Road asphalt concrete regeneration processing equipment and processing technology

Abstract

The invention relates to the field of road engineering material regeneration, in particular to road asphalt concrete regeneration processing equipment and a processing technology, and the road asphalt concrete regeneration processing equipment comprises an old material lifting assembly used for inputting asphalt concrete. Through cooperation of the old material crushing equipment, the respective subpackaging equipment and the powder screening equipment, an integrated pretreatment scheme of automatic closed-loop cyclic crushing, multi-stage fine screening and classified storage can be realized, so that the problems that the particle size of a finished product material is difficult to control through one-time crushing in the prior art; in the prior art, a large amount of superfine powder is generated or overproof bulk materials still exist, so that the gradation of the recycled material is not ideal, and the product quality of the subsequent recycled asphalt concrete is directly influenced. And secondly, the crushed materials are mixed in particle size and cannot be classified and utilized, so that the value of the crushed materials as regenerated raw materials is reduced. In addition, when large materials appear, the large materials need to be put into the crusher again through manual intervention, the automation degree is low, and the production efficiency is not high.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of road engineering material recycling, in particular to a road asphalt concrete recycling processing equipment and processing technology. BACKGROUND

[0002] With the large-scale maintenance period of China's highway network, a large amount of waste asphalt concrete materials are generated every year. Recycling and reusing these materials has great significance for saving resources, protecting the environment and reducing engineering costs.

[0003] In the asphalt concrete recycling process, the recycled old asphalt concrete blocks (RAP) need to be crushed and sieved for pretreatment to obtain uniform particle size and clean recycled aggregates. The traditional pretreatment method usually uses a simple jaw crusher or impact crusher for one-time crushing, and then a single-layer vibrating screen is used for rough sieving.

[0004] This traditional method has many disadvantages: first, one-time crushing cannot control the particle size of the finished product, often producing a large amount of fine powder or still having oversized large blocks, resulting in unsatisfactory gradation of recycled materials, directly affecting the product quality of subsequent recycled asphalt concrete. Second, the particle size of the crushed material is mixed and cannot be used for classification, reducing its value as a recycled raw material. In addition, when large blocks appear, manual intervention is needed to put them back into the crusher, which has low automation and low production efficiency.

[0005] Therefore, the prior art lacks an integrated pretreatment scheme that can realize automatic closed-loop crushing, multi-stage fine sieving and classified storage, which is a key bottleneck for improving the quality and efficiency of road asphalt concrete recycling.

[0006] Therefore, it is necessary to invent a road asphalt concrete recycling processing equipment and processing technology to solve the above problems. SUMMARY

[0007] The purpose of the present application is to provide a road asphalt concrete recycling processing equipment and processing technology, which can realize an integrated pretreatment scheme of automatic closed-loop crushing, multi-stage fine sieving and classified storage by cooperating the old material crushing equipment with the separate packaging equipment and the powder sieving equipment, to solve the problems in the prior art that one-time crushing cannot control the particle size of the finished product, often produces a large amount of fine powder or still has oversized large blocks, resulting in unsatisfactory gradation of recycled materials, directly affecting the product quality of subsequent recycled asphalt concrete. Second, the particle size of the crushed material is mixed and cannot be used for classification, reducing its value as a recycled raw material. In addition, when large blocks appear, manual intervention is needed to put them back into the crusher, which has low automation and low production efficiency.

[0008] In order to achieve the above object, the present application provides the following technical scheme: a road asphalt concrete recycling processing equipment, comprising: Old material lifting assembly for inputting asphalt concrete, comprising a bottom plate and a lifting device installed on the top of the bottom plate; Old material crushing equipment arranged at the output end side of the lifting device, comprising a protective shell, the protective shell is fixedly connected with the bottom plate through a supporting rod, the inside of the protective shell is fixedly connected with a first fixed knife and a second fixed knife respectively, the inside of the bottom plate is further provided with a first rotating knife and a second rotating knife, the first rotating knife cooperates with the first fixed knife, and the second fixed knife cooperates with the second rotating knife; Respectively, the packaging equipment is arranged at the bottom outlet of the protective shell, comprising a protective box, the protective box is communicated with the protective shell, the side of the protective box is provided with a waste outlet, a large material outlet and a medium material outlet; Powder screening equipment, comprising a large material screen, a medium material screen and a small material screen.

[0009] As a preferred scheme of the present application, the outer side of the lifting device is provided with an old material inlet, the old material inlet is communicated with the bottom plate, the inner side of the top of the lifting device is provided with an old material outlet, and the old material outlet is communicated with the lifting device.

[0010] As a preferred scheme of the present application, the side of the protective shell is provided with a crushing motor, the output end of the crushing motor is fixedly connected with a driving shaft through a shaft coupling, the side of the driving shaft is provided with a driven shaft, the driving shaft and the driven shaft are rotatably connected with the protective shell through bearings, the first rotating knife is provided with a plurality of and is uniformly fixed on the outer side of the driving shaft, and the second rotating knife is provided with a plurality of and is uniformly fixed on the outer side of the driven shaft.

[0011] As a preferred scheme of the present application, the end of the driving shaft is fixedly connected with a first gear, the end of the driven shaft is fixedly connected with a second gear, the first gear and the second gear are meshed, the outer side of the first gear and the second gear is provided with a dustproof shell, and the dustproof shell is installed on the outer side of the protective shell.

[0012] As a preferred scheme of the present application, the side of the protective box near the waste outlet is provided with a waste receiving hopper, the bottom of the waste receiving hopper is communicated with the lifting device, the side of the large material outlet is provided with a large material receiving hopper, the bottom of the large material receiving hopper is communicated with a large material collecting box, the side of the medium material outlet is provided with a medium material receiving hopper, the bottom of the medium material receiving hopper is communicated with a medium material collecting box, the bottom of the protective box is fixedly connected with a small material receiving hopper, and the bottom of the small material receiving hopper is communicated with a small material collecting box.

[0013] As a preferred scheme of the present application, the waste material receiving hopper, the large material receiving hopper, the medium material receiving hopper and the small material receiving hopper are all funnel-shaped, and the large material collecting box, the medium material collecting box and the small material collecting box are all internally provided with a pullable container box.

[0014] As a preferred scheme of the present application, the bottom of the protection box is provided with a vibration motor, the output end of the vibration motor is fixedly connected with a linkage rod through a shaft coupling, the outer sides of the large material screen, the medium material screen and the small material screen are all provided with a screen frame, the large material screen and the small material screen are both right-tilted, the medium material screen is arranged between the large material screen and the small material screen and is left-tilted, and the large material screen, the medium material screen and the small material screen are all internally provided with screen holes, the screen hole diameter of the large material screen is larger than that of the medium material screen, and the screen hole diameter of the medium material screen is larger than that of the small material screen.

[0015] As a preferred scheme of the present application, the two sides of each screen frame are fixedly connected with a shaking ear, the top and the bottom of the shaking ear are both rotatably connected with a rotating foot, the inner side of the protection box is provided with a plurality of movable grooves, and the plurality of shaking ears are respectively arranged in the movable grooves, wherein an elastic piece is connected between the inner wall of the movable groove and the shaking ear.

[0016] As a preferred scheme of the present application, the outer side of the linkage rod is fixedly connected with a knocking block matched with the shaking ear, the outer side of the linkage rod is also fixedly connected with a driving bevel gear, the inner side of the protection box is rotatably connected with a plurality of beating rods, the beating rods are uniformly distributed below the large material screen, the medium material screen and the small material screen, the two ends of the beating rod are fixedly connected with a driven bevel gear, the driven bevel gear is engaged with the driving bevel gear, and the outer side of the beating rod is provided with a beating strip.

[0017] A road asphalt concrete recycling processing equipment and a processing process, comprising the road asphalt concrete recycling processing equipment as described above, and the specific processing steps are as follows: Step one: first, the old asphalt pavement is milled down and transported to the stockyard, the old asphalt concrete is input into the lifting equipment through the old material inlet, and the lifting equipment is started to drive the old material to rise and output through the old material outlet; Step two: the large and clumped asphalt concrete is crushed through the powder screening equipment; Step three: the crushed asphalt concrete is screened through the powder screening equipment; Step four: the screened asphalt concrete is respectively concentrated in different collecting boxes, and the oversized concrete blocks are returned to be remilled.

[0018] In the above technical scheme, compared with the prior art, the present application has the following technical effects and advantages: The old material is introduced into the interior of the protective shell through the old material outlet, the crushing motor is started, and the first rotary cutter and the second rotary cutter are driven to rotate relatively, so that the crushing is facilitated. The driving shaft and the second rotary cutter are both installed through screws, and the interval can be adjusted. The first fixed cutter and the second fixed cutter are installed on the inner side of the protective shell through screws, so that automatic feeding and automatic crushing are facilitated. The interval of the driving shaft and the second rotary cutter is adjusted, so that the size of the crushed particles can be adjusted. The crushed material naturally falls into the interior of the separate packaging equipment. The interior of the separate packaging equipment is provided with a powder screening device. After screening by the powder screening device, the material can be divided into four types according to the size. The oversized material is output through the waste outlet and returned to the interior of the lifting equipment through the waste receiving hopper, and then lifted back to the interior of the protective shell for secondary crushing. The oversized material is returned to the crusher for secondary crushing or even multiple crushing until it can pass through the screen. This process is fully automated and does not require manual intervention. Not only is the production efficiency greatly improved, but also it is ensured that all final product materials meet the preset particle size requirements, avoiding the mixing of unqualified materials. A high-efficiency closed-loop crushing system is formed. The large material passes through the large material screen and is output through the large material outlet, and then enters the large material storage box through the large material receiving hopper. The medium material passes through the medium material screen and is output through the medium material outlet, and then enters the medium material storage box through the medium material receiving hopper. The small material passes through the small material screen and is output, and then enters the small material storage box through the small material receiving hopper. When the material storage is full, the user can pull out the material by pulling the storage box. The interior of the storage box is provided with a glass observation window, so that the internal material condition can be observed. Through multi-stage screening and separate storage, the crushed old material can be accurately classified according to different particle size ranges. This provides high-quality standardized raw materials for the accurate proportioning design of subsequent recycled asphalt concrete, and fundamentally guarantees the rationality of the grade of recycled asphalt concrete and the final road performance. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present application. Figure 2 It is a schematic diagram of the overall structure of the old material crushing equipment of the present application. Figure 3 It is a schematic diagram of the internal structure of the old material crushing equipment of the present application. Figure 4This is a partial structural diagram of the separate packaging equipment of the present invention; Figure 5 This is a schematic diagram of the internal structure of the separate packaging equipment of the present invention; Figure 6 This is a schematic cross-sectional view of the separate packaging equipment of the present invention; Figure 7 For the present invention Figure 6 Enlarged structural diagram at point A in the middle; Figure 8 This is a schematic diagram showing the detailed structure of the large material screen of the present invention; Figure 9 For the present invention Figure 8 Enlarged structural diagram at point B; Figure 10 This is a schematic diagram of the connection structure between the striking bar and the linkage rod of the present invention.

[0021] Explanation of reference numerals in the attached figures: 001. Waste material lifting assembly; 002. Waste material crushing equipment; 003. Separate packaging equipment; 004. Powder screening equipment; 101. Base plate; 102. Lifting equipment; 103. Waste material inlet; 104. Waste material outlet; 201. Protective shell; 202. First fixed blade; 203. Second fixed blade; 204. Crushing motor; 205. Driven shaft; 206. Driven shaft; 207. Bearing; 208. First rotating blade; 209. Second rotating blade; 210. First gear; 211. Second gear; 212. Dustproof shell; 301. Protective box; 302. Waste outlet; 303. Waste receiving hopper; 304. Large material outlet; 305. Large material receiving hopper; 306. Large material collection box; 307. Medium material outlet; 308. Medium material receiving hopper; 309. Medium material collection box; 310. Small material receiving hopper; 311. Small material collection box; 401. Vibration motor; 402. Linkage rod; 403. Large material screen; 404. Medium material screen; 405. Small material screen; 406. Screen frame; 407. Vibrating ear; 408. Rotating foot; 409. Elastic element; 410. Movable groove; 411. Striking block; 412. Driving bevel gear; 413. Driven bevel gear; 414. Beating rod; 415. Beating strip. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0023] This invention provides, for example Figures 1-9 The road asphalt concrete recycling equipment shown includes: The waste material lifting assembly 001 is used to input asphalt concrete. It includes a base plate 101 and a lifting device 102 installed on the top of the base plate 101. A waste material inlet 103 is provided on the outside of the lifting device 102 and is connected to the base plate 101. A waste material outlet 104 is provided on the inner side of the top of the lifting device 102 and is connected to the lifting device 102.

[0024] The user first uses a milling machine to recycle old materials from the old road surface. The milling depth should be controlled to avoid mixing with the base material. Then, the recycled old materials are passed through the old material inlet 103 and driven by the lifting device 102 to be lifted and output from the old material outlet 104. The lifting device 102 is existing technology and will not be described in detail here. The waste material crushing equipment 002 is located on the side of the output end of the lifting equipment 102. It includes a protective shell 201, which is fixedly connected to the base plate 101 by a support rod. The protective shell 201 has a first fixed blade 202 and a second fixed blade 203 fixedly connected to its inner two sides respectively. The base plate 101 also has a first rotating blade 208 and a second rotating blade 209. The first rotating blade 208 cooperates with the first fixed blade 202, and the second fixed blade 203 cooperates with the second rotating blade 209. A crushing motor 204 is installed on the side of the protective shell 201. The output end of the crushing motor 204 is fixedly connected to a drive shaft 205 via a coupling. A driven shaft 206 is provided on the side of the drive shaft 205. Both the drive shaft 205 and the driven shaft 206 are rotatably connected to the protective shell 201 via bearings 207. Multiple first rotating blades 208 are provided and evenly fixed on the outside of the drive shaft 205, and multiple second rotating blades 209 are provided and evenly fixed on the outside of the driven shaft 206. A first gear 210 is fixedly connected to the end of the drive shaft 205, and a second gear 211 is fixedly connected to the end of the driven shaft 206. The first gear 210 and the second gear 211 are meshed. A dustproof shell 212 is provided on the outside of the first gear 210 and the second gear 211. The dustproof shell 212 is installed on the outside of the protective shell 201.

[0025] After the old material is lifted, it enters the interior of the protective shell 201 through the old material outlet 104. The crushing motor 204 is started, and the crushing motor 204 drives the active rotating shaft 205 to rotate. The active rotating shaft 205 drives the second gear 211 to rotate through the first gear 210. The second gear 211 drives the driven rotating shaft 206 to rotate. The relative rotation of the active rotating shaft 205 and the driven rotating shaft 206 drives the first rotating blade 208 and the second rotating blade 209 to rotate relative to each other. The first rotating blade 208 and the first fixed blade 202 are interleaved, and the second fixed blade 203 and the second rotating blade 209 are interleaved to facilitate crushing. The active rotating shaft 205 and the second rotating blade 209 are both installed with screws, and the spacing can be adjusted. The first fixed blade 202 and the second fixed blade 203 are installed on the inside of the protective shell 201 with screws.

[0026] The separate packaging equipment 003 is set at the bottom outlet of the protective shell 201, including a protective box 301. The protective box 301 is fixedly connected to the protective shell 201. The protective box 301 has a waste outlet 302, a large material outlet 304 and a medium material outlet 307 on its side. A waste receiving hopper 303 is installed on the side of the protective box 301 near the waste outlet 302. The bottom of the waste receiving hopper 303 is connected to the lifting device 102. A large material receiving hopper 305 is installed on the side of the large material outlet 304. The bottom of the large material receiving hopper 305 is connected to the large material collection box 306. A medium material receiving hopper 308 is installed on the side of the medium material outlet 307. The bottom of the medium material receiving hopper 308 is connected to the medium material collection box. The bottom of the collection box 309 and the protective box 301 is fixedly connected to the small material receiving hopper 310, and the bottom of the small material receiving hopper 310 is connected to the small material collection box 311; the waste material receiving hopper 303, the large material receiving hopper 305, the medium material receiving hopper 308 and the small material receiving hopper 310 are all funnel-shaped; the large material collection box 306, the medium material collection box 309 and the small material collection box 311 are all equipped with a pull-out container.

[0027] After crushing, the crushed material naturally falls into the separate packaging equipment 003. The separate packaging equipment 003 is equipped with a powder screening equipment 004. After screening by the powder screening equipment 004, the material can be divided into four types according to size. The excessively large materials are output through the waste outlet 302 and returned to the lifting equipment 102 through the waste receiving hopper 303. They are then lifted again and returned to the protective shell 201 for secondary crushing. Large pieces of material that do not meet the particle size requirements are returned to the crusher for secondary or even multiple crushing until they can pass through the screen. This process is completed automatically without human intervention, which not only greatly improves production efficiency, but also ensures that all finished products meet the preset particle size requirements and avoids the mixing of unqualified materials, thus forming a highly efficient closed-loop crushing system. Large materials pass through the large material screen 403, exit through the large material outlet 304, and enter the large material collection box 306 for storage via the large material receiving hopper 305. Medium materials pass through the medium material screen 404, exit through the medium material outlet 307, and enter the medium material collection box 309 for storage via the medium material receiving hopper 308. Small materials pass through the small material screen 405, exit through the small material receiving hopper 310, and enter the small material collection box 311 for storage. When the storage box is full, the user can pull out the material by pulling out the container. The inside of the container is equipped with a glass observation window for easy viewing of the internal material condition. Through multi-stage screening and separate collection, the crushed recycled materials can be precisely graded according to different particle size ranges. This provides high-quality standardized raw materials for the precise mix design of subsequent recycled asphalt concrete, fundamentally ensuring the gradation rationality and final road performance of recycled asphalt concrete.

[0028] The powder screening equipment 004 includes a large material screen 403, a medium material screen 404, and a small material screen 405. A vibration motor 401 is installed at the bottom of the protective box 301. The output end of the vibration motor 401 is fixedly connected to a linkage rod 402 through a coupling. Screen frames 406 are installed on the outer sides of the large material screen 403, the medium material screen 404, and the small material screen 405. The large material screen 403 and the small material screen 405 are both tilted to the right. The medium material screen 404 is located between the large material screen 403 and the small material screen 405, and the medium material screen 404 is tilted to the left. Screen holes are provided inside the large material screen 403, the medium material screen 404, and the small material screen 405. The diameter of the screen holes inside the large material screen 403 is larger than the diameter of the screen holes inside the medium material screen 404, which is larger than the diameter of the screen holes inside the small material screen 405. Each screen frame 406 has a vibrating ear 407 fixedly connected to both sides. The top and bottom of the vibrating ear 407 are rotatably connected to a rotating foot 408. The inner side of the protective box 301 has multiple movable slots 410, and the multiple vibrating ears 407 are located inside the movable slots 410 respectively. An elastic element 409 is connected between the inner wall of the movable slot 410 and the vibrating ear 407.

[0029] During screening, the user starts the vibration motor 401, which drives the linkage rod 402 to move. The linkage rod 402 then moves the vibrating ear 407, causing it to vibrate inside the movable groove 410. The vibrating ear 407, under the action of the rotating foot 408, reduces friction, facilitating vibration settings. The linkage rod 402 can simultaneously drive all three vibrating ears 407, causing the large material screen 403, medium material screen 404, and small material screen 405 to vibrate simultaneously, facilitating screening. The vibrating ear 407 is easily reset by the elastic element 409. The elastic element 409 and the rotating foot 408 help reduce friction during vibration, preventing damage and detachment of the screens after prolonged use. Simultaneous vibration of multiple screens improves efficiency.

[0030] A striking block 411 that cooperates with the vibrating ear 407 is fixedly connected to the outer side of the linkage rod 402. An active bevel tooth 412 is also fixedly connected to the outer side of the linkage rod 402. Multiple slapping rods 414 are rotatably connected inside the protective box 301. The slapping rods 414 are evenly distributed below the large material screen 403, the medium material screen 404 and the small material screen 405. Driven bevel teeth 413 are fixedly connected to both ends of the slapping rods 414. The driven bevel teeth 413 mesh with the active bevel teeth 412. Slapping strips 415 are provided on the outer side of the slapping rods 414.

[0031] The linkage rod 402 drives the active bevel gear 412 to rotate. The active bevel gear 412 drives the driven bevel gear 413 and the tapping rod 414 to drive the tapping bar 415 to continuously tap the screen, which can reduce the possibility of screen clogging.

[0032] A road asphalt concrete recycling processing equipment and processing technology, comprising the road asphalt concrete recycling processing equipment as described above, and the specific processing steps are as follows: Step 1: First, the old asphalt pavement is milled off and transported to the material yard. The old asphalt concrete is fed into the lifting equipment 102 through the old material inlet 103. The lifting equipment 102 is started to drive the old material up and output it through the old material outlet 104. Step 2: Large, clumped pieces of asphalt concrete are crushed using powder screening equipment 004; Step 3: The broken asphalt concrete is screened through the powder screening equipment 004; Step 4: Collect the sieved asphalt concrete into different aggregate boxes, and return any oversized concrete blocks for re-crushing; accurately measure the new aggregate, asphalt concrete, new asphalt, and recycling agent using an asphalt scale and recycling agent metering device. Step 5: Then heat the new aggregate to 180-200°C and the asphalt concrete to 110-130°C; Step Six: The heated new aggregate and the heated asphalt concrete are first initially mixed. The heat from the high-temperature new aggregate will be transferred to the asphalt concrete, causing its temperature to rise further. Then, the new asphalt and the recycling agent are mixed a second time and forcibly stirred to produce a uniform recycled asphalt mixture. The produced hot recycled asphalt mixture is transported to the construction site as soon as possible using insulated transport vehicles, and then paved by a paver according to the design elevation and slope.

[0033] From lifting and dumping, crushing, and screening to the automatic return of substandard materials, the entire process is seamlessly integrated, achieving a high degree of automation and continuous production. This reduces reliance on manual labor, lowers labor intensity and safety hazards, while making the pre-processing steps smooth and efficient, significantly increasing the material throughput per unit time.

[0034] By performing multi-stage screening and separate collection of recycled materials, they can be precisely applied to different levels or required asphalt concrete mix proportions based on the physical properties of recycled materials with different particle sizes. This achieves high added value and maximizes the utilization of waste asphalt concrete resources, which is in line with the concept of green and sustainable circular economy.

[0035] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A road asphalt concrete recycling processing equipment, characterized in that: include: The old material lifting assembly (001) is used to input asphalt concrete and includes a base plate (101) and a lifting device (102) installed on top of the base plate (101). The waste material crushing equipment (002) is set on the side of the output end of the lifting equipment (102), including a protective shell (201). The protective shell (201) is fixedly connected to the base plate (101) by a support rod. The protective shell (201) has a first fixed blade (202) and a second fixed blade (203) fixedly connected to the two sides inside. The base plate (101) also has a first rotating blade (208) and a second rotating blade (209). The first rotating blade (208) cooperates with the first fixed blade (202), and the second fixed blade (203) cooperates with the second rotating blade (209). The separate packaging equipment (003) is set at the bottom outlet of the protective shell (201), including a protective box (301). The protective box (301) is connected to the protective shell (201), and the protective box (301) has a waste outlet (302), a large material outlet (304) and a medium material outlet (307) on its side. The powder screening equipment (004) includes a large material screen (403), a medium material screen (404) and a small material screen (405).

2. The road asphalt concrete recycling equipment according to claim 1, characterized in that: The outer side of the lifting device (102) is provided with a waste material inlet (103), which is connected to the bottom plate (101). The inner side of the top of the lifting device (102) is provided with a waste material outlet (104), which is connected to the lifting device (102).

3. The road asphalt concrete recycling equipment according to claim 1, characterized in that: A crushing motor (204) is installed on the side of the protective shell (201). The output end of the crushing motor (204) is fixedly connected to a drive shaft (205) through a coupling. A driven shaft (206) is provided on the side of the drive shaft (205). Both the drive shaft (205) and the driven shaft (206) are rotatably connected to the protective shell (201) through bearings (207). Multiple first rotating blades (208) are provided and evenly fixed on the outside of the drive shaft (205). Multiple second rotating blades (209) are provided and evenly fixed on the outside of the driven shaft (206).

4. The road asphalt concrete recycling equipment according to claim 3, characterized in that: The end of the driving shaft (205) is fixedly connected to a first gear (210), and the end of the driven shaft (206) is fixedly connected to a second gear (211). The first gear (210) and the second gear (211) are meshed together. A dust cover (212) is provided on the outside of the first gear (210) and the second gear (211). The dust cover (212) is installed on the outside of the protective shell (201).

5. The road asphalt concrete recycling equipment according to claim 1, characterized in that: A waste receiving hopper (303) is provided on the side of the protective box (301) near the waste outlet (302). The bottom of the waste receiving hopper (303) is connected to the lifting device (102). A large material receiving hopper (305) is provided on the side of the large material outlet (304). The bottom of the large material receiving hopper (305) is connected to the large material collection box (306). A medium material receiving hopper (308) is provided on the side of the medium material outlet (307). The bottom of the medium material receiving hopper (308) is connected to the medium material collection box (309). A small material receiving hopper (310) is fixedly connected to the bottom of the protective box (301). The bottom of the small material receiving hopper (310) is connected to the small material collection box (311).

6. The road asphalt concrete recycling equipment according to claim 5, characterized in that: The waste receiving hopper (303), large material receiving hopper (305), medium material receiving hopper (308) and small material receiving hopper (310) are all funnel-shaped. The large material collection box (306), medium material collection box (309) and small material collection box (311) are all equipped with pull-out containers inside.

7. The road asphalt concrete recycling equipment according to claim 1, characterized in that: A vibration motor (401) is installed at the bottom of the protective box (301). The output end of the vibration motor (401) is fixedly connected to a linkage rod (402) through a coupling. Screen frames (406) are installed on the outer sides of the large material screen (403), medium material screen (404) and small material screen (405). The large material screen (403) and small material screen (405) are both tilted to the right. The medium material screen (404) is located between the large material screen (403) and small material screen (405), and the medium material screen (404) is tilted to the left. Screen holes are provided inside the large material screen (403), medium material screen (404) and small material screen (405). The diameter of the screen hole inside the large material screen (403) is larger than the diameter of the screen hole inside the medium material screen (404) is larger than the diameter of the screen hole inside the small material screen (405).

8. The road asphalt concrete recycling equipment according to claim 7, characterized in that: Each of the screen frame frames (406) is fixedly connected to two sides with a vibrating ear (407). The top and bottom of the vibrating ear (407) are rotatably connected with a rotating foot (408). The inner side of the protective box (301) is provided with multiple movable slots (410). The multiple vibrating ears (407) are respectively located inside the movable slots (410). An elastic element (409) is connected between the inner wall of the movable slot (410) and the vibrating ear (407).

9. The road asphalt concrete recycling equipment according to claim 7, characterized in that: The outer side of the linkage rod (402) is fixedly connected to a striking block (411) that cooperates with the shaking ear (407). The outer side of the linkage rod (402) is also fixedly connected to an active bevel tooth (412). The inside of the protective box (301) is rotatably connected to multiple slapping rods (414). The slapping rods (414) are evenly distributed below the large material screen (403), the medium material screen (404), and the small material screen (405). The two ends of the slapping rod (414) are fixedly connected to driven bevel teeth (413). The driven bevel teeth (413) mesh with the active bevel teeth (412). The outer side of the slapping rod (414) is provided with slapping strips (415).

10. A road asphalt concrete recycling processing equipment and processing technology, comprising the road asphalt concrete recycling processing equipment as described in any one of claims 1-8, characterized in that: The specific processing steps are as follows: Step 1: First, the old asphalt pavement is milled off and transported to the material yard. The old asphalt concrete is fed into the lifting equipment (102) through the old material inlet (103). The lifting equipment (102) is started to drive the old material to rise and output it through the old material outlet (104). Step 2: The large, clumped pieces of asphalt concrete are crushed using a powder screening device (004); Step 3: The broken asphalt concrete is screened through the powder screening equipment (004); Step 4: Collect the sieved asphalt concrete into different aggregate boxes, and return any oversized concrete blocks for re-crushing.

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