Layered stripping device and method for aged asphalt on surface of recycled asphalt pavement material

Abstract

The invention belongs to the technical field of asphalt recycling, and discloses a recycled asphalt pavement material surface aged asphalt layering stripping device and method.The recycled asphalt pavement material surface aged asphalt layering stripping device comprises a rack, a mounting base is fixedly mounted at the top end of the rack, a double-shaft motor is fixedly mounted at the top end of the mounting base, and power assemblies are mounted at the front end and the rear end of the double-shaft motor correspondingly; oil storage tanks are installed at the left end and the right end of the installation base correspondingly, oil pumps are arranged in the oil storage tanks, the oil storage tanks are filled with hydraulic oil, and the bottom ends of the oil storage tanks fixedly communicate with oil conveying pipes correspondingly. By means of active pumping of hydraulic oil and cooperation of the power assembly and the adjusting assembly, the device can adjust the chiseling depth of the stripping assembly without shutdown, the whole process can be automatically completed, the chiseling depth can be dynamically adjusted in the whole recycling process, the situation that a traditional device needs to be shut down for adjustment is effectively avoided, and the production efficiency is improved. And the adjusting efficiency is low, and the overall recovery efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of asphalt recycling, and particularly relates to a device and method for layer-by-layer stripping of aged asphalt on the surface of recycled asphalt pavement materials. Background Art

[0002] Recycled asphalt pavement materials (RAP) refer to materials that are obtained by recycling old asphalt pavements (such as waste materials after road milling and crushing), and are reused for road construction after being processed. Its main components include the original asphalt binder and aggregates (crushed stones, sand, etc.). The recycling process of RAP usually includes steps such as old pavement milling, crushing, and screening, and finally forms reusable mixtures. During the process of recycling old asphalt, an aged asphalt layer-by-layer peeling device is usually used to assist in the peeling process of old asphalt.

[0003] During the process of layer-by-layer stripping of aged asphalt, solvent dissolution method devices and mechanical stripping method devices are mainly used for asphalt layer-by-layer stripping. Among them, although the solvent dissolution method has higher separation accuracy, its stripping efficiency is lower, and it requires handling toxic solvents, so it is no longer used in many occasions. The current mainstream method is the mechanical stripping method, that is, a shovel is directly used to layer-by-layer scrape the road surface, and a negative pressure or brush device is used to collect the crushed materials. However, when this stripping device is actually used, it is necessary to frequently adjust the device to meet the stripping requirements at different depths. Each adjustment requires manual adjustment after the device is shut down. When stripping in batches, the efficiency is low.

[0004] At the same time, the current mechanical stripping method mainly realizes the stripping operation through the reciprocating movement of the shovel. However, when no stripping is carried out, the shovel is still in an inclined state at this time. If the shovel contacts the asphalt at this time, it will cause mis-stripping, and at the same time, it will also cause excessive wear of the shovel, and improvement is urgently needed. Summary of the Invention

[0005] The purpose of the present invention is to provide a device and method for layer-by-layer stripping of aged asphalt on the surface of recycled asphalt pavement materials to solve the problems raised in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solution: A device for layer-by-layer peeling of aged asphalt on the surface of recycled asphalt pavement materials, comprising a frame, on the top end of which is fixedly installed a mounting seat, on the top end of which is fixedly installed a double-shaft motor, with power components installed at both the front and rear ends of the double-shaft motor, oil storage tanks installed at both the left and right ends of the mounting seat, an oil pump built inside the oil storage tank, hydraulic oil filled inside the oil storage tank, oil delivery pipes fixedly connected to the bottom ends of the oil storage tanks, longitudinal guide rails installed on both the front and rear sides of the mounting seat, an installation frame fixedly connected between the two longitudinal guide rails, an adjustment component fixedly sleeved in the middle of the installation frame, three-way valves fixedly connected to both the left and right sides near the top end of the adjustment component, fixedly connected between the relatively far sides of the two three-way valves and the oil delivery pipes, oil discharge hoses fixedly connected to the bottom ends of the three-way valves, a self-adjustment component fixedly connected to the bottom end of the adjustment component, a bottom plate connected to the bottom end of the self-adjustment component, the left and right sides near the top end of the self-adjustment component being connected to the oil discharge hoses, peeling components installed on both the left and right sides of the bottom plate, the left and right sides at the bottom end of the self-adjustment component being connected to the peeling components, a negative pressure head fixedly installed at the bottom end of the self-adjustment component and located below the bottom plate, negative pressure boxes installed on both the front and rear sides of the bottom plate, and negative pressure pipes fixedly connected between the negative pressure boxes and the negative pressure head.

[0007] When separating and peeling the road surface asphalt, the device can be moved directly above the ground where the asphalt is to be recycled, and the device is first connected to an external power source. In the initial state, the peeling component is in the un-recycled state, and at the same time, the negative pressure head is also at the highest point position, that is, in the retracted state, completing the preparation before recycling.

[0008] As a further technical solution of the present invention, the power component includes a mounting shaft, with guide blocks fixedly installed at both the front and rear ends of the mounting shaft, the guide blocks being movably clamped with the longitudinal guide rails, and the guide blocks moving up and down relative to the longitudinal guide rails.

[0009] As a further technical solution of the present invention, a mounting plate is fixedly installed between the bottom ends of the two guide blocks, and the middle of the bottom end of the mounting plate is connected to the top end of the adjustment component.

[0010] When the device is in the recycling state, the double-shaft motor can be started. At this time, the front and rear second connecting rods can be driven to rotate, and at the same time, the first connecting rod is driven to rotate, and an upward pulling force and a downward pushing force are applied to the mounting shaft. At this time, under the guiding action between the guide blocks and the longitudinal guide rails, the guide blocks are driven to reciprocate up and down, and the adjustment component at the bottom end moves correspondingly at the same time, driving the self-adjustment component and the bottom plate at the bottom end to move synchronously, and finally driving the peeling component at the bottom end to reciprocate up and down until the ground is impacted to complete the chiseling and peeling process.

[0011] As a further technical solution of the present invention, first connecting rods are movably connected to the relatively far ends of the two guiding blocks through rotating shafts, second connecting rods are movably connected to the ends of the first connecting rods far from the guiding blocks through rotating shafts, and the other ends of the second connecting rods are connected to the output shafts of the double-shaft motors.

[0012] As a further technical solution of the present invention, the adjusting assembly includes an adjusting pipe. Liquid inlet ports are fixedly communicated with the left and right sides of the adjusting pipe near the top end. The other ends of the liquid inlet ports are communicated with one ends of three-way valves. An adjusting plate is movably sleeved inside the adjusting pipe.

[0013] As a further technical solution of the present invention, the bottom end of the adjusting plate is fixedly connected with an adjusting rod located inside the adjusting pipe. The bottom end of the adjusting rod penetrates through the bottom end of the adjusting pipe and is connected to the top end of the self-adjusting assembly. A limiting spring is movably sleeved on the outer side surface of the adjusting rod. The upper and lower ends of the limiting spring are respectively connected to the bottom end of the adjusting plate and the bottom end of the inner cavity of the adjusting pipe.

[0014] When the chiseling depth is insufficient to meet the requirements, that is, when the chiseling depth needs to be increased, at this time, due to the action of the oil pump inside the fuel tank, the hydraulic oil can be introduced into the three-way valve through the oil pipeline. At this time, the valve on one side of the three-way valve is opened, and the hydraulic oil then enters the inside of the adjusting pipe, and at the same time drives the adjusting plate to displace downward. At this time, the limiting spring is compressed accordingly, and at the same time drives the adjusting rod at the bottom end to displace downward. At this time, the self-adjusting assembly and the bottom plate at the bottom end move downward synchronously until the peeling assembly at the bottom end is driven to displace downward, completing the depth adjustment process of the peeling assembly.

[0015] By utilizing the active pumping of the hydraulic oil and the cooperative action of the power assembly and the adjusting assembly, the device can adjust the chiseling depth of the peeling assembly without stopping the machine. The whole process can be automatically completed, and the chiseling depth can be dynamically adjusted during the whole recycling process, effectively avoiding the problem that the traditional device needs to stop for adjustment and has low adjustment efficiency, and improving the overall recycling efficiency.

[0016] As a further technical solution of the present invention, the self-adjusting assembly includes an adjusting pipe. The top end of the adjusting pipe is connected to the bottom end of the adjusting rod. Liquid injection ports are fixedly communicated with the left and right sides of the adjusting pipe near the top end. The other ends of the liquid injection ports are communicated with oil discharge hoses. A piston plate is movably sleeved inside the adjusting pipe. A return spring is fixedly installed at the top end of the inner cavity of the adjusting pipe. The bottom end of the return spring is connected to the top end of the piston plate. The bottom end of the piston plate is fixedly connected with a piston rod. The bottom end of the piston rod penetrates through the bottom end of the bottom plate and is connected to a linkage frame. The left and right sides of the bottom end of the linkage frame are connected to the peeling assembly.

[0017] When performing asphalt stripping, the oil pump inside the fuel tank can be started, and hydraulic oil can be exported through the oil pipeline and enter the inside of the three-way valve. At this time, the valve at the bottom of the three-way valve is opened, and the hydraulic oil can be introduced into the adjustment pipe through the drain hose. At this time, the piston plate moves downward, and the return spring is stretched, and the piston rod and the linkage are driven to move downward synchronously. When the linkage moves downward, the negative pressure head at the bottom can be driven to move downward. When the linkage drops to the lowest point, the negative pressure head also drops to the lowest point. At this time, the negative pressure pump inside the negative pressure tank can be started to suck the crushed blocks generated by crushing into the negative pressure tank through the negative pressure head for storage; When the device is reset, the linkage automatically rises, which can drive the negative pressure head to rise automatically, so that it moves away from the ground to complete the storage process.

[0018] By reusing the actively pumped hydraulic oil, that is, using the cooperation between the self-adjusting component and the negative pressure head, when the device is transformed into the recovery and stripping state, the negative pressure head can be automatically lowered, and when the device is in the non-recovery state, the negative pressure head can be automatically stored. The whole process can be completed by itself, which can effectively avoid the accidental contact between the negative pressure head and the ground, reduce wear, and improve the service life.

[0019] As a further technical solution of the present invention, the stripping component includes mounting parts, the mounting parts are connected to the left and right ends of the bottom plate, the bottom ends of the mounting parts are movably connected with shovels through rotating shafts, the middle parts of the inner sides of the shovels are fixedly installed with first fixing seats, and one end of the first fixing seat away from the shovel is movably connected with an adjusting shaft through a rotating shaft.

[0020] As a further technical solution of the present invention, one end of the adjusting shaft away from the first fixing seat is movably connected with a second fixing seat through a rotating shaft, the top ends of the second fixing seats are fixedly connected with guide shafts, the top ends of the guide shafts penetrate through the top end of the bottom plate and are connected to the bottom end of the linkage, and the guide shafts move up and down relative to the bottom plate.

[0021] When the device is recycled, since the hydraulic oil is pumped into the adjustment pipe, at this time the linkage moves downward, driving the guide shaft to move downward, which can drive the second fixing seat to move downward. At this time, the first fixing seat deflects obliquely downward, and at the same time a thrust is applied to the shovel, and at this time the shovel deflects away from the middle direction until the angle adjustment is completed. When the appropriate angle is adjusted, the stripping work can be carried out; At the same time, when the device is reset, that is, when the linkage moves upward, at this time the guide shaft moves upward, and at the same time drives the adjusting shaft to deflect obliquely upward, which can pull the shovel to rotate obliquely upward, that is, adjust the shovel to a parallel state, and at this time the shovel is in a non-working state.

[0022] By utilizing the cooperative effect between the self-adjusting component and the peeling component, that is, when the device is in the recycling state, the automatic descent of the negative pressure head can act on the peeling component synchronously, automatically realizing the ejection of the scraper blade, and automatically realizing the storage of the scraper blade when not working, effectively avoiding the contact between the scraper blade and the asphalt when not working, reducing mispeeling, avoiding excessive wear, and increasing the service life.

[0023] A method for a surface aging asphalt delamination peeling device of recycled asphalt pavement materials includes the following steps: S1: When performing asphalt delamination peeling, the device can be placed above the ground to be constructed, and the oil pump inside the oil storage tank is turned on. Then, high-pressure oil can be introduced into the three-way valve through the oil delivery pipe, and the valve at the bottom of the three-way valve is opened to introduce the high-pressure oil into the self-adjusting component through the oil discharge hose. S2: The high-pressure oil then enters the adjustment pipe and drives the piston plate and piston rod to move downward. At this time, the return spring is stretched, and at the same time, the linkage frame is driven to move downward. At this time, the negative pressure head also moves downward to reach the lowest point position, completing the preparation before negative pressure suction. At this time, the negative pressure pump inside the negative pressure tank can be turned on to perform the negative pressure suction process. S3: At the same time, the downward movement of the linkage frame can drive the guide shaft to move downward. At this time, the adjustment shaft deflects outward, and then drives the scraper blade to move away from the middle, changing to the peeling state. S4: At the same time, turning on the double-shaft motor can drive the adjustment component to move up and down reciprocally under the action of the power component, and finally drive the peeling component to move up and down reciprocally to chisel the ground, and at the same time, suck the fragments through the negative pressure head. S5: When it is necessary to adjust the peeling depth, the valve on one side of the three-way valve can be opened to introduce the high-pressure oil into the adjustment pipe, and drive the adjustment plate and the adjustment rod to move downward as a whole. At this time, the bottom plate at the bottom of the adjustment component and the peeling component move downward synchronously to complete the on-line depth adjustment process.

[0024] The beneficial effects of the present invention are as follows: (1) By utilizing the active pumping of hydraulic oil and the cooperative effect of the power component and the adjustment component, the device can adjust the chiseling depth of the peeling component without stopping the machine. The whole process can be automatically completed, and the chiseling depth can be dynamically adjusted during the whole recycling process, effectively avoiding the problem that the traditional device needs to stop for adjustment and has low adjustment efficiency, and improving the overall recycling efficiency.

[0025] (2) By utilizing the cooperative effect between the self-adjusting component and the peeling component, that is, when the device is in the recycling state, the automatic descent of the negative pressure head can act on the peeling component synchronously, automatically realizing the ejection of the scraper blade, and automatically realizing the storage of the scraper blade when not working, effectively avoiding the contact between the scraper blade and the asphalt when not working, reducing mispeeling, avoiding excessive wear, and increasing the service life.

[0026] (3)When the hydraulic oil actively pumped in by the present invention is reused, that is, by the cooperation between the self-adjusting component and the negative pressure head, when the device is transformed into the recycling and peeling state, the negative pressure head can automatically move downward, and when the device is in the non-recycling state, the negative pressure head can be automatically stored. The whole process can be completed by itself, which can effectively avoid the accidental contact between the negative pressure head and the ground, reduce wear and improve the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a sectional schematic diagram of the internal structure of the fuel tank of the present invention; Figure 3 is an exploded schematic diagram of the power component and the longitudinal guide rail structure of the present invention; Figure 4 is a separate sectional schematic diagram of the adjusting component structure of the present invention; Figure 5 is a schematic diagram of the bottom structure of the bottom plate of the present invention; Figure 6 is a matching schematic diagram of the negative pressure box and the negative pressure head structures of the present invention; Figure 7 is a matching schematic diagram of the self-adjusting component and the bottom plate structures of the present invention; Figure 8 is a sectional schematic diagram of the internal structure of the self-adjusting component of the present invention; Figure 9 is a separate schematic diagram of the self-adjusting component structure of the present invention; In the figure: 1, frame; 2, mounting seat; 3, double-shaft motor; 4, fuel tank; 5, oil delivery pipe; 6, power component; 601, mounting shaft; 602, guide block; 603, first connecting rod; 604, second connecting rod; 605, mounting plate; 7, longitudinal guide rail; 8, mounting frame; 9, three-way valve; 10, oil discharge hose; 11, adjusting component; 111, adjusting pipe; 112, adjusting rod; 113, adjusting plate; 114, limiting spring; 115, liquid inlet; 12, negative pressure box; 13, negative pressure head; 14, negative pressure pipe; 15, self-adjusting component; 151, adjusting pipe; 152, piston plate; 153, piston rod; 154, return spring; 155, linkage frame; 156, liquid infusion port; 16, bottom plate; 17, peeling component; 171, mounting part; 172, shovel; 173, first fixing seat; 174, second fixing seat; 175, adjusting shaft; 176, guide shaft. DETAILED DESCRIPTION OF THE INVENTION

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] As Figures 1 to 9 shown, in the embodiment of the present invention, a device for layer-by-layer peeling of aged asphalt on the surface of recycled asphalt pavement materials includes a frame 1. A mounting seat 2 is fixedly installed at the top of the frame 1. A dual-axis motor 3 is fixedly installed at the top of the mounting seat 2. Power components 6 are installed at both the front and rear ends of the dual-axis motor 3. Oil storage tanks 4 are installed at both the left and right ends of the mounting seat 2. An oil pump is built into the interior of the oil storage tank 4. The interior of the oil storage tank 4 is filled with hydraulic oil. Oil delivery pipes 5 are fixedly connected to the bottom ends of the oil storage tanks 4. Longitudinal guide rails 7 are installed on both the front and rear sides of the mounting seat 2. An installation frame 8 is fixedly connected between the two longitudinal guide rails 7. An adjustment component 11 is fixedly sleeved in the middle of the installation frame 8. Three-way valves 9 are fixedly connected to both the left and right sides near the top of the adjustment component 11. Fixed connections are made between the relatively remote sides of the two three-way valves 9 and the oil delivery pipes 5. Drainage hoses 10 are fixedly connected to the bottom ends of the three-way valves 9. A self-adjustment component 15 is fixedly connected to the bottom end of the adjustment component 11. A bottom plate 16 is connected to the bottom end of the self-adjustment component 15. The self-adjustment component 15 is connected to the drainage hoses 10 at both the left and right sides near the top. Peeling components 17 are installed on both the left and right sides of the bottom plate 16. Connections are made between the self-adjustment component 15 at the bottom end and the peeling components 17 at both the left and right sides. A negative pressure head 13 located below the bottom plate 16 is fixedly installed at the bottom end of the self-adjustment component 15. Negative pressure boxes 12 are installed on both the front and rear sides of the bottom plate 16. A negative pressure pipe 14 is fixedly connected between the negative pressure boxes 12 and the negative pressure head 13. A negative pressure pump is installed inside the negative pressure boxes 12.

[0030] When separating and peeling the road surface asphalt, the device can be moved directly above the asphalt ground to be recycled, and the device is first connected to an external power source. In the initial state, the peeling component 17 is in an unrecovered state, and at the same time, the negative pressure head 13 is also at the highest point, that is, in a retracted state, to complete the preparations before recycling.

[0031] As Figure 1 and Figure 3As shown in the figure, the power assembly 6 includes a mounting shaft 601. Guide blocks 602 are fixedly installed at both the front and rear ends of the mounting shaft 601. The guide blocks 602 are movably clamped with the longitudinal guide rail 7. The guide blocks 602 displace up and down relative to the longitudinal guide rail 7. A mounting plate 605 is fixedly installed between the bottoms of the two guide blocks 602. The middle of the bottom end of the mounting plate 605 is connected to the top end of the adjustment assembly 11. One end of each of the two guide blocks 602 that is relatively far away from each other is movably connected to a first connecting rod 603 through a rotating shaft. The end of the first connecting rod 603 far away from the guide block 602 is movably connected to a second connecting rod 604 through a rotating shaft. The other end of the second connecting rod 604 is connected to the output shaft of the dual-axis motor 3.

[0032] When the device is in the recovery state, the dual-axis motor 3 can be started. At this time, the front and rear two second connecting rods 604 can be driven to rotate, and at the same time, the first connecting rod 603 is driven to rotate, and an upward pulling force and a downward pushing force are applied to the mounting shaft 601. At this time, under the guiding action between the guide block 602 and the longitudinal guide rail 7, the guide block 602 is driven to displace up and down reciprocally. At this time, the adjustment assembly 11 at the bottom end moves correspondingly, and at the same time, the self-adjusting assembly 15 and the bottom plate 16 at the bottom end move synchronously, and finally the peeling assembly 17 at the bottom end is driven to move up and down reciprocally until it impacts the ground to complete the chiseling and peeling process.

[0033] As Figure 1 and Figure 4 As shown in the figure, the adjustment assembly 11 includes an adjustment tube 111. Liquid inlets 115 are fixedly communicated with both the left and right sides of the adjustment tube 111 near the top end. The other end of the liquid inlet 115 is communicated with one end of the three-way valve 9. An adjustment plate 113 is movably sleeved inside the adjustment tube 111. The bottom end of the adjustment plate 113 is fixedly connected to an adjustment rod 112 located inside the adjustment tube 111. The bottom end of the adjustment rod 112 penetrates the bottom end of the adjustment tube 111 and is connected to the top end of the self-adjusting assembly 15. A limiting spring 114 is movably sleeved on the outer side of the adjustment rod 112. The upper and lower ends of the limiting spring 114 are respectively connected to the bottom end of the adjustment plate 113 and the bottom end of the inner cavity of the adjustment tube 111.

[0034] Embodiment: When the chiseling depth is not enough to meet the requirements, that is, when the chiseling depth needs to be increased, at this time, due to the action of the oil pump inside the oil storage tank 4, the hydraulic oil can be introduced into the three-way valve 9 through the oil delivery pipe 5. At this time, the valve on one side of the three-way valve 9 is opened, and at this time, the hydraulic oil enters the inside of the adjustment tube 111, and at the same time, the adjustment plate 113 is driven to displace downward. At this time, the limiting spring 114 is compressed accordingly, and at the same time, the adjustment rod 112 at the bottom end is driven to displace downward. At this time, the self-adjusting assembly 15 and the bottom plate 16 at the bottom end move downward synchronously until the peeling assembly 17 at the bottom end is driven to displace downward to complete the depth adjustment process of the peeling assembly 17.

[0035] By utilizing the active pumping of hydraulic oil and the cooperative action of the power assembly 6 and the adjustment assembly 11, the device can adjust the chiseling depth of the stripping assembly 17 without shutting down the machine. The whole process can be completed automatically, and the chiseling depth can be dynamically adjusted during the entire recovery process, effectively avoiding the problems of the traditional device needing to shut down for adjustment and having low adjustment efficiency, and improving the overall recovery efficiency.

[0036] As Figure 1 and Figure 7 and Figure 8 shown, the self-adjusting assembly 15 includes an adjustment pipe 151. The top end of the adjustment pipe 151 is connected to the bottom end of the adjustment rod 112. Both the left and right sides of the adjustment pipe 151 near the top end are fixedly communicated with infusion ports 156. The other end of the infusion port 156 is communicated with the oil discharge hose 10. A piston plate 152 is movably sleeved inside the adjustment pipe 151. A return spring 154 is fixedly installed at the top end of the inner cavity of the adjustment pipe 151. The bottom end of the return spring 154 is connected to the top end of the piston plate 152. The bottom end of the piston plate 152 is fixedly connected with a piston rod 153. The bottom end of the piston rod 153 penetrates through the bottom end of the bottom plate 16 and is connected to the linkage bracket 155. The left and right sides of the bottom end of the linkage bracket 155 are connected to the stripping assembly 17.

[0037] When performing asphalt stripping, the oil pump inside the storage tank 4 can be started, and the hydraulic oil can be exported through the oil delivery pipe 5 and enter the inside of the three-way valve 9. At this time, by opening the valve at the bottom end of the three-way valve 9, the hydraulic oil can be introduced into the inside of the adjustment pipe 151 through the oil discharge hose 10. At this time, the piston plate 152 moves downward, and the return spring 154 is stretched, and the piston rod 153 and the linkage bracket 155 are driven to move downward synchronously. When the linkage bracket 155 moves downward, the negative pressure head 13 at the bottom end can be driven to move downward until the linkage bracket 155 drops to the lowest point. At this time, the negative pressure head 13 also drops to the lowest point. By turning on the negative pressure pump inside the negative pressure tank 12, the crushed blocks generated by crushing can be sucked into the inside of the negative pressure tank 12 through the negative pressure head 13 for storage; When the device resets, the linkage bracket 155 automatically rises, which can drive the negative pressure head 13 to automatically rise and move away from the ground to complete the storage process.

[0038] By reusing the actively pumped hydraulic oil, that is, utilizing the cooperative action between the self-adjusting assembly 15 and the negative pressure head 13, when the device changes to the recovery and stripping state, the negative pressure head 13 can be automatically lowered, and when the device is in the non-recovery state, the negative pressure head 13 can be automatically stored. The whole process can be completed by itself, effectively avoiding the accidental contact between the negative pressure head 13 and the ground, reducing wear, and increasing the service life.

[0039] As Figure 1 and Figure 7 and Figure 8 andFigure 9 As shown in the figure, the stripping component 17 includes a mounting member 171. The mounting member 171 is connected to the left and right ends of the bottom plate 16. The bottom ends of the mounting members 171 are each movably connected to a scraper 172 through a rotating shaft. A first fixing seat 173 is fixedly installed in the middle of the inner side of the scraper 172. One end of the first fixing seat 173 away from the scraper 172 is movably connected to an adjusting shaft 175 through a rotating shaft. One end of the adjusting shaft 175 away from the first fixing seat 173 is movably connected to a second fixing seat 174 through a rotating shaft. The top ends of the second fixing seats 174 are each fixedly connected to a guiding shaft 176. The top end of the guiding shaft 176 penetrates through the top end of the bottom plate 16 and is connected to the bottom end of the linkage frame 155. The guiding shaft 176 moves up and down relative to the bottom plate 16.

[0040] Embodiment: When the device is recycling, since the hydraulic oil is pumped into the inside of the adjusting pipe 151, at this time the linkage frame 155 moves downward accordingly, and drives the guiding shaft 176 to move downward, which can drive the second fixing seat 174 to move downward. At this time, the first fixing seat 173 deflects obliquely downward accordingly, and at the same time exerts a thrust on the scraper 172. At this time, the scraper 172 deflects away from the middle direction until the angle adjustment is completed. When the appropriate angle is adjusted, the stripping work can be carried out; At the same time, when the device is reset, that is, when the linkage frame 155 moves upward, at this time the guiding shaft 176 moves upward, and at the same time drives the adjusting shaft 175 to deflect obliquely upward, which can pull the scraper 172 to rotate obliquely upward, that is, adjust the scraper 172 to a parallel state. At this time, the scraper 172 can be in a non-working state.

[0041] By utilizing the cooperation between the self-adjusting component 15 and the stripping component 17, that is, when the device is in the recycling state, the automatic descent of the negative pressure head 13 can act on the stripping component 17 synchronously, automatically realizing the ejection of the scraper 172, and automatically realizing the storage of the scraper 172 when not working, effectively avoiding the contact between the scraper 172 and the asphalt when not working, reducing mis-stripping, avoiding excessive wear, and improving the service life.

[0042] A method for a device for layer-by-layer stripping of aged asphalt on the surface of recycled asphalt pavement materials includes the following steps: S1: When carrying out the layer-by-layer stripping of asphalt, the device can be placed above the ground to be constructed, and the oil pump inside the fuel tank 4 is started, so that the high-pressure oil can be introduced into the inside of the three-way valve 9 through the oil pipeline 5, and the valve at the bottom end of the three-way valve 9 is opened to introduce the high-pressure oil into the inside of the self-adjusting component 15 through the oil discharge hose 10; S2: The high-pressure hydraulic fluid then enters the interior of the adjustment pipe 151, driving the piston plate 152 and the piston rod 153 to move downward. At this time, the return spring 154 is stretched accordingly, and at the same time, the linkage frame 155 is driven to move downward. At this time, the negative pressure head 13 also moves downward to reach the lowest point position, completing the preparation before negative pressure suction. At this time, the negative pressure pump inside the negative pressure box 12 can be turned on to carry out the negative pressure suction process; S3: At the same time, the downward movement of the linkage frame 155 can drive the guide shaft 176 to move downward. At this time, the adjustment shaft 175 deflects outward, thereby driving the scraper 172 to move away from the middle, changing to the peeling state; S4: At the same time, turning on the double-shaft motor 3 can drive the adjustment assembly 11 to move up and down reciprocally under the action of the power assembly 6, and finally drive the peeling assembly 17 to move up and down reciprocally to chisel the ground, and at the same time, suck the broken blocks through the negative pressure head 13; S5: When it is necessary to adjust the peeling depth, the valve on one side of the three-way valve 9 can be opened to introduce the high-pressure hydraulic fluid into the interior of the adjustment pipe 111, and drive the adjustment plate 113 and the adjustment rod 112 to move downward as a whole. At this time, the bottom plate 16 at the bottom of the adjustment assembly 11 and the peeling assembly 17 move downward synchronously to complete the on-line depth adjustment process.

[0043] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for stripping aged asphalt from the surface of a regenerated asphalt pavement material, comprising a frame (1), characterized in that: A mounting seat (2) is fixedly mounted on the top of the frame (1), a dual-axis motor (3) is fixedly mounted on the top of the mounting seat (2), power components (6) are mounted on both the front and rear ends of the dual-axis motor (3), oil storage tanks (4) are mounted on both the left and right ends of the mounting seat (2), an oil pump is built into the oil storage tank (4), the oil storage tank (4) is filled with hydraulic oil, and the bottom of the oil storage tank (4) is fixedly connected to an oil delivery pipe (5), longitudinal guide rails (7) are mounted on both the front and rear sides of the mounting seat (2), a mounting frame (8) is fixedly connected between the two longitudinal guide rails (7), an adjustment component (11) is fixedly sleeved in the middle of the mounting frame (8), and the left and right sides of the adjustment component (11) near the top are fixedly connected to three-way valves (9), and the two three-way valves (9) are relatively far from each other on one side. The oil delivery pipes (5) are fixedly connected, the bottom ends of the three-way valves (9) are fixedly connected to an oil discharge hose (10), the bottom ends of the regulating components (11) are fixedly connected to a self-adjusting component (15), the bottom ends of the self-adjusting components (15) are connected to a bottom plate (16), the left and right sides of the self-adjusting component (15) near the top are connected to the oil discharge hose (10), the left and right sides of the bottom plate (16) are installed with stripping components (17), the left and right sides of the bottom end of the self-adjusting component (15) are connected to the stripping component (17), the bottom ends of the self-adjusting components (15) are fixedly installed with a negative pressure head (13) located below the bottom plate (16), the front and rear sides of the bottom plate (16) are installed with a negative pressure box (12), and a negative pressure pipe (14) is fixedly connected between the negative pressure box (12) and the negative pressure head (13).

2. The device for stripping aged asphalt from the surface of regenerated asphalt pavement material according to claim 1, characterized in that: The power assembly (6) comprises a mounting shaft (601), and guide blocks (602) are fixedly mounted on both the front and rear ends of the mounting shaft (601). The guide blocks (602) are movably engaged with the longitudinal guide rail (7), and the guide blocks (602) are movable up and down relative to the longitudinal guide rail (7).

3. The device for stripping aged asphalt from the surface of regenerated asphalt pavement material according to claim 2, characterized in that: A mounting plate (605) is fixedly mounted between the bottom ends of the two guide blocks (602), and the middle portion of the bottom end of the mounting plate (605) is connected to the top end of the adjustment assembly (11).

4. The device for stripping aged asphalt from the surface of a regenerated asphalt pavement material according to claim 3, characterized in that: The ends of the two guide blocks (602) that are relatively far away from each other are movably connected to the first connecting rod (603) via a rotating shaft, and the ends of the first connecting rod (603) that are far away from the guide blocks (602) are movably connected to the second connecting rod (604) via a rotating shaft, and the other end of the second connecting rod (604) is connected to the output shaft of the dual-axis motor (3).

5. The device for stripping aged asphalt layers from the surface of regenerated asphalt pavement material according to claim 4, characterized in that: The regulating assembly (11) comprises a regulating tube (111), wherein the left and right sides of the regulating tube (111) near the top are fixedly connected with liquid inlets (115), the other end of the liquid inlet (115) is connected with one end of a three-way valve (9), and the regulating tube (111) is movably sleeved with a regulating plate (113) inside.

6. The device for stripping aged asphalt layers from the surface of regenerated asphalt pavement material according to claim 5, characterized in that: The bottom end of the adjustment plate (113) is fixedly connected to an adjustment rod (112) located inside the adjustment tube (111); the bottom end of the adjustment rod (112) passes through the bottom end of the adjustment tube (111) and is connected to the top end of the self-adjusting component (15); the outer side surface of the adjustment rod (112) is movably sleeved with a limit spring (114); the upper and lower ends of the limit spring (114) are respectively connected to the bottom end of the adjustment plate (113) and the bottom end of the inner cavity of the adjustment tube (111).

7. The device for stripping aged asphalt layers from the surface of regenerated asphalt pavement material according to claim 6, characterized in that: The self-adjusting component (15) comprises an adjusting tube (151), the top end of the adjusting tube (151) is connected to the bottom end of the adjusting rod (112), the left and right sides of the adjusting tube (151) near the top are fixedly connected with an infusion port (156), the other end of the infusion port (156) is connected to the oil discharge hose (10), the inside of the adjusting tube (151) is movably sleeved with a piston plate (152), the top end of the inner cavity of the adjusting tube (151) is fixedly mounted with a return spring (154), the bottom end of the return spring (154) is connected to the top end of the piston plate (152), the bottom end of the piston plate (152) is fixedly connected with a piston rod (153), the bottom end of the piston rod (153) passes through the bottom end of the bottom plate (16) and is connected to a linkage frame (155), and the left and right sides of the bottom end of the linkage frame (155) are connected to the stripping component (17).

8. The device for stripping aged asphalt layers from the surface of regenerated asphalt pavement material according to claim 7, characterized in that: The stripping assembly (17) comprises a mounting member (171), the mounting member (171) being connected to the left and right ends of the bottom plate (16), the bottom end of the mounting member (171) being movably connected to a scraper (172) via a rotating shaft, a first fixing seat (173) being fixedly mounted in the middle of the inner side surface of the scraper (172), and an end of the first fixing seat (173) away from the scraper (172) being movably connected to an adjustment shaft (175) via a rotating shaft.

9. The device for stripping aged asphalt layers from the surface of regenerated asphalt pavement material according to claim 8, characterized in that: One end of the adjustment shaft (175) away from the first fixed seat (173) is movably connected to the second fixed seat (174) via a rotating shaft, and the top end of the second fixed seat (174) is fixedly connected to a guide shaft (176). The top end of the guide shaft (176) passes through the top end of the bottom plate (16) and is connected to the bottom end of the linkage frame (155). The guide shaft (176) moves up and down relative to the bottom plate (16).

10. The method for stripping aged asphalt layers from the surface of regenerated asphalt pavement material according to claim 9, characterized in that: The following steps are involved: S1: When performing asphalt layer stripping, the device can be placed above the ground to be constructed, and the oil pump inside the oil storage tank (4) can be turned on to introduce high-pressure oil into the interior of the three-way valve (9) through the oil pipeline (5), and the valve at the bottom end of the three-way valve (9) is opened to introduce the high-pressure oil into the interior of the self-adjusting component (15) through the oil discharge hose (10); S2: The high-pressure oil then enters the interior of the adjustment tube (151) and drives the piston plate (152) and the piston rod (153) to move downward. At this time, the return spring (154) is stretched and drives the linkage frame (155) to move downward. At this time, the negative pressure head (13) moves downward and reaches the lowest point, completing the preparation before negative pressure absorption. At this time, the negative pressure pump inside the negative pressure box (12) can be turned on to carry out the negative pressure absorption process; S3: At the same time, the linkage frame (155) moves downward to drive the guide shaft (176) to move downward, and the adjustment shaft (175) deflects toward the outer side, thereby driving the scraper (172) to move in a direction away from the middle, and transforming into a peeling state; S4: The dual-axis motors (3) are turned on simultaneously to drive the adjustment component (11) to move up and down under the action of the power component (6), and finally drive the stripping component (17) to move up and down to strike the ground, while the negative pressure head (13) sucks up the fragments; S5: When the stripping depth needs to be adjusted, the valve on one side of the three-way valve (9) can be opened to introduce high-pressure oil into the interior of the regulating tube (111), and the regulating plate (113) and the regulating rod (112) are driven to move downward as a whole. At this time, the bottom plate (16) at the bottom end of the regulating assembly (11) and the stripping assembly (17) are moved downward synchronously, completing the online depth adjustment process.

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