor of the crusher / stripper 32 is adjusted until the ideal crushing state is achieved. Once the ideal state is reached, the intelligent aggregate can stop participating in the crushing process.

[0052] As a specific embodiment of the present invention, such as Figure 2As shown, the crushing and stripping machine 32 includes a base 20, a rotor 29, a drive mechanism 21, and a housing 27. The housing 27 is located on top of the base 20, the rotor 29 is located inside the housing 27, and the drive mechanism 21 is located at one end of the base 20 and is connected to the rotor 29 for transmission. One end of the housing 27 has a feed inlet 22, and the other end has a discharge outlet. The rotor 29 includes a main shaft 290 and a stripping unit. The stripping unit is rotatably mounted inside the housing 27 via the main shaft 290 and a bearing assembly 28. The housing 27 has a cylindrical structure and is horizontally arranged on the base 20. A particle flow channel for materials is formed between the housing 27 and the rotor 29, and a toothed liner is installed on the inner wall of the housing. The "black stone" (stone particles formed after the old concrete of the road is crushed and coated with asphalt) enters the housing 27 through the feed inlet 22. The drive mechanism 21 drives the main shaft 290 to rotate, and the main shaft 290 drives the stripping unit to rotate. The stripping bar and lifting plate of the stripping unit knead, knock and impact the "black stone" to separate the small stones and the agglomerates formed by the old asphalt, so as to achieve the effect of "clear separation of particles" and the purpose of direct recycling.

[0053] The main shaft of the crusher 32 is a hollow shaft structure with a rotary joint installed at the shaft head. The rotary joint is connected to the water supply pipe. High-pressure nozzles are installed on the shaft. During the crushing and stripping process, water is passed through and sprayed, which can simultaneously cool the shaft. High-pressure water spray can assist in crushing. The nozzles are set at a certain angle so that some nozzles can rinse the bottom of the cavity, preventing the asphalt film from accumulating between the teeth of the toothed liner on the inner wall of the shell and making it impossible to clean. The drive motor adopts frequency conversion control.

[0054] During aggregate crushing and stripping operations, water can be circulated through the spindle shaft, and high-pressure water spraying can then assist in crushing within the mixing chamber, preventing the stripped asphalt film from adhering. The nozzles are angled so that some nozzles can flush the bottom of the chamber wall, preventing the asphalt film from accumulating between the toothed liners and becoming difficult to clean. High-pressure nozzles are also installed on the inner wall of the crusher's 32 chamber to assist in aggregate crushing during the stripping process. The cleaned wastewater is discharged through a wastewater pipeline and then through an online turbidity / suspended solids analyzer 7 to wastewater treatment equipment 8 for purification, achieving water recycling.

[0055] As a specific embodiment of the present invention, such as Figure 3 , Figure 4As shown, the stripping unit includes several stripping rods 291 for striking and separating asphalt from aggregate. These stripping rods 291 are spirally arranged along the axial direction of the main shaft 290. Adjacent stripping rods 291 are spaced at equal intervals and angles. The "black aggregate" enters the housing 27 through the feed inlet 22. Because the stripping rods 291 are arranged along the axial direction of the main shaft 290, their spiral trajectory provides the same spiral propulsion function as the auger conveyor. Simultaneously, the stripping rods 291 rotate at high speed with the main shaft 290, continuously striking and stripping the aggregate, thus separating the small aggregates bonded together by the asphalt, achieving the purpose of separating the asphalt from the small aggregates.

[0056] In one specific embodiment of the present invention, the stripping rod 291 has uniformly distributed protrusions on its sidewall for stripping asphalt and aggregate. Preferably, the protrusions on the stripping rod 291 are sharp, forming a serrated structure. By providing this protruding structure, the collision area when the stripping rod 291 contacts the aggregate can be reduced. On the one hand, this prevents the stripping rod 291 from crushing the aggregate and causing changes in its gradation, ensuring the integrity of the raw materials. On the other hand, the sharp tip of the protrusion penetrates into the gaps and textures of the aggregate, allowing the stripping rod 291 to better impact and strip the aggregate, while also achieving a non-adhesive crushing effect for fine materials.

[0057] As a specific embodiment of the present invention, such as Figure 4 As shown, the stripping unit also includes several lifting plates 292, which are spaced apart at the top of the stripping rods 291 and inclined relative to the axis of the main shaft 290. The lifting plates 292 are spaced apart at the top of the stripping rods 291, meaning one lifting plate 292 is provided for every one or more stripping rods 291. Specifically, in this embodiment, two lifting plates 292 are provided every 360 degrees in the circumferential direction. By providing the lifting plates 292, on the one hand, compared to simply providing the stripping rods 291, the material can be better propelled and conveyed forward; on the other hand, the lifting plates 292 generate a greater centrifugal force on the material, lifting it up and increasing the squeezing, collision, friction, and shearing effects between materials, between materials and the inner wall of the shell 27, and between materials and the stripping rods 291, thus stripping the stone from the asphalt.

[0058] In one specific embodiment of the present invention, the lifting plate 292 is made of brown corundum, and its surface has a washboard-like texture. This allows for the simultaneous forward lifting and kneading of the "black stone," further increasing the tearing force between the stone and the asphalt film, ultimately separating the stone and asphalt completely, achieving a "clearly separated grain" effect.

[0059] As a specific embodiment of the present invention, such as Figure 2 As shown, the drive mechanism 21 includes a drive motor and a belt drive assembly. The drive motor is fixed on the base 20 and is connected to the main shaft 290 via the belt drive assembly. The drive motor has a power of 200kW and a rated speed of 400r / min. The drive mechanism 21 provides power for the rotation of the main shaft 290 and the stripping unit. The motor is a variable frequency motor, which can adjust the speed of the rotor 290 according to actual needs. Changing the motor speed can change the stripping speed and stripping effect of the material.

[0060] As a specific embodiment of the present invention, such as Figure 2 As shown, a high-pressure spraying device is provided around the perimeter of the housing 27. The high-pressure spraying device includes a main spray pipe 23 and several branch spray pipes 24. The main spray pipes 23 are fixed to the housing 27, and the branch spray pipes 24 are evenly distributed on the top of the housing 27. One end of each branch spray pipe is connected to the main spray pipe 23, and the other end extends into the housing 27 and is equipped with a high-pressure nozzle. Shut-off valves 25 are provided on the main spray pipe 23 and the branch spray pipes 24, and an observation window 26 is provided on the housing 27. By setting up the high-pressure spraying device, while the stripping unit is performing assisted stripping of stone and asphalt, it also achieves cooling and dust removal effects.

[0061] Specifically, the "black stone" stripper provided by this invention is driven by a 200kW motor. The motor drives the rotor 29 to rotate via a belt 120 and a pulley. The rated speed of the rotor 29 is 400 r / min, and its hourly processing capacity is 100 tons. The "black stone" particle flow enters through the feed inlet 22. The rotor 29 provides a spiral propulsion force that propels the "black stone" particles forward. During the movement, the particle flow relies on the squeezing, collision, friction, and shearing actions between the "black stone" particles, between the "black stone" particles and the inner wall of the shell 27, and between the "black stone" particles and the lifting plates 292 and the stripping rods 291 to tear the asphalt film, separating the stone from the asphalt and achieving a "clearly separated particle" effect. The working principle of the "black stone" stripper is as follows:

[0062] During operation, the "black stone" is subjected to the action of the rotor, which generates centrifugal force, causing the particles to occupy the particle flow channel between the rotor and the inner wall of the shell of the stripper. Stripping rods are distributed on the main shaft of the rotor, and lifting plates are spaced on the stripping rods. The stripping rods are arranged along a spiral line on the surface of the main shaft. The stripping rods and lifting plates simultaneously provide the spiral driving force required for the axial transport of the "black stone" particles, propelling the "black stone" forward. At the same time, the kneading and scraping action between the lifting plates and the inner wall of the shell is used to strip the "black stone" particles.

[0063] Specifically, the "black stone" stripping machine adopts the "multi-element gradual pressure rotary stripping" theory, combining mechanical cutting force with dynamic principles. During the stripping process, the particles are subjected to the impact and shearing mechanical force of the protrusions on the stripping rod. At the same time, the surface of the "black stone" is subjected to the gradually increasing kneading and scraping action of the textured lifting plate, realizing the rotary gradual pressure stripping of the "black stone". This causes displacement between the stone and the asphalt film, further generating cracks until the stone is stripped.

[0064] In summary, this invention solves the problem that the "black stone" obtained after secondary crushing in the prior art cannot meet the requirements for direct recycling. It can use a stripping unit to knead, knock, and impact the "black stone" to separate the aggregates formed by small stones and old asphalt, achieving a "clearly separated grain" effect and the purpose of direct recycling. It can effectively and non-destructively crush and separate aggregates and asphalt in old road concrete, screen and archive aggregates of different gradations, and reuse all gradations of aggregates. It is applicable to the fields of engineering machinery technology and engineering equipment technology.

[0065] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An intelligent aggregate online monitoring asphalt concrete crushing and stripping device, characterized in that: The system includes a feeding hopper, a toothed roller flexible crusher, a belt conveyor, a vibrating screen, an intelligent aggregate storage device, and a crushing and stripping machine. The feeding hopper is connected to the toothed roller flexible crusher via a belt conveyor. The toothed roller flexible crusher is connected to the crushing and stripping machine via a belt conveyor. The crushing and stripping machine is connected to the vibrating screen via a belt conveyor. The intelligent aggregate storage device is connected to both the toothed roller flexible crusher and the crushing and stripping machine via belt conveyors. The crushing and stripping machine includes a base, a rotor, a drive mechanism, and a housing. The housing is located on top of the base, the rotor is located inside the housing, and the drive mechanism is located at one end of the base and is connected to the rotor for transmission. A feed inlet is located at the upper part of one end of the housing, and a discharge outlet is located at the lower part of the other end. The rotor includes a main shaft and a stripping unit. The stripping unit is rotatably mounted inside the housing via the main shaft and a bearing assembly. The stripping unit includes several stripping bars and lifting plates for striking and stripping asphalt and stone. The stripping bars are spirally arranged along the axial direction of the main shaft, and the lifting plates are spaced apart at the top of the stripping bars and inclined relative to the axis of the main shaft. The stripping rod has protrusions evenly distributed on its sidewall for stripping asphalt and stone. The lifting plate is made of brown corundum, and the peeling rod is made of wear-resistant alloy steel. The surface of the lifting plate has a corrugated texture structure.

2. The intelligent aggregate online monitoring asphalt concrete crushing and stripping equipment according to claim 1, characterized in that: A high-definition infrared imager is installed above the belt of the belt conveyor, and a flattening and shaping mechanism is set on the belt. The intelligent aggregate storage device is divided into two layers: the upper layer contains new material and the lower layer contains recycled material after crushing. The upper layer is connected to the toothed roller flexible crusher and the crushing and stripping machine through the belt conveyor, and the lower layer is connected to the crushing and stripping machine through the belt conveyor. The intelligent aggregate storage device stores intelligent aggregate, and the surface of the intelligent aggregate is coated with fluorescent material.

3. The intelligent aggregate online monitoring asphalt concrete crushing and stripping equipment according to claim 2, characterized in that: The intelligent aggregate has a small block structure, similar to the shape of traditional aggregate. Sensors and data processing devices are embedded in the block structure of the intelligent aggregate to achieve real-time monitoring and control. The sensors of the intelligent aggregate can monitor the crushing pressure of the toothed roller flexible crusher and the crushing force and grinding rate inside the crusher and stripper during the asphalt concrete crushing process in real time. This data can be transmitted to the control center wirelessly so that operators can adjust the equipment operating parameters in a timely manner.

4. The intelligent aggregate online monitoring asphalt concrete crushing and stripping equipment according to claim 1, characterized in that: The drive mechanism includes a drive motor and a belt drive assembly. The drive motor is fixed on the machine base and is connected to the main shaft via the belt drive assembly.

5. The intelligent aggregate online monitoring asphalt concrete crushing and stripping equipment according to claim 4, characterized in that: The drive motor has a power of 200kW and a speed of 400r / min after being reduced by a reducer.

6. The intelligent aggregate online monitoring asphalt concrete crushing and stripping equipment according to claim 2, characterized in that: The shell is surrounded by a high-pressure spraying device, which includes a main spraying pipe and several branch spraying pipes. One end of each branch spraying pipe is connected to the main spraying pipe, and the other end extends into the shell and is equipped with a nozzle.

7. The intelligent aggregate online monitoring asphalt concrete crushing and stripping equipment according to claim 1, characterized in that: The shell is a cylindrical structure, horizontally mounted on the base, and a particle flow channel for the material is formed between the shell and the rotor. A toothed liner is installed on the inner wall of the shell.

8. The intelligent aggregate online monitoring asphalt concrete crushing and stripping equipment according to claim 7, characterized in that: The main shaft is a hollow shaft structure with a rotary joint installed at the shaft head and a high-pressure nozzle installed on the shaft. During the crushing and stripping process, water is passed through and sprayed to cool the shaft at the same time. The high-pressure water spray can assist in crushing. The nozzle is set at a certain angle so that some nozzles can rinse the bottom of the cavity to prevent the asphalt film from accumulating between the teeth of the toothed liner on the inner wall of the shell and becoming impossible to clean. The drive motor adopts frequency conversion control.

9. The intelligent aggregate online monitoring asphalt concrete crushing and stripping equipment according to claim 6, characterized in that: The main spray pipe and spray branch pipe are equipped with flow meters, pressure gauges and shut-off valves, and the housing is equipped with observation windows.

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