Method and device for producing high-toughness ultrathin asphalt wearing layer

Abstract

The invention discloses a high-toughness ultrathin asphalt wearing layer production method and device, and relates to the technical field of asphalt manufacturing, the device comprises a moving unit, and the moving unit comprises a cart, a working window arranged on the surface of the cart in a penetrating manner, a pair of guide rods arranged on one side of the surface of the cart, screw rod seats arranged on the tops of the guide rods, and handles arranged on the side walls of the guide rods. The asphalt wearing layer has the beneficial effects that the asphalt wearing layer has the characteristics of better anti-rutting performance, low maintenance cost under a long-term scale, strong adaptability to climate, ultrathin thickness and high toughness. In addition, the adhesion position of the lower layer structure of the asphalt pavement can be separated in a softer mode for a thin core sample, and the core sample clamped into the sampling barrel can automatically fall off without manual intervention, so that the integrity of the core sample is guaranteed, and a high-standard sample is provided for detection.

Description

Technical Field

[0001] The invention relates to the technical field of asphalt manufacturing, in particular to a method and device for producing a high-toughness ultra-thin asphalt wearing layer. Background Art

[0002] Asphalt wear layer is a technology used in road maintenance and repair. It is a thin layer of asphalt mixture laid on the existing road surface. The typical asphalt wear layer thickness is usually between 4-5 cm, the material consumption is large, and the construction and maintenance cycles are long. In addition, it is easy to crack under low temperature and repeated loads, and it is easy to produce rutting under high temperature. Although the construction cost of traditional asphalt wear layer is low, the subsequent maintenance cost is high. Therefore, a high-toughness ultra-thin asphalt wear layer is needed to replace the traditional asphalt wear layer.

[0003] In order to ensure the quality of the finished product of high-toughness ultra-thin asphalt wear layer, sampling and testing are required during the construction process to timely discover problems and adjust the production process, such as affecting the crack resistance and bonding strength of the high-toughness; affecting the compaction, thickness, and water permeability of the ultra-thin layer; or the asphalt content gradation, pavement structure depth, etc. Therefore, this process is an indispensable part of the asphalt production process. When general core drilling equipment is used for sampling high-toughness ultra-thin wear layer, due to the thin and fragile samples, the core samples will be broken or deformed during extraction, so the above problems need to be solved urgently. Summary of the invention

[0004] In view of the above problems or problems existing in the prior art, the present invention is proposed.

[0005] Therefore, the purpose of the present invention is to provide a method and device for producing a high-toughness ultra-thin asphalt wear layer, which can solve the problems of poor durability, weak rutting resistance and high subsequent maintenance cost of traditional asphalt wear layers, and also solve the problem that traditional core drilling equipment is easily broken and deformed when sampling high-toughness ultra-thin asphalt wear layers. In addition, it also solves the problem that core samples are easily stuck in the sampling tube or adhere to the underlying structure during traditional core sample extraction.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a high-toughness ultra-thin asphalt wearing layer production device, which includes a mobile unit, including a cart, a working window penetrating and arranged on the surface of the cart, a pair of guide rods arranged on one side of the surface of the cart, a screw rod seat arranged on the top of the guide rod, and a handle arranged on the side wall of the guide rod; The lifting unit comprises a screw rod penetrating the center of the screw rod seat, a movable seat sleeved on the guide rod and the outer wall of the screw rod, and a C-shaped platform arranged on one side of the movable seat; The sampling unit includes a motor arranged on the top of the C-shaped table, a first ratchet plate arranged on the end of the motor shaft, a second ratchet plate arranged below the first ratchet plate, a transmission rod and a vibration ring arranged through the lower end of the C-shaped table, a first spring arranged below the second ratchet plate, a second spring arranged below the vibration ring, and a sampling tube sleeved on the bottom of the transmission rod.

[0007] As a preferred solution of the high-toughness ultra-thin asphalt wearing layer production device described in the present invention, wherein: the screw seat is snap-connected with the screw; the bottom of the screw is engaged with the surface of the trolley; the movable seat is threadedly connected with the screw.

[0008] As a preferred solution of the high-toughness ultra-thin asphalt wear layer production device described in the present invention, wherein: the C-shaped platform includes an upper platform and a lower platform; the motor is fixedly connected to the upper platform and the motor shaft end passes through the upper platform; the lower platform is clamped and connected to the transmission rod; the lower end of the vibration ring passes through the lower platform.

[0009] As a preferred solution of the high-toughness ultra-thin asphalt wear layer production device described in the present invention, the first ratchet plate includes a first limiting tooth arranged at its bottom, and a limiting bolt penetrating the side wall of the first ratchet plate; the first ratchet plate is sleeved on the shaft end of the motor and is fixed to the shaft end of the motor through the lateral limiting bolt.

[0010] As a preferred solution of the high-toughness ultra-thin asphalt wearing layer production device described in the present invention, the second ratchet plate includes a second limiting tooth arranged on the top thereof, a keyway arranged on the inner wall of the second ratchet plate, and a cutter head arranged on the bottom of the second ratchet plate.

[0011] As a preferred solution of the high-toughness ultra-thin asphalt wearing layer production device of the present invention, the transmission rod includes a fixed key arranged on its outer wall, and a threaded column arranged on the bottom of the transmission rod.

[0012] As a preferred solution of the high-toughness ultra-thin asphalt wearing layer production device of the present invention, the vibration ring includes a plurality of blade grooves arranged on its upper surface, and a plurality of hook-shaped legs arranged on the bottom of the vibration ring.

[0013] As a preferred solution of the high-toughness ultra-thin asphalt wearing layer production device of the present invention, wherein: the sampling tube includes an extension ring arranged on its upper end surface; the upper end of the sampling tube cooperates with the threaded column.

[0014] In order to solve the above technical problems, the present invention further provides the following technical solutions: A method for producing a high-toughness ultra-thin asphalt wearing layer, which comprises S1, preparing modified asphalt and pretreating mineral components, wherein the mineral components include coarse aggregate, fine aggregate, mineral powder and toughening fiber; S2. Control the amount of modified asphalt and mineral components according to the weight ratio; S3, mixing the modified asphalt and the mineral component at a specific temperature to obtain a mixture; S4. Spread and compact the mixture.

[0015] As a preferred embodiment of the method for producing a high-toughness ultra-thin asphalt wearing layer of the present invention, the preparation of modified asphalt includes taking road petroleum asphalt as a matrix, adding SBS modifier and performing high-speed shearing and maturation; the pretreatment specifically includes drying the mineral component; The weight ratio includes 5.8% to 6.5% of modified asphalt, 8% to 12% of mineral powder, 0.3% to 0.4% of toughening fiber, and the rest is coarse aggregate and fine aggregate; The mixing comprises dry-mixing the mineral components at 165-175° C., and then adding modified asphalt and toughening fiber for wet mixing to obtain a mixture.

[0016] Beneficial effects of the present invention: The asphalt wear layer of the present invention has better anti-rutting performance, low maintenance cost in the long term, strong adaptability to climate, and ultra-thin and high-toughness characteristics. In addition, a thinner core sample can be separated in a more gentle manner from the adhesion of the lower structure of the asphalt pavement, and the core sample stuck in the sampling tube can be automatically removed without manual intervention, thereby ensuring the integrity of the core sample, providing a high-standard sample for testing, and ensuring that the core sample will not be damaged or deformed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is an overall three-dimensional schematic diagram of the present invention.

[0019] Figure 2 It is a top view of the present invention.

[0020] Figure 3 For the present invention Figure 2 AA full section view.

[0021] Figure 4 For the present invention Figure 2 Full cross-section of BB.

[0022] Figure 5 It is a structural diagram of the sampling unit of the present invention.

[0023] Figure 6 It is an exploded view of the sampling unit of the present invention.

[0024] Figure 7 It is a production flow chart of the present invention. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0028] Example 1

[0029] Reference Figure 7 , which is the first embodiment of the present invention, provides a method for producing a high-toughness ultra-thin asphalt wearing layer, which comprises: S1. preparing modified asphalt and pretreating mineral components, wherein the mineral components include coarse aggregate, fine aggregate, mineral powder and toughening fiber; S2. Control the amount of modified asphalt and mineral components according to the weight ratio; S3, mixing the modified asphalt and the mineral component at a specific temperature to obtain a mixture; S4. Spread and compact the mixture.

[0030] Furthermore, the preparation of modified asphalt includes taking road petroleum asphalt as a matrix, adding SBS modifier and performing high-speed shearing and maturation; the pretreatment specifically includes drying the mineral component; The weight ratio includes: modified asphalt 5.8% to 6.5%, mineral powder 8% to 12%, toughening fiber 0.3% to 0.4%, and the rest is coarse aggregate and fine aggregate; The mixing step is to dry-mix the mineral components at 165-175° C., then add the modified asphalt and toughening fiber for wet mixing to obtain a mixture.

[0031] It should be noted that the coarse aggregate is made of high-quality basalt or diabase crushed stone, which has excellent mechanical strength and wear resistance, with a crushing value not exceeding 20%, a Los Angeles abrasion value controlled below 18%, and a needle-like particle content strictly controlled within 10%. The fine aggregate uses high-quality machine-made sand, and its sand equivalent must reach more than 65% to ensure good adhesion with asphalt. The mineral powder uses high-calcium rock powder, and its particle size needs to ensure that the mass percentage passing the 0.075mm sieve is not less than 80% to provide a good filling effect.

[0032] In terms of asphalt materials, No. 70 road petroleum asphalt is used as the matrix and modified with linear SBS modifier. The amount of modifier added is 4.5% to 5.5%, and high-quality SBS with a molecular weight between 80,000 and 120,000 and a butadiene content of not less than 68% is selected. During the modification process, the base asphalt is first heated to 175±5℃, and then fully mixed with SBS in a high-speed shearing machine. The shear speed is controlled at 4000-6000r / min, the temperature is maintained between 175-185℃, and the shear time is 40-50 minutes. Subsequently, a 1-2 hour aging process is carried out, the temperature is controlled at 170-180℃, and the stirring speed is maintained at 500-800r / min to ensure that the modifier is fully combined with the asphalt.

[0033] In order to further improve the toughness and crack resistance of the mixture, wood fiber is used as toughening fiber in the mix design, with the fiber length controlled at 1.1±0.5mm and the diameter at 45±15μm. The fiber addition amount is 0.3% to 0.4% of the total mass of the mixture. These fibers can form a three-dimensional network structure in the mixture, significantly improving the toughness and crack resistance of the material.

[0034] In the production process of the mixture, the various mineral components must first be dried, and the temperature must be controlled at 165-175℃ to ensure that the moisture content of the minerals is reduced to below 0.5%. Then the ingredients are batched and mixed. The entire mixing process is divided into two stages: dry mixing and wet mixing. The dry mixing stage lasts for 5-8 seconds, and the main purpose is to fully mix the various minerals. The wet mixing stage is carried out after the modified asphalt is added, and lasts for 20-25 seconds. During this period, wood fiber is added simultaneously to ensure that the various components are fully mixed. The temperature of the entire mixing process is strictly controlled between 165-175℃. This temperature range can ensure sufficient workability without causing aging damage to the modified asphalt.

[0035] The quality of the finished mixture needs to be controlled. The Marshall stability requirement is not less than 6.0kN, the flow value is controlled between 2-4mm, and the porosity is kept in the range of 3% to 5%. The dynamic stability requirement is not less than 3000 times / mm, which is crucial for the performance of the ultra-thin wear layer. At the same time, the low-temperature bending strength needs to reach more than 5MPa, and the low-temperature bending strain is not less than 2000με to ensure good low-temperature performance.

[0036] During paving, the mixture is transported to the paver for even paving, then compacted in sections by a roller, and finally rolled until the set compaction degree is reached.

[0037] In summary, the asphalt wearing layer designed in this paper has the characteristics of high toughness, high durability and ultra-thinness.

[0038] Example 2

[0039] Reference Figure 1 to Figure 6 , which is the second embodiment of the present invention, and is different from the first embodiment in that it also includes a moving unit 1, including a trolley 11, a working window 12 penetrating and arranged on the surface of the trolley 11, a pair of guide rods 13 arranged on one side of the surface of the trolley 11, a screw rod seat 14 arranged on the top of the guide rod 13, and a handle 15 arranged on the side wall of the guide rod 13; The lifting unit 2 includes a screw rod 21 penetrating the center of the screw rod seat 14, a moving seat 22 sleeved on the guide rod 13 and the outer wall of the screw rod 21, and a C-shaped platform 23 arranged on one side of the moving seat 22; The sampling unit 3 includes a motor 31 arranged on the top of the C-shaped table 23, a first ratchet plate 32 arranged at the axial end of the motor 31, a second ratchet plate 33 arranged below the first ratchet plate 32, a transmission rod 34 and a vibration ring 35 arranged at the lower end of the C-shaped table 23, a first spring 36 arranged below the second ratchet plate 33, a second spring 37 arranged below the vibration ring 35, and a sampling tube 38 sleeved on the bottom of the transmission rod 34.

[0040] Furthermore, the screw seat 14 is engaged with the screw 21 ; the bottom of the screw 21 is engaged with the surface of the cart 11 ; and the movable seat 22 is threadedly connected with the screw 21 .

[0041] Furthermore, the C-shaped platform 23 includes an upper platform 231 and a lower platform 232 ; the motor 31 is fixedly connected to the upper platform 231 and the shaft end of the motor 31 passes through the upper platform 231 ; the lower platform 232 is engaged with the transmission rod 34 ; and the lower end of the vibration ring 35 passes through the lower platform 232 .

[0042] Furthermore, the first ratchet plate 32 includes a first limiting tooth 321 arranged at its bottom, and a limiting bolt 322 penetrating the side wall of the first ratchet plate 32; the first ratchet plate 32 is sleeved on the shaft end of the motor 31 and fixed to the shaft end of the motor 31 by the lateral limiting bolt 322.

[0043] Furthermore, the second ratchet plate 33 includes a second limiting tooth 331 disposed on the top thereof, a key groove 332 disposed on the inner wall of the second ratchet plate 33 , and a cutter head 333 disposed on the bottom of the second ratchet plate 33 .

[0044] Furthermore, the transmission rod 34 includes a fixing key 341 disposed on an outer wall thereof, and a threaded column 342 disposed on the bottom of the transmission rod 34 .

[0045] Furthermore, the vibration ring 35 includes a plurality of blade grooves 351 disposed on the upper surface thereof, and a plurality of hook-shaped legs 352 disposed on the bottom of the vibration ring 35 .

[0046] Furthermore, the sampling tube 38 includes an extension ring 381 disposed on its upper end surface; the upper end of the sampling tube 38 cooperates with the threaded column 342 .

[0047] It should be noted that four universal wheels are fixed around the bottom of the cart 11 for moving the entire production device. Two symmetrically distributed guide rods 13 are fixed on one side of the upper surface of the cart 11, and a screw seat 14 is fixed on the top of the two guide rods 13. The middle of the screw seat 14 is through, and a circular groove is provided in the middle of the through inner cavity for engaging with the disc at the upper end of the screw 21, so that the screw 21 can rotate inside the screw seat 14 without falling out. In addition, in order to ensure the stability and load-bearing capacity of the rotation of the screw 21, the bottom of the screw 21 is inserted into the cart 11, so that the upper and lower ends of the screw 21 are evenly stressed. On the other side of the upper surface of the cart 11, a through working window 12 is provided, which is adjacent to the two guide rods 13 and can facilitate sampling of the equipment.

[0048] A handle 15 is fixed on one side of the two guide rods 13 , and the direction and shape of the handle 15 can be fixed according to one's own preferences, as long as it is not fixed on the rod body of the guide rod 13 to prevent interference with the use of the guide rod 13 .

[0049] Preferably, through holes are respectively provided at both ends of the movable seat 22, and are sleeved on the rod body of the guide rod 13, and the two are movably connected. A through threaded hole is provided in the center of the movable seat 22, which is threadedly matched with the screw rod 21. Therefore, when the screw rod 21 rotates, the movable seat 22 can move up or down accordingly.

[0050] Preferably, the middle section of the C-shaped platform 23 is fixed to the side wall of the mobile seat 22 by bolts, and can move with the mobile seat 22. The C-shaped platform 23 is composed of an upper platform 231 and a lower platform 232. In addition, a water tank is fixed on the side wall of the mobile seat 22 facing away from the C-shaped platform 23. In this embodiment, the connection and fixation are carried out in the form of dovetail groove clamping. It can also be fixed by other methods such as glue connection, cable tie binding, bolt connection, etc. The water tank can store cooling water for sampling of asphalt pavement, which can be convenient for personnel to carry and prepare in advance. Usually, when using traditional production equipment, personnel need to carry additional water storage tanks and find water sources for water filling, which will increase the workload of operators.

[0051] Preferably, the motor 31 is fixed on the upper surface of the upper platform 231, and the shaft end of the motor 31 faces downward and passes through the upper platform 231. The upper end of the first ratchet disc 32 is provided with a blind hole, which can be sleeved on the shaft end of the motor 31, and the two can be fastened by the limit bolt 322 on the side wall of the first ratchet disc 32. This fastening method is more common, and usually an axial plane is provided on the shaft end of the motor 31 to achieve a stronger fastening effect. Therefore, when the motor 31 rotates, the first ratchet disc 32 can rotate with it.

[0052] Preferably, a through hole is opened on the surface of the lower platform 232 to facilitate the transmission rod 34 to pass through. In addition, a circular groove is also opened in the middle position of the hole to engage with the disc at the waist of the transmission rod 34, so that the transmission rod 34 can only rotate but not move axially.

[0053] A strip-shaped fixed key 341 is fixed on the side wall of the transmission rod 34, and the fixed key 341 is located above the disc on the waist of the transmission rod 34. A through hole is provided in the middle of the second ratchet plate 33, which can be sleeved on the rod body of the transmission rod 34. In addition, a through key slot 332 is correspondingly provided on the inner wall of the second ratchet plate 33, which can cooperate with the fixed key 341. Therefore, the second ratchet plate 33 can drive the transmission rod 34 to rotate and can also move along the axial direction of the transmission rod 34.

[0054] Preferably, the first limiting teeth 321 distributed circumferentially at the bottom of the first ratchet disk 32 and the second limiting teeth 331 distributed at the upper end of the second ratchet disk 33 have the same tooth shape, both of which are approximately right-angled triangles, can be interlocked with each other, and make the first ratchet disk 32 and the second limiting teeth 331 have the characteristics of one-way transmission, that is, the first ratchet disk 32 can drag the second ratchet disk 33 to rotate, and when the first ratchet disk 32 rotates in the opposite direction, the second ratchet disk 33 cannot rotate.

[0055] Preferably, the vibration ring 35 is an annular structure, and the upper surface of the vibration ring 35 is provided with dense and circumferentially distributed blade grooves 351, which are V-shaped and have a small angle. The second ratchet plate 33 is also fixed with circumferentially distributed cutter heads 333, and the bottom of the cutter heads 333 is flat. Therefore, the cutter heads 333 can be inserted into the blade grooves 351.

[0056] It should be noted that, in general, the cutter head 333 is slightly attached to the blade slot 351, ensuring that when the second ratchet plate 33 is driven to rotate by the first ratchet plate 32, the cutter head 333 will not be limited by the blade slot 351. When the second ratchet plate 33 moves downward, the cutter head 333 is inserted into the blade slot 351, so that the second ratchet plate 33 is locked.

[0057] A plurality of circumferentially distributed hook legs 352 are fixed to the bottom of the vibration ring 35. The hook legs 352 completely penetrate the lower platform 232, so that the vibration ring 35 can only move axially but cannot rotate. The lowermost end of the hook legs 352 has a hook structure and points to the axis position.

[0058] Preferably, a threaded hole is provided at the top of the sampling barrel 38 so that the sampling barrel 38 can be fixed to the transmission rod 34. In addition, a circle of extension ring 381 is fixed on the outer wall of the upper end of the sampling barrel, and the hook-shaped leg 352 just hooks the extension ring 381, which can make the connection between the sampling barrel 38 and the transmission rod 34 more reliable.

[0059] Preferably, a first spring 36 is fixed between the second ratchet disc 33 and the surface of the lower platform 232, so that the first ratchet disc 32 and the second ratchet disc 33 are generally engaged to establish transmission. When the first ratchet disc 32 rotates in the opposite direction, the first limit tooth 321 forces the second limit tooth 331 to move downward, and as the first ratchet disc 32 continues to flip, the second ratchet disc 33 moves upward again under the action of the first spring 36, and so on and so forth, thereby forming high-frequency reciprocating oscillation. In reality, friction is generated under the contact between the first limit tooth 321 and the second limit tooth 331, so that even if the first ratchet disc 32 rotates in the opposite direction, it is possible that the second ratchet disc 33 may be driven to rotate, thereby failing to achieve the effect of the reciprocating oscillation of the second ratchet disc 33.

[0060] Therefore, a second spring 37 is also fixed between the bottom of the vibration ring 35 and the lower platform 232. Since the position of the sampling tube 38 relative to the lower platform 232 is fixed, the vibration ring 35 can only be lifted to a limited height, that is, the vibration ring 35 is close to the bottom of the cutter head 333 without touching it. Continuing from the above, when the first ratchet disk 32 rotates in the opposite direction, as long as the second ratchet disk 33 is slightly driven downward, the cutter head 333 will be inserted into the blade groove 351. At this time, the vibration ring 35 can limit the second ratchet disk 33. As the first ratchet disk 32 rotates, the vibration ring 35 can gradually amplify the limiting effect of the second ratchet disk 33 until the second ratchet disk 33 is reset next time, thereby ensuring the stable reciprocating oscillation of the second ratchet disk 33 instead of accompanying rotation.

[0061] Under the reciprocating vibration of the second ratchet plate 33 , the vibration ring 35 also reciprocates up and down accordingly. At this time, the hook-shaped legs 352 will continuously hit the extension ring 381 to interfere with the sampling tube 38 .

[0062] In summary, when sampling, the motor 31 is turned on, and the sampling barrel 38 rotates under the mutual engagement of the first ratchet disc 32 and the second ratchet disc 33. At this time, the personnel can control the sampling barrel 38 to move downward and cut the asphalt pavement by rotating the screw 21 through the tool. This process requires water injection cooling, and the cutting is stopped when it is cut to about 3 cm. Because the asphalt layer is thinner, it is more likely to break and deform than the traditional core sample, causing the sample to fail. After cutting, three situations will occur: the core sample remains in the sampling pit and has been separated from the lower structure, the core sample is stuck in the sampling barrel 38, or the core sample and the lower structure are still in a bonding state. Therefore, the motor 31 can be reversed at this time, so that the hook-shaped leg 352 hits the sampling barrel 38 at a high speed, thereby generating a higher vibration. Since the position of the sampling barrel 38 is determined, there will be no sudden force, which will damage the core sample. This high-frequency oscillation will cause the bonded core sample to fatigue the bonding surface within a small range, and finally the core sample will be smoothly disconnected. If the core sample is only engaged in the sampling tube 38 when the sampling tube 38 is being lifted, the motor 31 is also reversed to generate vibrations, and the core sample falls out.

[0063] In summary, a more gentle method can be used to separate the adhesion of the lower structure of the asphalt pavement for thinner core samples, and the core samples stuck in the sampling tube can be automatically dropped off without human intervention, thereby ensuring the integrity of the core samples, providing high-standard samples for testing, and ensuring that the core samples will not be damaged or deformed.

[0064] It is important to note that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A high-toughness ultra-thin asphalt wearing layer production device, characterized by: include, A mobile unit (1) comprises a trolley (11), a working window (12) extending through the surface of the trolley (11), a pair of guide rods (13) arranged on one side of the surface of the trolley (11), a screw seat (14) arranged on the top of the guide rods (13), and a handle (15) arranged on the side wall of the guide rods (13); The lifting unit (2) comprises a screw rod (21) penetrating the center of the screw rod seat (14), a movable seat (22) sleeved on the guide rod (13) and the outer wall of the screw rod (21), and a C-shaped platform (23) arranged on one side of the movable seat (22); The sampling unit (3) comprises a motor (31) arranged at the top of the C-shaped platform (23), a first ratchet plate (32) arranged at the shaft end of the motor (31), a second ratchet plate (33) arranged below the first ratchet plate (32), a transmission rod (34) and a vibration ring (35) arranged through the lower end of the C-shaped platform (23), a first spring (36) arranged below the second ratchet plate (33), a second spring (37) arranged below the vibration ring (35), and a sampling tube (38) sleeved on the bottom of the transmission rod (34).

2. The high-toughness ultra-thin asphalt wearing layer production device according to claim 1, characterized in that: The screw rod seat (14) is snap-connected with the screw rod (21); the bottom of the screw rod (21) is engaged with the surface of the trolley (11); and the movable seat (22) is threadedly connected with the screw rod (21).

3. The high-toughness ultra-thin asphalt wearing layer production device according to claim 2, characterized in that: The C-shaped platform (23) comprises an upper platform (231) and a lower platform (232); the motor (31) is fixedly connected to the upper platform (231) and the shaft end of the motor (31) passes through the upper platform (231); the lower platform (232) is snap-connected to the transmission rod (34); and the lower end of the vibration ring (35) passes through the lower platform (232).

4. The high-toughness ultra-thin asphalt wearing layer production device according to claim 3, characterized in that: The first ratchet plate (32) comprises a first limiting tooth (321) arranged at the bottom thereof, and a limiting bolt (322) penetrating the side wall of the first ratchet plate (32); the first ratchet plate (32) is sleeved on the shaft end of the motor (31) and is fixed to the shaft end of the motor (31) via the lateral limiting bolt (322).

5. The high-toughness ultra-thin asphalt wearing layer production device according to claim 4, characterized in that: The second ratchet disc (33) comprises a second limiting tooth (331) arranged on the top thereof, a keyway (332) arranged on the inner wall of the second ratchet disc (33), and a cutter head (333) arranged on the bottom of the second ratchet disc (33).

6. The high-toughness ultra-thin asphalt wearing layer production device according to claim 5, characterized in that: The transmission rod (34) comprises a fixing key (341) arranged on an outer wall thereof, and a threaded column (342) arranged at the bottom of the transmission rod (34).

7. The high-toughness ultra-thin asphalt wearing layer production device according to claim 6, characterized in that: The vibration ring (35) comprises a plurality of blade grooves (351) arranged on its upper surface, and a plurality of hook-shaped legs (352) arranged on the bottom of the vibration ring (35).

8. The high-toughness ultra-thin asphalt wearing layer production device according to claim 7, characterized in that: The sampling tube (38) comprises an extension ring (381) arranged on its upper end surface; the upper end of the sampling tube (38) cooperates with the threaded column (342).

9. A method for producing a high-toughness ultra-thin asphalt wearing layer, characterized in that: include, S1. preparing modified asphalt and pretreating mineral components, wherein the mineral components include coarse aggregate, fine aggregate, mineral powder and toughening fiber; S2. Control the amount of modified asphalt and mineral components according to the weight ratio; S3, mixing the modified asphalt and the mineral component at a specific temperature to obtain a mixture; S4. Spread and compact the mixture.

10. The method for producing a high-toughness ultra-thin asphalt wearing layer according to claim 9, characterized in that: The preparation of modified asphalt includes taking road petroleum asphalt as a matrix, adding SBS modifier and performing high-speed shearing and maturation; the pretreatment specifically includes drying the mineral component; The weight ratio includes 5.8% to 6.5% of modified asphalt, 8% to 12% of mineral powder, 0.3% to 0.4% of toughening fiber, and the rest is coarse aggregate and fine aggregate; The mixing comprises dry mixing the mineral components at 165-175° C., and then adding modified asphalt and toughening fiber for wet mixing to obtain a mixture.

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