A high performance asphalt concrete production apparatus and method

Abstract

The application relates to the technical field of asphalt concrete production, and provides high-performance asphalt concrete production equipment and a method, which comprises a feeding hopper, a screening box, a supporting shaft, a sliding block, a screening frame and a linear cylinder, a feeding inlet is arranged on the screening box, the feeding hopper is arranged above the screening box and communicates with the feeding inlet, and the feeding hopper is used for feeding asphalt materials into the screening box; the supporting shaft is horizontally arranged in the screening box, guide grooves are arranged in the length direction of the supporting shaft, the guide grooves are used for guiding the movement of the sliding block, the screening frame is connected with the sliding block, the linear cylinder is connected with the sliding block, and the linear cylinder is used for controlling the reciprocating movement of the screening frame along the horizontal direction; when the screening frame is in the process of horizontal movement, the feeding inlet always falls within the plane range of the screening frame. The application has the effect of improving the screening efficiency of asphalt concrete.

Description

Technical Field

[0001] This application relates to the field of asphalt concrete production technology, and in particular to a high-performance asphalt concrete production equipment and method. Background Technology

[0002] Asphalt concrete, commonly known as asphalt concrete, is a mixture made by artificially selecting mineral materials with a certain gradation, such as crushed stone or crushed gravel, stone chips or sand, mineral powder, etc., and mixing them with a certain proportion of road asphalt materials under strict control conditions. Asphalt concrete can be divided into two main categories according to the different binders used: petroleum asphalt and coal tar pitch. In some areas, natural asphalt is also used or mixed in the mixture.

[0003] Based on the type of aggregate used, it can be divided into several categories such as crushed stone, gravel, sand, and slag, with crushed stone being the most commonly used. Based on the maximum particle size of the mixture, it can be divided into several categories such as coarse (below 35-40 mm), medium (below 20-25 mm), fine (below 10-15 mm), and sand (below 5-7 mm).

[0004] Recycling and reusing waste asphalt concrete is an important way to achieve resource recycling and reduce construction costs in the road engineering field. In its recycling production process, the asphalt concrete raw materials need to be crushed first, and then the materials of different particle sizes are separated by screening. The large pieces of material obtained by screening are crushed again to obtain asphalt concrete fragments that meet the requirements of road construction. Therefore, the efficiency of the screening process directly affects the overall recycling production progress.

[0005] In existing technologies, when screening crushed asphalt concrete raw materials, a single screen is mostly used to complete the screening operation. This method has obvious technical defects: large pieces of crushed asphalt concrete material are easily stuck in the screen holes, causing screen blockage. This not only makes it impossible to effectively separate large pieces of material, but also hinders the normal screening of small pieces of asphalt concrete, seriously reducing the efficiency of the screening operation and affecting the overall process of subsequent secondary crushing and raw material recycling. Therefore, it needs to be improved. Summary of the Invention

[0006] To improve the screening efficiency of asphalt concrete, this application provides a high-performance asphalt concrete production equipment.

[0007] The high-performance asphalt concrete production equipment provided in this application adopts the following technical solution: A high-performance asphalt concrete production equipment includes a feeding hopper, a screening box, a support shaft, a slider, a screening frame, and a linear cylinder. The screening box has a feeding port, and the feeding hopper is located above the screening box and communicates with the feeding port. The feeding hopper is used to feed asphalt material into the screening box. The support shaft is horizontally located inside the screening box and has a guide groove along its length. The guide groove is used to guide the movement of the slider. The screening frame is connected to the slider, and the linear cylinder is connected to the slider to control the reciprocating movement of the screening frame in the horizontal direction. When the screening frame is moving horizontally, the feeding port always falls within the plane of the screening frame.

[0008] By adopting the above technical solution, the asphalt concrete material, after being crushed by the crushing device, enters from the feed hopper and falls onto the screening frame for filtration under gravity. Simultaneously, a linear cylinder controls the horizontal movement of the screening frame, and a guide groove guides and limits the movement of the slider, ensuring linear motion. The movement of the screening frame causes the material to vibrate or shake, preventing large pieces of asphalt concrete from clogging the screen holes and ensuring that small pieces of asphalt concrete can pass through smoothly. The screened asphalt raw material is then mixed with other auxiliary materials and re-mixed to obtain a new asphalt mixture.

[0009] Preferably, it also includes connecting strips. The support shaft includes a rectangular portion and an inclined portion. The inclined portion is located on the side of the rectangular portion near the screening frame. Two inclined portions are symmetrically arranged, and the two inclined portions form a figure-eight shape. The rectangular portion is located below the clamp formed by the two inclined portions. The guide groove is located on both sides of the long side of the rectangular portion. One end of the connecting strip is connected to the slider, and the other end is slidably connected to the guide groove. The connecting strip is L-shaped, and the slider is connected to the rectangular portion through the two connecting strips.

[0010] By adopting the above technical solution, after the asphalt concrete aggregate passes through the screening frame, the inclined part can block the aggregate, preventing it from falling into the guide groove and ensuring that the slider slides smoothly along the guide groove.

[0011] Preferably, it further includes a first motor and a material guiding assembly. The first motor is mounted on the screening box and connected to the rectangular portion, and is used to drive the support shaft to rotate. The material guiding assembly is located below the screening frame and includes a material guiding plate, a pull rope, a winding wheel, and a second motor. A material guiding port is provided through the side wall of the screening box, and the material guiding plate is used to cover the material guiding port. The side of the material guiding plate near the material guiding port is hinged to the inner wall of the screening box. One end of the pull rope is connected to the material guiding plate, and the other end passes through the screening box and is wound around the winding wheel. The winding wheel is rotatably connected to the outside of the screening box. The second motor is connected to the winding wheel and is used to drive the winding wheel to rotate. When the winding wheel rotates and causes the pull rope to unwind, the side of the material guiding plate away from the material guiding port abuts against the inner wall of the screening box. At this time, the material guiding plate is tilted downwards in the direction close to the material guiding port.

[0012] By adopting the above technical solution, large pieces of asphalt concrete material that have been filtered out by the screening box need to be transferred out of the screening box for further crushing.

[0013] The specific operating procedure is as follows: First, the second motor controls the winding wheel to rotate, causing the rope to unwind. The guide plate rotates under its own weight until the side of the guide plate furthest from the guide opening abuts against the inner wall of the screening box. At this point, the guide opening opens, and the guide plate tilts downwards towards the guide opening. Next, the first motor controls the entire support shaft to rotate 180°, causing large pieces of asphalt concrete on the screening frame to fall onto the guide plate. Under the influence of gravity, they then fall out of the guide opening. A collection box can be placed at the guide opening to collect the material.

[0014] It should be noted that when the second motor controls the rope winding wheel to rotate in the opposite direction, the pull rope will be continuously wound around the rope winding wheel. At this time, the guide plate rotates in the direction close to the guide opening, and the inclination angle of the guide plate gradually increases, so that large pieces of asphalt material remaining on the guide plate can fall smoothly and completely out of the guide opening. When the guide plate rotates to fit against the inner wall of the screening box, the guide opening is completely blocked by the guide plate, ensuring that no material leaks out of the guide opening during the screening process.

[0015] Preferably, the screening box has a detachable cover plate at its opening, the feed inlet is located on the cover plate, and the feed hopper is connected to the cover plate; a positioning component is connected to the cover plate, the positioning component includes an I-beam and a spring, a slot is provided on the screening box, one end of the I-beam passes horizontally through the cover plate and engages with the slot, and the two ends of the spring are respectively connected to the I-beam and the cover plate.

[0016] By adopting the above technical solution, the staff can apply a pulling force to the I-beam block. The movement of the I-beam block can stretch the spring and cause elastic deformation. When one end of the I-beam block is disengaged from the slot, the cover plate can be easily removed from the screening box, which facilitates the cleaning and maintenance of the inside of the screening box.

[0017] Preferably, the filter box is bolted to the slider.

[0018] By adopting the above technical solution, the bolt passes through the screening frame and is screwed onto the slider, realizing a detachable connection between the screening frame and the slider, which facilitates the replacement of the screening frame and allows for the selection of different specifications of screening frames according to actual needs.

[0019] Preferably, it further includes a mixing tank, a mixing assembly, and a heating oil pipe. The bottom of the screening box has a discharge port, the mixing tank is connected to the discharge port, the mixing assembly is located in the mixing tank and is used to mix the material in the mixing tank, and the heating oil pipe is wound around the mixing tank and is used to heat the mixing tank. The two ends of the heating oil pipe are an oil inlet and an oil outlet, respectively.

[0020] By adopting the above technical solution, the sieved small pieces of asphalt concrete fall from the discharge port into the mixing tank. At the same time, aggregates, recycling agents, and other auxiliary materials are added to the mixing tank and mixed. Through heating and mixing, a new asphalt mixture is obtained. The heating oil can fill the entire heating oil pipe to heat the mixing tank and prevent the asphalt temperature inside the mixing tank from becoming too low.

[0021] Preferably, the stirring assembly includes a stirring motor, a stirring shaft, and stirring blades. The stirring shaft is connected to the stirring motor and is disposed inside the stirring tank, and the stirring blades are disposed on the stirring shaft.

[0022] By adopting the above technical solution, the mixing motor drives the mixing shaft to rotate, thereby driving the mixing blades to stir the asphalt in the mixing tank.

[0023] Preferably, the device further includes a pusher plate and an electric push rod. The stirring shaft includes an inner shaft and an outer cylinder. The inner shaft is connected to the stirring motor. The inner shaft has a limiting strip along its length. The inner wall of the outer cylinder has a limiting groove. The limiting strip is engaged in the limiting groove. The outer cylinder is movably sleeved on the inner shaft. The stirring blades are disposed on the outer cylinder. One end of the stirring tank has a discharge port, which is closed by a discharge gate. The pusher plate is disposed on the outer cylinder and away from the discharge port. The electric push rod is connected to the pusher plate through a ball bearing and is used to control the movement of the outer cylinder.

[0024] By adopting the above technical solution, during mixing, the mixing motor controls the rotation of the inner shaft. Due to the interlocking of the limiting strip and the limiting groove, the inner shaft can synchronously drive the outer cylinder to rotate, thus achieving the mixing of asphalt. Because of the presence of ball bearings, the piston rod of the electric push rod will not rotate during the rotation of the pusher plate. After mixing is completed, the asphalt in the mixing tank needs to be transferred out for storage.

[0025] During unloading, stop the rotation of the mixing shaft and first open the unloading gate to open the discharge port. Then, operate the electric push rod to control the outer cylinder to move in a straight line in the horizontal direction, so that the outer cylinder and the inner shaft move relative to each other. During the movement of the outer cylinder, the pusher plate can push the asphalt in the mixing tank towards the discharge port to realize the discharge and improve the convenience of production.

[0026] Secondly, this application also provides a method for producing high-performance asphalt concrete, a method for producing asphalt concrete using production equipment with all the above-described structures, comprising the following steps: S1. After being crushed, the asphalt concrete material enters from the feed hopper and falls onto the screening frame for filtration. At the same time, the linear cylinder controls the screening frame to move horizontally to prevent large pieces of asphalt concrete from clogging the screen holes and to ensure that small pieces of asphalt concrete fragments can pass through the screen holes normally. S2. The screened asphalt raw material enters the mixing tank from the discharge port. The asphalt raw material, aggregate, recycling agent and other auxiliary materials are heated and mixed to become a new asphalt mixture.

[0027] In summary, this application includes at least one of the following beneficial technical effects: (1) By setting up a linear cylinder, a support shaft and a slider, the linear cylinder can drive the slider to move horizontally along the length of the support shaft, so that the material in the screening frame will vibrate or shake due to inertia, thereby reducing the possibility of large pieces of asphalt concrete blocking the screen holes and facilitating the smooth passage of small pieces of asphalt concrete through the screen holes to achieve screening.

[0028] (2) By setting the support shaft to connect the rectangular part and the inclined part, the inclined part can block the broken material falling from the upper screening box, prevent the broken material from falling directly into the guide groove, and ensure that the slider moves smoothly in a straight line.

[0029] (3) By setting the first motor and the material guiding component to work together, it is convenient to transfer the large pieces of asphalt concrete debris intercepted on the screening frame to the outside of the screening box, thereby improving the convenience of production. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the guide plate of the production equipment in the vertical state in an embodiment of this application; Figure 2This is a schematic diagram of the structure of the support shaft end face in an embodiment of this application; Figure 3 yes Figure 1 An enlarged schematic diagram of part A in the middle section; Figure 4 This is a schematic diagram of the guide plate of the production equipment in an inclined state in an embodiment of this application; Figure 5 yes Figure 4 An enlarged schematic diagram of part B in the middle section.

[0031] Reference numerals: 1. Feed hopper; 2. Screening box; 3. Support shaft; 31. Rectangular part; 32. Inclined part; 4. Slider; 5. Screening frame; 6. Linear cylinder; 7. Guide groove; 8. First motor; 9. Material guiding assembly; 91. Guide plate; 92. Pull rope; 93. Rope reel; 94. Second motor; 10. Material guide port; 11. Cover plate; 12. Positioning assembly; 121. I-beam; 122. Spring; 13. Mixing tank; 14. Mixing assembly; 141. Mixing motor; 142. Mixing shaft; 143. Mixing blade; 15. Heating oil pipe; 16. Inner shaft; 17. Outer cylinder; 18. Discharge port; 19. Electric push rod; 20. Receiving groove; 21. Limiting strip; 22. Connecting strip; 23. Discharge port; 24. Slot; 25. Push plate. Detailed Implementation

[0032] The technical solutions of this application will now be described with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can be embodied in many different forms and is not limited to the embodiments described herein.

[0033] In the representation of this application, the reference to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., means that a specific feature, structure, material, or characteristic represented in connection with that embodiment or example is included in at least one embodiment or example of this application. Moreover, the specific features, structures, materials, or characteristics represented may be combined in any suitable manner in one or more embodiments or examples.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0035] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection; a detachable connection; an integral part; or a mechanical connection. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0036] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Without conflict, those skilled in the art can combine and integrate the different embodiments or examples shown in this application, as well as the features of those embodiments or examples.

[0037] This application discloses a high-performance asphalt concrete production equipment. (Refer to...) Figures 1 to 3 The production equipment includes a feed hopper 1, a screening box 2, a support shaft 3, a slider 4, a screening frame 5, and a linear cylinder 6. The screening box 2 has a feed inlet. The feed hopper 1 is installed above the screening box 2 and communicates with the feed inlet. The feed hopper 1 has an inverted conical design to allow asphalt material to enter the screening box 2. The support shaft 3 is horizontally installed inside the screening box 2 and has guide grooves 7 along its length to guide the movement of the slider 4. The screening frame 5 is fixedly connected to the slider 4 by bolts. The piston rod of the linear cylinder 6 is connected to the slider 4 and controls the reciprocating movement of the screening frame 5 in the horizontal direction. During the horizontal movement of the screening frame 5, the feed inlet always falls within the plane of the screening frame 5. The cylinder has a stroke control mechanism that can control the piston rod to stop at a predetermined position, achieving precise mechanical actions (such as clamping, pushing, lifting, etc.) and providing continuous, stable, and reliable pressure. Typical stroke control mechanisms include, but are not limited to, mechanical stops, magnetic switches with solenoid valves, and displacement sensors with controllers. These are existing technologies and will not be elaborated upon here.

[0038] The asphalt concrete material, after being crushed by the crushing device, enters from the feed hopper 1 and falls onto the screening frame 5 for filtration under gravity. Simultaneously, the linear cylinder 6 controls the horizontal movement of the screening frame 5, and the guide groove 7 guides and limits the movement of the slider 4, ensuring linear motion. The movement of the screening frame 5 causes the material to vibrate or shake, preventing large pieces of asphalt concrete from clogging the screen holes and ensuring that small pieces of asphalt concrete can pass through smoothly. The screened asphalt raw material is then mixed with other auxiliary materials and re-mixed to obtain a new asphalt mixture.

[0039] Specifically, the support shaft 3 includes a rectangular portion 31 and an inclined portion 32 connected to each other. The inclined portion 32 is located on the side of the rectangular portion 31 closest to the screening frame 5. Two inclined portions 32 are symmetrically arranged, forming a V-shape. The rectangular portion 31 is located below the opening formed by the two inclined portions 32. The guide groove 7 is located on both sides of the long side of the rectangular portion 31. The slider 4 is located above the inclined portion 32. The slider 4 is connected to the support shaft 3 via a connecting strip 22. The connecting strip 22 is L-shaped, with one end connected to the slider 4 and the other end slidingly connected within the guide groove 7. The slider 4 is connected to the rectangular portion 31 via two symmetrical connecting strips 22. After the asphalt concrete aggregate passes through the screening frame 5, the inclined portion 32 can block the aggregate falling from above, preventing it from falling into the guide groove 7 and ensuring that the slider 4 slides smoothly along the guide groove 7.

[0040] In this embodiment, a first motor 8 and a guide assembly 9 are also installed on the screening box 2. The first motor 8 is connected to the rectangular part 31 and is used to drive the support shaft 3 to rotate. The guide assembly 9 is located below the screening frame 5 and includes a guide plate 91, a pull rope 92, a winding wheel 93, and a second motor 94. A guide port 10 is provided through the side wall of the screening box 2, and the guide plate 91 is used to block the guide port 10. The side of the guide plate 91 near the guide port 10 is hinged to the inner wall of the screening box 2, and the rotation axis of the guide plate 91 is in the horizontal direction. One end of the pull rope 92 is connected to the guide plate 91, and the other end passes through the screening box 2 and is wound around the winding wheel 93. The winding wheel 93 is rotatably connected to the outside of the screening box 2, and the second motor 94 is connected to the winding wheel 93 to drive the winding wheel 93 to rotate. When the winding wheel 93 rotates and drives the pull rope 92 to unwind, the side of the guide plate 91 away from the guide port 10 abuts against the inner wall of the screening box 2. At this time, the guide plate 91 tilts downward in the direction close to the guide port 10.

[0041] Combination Figure 4 When it is necessary to remove large pieces of asphalt concrete from the screening frame 5, the second motor 94 is first operated to control the rotation of the rope reel 93, causing the pull rope 92 to unwind. The guide plate 91 rotates under its own weight until the side of the guide plate 91 away from the guide opening 10 abuts against the inner wall of the screening box 2. At this time, the guide opening 10 is open, and the guide plate 91 tilts downwards in the direction close to the guide opening 10. Then, the first motor 8 is operated to control the entire support shaft 3 to rotate 180°, causing the large pieces of asphalt concrete on the screening frame 5 to fall onto the guide plate 91, and then fall out of the guide opening 10 under the action of gravity. Workers can set up a collection box at the guide opening 10 to collect them.

[0042] The screening box 2 has a detachable cover plate 11 at its opening, with the feed inlet located on the cover plate 11 and the feed hopper 1 fixedly connected to it. A positioning assembly 12 is installed on the cover plate 11, comprising an I-beam 121 and a spring 122. A slot 24 is provided on the screening box 2, with one end of the I-beam 121 horizontally passing through the cover plate 11 and engaging with the slot 24. Both ends of the spring 122 are connected to the I-beam 121 and the cover plate 11, respectively. A receiving groove 20 is provided on the side of the cover plate 11 near the slot 24, communicating with the slot 24. Workers can apply a pulling force to the I-beam 121; the movement of the I-beam 121 stretches the spring 122, causing elastic deformation. Once one end of the I-beam 121 disengages from the slot 24 and enters the receiving groove 20, the cover plate 11 can be easily removed from the screening box 2, facilitating cleaning and maintenance of the screening box 2's interior.

[0043] Combination Figure 5 In addition, in some embodiments, the production equipment also includes a mixing tank 13, a mixing assembly 14, and a heating oil pipe 15. A discharge port 23 is provided at the bottom of the screening box 2, and the mixing tank 13 is connected to the discharge port 23. The mixing assembly 14 is installed on the mixing tank 13 for mixing the material inside the mixing tank 13. The heating oil pipe 15 is wound around the mixing tank 13 for heating the mixing tank 13. The two ends of the heating oil pipe 15 are an oil inlet and an oil outlet, respectively. The heating oil can fill the entire heating oil pipe 15, and the heating of the mixing tank 13 is achieved by the circulation of the heating oil, preventing the asphalt inside the mixing tank 13 from becoming too cold and sticking. The mixing assembly 14 includes a mixing motor 141, a mixing shaft 142, and mixing blades 143. The mixing shaft 142 is connected to the mixing motor 141 and is located inside the mixing tank 13. The mixing blades 143 are installed on the mixing shaft 142. The mixing motor 141 drives the mixing shaft 142 to rotate, thereby driving the mixing blades 143 to agitate the asphalt inside the mixing tank 13. After screening, small pieces of asphalt concrete fall from the discharge port 23 into the mixing tank 13. At the same time, aggregates, recycling agents and other auxiliary materials are added into the mixing tank 13 and mixed. Through heating and mixing, a new asphalt mixture is obtained.

[0044] The stirring shaft 142 includes an inner shaft 16 and an outer cylinder 17. The inner shaft 16 is connected to the output shaft of the stirring motor 141. A limiting strip 21 is fixedly connected to the inner shaft 16 along its length. A limiting groove is correspondingly formed on the inner wall of the outer cylinder 17, and the limiting strip 21 is engaged in the limiting groove. The outer cylinder 17 is sleeved on the inner shaft 16 and is movable along the length of the inner shaft 16. The stirring blades 143 are fixedly connected to the outer cylinder 17. A discharge port 18 is formed at one end of the stirring tank 13, and the discharge port 18 is closed by a discharge gate. A pusher plate 25 is fixedly connected to the outer cylinder 17 and is located away from the discharge port 18. The piston rod of the electric push rod 19 is connected to the pusher plate 25 through a ball bearing and is used to control the linear movement of the outer cylinder 17.

[0045] During mixing, the mixing motor 141 controls the inner shaft 16 to rotate. Because the limiting strip 21 and the limiting groove are interlocked, the inner shaft 16 can synchronously drive the outer cylinder 17 to rotate, thereby achieving the mixing of asphalt. Due to the presence of ball bearings, the piston rod of the electric push rod 19 will not rotate during the rotation of the push plate 25.

[0046] After mixing is complete, the asphalt in the mixing tank 13 needs to be transferred out for storage. During unloading, the rotation of the mixing shaft 142 is stopped, and the unloading gate is opened first, allowing the discharge port 18 to open. Then, the electric push rod 19 is operated to control the outer cylinder 17 to move linearly in the horizontal direction, causing relative movement between the outer cylinder 17 and the inner shaft 16. During the movement of the outer cylinder 17, the pusher plate 25 pushes the asphalt in the mixing tank 13 towards the discharge port 18, achieving discharge and improving production convenience.

[0047] The implementation principle of a high-performance asphalt concrete production equipment in this application embodiment is as follows: the asphalt concrete material after crushing is fed into the feeding hopper 1 and falls into the screening frame 5 for screening and filtration; at the same time, the linear cylinder 6 is started to drive the screening frame 5 to reciprocate in the horizontal direction, which effectively avoids large asphalt concrete particles from clogging the screen holes, ensures that small pieces of asphalt concrete with qualified particle size can stably pass through the screen holes, and ensures that the screening process is carried out smoothly.

[0048] The qualified asphalt raw material is precisely fed into the mixing tank 13 through the feeding port 23. At the same time, aggregates, recycling agents and other auxiliary materials are added into the mixing tank 13 according to the preset ratio. The asphalt raw material and various auxiliary materials are heated at a constant temperature and fully mixed until a uniform new asphalt mixture is formed.

[0049] After entering the unloading process, first stop the rotation of the mixing shaft 142, then open the unloading gate so that the discharge port 18 is fully open; then start the electric push rod 19 to control the outer cylinder 17 to make linear reciprocating motion in the horizontal direction, causing the outer cylinder 17 and the inner shaft 16 to move relative to each other. During the movement of the outer cylinder 17, its matching push plate 25 moves synchronously, pushing the new asphalt mixture in the mixing tank 13 towards the discharge port 18 at a uniform speed, thus completing the unloading operation.

[0050] Based on the above embodiments, this application also provides a method for producing high-performance asphalt concrete, a method for producing asphalt concrete using production equipment with all the above structures, comprising the following steps: S1. The crushed asphalt concrete material enters from the feed hopper 1 and falls onto the screening frame 5 for filtration. At the same time, the linear cylinder 6 controls the screening frame 5 to move horizontally to prevent large pieces of asphalt concrete from clogging the screen holes and to ensure that small pieces of asphalt concrete fragments pass through the screen holes normally. S2. The screened asphalt raw material enters the mixing tank 13 from the discharge port 23. At the same time, aggregates and recycling agents are added to the mixing tank 13. The asphalt raw material, aggregates, recycling agents and other auxiliary materials are heated and mixed to become a new asphalt mixture. S3. When unloading, stop the rotation of the mixing shaft 142, first open the unloading gate so that the discharge port 18 is open. Then, run the electric push rod 19 to control the outer cylinder 17 to move in a straight line in the horizontal direction, so that the outer cylinder 17 and the inner shaft 16 move relative to each other. During the movement of the outer cylinder 17, the push plate 25 can push the asphalt in the mixing tank 13 toward the discharge port 18.

[0051] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high-performance asphalt concrete production equipment, characterized in that, The system includes a feed hopper (1), a screening box (2), a support shaft (3), a slider (4), a screening frame (5), and a linear cylinder (6). The screening box (2) has a feed inlet. The feed hopper (1) is located above the screening box (2) and is connected to the feed inlet. The feed hopper (1) is used to feed asphalt material into the screening box (2). The support shaft (3) is horizontally located inside the screening box (2). The support shaft (3) has a guide groove (7) along its own length direction. The guide groove (7) is used to guide the movement of the slider (4). The screening frame (5) is connected to the slider (4). The linear cylinder (6) is connected to the slider (4) and is used to control the screening frame (5) to move back and forth in the horizontal direction. When the screening frame (5) is moving horizontally, the feed inlet always falls within the plane range of the screening frame (5).

2. The high-performance asphalt concrete production equipment according to claim 1, characterized in that, It also includes a connecting strip (22). The support shaft (3) includes a rectangular part (31) and an inclined part (32). The inclined part (32) is located on the side of the rectangular part (31) near the screening frame (5). There are two inclined parts (32) symmetrically arranged. The two inclined parts (32) are in a figure-eight shape. The rectangular part (31) is located below the clamp formed by the two inclined parts (32). The guide groove (7) is located on both sides of the long side of the rectangular part (31). One end of the connecting strip (22) is connected to the slider (4), and the other end is slidably connected to the guide groove (7). The connecting strip (22) is in an L-shape. The slider (4) is connected to the rectangular part (31) through the two connecting strips (22).

3. The high-performance asphalt concrete production equipment according to claim 2, characterized in that, It also includes a first motor (8) and a material guiding assembly (9). The first motor (8) is mounted on the screening box (2) and connected to the rectangular part (31) for driving the support shaft (3) to rotate. The material guiding assembly (9) is located below the screening frame (5). The material guiding assembly (9) includes a material guiding plate (91), a pull rope (92), a rope winding wheel (93), and a second motor (94). A material guiding port (10) is provided through the side wall of the screening box (2). The material guiding plate (91) is used to cover the material guiding port (10). The side of the material guiding plate (91) near the material guiding port (10) is hinged to the screening box. 2) The inner wall of the screen box (2) has one end of the pull rope (92) connected to the guide plate (91) and the other end passing through the screen box (2) and wound around the rope reel (93). The rope reel (93) is rotatably connected to the outside of the screen box (2). The second motor (94) is connected to the rope reel (93) and is used to drive the rope reel (93) to rotate. When the rope reel (93) rotates and drives the pull rope (92) to unwind, the side of the guide plate (91) away from the guide port (10) abuts against the inner wall of the screen box (2). At this time, the guide plate (91) is tilted downward in the direction close to the guide port (10).

4. The high-performance asphalt concrete production equipment according to claim 1, characterized in that, The screening box (2) has a detachable cover plate (11) at its opening. The feed inlet is located on the cover plate (11), and the feed hopper (1) is connected to the cover plate (11). A positioning component (12) is connected to the cover plate (11). The positioning component (12) includes an I-beam (121) and a spring (122). A slot (24) is provided on the screening box (2). One end of the I-beam (121) passes horizontally through the cover plate (11) and engages with the slot (24). The two ends of the spring (122) are connected to the I-beam (121) and the cover plate (11) respectively.

5. The high-performance asphalt concrete production equipment according to claim 4, characterized in that, The filter box (5) is bolted to the slider (4).

6. The high-performance asphalt concrete production equipment according to claim 1, characterized in that, It also includes a mixing tank (13), a mixing assembly (14) and a heating oil pipe (15). The bottom of the screening box (2) is provided with a discharge port (23). The mixing tank (13) is connected to the discharge port (23). The mixing assembly (14) is located on the mixing tank (13) and is used to mix the material in the mixing tank (13). The heating oil pipe (15) is wound around the mixing tank (13) and is used to heat the mixing tank (13). The two ends of the heating oil pipe (15) are the oil inlet and the oil outlet, respectively.

7. The high-performance asphalt concrete production equipment according to claim 6, characterized in that, The stirring assembly (14) includes a stirring motor (141), a stirring shaft (142), and stirring blades (143). The stirring shaft (142) is connected to the stirring motor (141) and is located inside the stirring tank (13). The stirring blades (143) are located on the stirring shaft (142).

8. The high-performance asphalt concrete production equipment according to claim 7, characterized in that, It also includes a pusher plate (25) and an electric push rod (19). The stirring shaft (142) includes an inner shaft (16) and an outer cylinder (17). The inner shaft (16) is connected to the stirring motor (141). The inner shaft (16) is provided with a limiting strip (21) along its own length. The inner wall of the outer cylinder (17) is provided with a limiting groove. The limiting strip (21) is engaged in the limiting groove. The outer cylinder (17) is movably sleeved on the inner shaft (16). The stirring blade (143) is provided on the outer cylinder (17). One end of the stirring tank (13) is provided with a discharge port (18). The discharge port (18) is closed by a discharge gate. The pusher plate (25) is provided on the outer cylinder (17) and away from the discharge port (18). The electric push rod (19) is connected to the pusher plate (25) through a ball bearing and is used to control the movement of the outer cylinder (17).

9. A method for producing high-performance asphalt concrete, comprising a method for producing asphalt concrete using the production equipment described in any one of claims 6 to 8, characterized in that, Includes the following steps: S1. After being crushed, the asphalt concrete material enters from the feed hopper (1) and falls onto the screening frame (5) for filtration. At the same time, the linear cylinder (6) controls the screening frame (5) to move horizontally to avoid large pieces of asphalt concrete clogging the screen holes and to ensure that small pieces of asphalt concrete fragments pass through the screen holes normally. S2. The screened asphalt raw material enters the mixing tank (13) from the discharge port (23). The asphalt raw material and aggregates, recycling agents and other auxiliary materials are heated and mixed to become a new asphalt mixture.

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