Device and method for preparing asphalt pavement paving material

Abstract

The invention discloses an asphalt pavement paving material preparation device and method, and belongs to the technical field of pavement paving materials. Aiming at the problems of low metal impurity sorting efficiency and difficulty in residue cleaning in construction waste treatment, the device realizes construction waste conveying and pre-crushing through collaborative operation of the conveyor and the crusher, and a double-magnetic roller switching structure is matched with a material shifting block to improve the metal adsorption efficiency. The core improvement of the device comprises the following steps: 1) a rotating plate driving mechanism is arranged in a magnetic roller mounting seat, reverse lifting switching of double magnetic rollers is controlled through an electric push rod, and continuous sorting operation is ensured; the knocking assembly adopts a ratchet wheel and pawl driving structure and is matched with a tension spring to achieve periodic impact of a knocking plate, and attachments on the metal surface are effectively removed; and (3) the cleaning assembly drives a reciprocating screw through magnetic roller rotating power to drive a push plate to axially move to clean metal on the surface of the magnetic roller, and a special gap is formed between a protection frame and the magnetic roller to prevent clamping stagnation. The device can realize efficient separation and recovery of metals in the construction wastes, and improves the purity of regenerated materials.

Description

Technical Field

[0001] The invention belongs to the technical field of road paving materials and relates to a device and method for preparing asphalt road paving materials. Background Art

[0002] Amidst accelerating urbanization and large-scale infrastructure construction, asphalt pavement is widely used in road construction due to its significant advantages, including driving comfort, smoothness, noise reduction, and ease of maintenance. As construction scale expands, the demand for paving materials is growing exponentially, placing higher demands on material preparation technologies.

[0003] Construction waste, a large amount of waste generated during urban renewal and building demolition, primarily consists of waste concrete, bricks, and scrap metal. If not effectively treated, this waste not only occupies significant land resources but also causes serious pollution to the soil, water, and air. Converting construction waste into asphalt pavement materials through appropriate technical means not only reduces its volume, renders it harmless, and recycles it into a resource, alleviating environmental pressures, but also provides new raw materials for pavement materials, reducing reliance on natural aggregates and petroleum asphalt, offering significant economic, environmental, and social benefits.

[0004] However, in the process of using construction waste to prepare pavement materials, it is often necessary to face the problem of pre-treatment of metal impurities: the existing magnetic separation equipment can only perform simple adsorption, and the construction waste adhered to the metal surface is difficult to remove effectively, and still requires manual secondary cleaning; and the metal at the bottom layer is difficult to be adsorbed, resulting in reduced sorting efficiency.

[0005] Therefore, we propose a device and method for preparing asphalt pavement paving materials to solve the above-mentioned problems. Summary of the Invention

[0006] In view of this, the present invention provides an asphalt pavement paving material preparation device and method in order to solve the problem that the magnetic separation equipment can only perform simple adsorption during use, and the construction waste remaining on the metal cannot be cleaned, and manual cleaning is required later, which is time-consuming and labor-intensive, and the metal at the bottom of the construction waste cannot be adsorbed during the sorting process, thereby reducing the sorting effect.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] A device for preparing asphalt pavement paving materials, comprising:

[0009] Conveyor, used to transport construction waste;

[0010] A crusher, installed on the conveyor, is used to crush construction waste;

[0011] The mounting base is set on the top of one side of the conveyor, and one side is provided with:

[0012] Two magnetic rollers are switchably arranged on a mounting base for absorbing metals in construction waste;

[0013] The driving member is used to drive the magnetic roller to rotate. The outer surface of the magnetic roller is provided with a material-moving block to move the construction waste during the rotation process;

[0014] a knocking assembly, movably disposed on the top of the mounting base, for knocking the metal adsorbed on the magnetic roller to remove residue;

[0015] A cleaning component is provided on the magnetic roller and is used to clean the metal adsorbed on the surface of the magnetic roller;

[0016] Among them, continuous sorting operation is achieved by switching the working positions of the two magnetic rollers, and the knocking component cooperates with the cleaning component to complete the cleaning and recovery of metals.

[0017] As a further improvement of the above technical solution:

[0018] Two rectangular holes are provided on one side of the mounting seat, and a sliding block is provided in the rectangular hole for sliding movement. The magnetic roller is rotatably installed in the sliding block through a bearing; the switching assembly includes a rotating plate rotatably installed in the mounting seat, and waist-shaped holes adapted to the magnetic roller are provided at both ends of the rotating plate. The rotating plate is driven to rotate by an electric push rod on one side of the mounting seat, so that the two magnetic rollers are switched in the opposite direction of lifting and lowering.

[0019] The driving member includes a first motor installed outside the mounting seat. The first motor drives the magnetic roller to rotate through a synchronous wheel and a synchronous belt. The bearing in the rotating plate is interference-fitted at the output end of the first motor.

[0020] The knocking assembly includes: a support frame, which is movably arranged on the top of the mounting base; a second guide rod, which passes through the support frame, has a knocking plate at the bottom end and a top plate at the top end; a third motor, which is installed on the support frame through a fixing plate, and its output end cooperates with the top plate; a tension spring, which is sleeved on the second guide rod, and has its two ends respectively connected to the support frame and the top plate; wherein, after the third motor drives the top plate to rise, the tension spring pulls the knocking plate to quickly strike the metal surface.

[0021] The knocking assembly also includes: a driving plate, which is installed in the fixed plate through a bearing, and an extension rod is provided on one side to contact the top plate; a pawl plate, which is fixed on the other side of the driving plate; a ratchet wheel, which is installed at the output end of the third motor and cooperates with the pawl plate; wherein the ratchet wheel and the pawl plate cooperate to realize one-way transmission, and the extension rod pushes the top plate to rise.

[0022] The top of the mounting seat is provided with: two rotating seats; a first guide rod connecting the two rotating seats, and the support frame is slidably sleeved thereon; a first screw rod rotatably installed between the rotating seats and engaged with the support frame thread; a second motor drives the first screw rod to rotate to move the support frame.

[0023] The cleaning assembly includes: a push plate, which is slidably mounted on the outer wall of the magnetic roller; a protective frame and a rotating ring, which are welded to the outer wall of the magnetic roller; a reciprocating screw, which is rotatably installed in the protective frame and cooperates with the push plate through the slider and the spiral groove of the reciprocating screw; a connecting piece, which uses the rotating power of the magnetic roller to drive the reciprocating screw to rotate; wherein a gap is provided between the middle section of the protective frame and the magnetic roller for the push plate to pass through.

[0024] The connecting components include: a rotating disk, mounted on the outer wall of the magnetic roller via a bearing sleeve, with a guide plate welded to one side; a gear ring, fixed to the rotating disk; an electromagnetic clutch, mounted on the rotating ring, with its input end meshing with the gear ring via a second gear, and its output end connected to a reciprocating screw; and a first gear, fixed to the outer wall of the rotating disk, meshing with the rack on the mounting base. The support frame is L-shaped, with a clearance groove on its inner side that mates with the magnetic roller and supports the end of the magnetic roller.

[0025] A method for preparing asphalt pavement paving materials, applied to the above-mentioned asphalt pavement paving material preparation device, comprises the following steps:

[0026] S1. First, use a crusher to crush the construction waste and transport it through a conveyor;

[0027] S2. When the construction waste moves to the bottom of the magnetic roller, the magnetic force on the magnetic roller is used to absorb the metal in the construction waste;

[0028] S3. When the surface of one magnetic roller is full of metal, the electric push rod is activated to start the two magnetic rollers to move up and down in the opposite direction, and the other magnetic roller is used to continue adsorption and sorting;

[0029] S4, knocking the adsorbed metal with the knocking component to break the building body on the metal surface;

[0030] S5. Finally, the metal on the magnetic roller is cleaned by the push plate.

[0031] The beneficial effects of the present invention are:

[0032] 1. The asphalt pavement paving material preparation device disclosed in the present invention uses a jaw crusher structure to perform preliminary crushing of construction waste, breaking large pieces of construction waste into smaller particles, which facilitates subsequent metal separation processing, improves the processing efficiency of construction waste, and provides more uniform and easy-to-handle raw materials for the subsequent preparation of asphalt pavement paving materials;

[0033] 2. The present invention discloses an asphalt pavement paving material preparation device. By providing a magnetic roller with strong magnetism, it can effectively adsorb metal substances from construction waste, achieve precise metal separation, improve the purity and efficiency of metal recovery, and reduce the impact of metal impurities on the quality of asphalt pavement paving materials. The two magnetic rollers can be flexibly switched using a switching component. When the amount of metal adsorbed on the surface of one magnetic roller reaches a certain level, affecting the adsorption effect, the other magnetic roller can be quickly switched to the working position, and the magnetic roller that is full of metal can be switched to the cleaning position at the same time. This ensures the continuity and efficiency of metal separation, reduces equipment downtime for cleaning, and improves production efficiency.

[0034] 3. The present invention discloses a device for preparing asphalt pavement paving materials. The setting of the knocking assembly can effectively clean the residual metal structures adsorbed on the magnetic roller. The knocking plate is driven to rise by a motor, and then the tension of the tension spring is used to quickly lower the knocking plate to knock the metal. The knocking effect is further optimized by structures such as ratchet pawls, so that the residual structures on the metal can be fully removed, improving the thoroughness of metal cleaning and ensuring the subsequent adsorption effect of the magnetic roller. The support frame of the knocking assembly is movably set on the top of the mounting seat. The support frame can be slid in the horizontal direction by rotating the screw driven by the motor, thereby adjusting the position of the knocking assembly so that it can be used accurately with the two magnetic rollers. At the same time, it can support the magnetic rollers to meet the knocking requirements under different working conditions and improve the adaptability and flexibility of the device.

[0035] 4. In the asphalt pavement paving material preparation device disclosed in the present invention, the rotating disk is driven by the meshing of the first gear and the rack, and can automatically adjust the position of the guide plate during the lifting and lowering movement of the magnetic roller. This ensures that the guide plate flips upward when the magnetic roller moves downward, and flips downward when the magnetic roller moves upward. This better guides the cleaned metal so that it lands smoothly in the designated location, facilitating subsequent collection and processing, and improving the coordination and accuracy of the device's operation.

[0036] The present invention can efficiently and continuously convey and preliminarily crush construction waste through the coordinated operation of the conveyor and the crusher, which is beneficial to the subsequent metal separation. It also utilizes switchable magnetic rollers and material-dispensing blocks to effectively improve the metal adsorption efficiency and ensure sufficient metal separation. At the same time, the knocking component cooperates with the driving components and the tension spring structure to accurately and forcefully knock the adsorbed metal, effectively cleaning the residual building body. The cleaning component can automatically push the metal off the magnetic roller with the help of the rotating power of the magnetic roller and the electromagnetic clutch and other components to achieve efficient cleaning.

[0037] Other advantages, objects, and features of the present invention will be described in part in the following description and, in part, will be apparent to those skilled in the art upon examination of the following description or may be learned from practice of the present invention. The objects and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below with reference to the accompanying drawings, in which:

[0039] Figure 1 This is a schematic diagram of the three-dimensional structure of an asphalt pavement paving material preparation device of the present invention;

[0040] Figure 2 A schematic diagram of the three-dimensional structure of an asphalt pavement paving material preparation device according to the present invention from another perspective;

[0041] Figure 3 This is a schematic diagram of the mounting structure of a mounting base and a magnetic roller of an asphalt pavement paving material preparation device according to the present invention;

[0042] Figure 4 This is a schematic cross-sectional view of a mounting base of an asphalt pavement paving material preparation device according to the present invention;

[0043] Figure 5 This is a schematic structural diagram of a striking component of an asphalt pavement paving material preparation device according to the present invention;

[0044] Figure 6 This is a schematic diagram of the cross-sectional structure of a magnetic roller of an asphalt pavement paving material preparation device of the present invention;

[0045] Figure 7 for Figure 6 A schematic diagram of the enlarged structure of the middle part A;

[0046] Figure 8 This is a schematic structural diagram of a cleaning ring of an asphalt pavement paving material preparation device according to the present invention;

[0047] Figure 9 This is a schematic diagram of the drive disc and third motor structure of an asphalt pavement paving material preparation device of the present invention.

[0048] Reference numerals: 1, conveyor; 2, crusher; 3, mounting seat; 4, magnetic roller; 5, guide plate; 6, knocking assembly; 7, first motor; 8, rectangular hole; 9, protective frame; 10, material-digging block; 11, sliding block; 12, first gear; 13, rack; 14, gap; 15, rotating plate; 16, waist-shaped hole; 17, synchronous wheel; 18, synchronous belt; 19, electric push rod; 20, rotating seat; 21, first guide rod; 22 , first screw; 23, second motor; 24, support frame; 25, fixed plate; 26, third motor; 27, second guide rod; 28, tension spring; 29, top plate; 30, knocking plate; 31, give way groove; 32, rotating disk; 33, rotating ring; 34, reciprocating screw; 36, push plate; 37, electromagnetic clutch; 38, second gear; 39, gear ring; 40, drive disk; 41, extension rod; 42, pawl disk; 43, ratchet. DETAILED DESCRIPTION

[0049] The following describes the embodiments of the present invention by means of specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0050] Among them, the accompanying drawings are only for illustrative purposes and represent only schematic diagrams rather than actual pictures, and should not be understood as limiting the present invention. In order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the dimensions of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the accompanying drawings.

[0051] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc. indicating directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0052] Example 1

[0053] like Figures 1-9 As shown, a device for preparing asphalt pavement paving materials includes a conveyor 1, a crusher 2, a mounting seat 3, a magnetic roller 4, a driving member, a knocking component 6, and a cleaning component.

[0054] Conveyor 1, serving as a conveyor for construction waste, utilizes a conventional belt conveyor structure. A motor drives the belt in a circular motion, enabling continuous conveyance of the waste. Crusher 2, mounted on conveyor 1, is specifically installed above the conveyor belt. It utilizes a jaw crusher structure, using the relative motion of two crushing teeth to initially crush the waste, breaking large pieces into smaller particles for subsequent metal separation.

[0055] The mounting base 3 is arranged on the top of one side of the conveyor 1 to provide a mounting base for the metal separation and cleaning components. The mounting base 3 is a rectangular parallelepiped frame structure as a whole, which is welded with steel to ensure sufficient strength and stability.

[0056] One side of the mounting base 3 defines two rectangular holes 8, within which slide blocks 11 slide. These blocks are rectangular parallelepiped structures, sized to fit within the holes 8 and capable of sliding up and down within them. The magnetic roller 4 is rotatably mounted within these blocks via bearings. The cylindrical structure possesses a strong magnetic surface, capable of attracting metals found in construction waste.

[0057] A switching assembly is housed within the mounting base 3, used to switch between the two magnetic rollers 4. This switching assembly comprises a rotating plate 15, rotatably mounted within the mounting base 3 via bearings. This plate 15 is a rectangular structure with waist-shaped holes 16 at each end, adapted to accommodate the magnetic rollers 4. As the rotating plate 15 rotates, the sidewalls of the waist-shaped holes 16 push the magnetic rollers 4 up and down. A motorized push rod 19 is connected to one side of the mounting base 3 via a rotating shaft. The output end of the push rod 19 is connected to the rotating plate 15 via the rotating shaft. The retracting and retracting motion of the push rod 19 utilizes the principle of leverage to drive the rotating plate 15 to rotate around its bearing center, thereby shifting the two magnetic rollers 4 up and down. When the amount of metal adsorbed on the surface of one magnetic roller 4 reaches a certain level, affecting its adsorption efficiency, the switching assembly switches the other magnetic roller 4 to its operating position, while the magnetic roller 4 with the metal adsorbed is simultaneously switched to its cleaning position.

[0058] Magnetic roller 4 is equipped with an inclined guide plate 5. This curved plate has a width and length that match the diameter and length of the magnetic roller 4 after metal adsorption, and one end is tilted toward the outer end of the magnetic roller 4. When cleaning metal from the surface of the magnetic roller 4, the metal adsorbed on the surface of the magnetic roller 4 moves along the inclined direction of the guide plate 5 under the action of the guide plate 5, facilitating subsequent collection and processing.

[0059] The guide plate 5 can be: (1) an arc-shaped guide plate. The guide plate 5 is a fixed arc plate that guides the metal to slide along the tangential direction. Its curvature radius matches the diameter of the magnetic roller to ensure that the metal has sufficient initial velocity when it is separated; (2) an adjustable angle guide plate. The connection between the guide plate 5 and the rotating disk 32 is changed to a hinge + hydraulic rod adjustment, so that the guide plate tilt angle can be adjusted within the range of 30°-60°. The sliding trajectory can be dynamically optimized according to the type of metal (such as granular scrap or strip steel bars).

[0060] The drive assembly is mounted within the mounting base 3 and is used to simultaneously rotate the two magnetic rollers 4. The drive assembly includes a first motor 7 bolted to the outside of the mounting base 3. The first motor 7 is a conventional AC asynchronous motor with sufficient power and speed. The output of the first motor 7 and the magnetic rollers 4 are connected via a synchronous pulley 17 and a synchronous belt 18. The synchronous pulleys 17 are mounted on the output of the first motor 7 and one end of the magnetic rollers 4, respectively. The synchronous belt 18 is fitted over both synchronous pulleys 17. The tooth-to-tooth transmission mechanism within the synchronous belt 18 and the synchronous pulleys 17 transmits power from the first motor 7 to the magnetic rollers 4. The inner ring of the bearing within the rotating plate 15 is fitted over the output of the first motor 7, ensuring its stability.

[0061] The outer side of the magnetic roller 4 is equipped with multiple material-dispensing blocks 10. These blocks are rectangular parallelepiped structures and are evenly distributed along the length of the magnetic roller 4. They are welded to the outer surface of the magnetic roller 4. As the magnetic roller 4 rotates, the material-dispensing blocks 10 can move the construction waste being transported, fully exposing the construction waste to the magnetic field of the magnetic roller 4, thereby improving the adsorption efficiency of metal materials.

[0062] The striking assembly 6 is adjustable and mounted on the top of the mounting base 3, and is used to clean residual structural material from metal. The striking assembly 6 includes a support frame 24 that is movably mounted on the top of the mounting base 3. The support frame 24 is L-shaped and welded from steel, with a horizontal plate-like structure at the top and a vertical plate-like structure on one side. Two second guide rods 27 extend through the top of the support frame 24. These second guide rods 27 are cylindrical rods with an outer diameter that matches the through-holes in the top of the support frame 24, allowing them to slide up and down within the through-holes. A striking plate 30, used for striking metal, is welded to the bottom ends of the two second guide rods 27. The striking plate 30 is a rectangular plate-like structure with a width that matches the length of the magnetic roller 4. The surface is provided with anti-slip grooves to prevent slippage with the metal and reduce the striking effect. A top plate 29 is welded to the top ends of the two second guide rods 27. This rectangular plate-like structure facilitates interaction with the drive components.

[0063] The drive assembly includes a fixed plate 25 welded to one side of the support frame 24. The fixed plate 25 is a rectangular plate-like structure, perpendicular to one side of the support frame 24. A third motor 26 is bolted to one side of the fixed plate 25. The third motor 26 is a conventional DC motor with adjustable speed. The output end of the third motor 26 is used in conjunction with the top plate 29 to drive the knock plate 30 upward. The outer wall of the second guide rod 27 is provided with a tension spring 28. The tension spring 28 is a cylindrical helical compression spring, with its two ends fixedly connected to the support frame 24 and the top plate 29, respectively, on the side adjacent to each other.

[0064] During operation, the output end of the third motor 26 rotates, pushing the top plate 29 upward, which in turn drives the knocking plate 30 upward, while compressing the tension spring 28. When the output end of the third motor 26 stops applying thrust to the top plate 29, the tension of the tension spring 28 drives the knocking plate 30 to descend rapidly, knocking the metal adsorbed on the magnetic roller 4, causing the remaining structure to fall off.

[0065] To further enhance the striking effect, a circular, disc-shaped drive plate 40 is connected to the fixed plate 25 via a bearing. A cylindrical, rod-shaped extension rod 41 is fixed to one side of the drive plate 40, which contacts the top plate 29. The extension rod 41 is eccentrically welded to the drive plate 40. A circular, disc-shaped ratchet plate 42 with a ratchet pawl is welded to the other end of the drive plate 40. The output end of the third motor 26 is fitted with a ratchet wheel 43 located within the ratchet wheel 42. The ratchet wheel 43 cooperates with the ratchet wheel 42 to achieve one-way transmission. When the output end of the third motor 26 rotates, the ratchet wheel 43 and the ratchet wheel 42 cooperate to drive the drive plate 40, which in turn pushes the top plate 29 upward via the extension rod 41. When the extension rod 41 moves from the upper left corner of the drive plate 40 to the upper right corner, the ratchet wheel 42 can continue to rotate under inertia, unimpeded by the resistance of the ratchet wheel 43, and cooperates with the tension spring 28 to drive the striking plate 30 to move rapidly downward.

[0066] The movable setting of the support frame 24 is achieved by the following structure: two rotating seats 20 are welded to the top of the mounting seat 3. The rotating seat 20 is a rectangular block structure with mounting holes compatible with the bearings. A first guide rod 21 is welded between the two rotating seats 20. The first guide rod 21 is a cylindrical rod-shaped structure, and its two ends are respectively welded to the two rotating seats 20. The support frame 24 is slidably mounted on the first guide rod 21 and can slide horizontally on the first guide rod 21. A first screw rod 22 is rotatably arranged between the two rotating seats 20 via bearings. The first screw rod 22 is a cylindrical rod-shaped structure, and its two ends are respectively mounted on the two rotating seats 20 via bearings. The support frame 24 is threadedly mounted on the first screw rod 22. A second motor 23 is bolted to one side of one of the rotating seats 20. The second motor 23 is a conventional AC asynchronous motor, and its output end is welded to the first screw rod 22. When the output end of the second motor 23 rotates, it drives the first screw 22 to rotate, and then drives the support frame 24 to move along the first guide rod 21 to adjust the position of the knocking assembly 6 so that it can be used in conjunction with the two magnetic rollers 4.

[0067] A cleaning assembly is mounted on the magnetic roller 4 and is used to clean the metal on the roller 4. The cleaning assembly includes a push plate 36 that slides over the outer wall of the magnetic roller 4. The push plate 36 is a circular plate with an inner diameter slightly larger than the diameter of the magnetic roller 4, allowing it to slide axially along the outer wall of the magnetic roller 4. A rotating ring 33 and a protective frame 9 are welded to the outer wall of the magnetic roller 4. The protective frame 9 is a rectangular frame with its other end welded to the rotating ring 33. The material removal block 10 is bolted to the top of the protective frame 9, allowing it to be replaced if worn. A reciprocating screw 34 rotates within the protective frame 9 via bearings. A slider is fixed to the bottom of the push plate 36, which cooperates with the spiral groove of the reciprocating screw 34. When the reciprocating screw 34 rotates, the spiral groove drives the push plate 36 to reciprocate axially along the magnetic roller 4.

[0068] A gear ring 39 is welded to one side of the rotating disk 32. The gear ring 39 is a circular toothed structure with evenly distributed teeth on its outer circumference. An electromagnetic clutch 37 is bolted to one side of the rotating ring 33. The electromagnetic clutch 37 is a conventional electromagnetically controlled clutch that has the functions of engaging when powered on and disengaging when powered off. A second gear 38 is welded to the input end of the electromagnetic clutch 37, which meshes with the gear ring 39. When the electromagnetic clutch 37 is powered on, the second gear 38 drives the input end of the electromagnetic clutch 37 to rotate. The output end of the electromagnetic clutch 37 is connected to the reciprocating screw 34 via a coupling, transmitting power to the reciprocating screw 34. By controlling the power on and off of the electromagnetic clutch 37, power can be transmitted and disconnected between the reciprocating screw 34 and the rotating disk 32. When the metal on the magnetic roller 4 needs to be cleaned, the electromagnetic clutch 37 is energized and engaged, and the power of the rotating disk 32 is transmitted to the reciprocating screw 34 through the second gear 38 and the electromagnetic clutch 37, thereby driving the reciprocating screw 34 to rotate, and then driving the push plate 36 to move axially along the magnetic roller 4, pushing the metal on the magnetic roller 4 away from the surface of the magnetic roller 4, thereby achieving metal cleaning.

[0069] Example 2

[0070] Reference Figures 1-9 The present invention provides a new technical solution, a device for preparing asphalt pavement paving materials, wherein a clearance groove 31 adapted to the magnetic roller 4 is opened on the inner wall of one side of the support frame 24, and the clearance groove 31 is a rectangular groove structure, and its size is slightly larger than the diameter of the magnetic roller 4. The support frame 24 is used to support the other end of the magnetic roller 4 to ensure the stability of the magnetic roller 4 during the cleaning rotation process.

[0071] A connecting member is provided on the rotating ring 33, which utilizes the rotational power of the magnetic roller 4 to drive the push plate 36. This connecting member comprises a rotating disk 32, which is mounted on the outer wall of the magnetic roller 4 via a bearing. The rotating disk 32 is an annular disc-shaped structure and is rotatably mounted within the sliding block 11 via a bearing, allowing it to rotate about the central axis of the magnetic roller 4. A guide plate 5 is welded to one side of the rotating disk 32 and rotates with it. The rotating ring 33 is rotatably mounted within the rotating disk 32 via a bearing, allowing it to rotate freely within the rotating disk 32.

[0072] The outer wall of the rotating disk 32 is fixed with a first gear 12, and one side of the mounting base 3 is connected to a rack 13 that meshes with the first gear 12 via bolts. When the magnetic roller 4 moves up and down, the meshing transmission between the first gear 12 and the rack 13 drives the rotating disk 32 to rotate, causing the rotating disk 32 to rotate around the central axis of the magnetic roller 4, thereby automatically adjusting the position of the guide plate 5.

[0073] There is a gap 14 between the middle section of the protective frame 9 and the magnetic roller 4. The push plate 36 is located inside the protective frame 9 to ensure that the push plate 36 does not interfere with the magnetic roller 4 during movement, while preventing construction waste from entering the protective frame 9 and affecting the service life of the reciprocating screw 34.

[0074] First, the construction waste is crushed by the crusher 2 and transported by the conveyor 1;

[0075] When the construction waste moves to the bottom of the magnetic roller 4, the magnetic force on the magnetic roller 4 is used to absorb the metal in the construction waste, and the first motor 7 is started at the same time. During the rotation of the first motor 7, the synchronous wheel 17 and the synchronous belt 18 can be used to drive the magnetic roller 4 to rotate. During the rotation of the magnetic roller 4, the protective frame 9 and the material shifting block 10 can be driven to rotate. The material shifting block 10 can be used to shift the construction waste being transported, so that the metal accumulated below is exposed;

[0076] When the surface of the magnetic roller 4 on one side is full of metal, the electric push rod 19 is started to retract. During the retraction process of the electric push rod 19, the rotating plate 15 can be driven to rotate at the output end of the first motor 7. During the rotation process, the rotating plate 15 can use the waist-shaped hole 16 to move the magnetic roller 4 on one side downward and drive the magnetic roller 4 full of metal to move upward. During the lifting process, the magnetic roller 4 can drive the sliding block 11 to move in the rectangular hole 8, and use the first gear 12 and the rack 13 to drive the rotating disk 32 to rotate. During the rotation of the rotating disk 32, the guide plate 5 can be driven to rotate, so that the guide plate 5 can flip upward when the magnetic roller 4 moves downward, and the magnetic roller 4 can drive the guide plate 5 to flip downward when it moves upward.

[0077] When the magnetic roller 4 filled with metal moves upward to its position, the second motor 23 is started to drive the first screw 22 to rotate. The rotation of the first screw 22 can drive the support frame 24 to move, so that the support frame 24 moves onto the upper magnetic roller 4 and supports the other end of the magnetic roller 4 with the give way groove 31, and the third motor 26 is started. During the rotation of the third motor 26, the driving disc 40 can be driven to rotate by the ratchet 43 and the pawl disc 42. During the rotation of the driving disc 40, the top plate 29 can be driven to move upward by the extension rod 41. The upward movement of the top plate 29 can drive the knocking plate 30 to move upward by the two second guide rods 27. When the extension rod 41 moves from the upper left to the upper right, the top plate 29 can move downward under the action of the tension spring 28, and the extension rod 41 is used to drive the driving disc 40 to continue to rotate rapidly, and drive the knocking plate 30 to move downward, so that it knocks the metal on the surface of the magnetic roller 4 until the building material on the metal surface falls off. At the same time, the magnetic roller 4 continues to rotate, knocking and rotating at the same time, so as to knock metal at different positions.

[0078] After the knocking is completed, the electromagnetic clutch 37 is started. The magnetic roller 4 can drive the rotating ring 33 to revolve during the rotation process. The rotating ring 33 can drive the electromagnetic clutch 37 to move together during the rotation process. The electromagnetic clutch 37 can use the gear ring 39 and the second gear 38 to drive the input end of the electromagnetic clutch 37 to rotate during the movement. The input end of the electromagnetic clutch 37 can drive the output end to rotate, thereby driving the reciprocating screw 34 to rotate. The rotation of the reciprocating screw 34 can use the thread to drive the push plate 36 to move back and forth on the surface of the magnetic roller 4, which can clean out the metal adsorbed on the magnetic roller 4 and guide it through the guide plate 5 to fall on one side of the conveyor 1.

[0079] However, as is well known to those skilled in the art, the working principles and wiring methods of the conveyor 1, crusher 2, first motor 7, electric push rod 19, second motor 23, third motor 26 and electromagnetic clutch 37 are commonplace, and are all conventional means or common knowledge, and will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions, which should all be included in the scope of the claims of the present invention.

Claims

1. A device for preparing asphalt pavement paving materials, comprising a conveyor (1) for conveying construction waste; The crusher (2) is arranged on the conveyor (1) and is used for crushing construction waste, and is characterized in that it also includes: The mounting base (3) is arranged on the top of one side of the conveyor (1), and one side thereof is provided with: Two magnetic rollers (4) are switchably arranged on the mounting base (3) and are used to absorb metals in construction waste; A driving member is used to drive the magnetic roller (4) to rotate. The outer surface of the magnetic roller (4) is provided with a material-moving block (10) for moving the construction waste during the rotation process. a knocking assembly (6) movably arranged on the top of the mounting seat (3) for knocking the metal adsorbed on the magnetic roller (4) to remove residue; A cleaning component is provided on the magnetic roller (4) and is used to clean metal adsorbed on the surface of the magnetic roller (4); The continuous sorting operation is achieved by switching the working positions of the two magnetic rollers (4), and the knocking component (6) cooperates with the cleaning component to complete the cleaning and recovery of the metal.

2. The asphalt pavement paving material preparation device according to claim 1, characterized in that: Two rectangular holes (8) are provided on one side of the mounting seat (3), a sliding block (11) is slidably provided in the rectangular hole (8), and the magnetic roller (4) is rotatably installed in the sliding block (11) via a bearing; the switching assembly comprises a rotating plate (15) rotatably installed in the mounting seat (3), waist-shaped holes (16) adapted to the magnetic roller (4) are provided at both ends of the rotating plate (15), and the rotating plate (15) is driven to rotate by an electric push rod (19) on one side of the mounting seat (3), so that the two magnetic rollers (4) are switched in reverse directions of lifting and lowering.

3. The asphalt pavement paving material preparation device according to claim 2, characterized in that: The driving member comprises a first motor (7) mounted on the outside of the mounting seat (3), the first motor (7) drives the magnetic roller (4) to rotate via a synchronous wheel (17) and a synchronous belt (18), and the bearing in the rotating plate (15) is interference-fitted at the output end of the first motor (7).

4. The asphalt pavement paving material preparation device according to any one of claims 1 to 3, characterized in that: The knocking component (6) comprises: A support frame (24) is movably arranged on the top of the mounting seat (3); A second guide rod (27) passes through the support frame (24), is provided with a knocking plate (30) at the bottom end, and a top plate (29) at the top end; A third motor (26) is mounted on the support frame (24) via a fixing plate (25), with its output end engaging with the top plate (29); A tension spring (28) is sleeved on the second guide rod (27), with two ends respectively connected to the support frame (24) and the top plate (29); After the third motor (26) drives the top plate (29) to rise, the tension spring (28) pulls the striking plate (30) to strike the metal surface quickly.

5. The asphalt pavement paving material preparation device according to claim 4, characterized in that: The knocking component (6) also includes: A driving plate (40) is mounted in the fixed plate (25) via a bearing and has an extension rod (41) on one side that contacts the top plate (29); a ratchet plate (42) fixed to the other side of the driving plate (40); A ratchet wheel (43) is mounted on the output end of the third motor (26) and cooperates with the ratchet disc (42); The ratchet wheel (43) cooperates with the ratchet plate (42) to realize one-way transmission, and the extension rod (41) pushes the top plate (29) to rise.

6. The asphalt pavement paving material preparation device according to claim 5, characterized in that: The top of the mounting seat (3) is provided with: Two rotating seats (20); A first guide rod (21) connects the two rotating seats (20), and a support frame (24) is slidably mounted thereon; A first screw (22) is rotatably mounted between the rotating seats (20) and threadably engaged with the support frame (24); The second motor (23) drives the first screw (22) to rotate so as to move the support frame (24).

7. The asphalt pavement paving material preparation device according to claim 1, characterized in that: The cleaning component includes: A push plate (36) is slidably sleeved on the outer wall of the magnetic roller (4); The protective frame (9) and the rotating ring (33) are welded to the outer wall of the magnetic roller (4); A reciprocating screw (34) is rotatably mounted in the protective frame (9) and is engaged with the push plate (36) through a slider and a spiral groove of the reciprocating screw (34); The connecting member utilizes the rotational power of the magnetic roller (4) to drive the reciprocating screw (34) to rotate; A gap (14) is provided between the middle section of the protection frame (9) and the magnetic roller (4) for the push plate (36) to pass through.

8. The asphalt pavement paving material preparation device according to claim 7, characterized in that: The connecting piece includes: A rotating disk (32) is mounted on the outer wall of the magnetic roller (4) via a bearing sleeve, and a guide plate (5) is welded on one side; A gear ring (39) is fixed on the rotating disk (32); An electromagnetic clutch (37) is mounted on the rotating ring (33), with its input end meshing with the gear ring (39) through the second gear (38), and its output end connected to the reciprocating screw (34); The first gear (12) is fixed on the outer wall of the rotating disk (32) and meshes with the rack (13) on the mounting seat (3).

9. The asphalt pavement paving material preparation device according to claim 4, characterized in that: The support frame (24) is L-shaped, and is provided with a clearance groove (31) on the inner side thereof for cooperating with the magnetic roller (4) and for supporting the end of the magnetic roller (4).

10. A method for preparing asphalt pavement paving materials, applied to the asphalt pavement paving material preparation device according to any one of claims 1 to 9, characterized in that: The steps include: S1, firstly, using a crusher (2) to crush the construction waste and then conveying it through a conveyor (1); S2, when the construction waste moves to the bottom of the magnetic roller (4), the metal in the construction waste is adsorbed by the magnetic force of the magnetic roller (4); S3. When the surface of the magnetic roller (4) on one side is full of metal, the electric push rod (19) is started to start the two magnetic rollers (4) to move up and down in the opposite direction, and the other magnetic roller (4) is used to continue the adsorption and sorting; S4, knocking the adsorbed metal through the knocking component (6) to break the building body on the metal surface; S5. Finally, the metal on the magnetic roller (4) is cleaned by the push plate (36).

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