In-situ hot regeneration process and device for asphalt pavement

Abstract

The present invention belongs to the technical field of road maintenance, and specifically is an in-situ hot regeneration process and device for asphalt pavement, which is paved by the following steps: S1: thoroughly clean the old asphalt pavement to ensure that the pavement is free of debris, dust, etc., first heat the pavement with a heater, and after the pavement is softened by heating, use a milling machine to mill the pavement; S2: heat and collect the old asphalt mixture after milling, and then mix the old asphalt mixture with a regeneration agent and a new asphalt mixture according to a certain proportion through a mixing device; S3: spread the mixed regenerated mixture with a paving device, and use a roller to compact the regenerated pavement after paving.

Description

Technical Field

[0001] The invention belongs to the technical field of road maintenance, and in particular to an in-situ hot regeneration process and device for an asphalt pavement. Background Art

[0002] Due to long-term traffic loads, natural environmental factors (such as temperature changes, rain erosion) or material aging, asphalt roads may develop cracks, rutting, potholes and other defects. In-situ hot regeneration of asphalt pavement is an efficient preventive maintenance technology that can repair the defects of the asphalt pavement surface, restore its physical and mechanical properties, and improve the performance of the pavement.

[0003] It uses special on-site hot regeneration equipment to heat and mill the asphalt pavement, and add a certain amount of new asphalt, new asphalt mixture, regeneration agent, etc. on-site. After hot mixing, paving, rolling and other processes, it can realize the regeneration of old asphalt concrete pavement within a certain depth range on the surface at one time.

[0004] In the process of recycling old asphalt milling, the old asphalt mixture will be broken into particles of different sizes. Some larger particles will be re-mixed with new asphalt, increasing the porosity and permeability of the mixture, which will affect the final mixture. Therefore, in response to the above problems, an in-situ hot regeneration process and device for asphalt pavement are proposed. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art and solve at least one technical problem raised in the background technology, the present invention proposes an in-situ hot regeneration process and device for asphalt pavement.

[0006] The technical solution adopted by the present invention to solve the technical problem is: the in-situ hot regeneration process of asphalt pavement described in the present invention is paved by the following steps:

[0007] S1: Clean the old asphalt road surface thoroughly to ensure that there is no debris, dust, etc. on the road surface. First, heat the road surface with a heater. After the road surface is softened by heating, use a milling machine to mill the road surface.

[0008] S2: The old asphalt mixture after milling is heated and collected, and then the old asphalt mixture is mixed with the regeneration agent and the new asphalt mixture in a certain proportion through a mixing device;

[0009] S3: Spread the mixed recycled mixture using paving equipment, and compact the paved recycled road surface using a roller.

[0010] A device for hot in-situ regeneration of asphalt pavement, which is suitable for the above-mentioned hot in-situ regeneration process of asphalt pavement; the mixing equipment in S2 includes a mixing box; a plurality of buffer components are arranged inside the mixing box; a filter plate is installed above the buffer component; a bottom plate is arranged at the bottom of the outer wall of the mixing box; a hydraulic rod is fixedly connected to the side wall of the bottom plate; a first connecting plate is fixedly connected to the side wall of the hydraulic rod; the mixing box and the first connecting plate are installed on a mixing vehicle; a mixing assembly is arranged inside the mixing box; a turntable is connected to the outer wall of the mixing assembly; the first connecting rod is rotatably connected to the outer wall of the turntable; the side wall of the first connecting rod is rotatably connected to the second connecting rod; a limit plate is fixedly connected to the outer wall of the mixing box; the limit plate is in sliding contact with the second connecting rod; the side wall of the second connecting rod is fixedly connected to the first connecting column; a slide groove is opened on the side wall of the mixing box; the first connecting column is in sliding contact with the slide groove; a touch block is fixedly connected to the side wall of the first connecting column; the touch block is in contact with the filter plate.

[0011] Preferably, the stirring assembly includes a first support plate, a servo motor, a second connecting column, a turbine stirring blade, a synchronous wheel, and a synchronous belt; the outer side wall of the stirring box is fixedly connected to the first support plate; the top of the outer side wall of the first support plate is fixedly connected to the servo motor; a pair of second connecting columns are rotatably connected inside the stirring box; a turntable is fixedly connected to the outer side wall of the second connecting column; the side wall of another second connecting column is fixedly connected to the output end of the servo motor; a number of turbine stirring blades are fixedly connected to the outer side wall of the second connecting column; the outer side wall of the second connecting column is fixedly connected to the synchronous wheel; and the side wall of the synchronous wheel is provided with a synchronous belt.

[0012] Preferably, the buffer assembly includes a second support plate, a first sliding column, a protection box, and a first spring; a plurality of second support plates are fixedly connected to the inner wall of the mixing box; the inner wall of the second support plate is in sliding contact with the first sliding column; the top of the outer wall of the first sliding column is fixedly connected to the protection box; the top of the outer wall of the protection box is fixedly connected to the filter plate; the bottom of the outer wall of the protection box is fixedly connected to the first spring; the outer wall of the first spring is fixedly connected to the second support plate; the protection box is in sliding contact with the first support plate.

[0013] Preferably, the outer wall of the mixing box is fixedly connected to a fixed plate; a second sliding column is in sliding contact inside the fixed plate; a second connecting plate is fixedly connected to the bottom of the outer wall of the second sliding column; a connecting frame is fixedly connected to the bottom of the outer wall of the second connecting plate; a roller is rotatably connected to the side wall of the connecting frame; a second spring is fixedly connected to the top of the outer wall of the second connecting plate; the outer wall of the second spring is fixedly connected to the fixed plate; the roller is in contact with the synchronous belt; and the second connecting plate is in sliding contact with the mixing box.

[0014] Preferably, a limiting groove is provided inside the mixing box; the inner wall of the limiting groove is in sliding contact with a sealing plate; the inner wall of the sealing plate is fixedly connected to the first connecting column; the outer wall of the first connecting column is fixedly connected to a clamping plate; the clamping plate is in sliding contact with the mixing box.

[0015] Preferably, a connecting buckle is fixedly connected to the top of the outer side wall of the second sliding column.

[0016] Preferably, a plurality of collars are fixedly connected to the inner side wall of the mixing box; and a second connecting column is rotatably connected to the inner side wall of the collar.

[0017] Preferably, the first connecting column is made of steel.

[0018] Beneficial effects of the present invention:

[0019] The present invention provides an in-situ hot regeneration process and device for asphalt pavement. By setting a touch block and a filter plate, the material above the filter plate can be continuously vibrated and screened, thereby limiting the maximum particle size of the old asphalt pavement material, removing large particles in the old asphalt mixture, and making the recycled mixture more uniform and delicate.

[0020] The present invention provides an in-situ hot regeneration process and device for asphalt pavement. A synchronous belt is provided to enable multiple turbine stirring blades inside the equipment to rotate synchronously. When rotating, the turbine stirring blades can quickly shear and disperse the asphalt and its additives to achieve more uniform mixing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide further understanding of the present invention and constitute a part of this application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0022] In the attached picture:

[0023] Figure 1 It is a process flow chart of the present invention;

[0024] Figure 2 It is a three-dimensional diagram of the mixing box in the present invention;

[0025] Figure 3 is a three-dimensional diagram of a turbine-type stirring blade in the present invention;

[0026] Figure 4 is a three-dimensional diagram of the first connecting rod in the present invention;

[0027] Figure 5 It is a schematic diagram of the structure of the limiting groove in the present invention;

[0028] Figure 6 is a three-dimensional diagram of the protection box of the present invention;

[0029] Figure 7 It is a stereogram of the roller in the present invention.

[0030] Legend:

[0031] 1. Mixing box; 11. Bottom plate; 12. Hydraulic rod; 13. First connecting plate; 14. Turntable; 15. First connecting rod; 16. Second connecting rod; 17. Limiting plate; 18. First connecting column; 19. Touch block; 10. Filter plate; 101. Slide; 2. First support plate; 21. Servo motor; 22. Second connecting column; 23. Turbine stirring blade; 24. Synchronous wheel; 25. Synchronous belt; 3. Second support plate; 31. First slide column; 32. Protection box; 33. First spring; 4. Fixed plate; 41. Second slide column; 42. Second connecting plate; 43. Connecting frame; 44. Roller; 45. Second spring; 5. Limiting groove; 51. Sealing plate; 52. Clamp; 6. Connecting buckle; 7. Ring. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Specific examples are given below.

[0034] See also Figure 1 - Figure 7 The present invention provides an in-situ hot regeneration process for asphalt pavement, which is paved by the following steps:

[0035] S1: Clean the old asphalt road surface thoroughly to ensure that there is no debris, dust, etc. on the road surface. First, heat the road surface with a heater. After the road surface is softened by heating, use a milling machine to mill the road surface.

[0036] S2: The old asphalt mixture after milling is heated and collected, and then the old asphalt mixture is mixed with the regeneration agent and the new asphalt mixture in a certain proportion through a mixing device;

[0037] S3: Spread the mixed recycled mixture using paving equipment, and compact the paved recycled road surface using a roller.

[0038] An in-situ hot regeneration device for asphalt pavement, which is applicable to the in-situ hot regeneration process for asphalt pavement mentioned above; the mixing equipment in S2 includes a mixing box 1; a plurality of buffer components are arranged inside the mixing box 1; a filter plate 10 is installed above the buffer component; a bottom plate 11 is arranged at the bottom of the outer wall of the mixing box 1; a hydraulic rod 12 is fixedly connected to the side wall of the bottom plate 11; a first connecting plate 13 is fixedly connected to the side wall of the hydraulic rod 12; the mixing box 1 and the first connecting plate 13 are installed on a mixing vehicle; a mixing component is arranged inside the mixing box 1; the mixing component The outer wall of the component is connected to a turntable 14; the outer wall of the turntable 14 is rotatably connected to a first connecting rod 15; the side wall of the first connecting rod 15 is rotatably connected to a second connecting rod 16; the outer wall of the mixing box 1 is fixedly connected to a limit plate 17; the limit plate 17 is in sliding contact with the second connecting rod 16; the side wall of the second connecting rod 16 is fixedly connected to a first connecting column 18; the side wall of the mixing box 1 is provided with a slide groove 101; the first connecting column 18 is in sliding contact with the slide groove 101; the side wall of the first connecting column 18 is fixedly connected to a touch block 19; the touch block 19 is in contact with the filter plate 10. When the equipment is working, old asphalt mixture, new asphalt mixture and the like will fall from the top of the mixing box 1. These mixtures will first pass through the filter plate 10 and then fall into the mixing box 1. The mixing component will be started. When the mixing component is working, it will drive the turntable 14 to rotate. When the turntable 14 rotates, it will drive the first connecting rod 15 and the second connecting rod 16. The second connecting rod 16 can only move in parallel under the restriction of the limit plate 17. When the second connecting rod 16 moves, it will drive the first connecting column 18 and the touch block 19 to move. The touch block 19 will continuously collide with the filter plate 10 and then separate. The buffer component will support the filter plate 10. When the filter plate 10 shakes as a whole due to the collision, the material above the filter plate 10 will vibrate. Through the set touch block 19 and the filter plate 10, the material above the filter plate 10 can be continuously vibrated and screened, thereby limiting the maximum particle size of the old asphalt pavement material, removing large particles in the old asphalt mixture, and making the recycled mixture more uniform and delicate.

[0039] Further, such as Figure 2 , Figure 3 and Figure 4As shown, the stirring assembly includes a first support plate 2, a servo motor 21, a second connecting column 22, a turbine stirring blade 23, a synchronous wheel 24, and a synchronous belt 25; the outer wall of the stirring box 1 is fixedly connected to the first support plate 2; the top of the outer wall of the first support plate 2 is fixedly connected to the servo motor 21; a pair of second connecting columns 22 are rotatably connected inside the stirring box 1; the outer wall of the second connecting column 22 is fixedly connected to a turntable 14; the side wall of another second connecting column 22 is fixedly connected to the output end of the servo motor 21; a plurality of turbine stirring blades 23 are fixedly connected to the outer wall of the second connecting column 22; the outer wall of the second connecting column 22 is fixedly connected to the synchronous wheel 24; the side wall of the synchronous wheel 24 is provided with a synchronous belt 25. When the equipment is working, when the servo motor 21 is started, the servo motor 21 will drive the second connecting column 22 to rotate. When the second connecting column 22 rotates, multiple turbine stirring blades 23 will rotate at the same time, and the synchronous wheel 24 fixed to the second connecting column 22 will also rotate. The synchronous wheel 24 will rotate another synchronous wheel 24 through the synchronous belt 25. Finally, the two second connecting columns 22 rotate synchronously. When both second connecting columns 22 rotate, the turntable 14 will also be driven to run. Through the set synchronous belt 25, multiple turbine stirring blades 23 inside the equipment can rotate synchronously. When rotating, the turbine stirring blades 23 can quickly shear and disperse the asphalt and its additives to achieve more uniform mixing.

[0040] Further, such as Figure 3 and Figure 6 As shown, the buffer assembly includes a second support plate 3, a first sliding column 31, a protection box 32, and a first spring 33; a plurality of second support plates 3 are fixedly connected to the inner wall of the mixing box 1; the inner wall of the second support plate 3 is in sliding contact with the first sliding column 31; the top of the outer wall of the first sliding column 31 is fixedly connected to the protection box 32; the top of the outer wall of the protection box 32 is fixedly connected to the filter plate 10; the bottom of the outer wall of the protection box 32 is fixedly connected to the first spring 33; the outer wall of the first spring 33 is fixedly connected to the second support plate 3; the protection box 32 is in sliding contact with the first support plate 2. When the equipment is working, the filter plate 10 will be continuously collided by the touch block 19. When the filter plate 10 is collided, it will move upward. The filter plate 10 will pull the protection box 32 to move. The first slide column 31 limits the movement direction of the protection box 32. When the protection box 32 moves, the first spring 33 will be stretched. When the touch block 19 is separated from the filter plate 10, the first spring 33 will shrink and reset, and the first slide column 31 will also reset. By setting the first spring 33 and the first slide column 31, the filter plate 10 can be made more stable during the ups and downs, reducing the situation where the filter plate 10 is temporarily suspended in the air during the collision of the filter plate 10, thereby increasing the effect of vibration screening.

[0041] Further, such as Figure 3 and Figure 7As shown, the outer wall of the mixing box 1 is fixedly connected to a fixed plate 4; a second sliding column 41 is in sliding contact inside the fixed plate 4; a second connecting plate 42 is fixedly connected to the bottom of the outer wall of the second sliding column 41; a connecting frame 43 is fixedly connected to the bottom of the outer wall of the second connecting plate 42; a roller 44 is rotatably connected to the side wall of the connecting frame 43; a second spring 45 is fixedly connected to the top of the outer wall of the second connecting plate 42; the outer wall of the second spring 45 is fixedly connected to the fixed plate 4; the roller 44 is in contact with the synchronous belt 25; and the second connecting plate 42 is in sliding contact with the mixing box 1. When the equipment is working, the synchronous wheel 24 will be connected through the synchronous belt 25, and the second spring 45 will push the second connecting plate 42 to move toward the synchronous belt 25. The second connecting plate 42 will move parallel to the synchronous belt 25 under the restriction of the mixing box 1 and the second sliding column 41, and then squeeze the roller 44 on the surface of the synchronous belt 25. When the synchronous belt 25 is running, the roller 44 will rotate in coordination. By setting the roller 44 and the second connecting plate 42, the stability of the synchronous belt 25 during operation can be increased, and the probability of slipping between the synchronous belt 25 and the synchronous wheel 24 when the equipment is working can be reduced.

[0042] Further, such as Figure 5 As shown, a limiting groove 5 is provided inside the mixing box 1; the inner wall of the limiting groove 5 is in sliding contact with a sealing plate 51; the inner wall of the sealing plate 51 is fixedly connected to the first connecting column 18; the outer wall of the first connecting column 18 is fixedly connected with a clamping plate 52; the clamping plate 52 is in sliding contact with the mixing box 1. When the equipment is working, when the equipment is working. The first connecting column 18 will move, and at this time the sealing plate 51 and the clamping plate 52 will also slide up and down along the first supporting plate 2. The sealing plate 51 can seal the hole formed by the slide groove 101. By setting the sealing plate 51 and the clamping plate 52, the stability of the first connecting column 18 during movement can be increased, while the probability of material leakage from the slide groove 101 can be reduced, thereby increasing the protection of the material inside the equipment.

[0043] Further, such as Figure 7 As shown, a connecting buckle 6 is fixedly connected to the top of the outer side wall of the second slide column 41. When the equipment is working and needs maintenance, an object such as a steel pipe is inserted into the connecting buckle 6 and lifted from both ends to make the roller 44 detach from the synchronous belt 25. At this time, the synchronous belt 25 can be disassembled or replaced. The connecting buckle 6 is provided to facilitate the maintenance of the equipment by the staff.

[0044] Further, such as Figure 3 As shown, the inner wall of the mixing box 1 is fixed with a plurality of collars 7; the inner wall of the collar 7 is rotatably connected with a second connecting column 22. When the device is working, the turbine stirring blade 23 will rotate, and the collar 7 can restrict the turbine stirring blade 23 to a certain extent. By setting the collar 7, the stability of the turbine stirring blade 23 during operation is increased.

[0045] Furthermore, as shown in FIG. x, the first connecting column 18 is made of steel. When the device is working, the first connecting column 18 plays an important connecting role. By setting the first connecting column 18 to be made of steel, the first connecting column 18 is less likely to break when the device is used for a long time, and the stability of the device when working is further increased.

[0046] Working principle: when the equipment is working, old asphalt mixture, new asphalt mixture, etc. will fall from the top of the mixing box 1. These mixtures will first pass through the filter plate 10 and then fall into the mixing box 1. The mixing component will be started. When the mixing component is working, it will drive the turntable 14 to rotate. When the turntable 14 rotates, it will drive the first connecting rod 15 and the second connecting rod 16. The second connecting rod 16 can only move in parallel under the restriction of the limit plate 17. When the second connecting rod 16 moves, it will drive the first connecting column 18 and the touch block 19 to move. The touch block 19 will continuously collide with the filter plate 10 and then separate. The buffer component will support the filter plate 10. When the filter plate 10 shakes as a whole due to the collision, the material above the filter plate 10 will vibrate. Through the set touch The bump block 19 and the filter plate 10 allow the material above the filter plate 10 to be continuously vibrated and screened, limiting the maximum particle size of the old asphalt pavement material, removing large particles in the old asphalt mixture, and making the recycled mixture more uniform and delicate. When the equipment is working, when the servo motor 21 is started, the servo motor 21 will drive the second connecting column 22 to rotate. When the second connecting column 22 rotates, multiple turbine stirring blades 23 will rotate at the same time, and the synchronous wheel 24 fixed to the second connecting column 22 will also rotate. The synchronous wheel 24 will rotate another synchronous wheel 24 through the synchronous belt 25. Finally, the two second connecting columns 22 rotate synchronously. When both second connecting columns 22 rotate, the turntable 14 will also be driven to run. By setting the synchronous The belt 25 makes multiple turbine stirring blades 23 inside the equipment rotate synchronously. The turbine stirring blades 23 can quickly shear and disperse the asphalt and its additives when rotating to achieve more uniform mixing. When the equipment is working, the filter plate 10 will be continuously collided by the touch block 19. When the filter plate 10 is collided, it will move upward. The filter plate 10 will pull the protection box 32 to move. The first slide column 31 limits the moving direction of the protection box 32. When the protection box 32 moves, the first spring 33 will be stretched. When the touch block 19 is separated from the filter plate 10, the first spring 33 will shrink and reset, and the first slide column 31 will also reset. By setting the first spring 33 and the first slide column 31, the filter plate 10 can be made more stable during the ups and downs. To reduce the possibility of temporary stagnation of the filter plate 10 during the collision, and to increase the effect of vibration screening, when the equipment is working, the synchronous wheel 24 will be connected through the synchronous belt 25, and the second spring 45 will push the second connecting plate 42 to move toward the synchronous belt 25. The second connecting plate 42 will move parallel to the synchronous belt 25 under the restriction of the mixing box 1 and the second sliding column 41, and then squeeze the roller 44 on the surface of the synchronous belt 25. When the synchronous belt 25 is running, the roller 44 will rotate in coordination. By setting the roller 44 and the second connecting plate 42, the stability of the synchronous belt 25 at work can be increased, and the probability of slipping between the synchronous belt 25 and the synchronous wheel 24 when the equipment is working can be reduced. When the equipment is working, when the equipment is working.The first connecting column 18 will move, and the sealing plate 51 and the clamping plate 52 will also slide up and down along the first supporting plate 2. The sealing plate 51 can seal the hole formed by the slide groove 101. The sealing plate 51 and the clamping plate 52 can increase the stability of the first connecting column 18 when it moves, and reduce the probability of material leakage from the slide groove 101, thereby increasing the protection of the material inside the equipment. When the equipment is working and needs maintenance, inserting items such as steel pipes into the connecting buckle 6 and lifting them from both ends can disengage the roller 44 from the synchronous belt 25, and the synchronous belt 25 can be maintained. The step belt 25 can be disassembled or replaced, and the connecting buckle 6 is provided to facilitate the maintenance of the equipment by the staff. When the equipment is working, the turbine stirring blade 23 will rotate, and the ring 7 can limit the turbine stirring blade 23 to a certain extent. The setting of the ring 7 increases the stability of the turbine stirring blade 23 when it is working. When the equipment is working, the first connecting column 18 plays an important connecting role. The material of the first connecting column 18 is steel, which reduces the possibility of breakage of the first connecting column 18 when the equipment is used for a long time, and further increases the stability of the equipment when it is working.

[0047] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A process for hot-in-situ regeneration of asphalt pavement, comprising the following steps: S1: Clean the old asphalt road surface thoroughly to ensure that there is no debris, dust, etc. on the road surface. First, heat the road surface with a heater. After the road surface is softened by heating, use a milling machine to mill the road surface. S2: The old asphalt mixture after milling is heated and collected, and then the old asphalt mixture is mixed with the regeneration agent and the new asphalt mixture in a certain proportion through a mixing device; S3: Spread the mixed recycled mixture using paving equipment, and compact the paved recycled road surface using a roller.

2. An in-situ hot regeneration device for asphalt pavement according to claim 1, which is suitable for an in-situ hot regeneration process for asphalt pavement mentioned in claim 1; characterized in that: The mixing device in S2 comprises a mixing box (1); a plurality of buffer components are arranged inside the mixing box (1); a filter plate (10) is installed above the buffer component; a bottom plate (11) is arranged at the bottom of the outer wall of the mixing box (1); a hydraulic rod (12) is fixedly connected to the side wall of the bottom plate (11); a first connecting plate (13) is fixedly connected to the side wall of the hydraulic rod (12); the mixing box (1) and the first connecting plate (13) are installed on a mixing vehicle; a mixing component is arranged inside the mixing box (1); a turntable (14) is connected to the outer wall of the mixing component; the outer wall of the turntable (14) is The mixing box (1) is rotatably connected to a first connecting rod (15); the side wall of the first connecting rod (15) is rotatably connected to a second connecting rod (16); the outer wall of the mixing box (1) is fixedly connected to a limiting plate (17); the limiting plate (17) is in sliding contact with the second connecting rod (16); the side wall of the second connecting rod (16) is fixedly connected to a first connecting column (18); the side wall of the mixing box (1) is provided with a sliding groove (101); the first connecting column (18) is in sliding contact with the sliding groove (101); the side wall of the first connecting column (18) is fixedly connected to a touch block (19); the touch block (19) is in contact with the filter plate (10).

3. The in-situ hot regeneration device for asphalt pavement according to claim 2, characterized in that: The stirring assembly comprises a first support plate (2), a servo motor (21), a second connecting column (22), a turbine stirring blade (23), a synchronous wheel (24), and a synchronous belt (25); the outer wall of the stirring box (1) is fixedly connected to the first support plate (2); the top of the outer wall of the first support plate (2) is fixedly connected to the servo motor (21); a pair of second connecting columns (22) are rotatably connected inside the stirring box (1); the outer wall of the second connecting column (22) is fixedly connected to a turntable (14); the side wall of another second connecting column (22) is fixedly connected to the output end of the servo motor (21); a plurality of turbine stirring blades (23) are fixedly connected to the outer wall of the second connecting column (22); the outer wall of the second connecting column (22) is fixedly connected to the synchronous wheel (24); and the side wall of the synchronous wheel (24) is provided with a synchronous belt (25).

4. The in-situ hot regeneration device for asphalt pavement according to claim 2, characterized in that: The buffer assembly comprises a second support plate (3), a first sliding column (31), a protection box (32), and a first spring (33); a plurality of second support plates (3) are fixedly connected to the inner wall of the mixing box (1); the inner wall of the second support plate (3) is in sliding contact with the first sliding column (31); the top of the outer wall of the first sliding column (31) is fixedly connected to the protection box (32); the top of the outer wall of the protection box (32) is fixedly connected to the filter plate (10); the bottom of the outer wall of the protection box (32) is fixedly connected to the first spring (33); the outer wall of the first spring (33) is fixedly connected to the second support plate (3); the protection box (32) is in sliding contact with the first support plate (2).

5. The in-situ hot regeneration device for asphalt pavement according to claim 2, characterized in that: The outer wall of the mixing box (1) is fixedly connected to a fixed plate (4); a second sliding column (41) is in sliding contact inside the fixed plate (4); a second connecting plate (42) is fixedly connected to the bottom of the outer wall of the second sliding column (41); a connecting frame (43) is fixedly connected to the bottom of the outer wall of the second connecting plate (42); a roller (44) is rotatably connected to the side wall of the connecting frame (43); a second spring (45) is fixedly connected to the top of the outer wall of the second connecting plate (42); the outer wall of the second spring (45) is fixedly connected to the fixed plate (4); the roller (44) is in contact with the synchronous belt (25); and the second connecting plate (42) is in sliding contact with the mixing box (1).

6. The in-situ hot regeneration device for asphalt pavement according to claim 2, characterized in that: A limiting groove (5) is provided inside the mixing box (1); the inner wall of the limiting groove (5) is in sliding contact with a sealing plate (51); the inner wall of the sealing plate (51) is fixedly connected to a first connecting column (18); the outer wall of the first connecting column (18) is fixedly connected to a clamping plate (52); the clamping plate (52) is in sliding contact with the mixing box (1).

7. The in-situ hot regeneration device for asphalt pavement according to claim 5, characterized in that: A connecting buckle (6) is fixedly connected to the top of the outer side wall of the second sliding column (41).

8. The in-situ hot regeneration device for asphalt pavement according to claim 2, characterized in that: A plurality of collars (7) are fixedly connected to the inner wall of the mixing box (1); and a second connecting column (22) is rotatably connected to the inner wall of the collar (7).

9. The in-situ hot regeneration device for asphalt pavement according to claim 2, characterized in that: The first connecting column (18) is made of steel.

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