A kind of regenerated water stabilizing layer construction device and method

Abstract

This invention discloses a construction device and method for a recycled water-stabilized layer, relating to the technical field of road maintenance equipment. The recycled water-stabilized layer construction device includes a machine body, on which a first milling drum, a second milling drum, a screw conveyor, and a paving device are sequentially arranged from front to back along the forward direction. It further includes: the first milling drum for breaking up the asphalt layer, and the second milling drum for breaking up the water-stabilized layer, with both the first and second milling drums breaking up in the forward direction of the machine body; the first milling drum consists of a cutter head, an outer cylinder, a rotation mechanism, and an adjustment mechanism, with the cutter head inclined and slidably mounted on the outer cylinder. By configuring the cutter head and rotation mechanism, this invention ensures that the cutter head remains stationary when breaking up the asphalt layer, while sliding into the outer cylinder when contacting the water-stabilized layer, thereby preventing the first milling drum from damaging the existing water-stabilized layer when breaking up the asphalt layer.

Description

Technical Field

[0001] The present invention relates to the technical field of road maintenance equipment, and in particular to a regenerated water-stabilizing layer construction device and method. Background Art

[0002] Asphalt roads are usually composed of an asphalt layer and a water-stabilizing layer. During long-term use, the asphalt layer and the water-stabilizing layer will be damaged to varying degrees, which will affect the quality of the road surface. At present, there are a large number of old roads in my country that need to be repaired every year. In order to save raw materials and reduce repair costs, recycling treatment is usually carried out.

[0003] When the water-stable layer needs to be repaired, the asphalt layer must be peeled off first, and then the existing water-stable layer must be broken. The repair of the water-stable layer usually adopts on-site cold regeneration treatment, that is, the asphalt layer is first peeled off by the first milling machine, and then the water-stable layer is broken and mixed by the regeneration machine, and then it is spread and leveled by the paver.

[0004] The above process has the following problems. First, since the junction between the asphalt layer and the water-stable layer is not flat, the existing milling drum will also damage the water-stable layer when breaking the asphalt layer, and will take away some of the raw materials of the water-stable layer, which also reduces the utilization rate of the existing water-stable layer and increases the amount of raw materials used in the water-stable layer during the regeneration process. Secondly, during on-site cold regeneration, the milling drum will directly mix the water-stable layer after breaking it, so that the particle size of the raw materials after breaking cannot be effectively controlled, and the broken debris (generally particles smaller than 3mm) will be put back into use, which increases the difficulty of controlling the content of fine particles in the regenerated water-stable layer. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a regenerated water-stabilizing layer construction device and method, which solves the problems raised in the background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a regenerated water-stabilizing layer construction device, including a fuselage, on which a first milling drum, a second milling drum, a screw conveying device and a paving device are arranged in sequence from front to back along the forward direction, and also includes: the first milling drum is used to break the asphalt layer, the second milling drum is used to break the water-stabilizing layer, and the crushing directions of the first milling drum and the second milling drum are both toward the forward direction of the fuselage; the first milling drum is composed of a cutter head, an outer cylinder, a rotating mechanism and an adjusting mechanism, and the cutter head is tilted and slidably installed on the outer cylinder; the rotating mechanism is rotatably arranged in the outer cylinder and is hinged to the cutter head, and the rotating mechanism is The cutter head plays an elastic supporting role so that the cutter head remains still when breaking the asphalt layer. When the cutter head contacts the water-stabilizing layer, the cutter head slides toward the inside of the outer cylinder and pushes the rotating mechanism to rotate; the adjusting mechanism is arranged in the outer cylinder, and the adjusting mechanism is used to adjust the supporting force of the rotating mechanism on the cutter head; the aggregate assembly, the aggregate assembly is respectively arranged on the side of the first milling drum and the second milling drum close to the forward direction of the fuselage, and the aggregate assembly is used to collect the crushed debris; the conveying system, the conveying system is arranged on the fuselage, the conveying system is used to convey the asphalt layer debris to the outside of the fuselage, and the conveying system is also used to convey the water-stabilizing layer debris to the spiral conveying device.

[0007] Furthermore, a plurality of mounting rings are fixedly provided on the outer circumferential surface of the outer cylinder, and the plurality of mounting rings are arranged in a circular array in the circumferential direction and are equidistantly arranged in the axial direction; a sleeve cup is provided between the cutter head and the mounting ring, the sleeve cup is fixedly connected to the mounting ring, and the cutter head can slide in the sleeve cup; a fixing rod is fixedly provided on the bottom surface of the cutter head close to the mounting ring, and the fixing rod passes through the bottom of the sleeve cup and extends to the inside of the outer cylinder.

[0008] Furthermore, the slewing mechanism comprises: a slewing ring, which is arranged in the outer cylinder, and a plurality of connecting parts are fixedly arranged on the outer circumference of the slewing ring, and the plurality of connecting parts correspond to the fixed rods one by one, and a connecting rod is arranged between the slewing ring and the fixed rod, and the two ends of the connecting rod are respectively hinged to the slewing ring and the fixed rod; a first abutting block, a plurality of the first abutting blocks are arranged, and the first abutting blocks are fixedly arranged on the inner circumference of the slewing ring at equal distances; a supporting cylinder, which is arranged inside the slewing ring, and the end surfaces on both sides of the supporting cylinder are fixedly connected to the outer cylinder through a sealing cover; a connecting ring, which is arranged between two adjacent slewing rings The inner circumference of the connecting ring is fixedly connected to the supporting tube, and the outer circumference of the connected ring is fixedly connected to the outer tube. Steps are provided on both sides of the connecting ring, and overhangs are provided on both sides of the rotating ring. The steps support the overhangs, and the overhangs can slide on the surfaces of the steps. A second abutment block is installed on the outer circumference of the supporting tube, and the number and position of the second abutment blocks correspond to the first abutment block one by one. A serpentine spring is provided between the first abutment block and the second abutment block, and the serpentine spring always applies a force to the first abutment block in the direction of rotation of the outer tube.

[0009] Furthermore, the adjustment mechanism includes: an adjusting cylinder, which is arranged in the supporting cylinder and is rotatably connected to the supporting cylinder; a sliding groove is opened on the outer circumferential surface of the supporting cylinder, and a connecting block is fixedly provided at the bottom end of the second supporting block, and the connecting block is fixedly connected to the adjusting cylinder after passing through the sliding groove, and the connecting block can slide in the sliding groove; a planetary gear assembly, which includes a ring gear, a planetary gear and a sun gear, the ring gear is fixedly arranged on the inner circumferential surface of the adjusting cylinder, a fixing ring is fixedly arranged between the adjusting cylinder and the sealing cover, the planetary gear is installed on the fixing ring through a second shaft, a third driving device is fixedly arranged in the fixing ring, and the sun gear is fixedly connected to the output end of the third driving device through a first shaft; the third driving device is a hydraulic motor or an electric motor with self-locking.

[0010] Furthermore, the aggregate assembly includes: a spiral aggregate, which is arranged on the side of the first milling drum and the second milling drum close to the forward direction, the spiral aggregate is composed of a spiral blade and a scraper plate, there are two spiral blades, and the two spiral blades are symmetrically arranged, and the scraper plate is fixed between the two spiral blades; a gathering plate, which is arranged on the side of the spiral aggregate close to the forward direction, and an arc groove is provided on the side of the gathering plate close to the spiral aggregate, the spiral aggregate is accommodated in the arc groove, and a discharge port is provided on the side of the gathering plate away from the spiral aggregate, and the discharge port corresponds to the position of the scraper plate; a cleaning roller, which is arranged on the side of the first milling drum and the second milling drum close to the forward direction of the fuselage and is located above the spiral aggregate, and a plurality of cleaning disks are provided on the cleaning roller, and the cleaning disks are located in the gap between adjacent cutter heads; the first milling drum, the second milling drum, the cleaning roller and the spiral aggregate have the same rotation direction.

[0011] Furthermore, it also includes: a first screening device, which is used to screen the water-stabilizing layer fragments so that the water-stabilizing layer fragments are divided into large-particle aggregates and other materials; a crushing device, which is used to crush the large-particle aggregates so that the large-particle aggregates become a type of applicable aggregate and a type of debris; a second screening device, which is used to screen the remaining materials so that the remaining materials are divided into two types of applicable aggregates and two types of debris; the first type of applicable aggregates and the second type of applicable aggregates are conveyed to the screw conveying device through the conveying system, and the first type of debris and the second type of debris are conveyed to the outside of the fuselage through the conveying system.

[0012] Furthermore, a collection port is provided above the screw conveying device, the collection port is connected with the feeding end of the screw conveying device, and the collection port is used to receive two types of applicable aggregates; a feeding port is also provided above the screw conveying device, the feeding port is connected with the collection port, and the feeding port is used to add water, cement, fine aggregate, and a type of applicable aggregate into the screw conveying device.

[0013] Furthermore, the conveying system includes: a first elevator and a first conveyor belt, the first elevator is used to convey the asphalt layer fragments to the first conveyor belt, and the first conveyor belt is used to convey the material to the outside of the fuselage; a second elevator, the second elevator is used to convey the water-stabilizing layer fragments to the first screening device; a fifth conveyor belt, the fifth conveyor belt is arranged below the crushing device, and the fifth conveyor belt is used to convey a type of applicable aggregate to the feeding port; a sixth conveyor belt, the sixth conveyor belt is arranged below the fifth conveyor belt, and the sixth conveyor belt is used to convey a type of debris to the first conveyor belt; a seventh conveyor belt, the seventh conveyor belt is arranged below the second screening device, and the seventh conveyor belt is used to convey the second type of debris to the first conveyor belt.

[0014] Furthermore, the fifth conveyor belt has a mesh structure; and the fifth conveyor belt and the sixth conveyor belt are arranged in parallel.

[0015] The present invention also provides a method for constructing a regenerated water-stabilizing layer, comprising the following steps:

[0016] S1, the first milling drum crushes the asphalt layer, and the asphalt layer fragments are transported to the outside of the fuselage through the conveying system for return to the field for recycling;

[0017] S2, the second milling drum crushes the water-stable layer, and the crushed materials of the water-stable layer are conveyed to the first screening device through the conveying system to screen out the large-particle aggregate and other materials;

[0018] S3, the crushing device crushes the large-particle aggregate, and then screens out a type of applicable aggregate and a type of debris through the fifth conveyor belt during the movement. The type of applicable aggregate is conveyed to the screw conveyor, and the type of debris and asphalt layer debris are collectively conveyed to the outside of the fuselage for return to the field for recycling;

[0019] S4, the second screening device screens the remaining materials to separate the second type of applicable aggregate and the second type of debris, the second type of applicable aggregate is conveyed to the screw conveyor, and the second type of debris, the first type of debris and the asphalt layer debris are collectively conveyed to the outside of the fuselage for return to the field for recycling;

[0020] S5, adding cement, water and fine aggregate into the screw conveyor, stirring and transporting them into the paving device through the screw conveyor;

[0021] S6, the paving device spreads and levels the mixture;

[0022] S7. When insufficient residual material occurs in S6, additional suitable aggregate is added to the screw conveyor;

[0023] S8, compaction by roller;

[0024] S9. Cover the water-stabilizing layer with geotextile and sprinkle water for maintenance for one week.

[0025] The present invention has the following beneficial effects:

[0026] (1) The regenerated water-stabilizing layer construction device is provided with a retractable cutter head and a rotating mechanism, so that the cutter head remains stationary when breaking the asphalt layer, and slides into the outer cylinder when contacting the water-stabilizing layer, thereby avoiding the first milling drum from damaging the existing water-stabilizing layer when breaking the asphalt layer, so that more raw materials constituting the water-stabilizing layer can be preserved, thereby improving the utilization rate of the existing raw materials constituting the water-stabilizing layer, and also facilitating the pressing depth of the first milling drum, thereby improving the stripping effect of the asphalt layer, and then improving the purity of the raw materials of the water-stabilizing layer, so that the structure of the regenerated water-stabilizing layer is more stable.

[0027] (2) The regenerated water-stabilizing layer construction device and method, by providing an adjustment mechanism, adjusts the size of the supporting force of the rotating mechanism on the cutter head. The rotating mechanism can provide appropriate supporting force for the cutter head, so that the cutter head will not cause damage to the water-stabilizing layer when breaking asphalt layers of different hardness, thereby meeting different use sites and improving practicality.

[0028] (3) The device and method for constructing a regenerated water-stabilizing layer are provided with a first screening device, a crushing device and a second screening device. The first screening device is used for preliminary screening, and the large-particle aggregate is processed by the crushing device. The remaining materials are screened again by the second screening device, so as to obtain a suitable aggregate particle size, thereby avoiding the problem that the compressive strength and stability of the regenerated water-stabilizing layer are reduced due to the use of aggregate particles that are too large or too many debris.

[0029] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 It is a side view of the fuselage of the present invention;

[0032] Figure 3 It is a top view of the fuselage of the present invention;

[0033] Figure 4 This is a schematic diagram of the structure of the first milling drum end portion of the present invention;

[0034] Figure 5 It is a cross-sectional view of the internal structure of the first milling drum of the present invention;

[0035] Figure 6 This is a diagram showing the matching of the cutter head of the present invention;

[0036] Figure 7 It is a right view of the internal structure of the first milling drum of the present invention;

[0037] Figure 8 It is the coordination diagram of the rotary structure and the regulating mechanism of the present invention;

[0038] Fig. 9 It is a schematic diagram of the structure of the slewing ring of the present invention;

[0039] Fig.10 This is a diagram showing the coordination of the adjusting cylinder and the slewing ring of the present invention;

[0040] Fig.11 It is a schematic diagram of the structure of the aggregate assembly of the present invention;

[0041] Fig.12 It is a front view of the aggregate assembly of the present invention;

[0042] Fig.13 It is a schematic diagram of the structure of the spiral collector of the present invention;

[0043] Fig.14 This is a schematic diagram of the installation position of the screening machine and the crusher of the present invention;

[0044] Fig.15 This is a schematic diagram of the installation position of the spiral conveying device of the present invention;

[0045] Fig.16 The figure is a flow chart of the method of the present invention.

[0046] In the figure, 1, fuselage; 2, cab; 3, walking device; 4, storage device; 5, first hoist; 501, first discharge outlet; 6, second hoist; 61, second discharge outlet; 7, first screening device; 8, crushing device; 9, second screening device; 10, screw conveying device; 11, paving device; 12, first driving device; 13, first milling drum; 14, second driving device; 15, second milling drum; 16, collecting plate; 161, arc groove; 162, discharge port; 17, cleaning roller; 171, cleaning disk; 18, spiral collector; 181, spiral blade; 182, scraper plate; 19, cutter head; 20, sleeve cup; 21, mounting ring; 22, fixing rod; 23, connecting rod; 24, outer cylinder; 25, slewing ring; 251. extension portion; 252. connection portion; 26. first abutment block; 27. serpentine spring; 28. second abutment block; 281. connection block; 29. ​​support tube; 291. sliding groove; 30. adjustment tube; 31. gear ring; 32. planetary gear; 33. sun gear; 34. first shaft; 35. second shaft; 36. fixing ring; 37. third drive device; 38. cover; 39. drive shaft; 40. collection port; 41. feeding port; 42. discharge port; 43. first conveyor belt; 44. second conveyor belt; 45. third conveyor belt; 46. fourth conveyor belt; 47. fifth conveyor belt; 48. sixth conveyor belt; 49. third elevator; 50. temporary storage bucket; 51. connection ring; 511. step portion; 52. seventh conveyor belt. DETAILED DESCRIPTION

[0047] 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.

[0048] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0049] According to the following Figure 1 - Fig.16 A regenerated water-stabilizing layer construction device and method provided in an embodiment of the present invention are described.

[0050] See also Figure 1 - Figure 5 The embodiment of the present invention provides a regenerated water-stabilizing layer construction device, including a fuselage 1, a cab 2 is provided in front of the fuselage 1, a walking device 3 is provided below the fuselage 1, and a first milling drum 13, a second milling drum 15, a screw conveying device 10 and a paving device 11 are provided on the fuselage 1 in sequence from front to back along the forward direction, wherein the first milling drum 13 is used to crush the asphalt layer, and the second milling drum 15 is used to crush the water-stabilizing layer, thereby realizing double-layer milling of the road surface to facilitate subsequent regeneration work, and the crushing directions of the first milling drum 13 and the second milling drum 15 are both toward the forward direction of the fuselage 1, and the adjustment of the milling depth can be achieved by controlling the height of the first milling drum 13 and the second milling drum 15. Usually, a hydraulic cylinder is used to adjust the height of the milling drum, which has mature applications in the prior art and will not be repeated here.

[0051] The first milling drum 13 is composed of a cutter head 19, an outer cylinder 24, a rotating mechanism and an adjusting mechanism. The cutter head 19 is tilted and slidably installed on the outer cylinder 24. The cutter head 19 is tilted in the direction of rotation of the outer cylinder 24, and the tilt angle is at least greater than 20°. The tilt angle here refers to the angle between the line connecting the vertex of the cutter head 19 and the axis of the outer cylinder 24 and the axis of the cutter head 19. The second milling drum 15 is a commonly used milling drum. The cutter head 19 is fixedly connected to the outer cylinder 24 and does not have a rotating mechanism and an adjusting mechanism.

[0052] The above-mentioned slewing mechanism is rotatably arranged in the outer cylinder 24 and is hinged with the cutter head 19. The slewing mechanism plays an elastic supporting role for the cutter head 19. Since the main components of the asphalt layer are asphalt, sand and gravel, etc., and the main components of the water-stable layer are cement, gravel, sand, etc., the softness of asphalt makes the hardness of the asphalt layer lower than that of the water-stable layer. Generally, the compressive strength of the water-stable layer is above 150MPa, and the asphalt layer only needs to reach above 50MPa. Therefore, the reaction force received by the cutter head 19 when breaking the asphalt layer is small, and the reaction force received by the cutter head 19 when breaking the water-stable layer is large. The supporting force provided by the slewing mechanism to the cutter head 19 is balanced with the thrust applied by the cutter head 19 to the slewing mechanism. Thereby, the cutter head 19 remains stationary when breaking the asphalt layer, and when the cutter head 19 contacts the water-stable layer, the thrust applied by the cutter head 19 to the rotating mechanism will suddenly increase, so that the cutter head 19 can overcome the supporting force of the rotating mechanism and push the rotating mechanism to rotate, and then the cutter head 19 slides into the outer cylinder 24, thereby avoiding the first milling drum 13 from damaging the existing water-stable layer when breaking the asphalt layer, so that more raw materials constituting the water-stable layer can be preserved, thereby improving the utilization rate of the existing raw materials constituting the water-stable layer, and also facilitating the pressing depth of the first milling drum 13, thereby improving the stripping effect of the asphalt layer, and then improving the purity of the raw materials of the water-stable layer, so that the structure of the regenerated water-stable layer is more stable.

[0053] The adjusting mechanism is disposed in the outer cylinder 24 and is used to adjust the supporting force of the rotary mechanism on the cutter head 19. The rotary mechanism can provide appropriate supporting force for the cutter head 19 to meet different usage sites and improve practicality.

[0054] In addition, in order to facilitate the collection of crushed debris, a material collection assembly is provided on one side of the first milling drum 13 and the second milling drum 15 close to the forward direction of the fuselage 1.

[0055] A conveying system is also provided on the fuselage 1, which is used to convey the asphalt layer fragments to the outside of the fuselage 1 for return to the field for regeneration, and the conveying system is also used to convey the water-stable layer fragments to the screw conveying device 10, so as to mix and stir the water-stable layer fragments to regenerate into a new water-stable layer.

[0056] In this embodiment, the asphalt layer is crushed by double-layer milling and then transferred for return to the site for regeneration. After the water-stable layer is crushed, cold regeneration can be completed on the fuselage 1, avoiding the return of the water-stable layer fragments for regeneration, thereby increasing the construction speed of the regeneration work.

[0057] Combination Figure 5 - Figure 7In order to facilitate the movement of the cutter head 19, a plurality of mounting rings 21 are fixedly provided on the outer circumferential surface of the outer cylinder 24. The mounting rings 21 and the outer cylinder 24 can be connected by threads, or by welding, integral forming, etc. The plurality of mounting rings 21 are arranged in a circular array in the circumferential direction and are arranged equidistantly in the axial direction. A sleeve cup 20 is provided between the cutter head 19 and the mounting ring 21. The end of the sleeve cup 20 away from the mounting ring 21 is an open end. The closed end of the sleeve cup 20 is fixedly connected to the mounting ring 21, and can be connected by threads for easy disassembly and assembly. The cutter head 19 can slide in the sleeve cup 20, extend the sleeve cup 20 from the open end, or retract into the sleeve cup 20 from the open end.

[0058] In addition, a fixing rod 22 is fixedly provided on the bottom surface of the cutter head 19 close to the mounting ring 21 . The fixing rod 22 passes through the bottom of the sleeve cup 20 and extends to the inside of the outer cylinder 24 .

[0059] Combination Figure 5 - Fig. 9 The above-mentioned rotating mechanism includes a rotating ring 25, which is arranged in the outer cylinder 24. A plurality of connecting parts 252 are fixedly provided on the outer circumference of the rotating ring 25. The plurality of connecting parts 252 correspond to the fixed rod 22 one by one. A connecting rod 23 is provided between the rotating ring 25 and the fixed rod 22. The two ends of the connecting rod 23 are respectively hinged to the rotating ring 25 and the fixed rod 22, so that when the cutter head 19 slides in the sleeve cup 20, the rotating ring 25 can be driven to rotate through the fixed rod 22 and the connecting rod 23, and a plurality of first abutting blocks 26 are fixedly provided at equal intervals on the inner circumference of the rotating ring 25, and the first abutting blocks 26 rotate synchronously with the rotating ring 25.

[0060] In addition, a support cylinder 29 is provided inside the rotating ring 25, and the support cylinder 29 rotates synchronously with the outer cylinder 24. Specifically, a cover 38 is provided at both ends of the outer cylinder 24, and the end surfaces on both sides of the outer cylinder 24 and the support cylinder 29 are fixedly connected to the cover 38. A drive shaft 39 is installed on one side of the cover 38, and the drive shaft 39 is driven by the first drive device 12 on the fuselage 1, so that when the outer cylinder 24 rotates, the support cylinder 29 rotates synchronously therewith.

[0061] In addition, a connecting ring 51 is provided between two adjacent rotating rings 25, and the connecting ring 51 has a limiting effect on the rotating ring 25 to prevent the rotating ring 25 from axially moving. The inner circumference of the connecting ring 51 is fixedly connected to the support cylinder 29, and the outer circumference of the connecting ring 51 is fixedly connected to the outer cylinder 24, so as to fix the position of the connecting ring 51, and stepped portions 511 are provided on both sides of the connecting ring 51, and the stepped portions 511 are close to the axis of the connecting ring 51, and the thickness of the stepped portions 511 is greater than the connecting ring 51. The thickness of the ring 51 is correspondingly provided with an overhanging portion 251 on both sides of the slewing ring 25, the overhanging portion 251 is close to the outer peripheral surface of the slewing ring 25, and the thickness of the overhanging portion 251 is greater than the thickness of the slewing ring 25. During installation, the overhanging portion 251 rests on the surface of the step portion 511, so that the step portion 511 supports the overhanging portion 251, and the overhanging portion 251 can slide on the surface of the step portion 511, thereby supporting and limiting the slewing ring 25.

[0062] In addition, second abutting blocks 28 are installed on the outer circumferential surface of the support tube 29 , and the number and positions of the second abutting blocks 28 correspond one-to-one to those of the first abutting blocks 26 .

[0063] In addition, a serpentine spring 27 is provided between the first abutting block 26 and the second abutting block 28. There are multiple serpentine springs 27, and the multiple serpentine springs 27 are arranged in an arc between the rotating ring 25 and the support tube 29. One end of a single serpentine spring 27 is fixedly connected to the first abutting block 26, and the other end is fixedly connected to the second abutting block 28. The serpentine spring 27 always applies a force to the first abutting block 26 in the direction of rotation of the outer tube 24, thereby providing a supporting force to the cutter head 19 through the serpentine spring 27.

[0064] In this embodiment, when the cutter head 19 contacts the water-stable layer, the force provided by the serpentine spring 27 is not enough to break the water-stable layer, so that the cutter head 19 is forced to slide into the sleeve cup 20, thereby driving the rotating ring 25 to rotate and compress the serpentine spring 27. After the cutter head 19 moves away from the water-stable layer, the serpentine spring 27 rebounds and drives the cutter head 19 to reset.

[0065] Combination Figure 7 - Fig.10 The above-mentioned adjustment mechanism includes an adjustment cylinder 30, which is arranged in the support cylinder 29, and the adjustment cylinder 30 is rotatably connected to the support cylinder 29. Specifically, bearings can be installed in the adjustment cylinder 30 and the support cylinder 29 so that the rotation of the two does not interfere with each other.

[0066] In addition, a sliding groove 291 is provided on the outer circumferential surface of the support cylinder 29, and a connecting block 281 is fixedly provided at the bottom end of the second supporting block 28. The connecting block 281 passes through the sliding groove 291 and is fixedly connected to the adjusting cylinder 30, and the connecting block 281 can slide in the sliding groove 291, so that when the adjusting cylinder 30 rotates, it can drive the connecting block 281 to rotate. When the adjusting cylinder 30 rotates in the direction of rotation of the outer cylinder 24, the arc length between the second supporting block 28 and the first supporting block 26 is reduced, thereby compressing the serpentine spring 27, and then increasing the force of the serpentine spring 27 on the first supporting block 26, that is, applying a thrust to the slewing ring 25 in the direction of rotation of the outer cylinder 24, thereby increasing the supporting force of the slewing ring 25 on the cutter head 19, so that the cutter head 19 can break harder road surfaces. Conversely, the supporting force of the slewing ring 25 on the cutter head 19 can be reduced to reduce the crushing force of the cutter head 19.

[0067] In addition, in order to drive the adjustment cylinder 30 to rotate, a planetary gear assembly is also provided, and the planetary gear assembly includes a ring gear 31, a planetary gear 32 and a sun gear 33, wherein the ring gear 31 is fixedly arranged on the inner circumference of the adjustment cylinder 30, a fixing ring 36 is fixedly arranged between the adjustment cylinder 30 and the cover 38, and preferably the fixing ring 36 is fixedly connected to the support cylinder 29, and the planetary gear 32 and the sun gear 33 are both mounted on the fixing ring 36. Specifically, the planetary gear 32 is mounted on the fixing ring 36 through the second shaft body 35, and a third driving device 37 is fixedly arranged in the fixing ring 36. The sun gear 33 is connected to the fixing ring 36 through the first shaft body 34. The output end of the third drive device 37 is fixedly connected, so that the planetary gear assembly is driven to rotate through the third drive device 37, and then the adjustment cylinder 30 is driven to rotate. In order to ensure that the position of the adjustment cylinder 30 remains unchanged after adjustment, the third drive device 37 is preferably a hydraulic motor or a self-locking motor. When the third drive device 37 is a self-locking motor, after the adjustment is completed, the motor self-locks so that the adjustment cylinder 30 cannot rotate. When the third drive device 37 is a hydraulic motor, after the adjustment is completed, the hydraulic oil stops flowing, so that the hydraulic motor remains in the current position, thereby limiting the position of the adjustment cylinder 30.

[0068] In the present embodiment, when there is no need to adjust the supporting force of the cutter head 19, the third drive device 37 is locked and does not rotate. When the first drive device 12 drives the drive shaft 39 to rotate, the outer cylinder 24, the cutter head 19, and the support cylinder 29 all rotate synchronously. Since the second shaft 35 of the rotating shaft of the planetary gear 32 is fixed on the fixed ring 36, and the third drive device 37 is also fixedly installed on the fixed ring 36, the fixed ring 36 and the planetary gear assembly do not rotate relative to each other, that is, the adjustment cylinder 30 and the planetary gear assembly both rotate together with the fixed ring 36. At this time, the slewing ring 25 also rotates with the adjustment cylinder 30 under the push of the serpentine spring 27. When it is necessary to adjust the supporting force of the cutter head 19, the third drive device 37 rotates a certain angle while rotating on its own, thereby driving the planetary gear assembly to rotate, and then driving the adjustment cylinder 30 to rotate a certain angle to complete the adjustment.

[0069] Combination Figure 3 , Fig.11 , Fig.12 and Fig.13 The above-mentioned material collection assembly includes a spiral collector 18, which is arranged on the side of the first milling drum 13 and the second milling drum 15 close to the forward direction of the fuselage 1, so that the milling drum can directly bring the crushed materials to the spiral collector 18 after crushing. The spiral collector 18 is composed of a spiral blade 181 and a scraper plate 182. There are two spiral blades 181, and the two spiral blades 181 are symmetrically arranged. The scraper plate 182 is fixed between the two spiral blades 181. When the spiral collector 18 rotates, the two spiral blades 181 bring the crushed materials to the position between the two, and then the scraper plate 182 takes the crushed materials away.

[0070] In addition, a collecting plate 16 is provided on the side of the spiral collector 18 close to the forward direction, and an arc groove 161 is provided on the side of the collecting plate 16 close to the spiral collector 18. The spiral collector 18 is accommodated in the arc groove 161, so that the spiral collector 18 can collect debris more efficiently and quickly, thereby improving the collection speed of the debris. A discharge port 162 is provided on the side of the collecting plate 16 away from the spiral collector 18, and the discharge port 162 corresponds to the position of the scraper plate 182, so that the debris taken away by the scraper plate 182 can be discharged from the discharge port 162.

[0071] In addition, a cleaning roller 17 is provided on the side of the first milling drum 13 and the second milling drum 15 close to the forward direction of the fuselage 1, and the cleaning roller 17 is located above the spiral collector 18. A plurality of cleaning disks 171 are provided on the cleaning roller 17. The cleaning disks 171 are located in the gap between adjacent cutter heads 19 to facilitate cleaning of debris stuck between the cutter heads 19, so that the debris can be concentrated on the side of the first milling drum 13 and the second milling drum 15 close to the aggregate plate 16.

[0072] Furthermore, for ease of control, the first milling drum 13 , the second milling drum 15 , the cleaning roller 17 and the spiral collector 18 preferably have the same rotation direction, wherein the first milling drum 13 is driven by the first driving device 12 , and the second milling drum 15 is driven by the second driving device 14 .

[0073] Combination Figure 2 , Figure 3 and Fig.14 In order to obtain a suitable aggregate size and improve the quality of the regenerated water-stabilizing layer, a first screening device 7 is also installed on the fuselage 1. The first screening device 7 is used to screen the water-stabilizing layer fragments so that the water-stabilizing layer fragments are divided into large-particle aggregates and other materials, wherein the particle size of the large-particle aggregate is preferably greater than 35 mm, and the particle size of the other materials is less than or equal to 35 mm.

[0074] In addition, a crushing device 8 is installed on the fuselage 1, which is used to crush large-particle aggregates to break the large-particle aggregates into a type of applicable aggregate and a type of debris, wherein the particle size of the applicable aggregate is preferably 3mm-35mm, and the particle size of the debris is less than 3mm.

[0075] Furthermore, a second screening device 9 is provided, and the second screening device 9 is used to screen the remaining materials so that the remaining materials are divided into two types of applicable aggregates and two types of debris;

[0076] In this embodiment, Class I applicable aggregate and Class II applicable aggregate are conveyed to the screw conveyor 10 through a conveying system, and are used as raw materials for the regenerated water-stabilizing layer after stirring and mixing. Class I debris and Class II debris are conveyed to the outside of the fuselage 1 through a conveying system to obtain a suitable aggregate particle size, thereby avoiding the problem of reduced compressive resistance and stability of the regenerated water-stabilizing layer due to the use of too large aggregate particle size or too much debris.

[0077] Combination Figure 2 , Figure 3 and Fig.15 In order to facilitate on-site mixing and stirring, a collection port 40 is provided above the screw conveying device 10, and the collection port 40 is connected to the feeding end of the screw conveying device 10. The collection port 40 is used to receive the second type of applicable aggregate. The second type of applicable aggregate screened by the second screening device 9 is directly put into use.

[0078] In addition, a feeding port 41 is provided above the screw conveying device 10, and the feeding port 41 is connected to the aggregate port 40. The feeding port 41 is used to add water, cement, fine aggregate, and other water-stabilizing layer materials that need to be supplemented into the screw conveying device 10. When the amount is small, a storage device 4 can be installed on the fuselage 1 to facilitate direct acquisition of the required raw materials from the storage device 4. When the amount is large, a transport vehicle can be equipped to load the raw materials, and then the raw materials on the transport vehicle are transported to the feeding port 41. A type of applicable aggregate liquid after crushing can be put into the screw conveying device 10 through the feeding port 41, and the screw conveying device 10 transports the mixed materials to the paving device 11 through the discharge port 42 at the other end.

[0079] Combination Figure 2 , Figure 3 , Fig.14 and Fig.15 The conveying system includes a first elevator 5 and a first conveyor belt 43. The first elevator 5 is used to lift the asphalt layer crushed materials and convey the asphalt layer crushed materials to the first conveyor belt 43 through the first discharge port 501. The first conveyor belt 43 is used to convey the materials to the outside of the fuselage 1.

[0080] In addition, a second elevator 6 is provided on the fuselage 1, and the second elevator 6 is used to lift the water-stable layer crushed material and transfer the water-stable layer crushed material to the first screening device 7 through the second discharge port 61. Preferably, the first elevator 5 and the second elevator 6 are bucket elevators to reduce the horizontal span of the device, thereby reducing the length of the fuselage 1.

[0081] In addition, a fifth conveyor belt 47 is provided below the crushing device 8, and the fifth conveyor belt 47 is used to convey a type of applicable aggregate to the feeding port 41. A sixth conveyor belt 48 is provided below the fifth conveyor belt 47, and the sixth conveyor belt 48 is used to convey a type of debris to the first conveyor belt 43. The fifth conveyor belt 47 has a mesh structure, and the fifth conveyor belt 47 and the sixth conveyor belt 48 are arranged in parallel, so that the crushed material can be directly screened into a type of applicable aggregate and a type of debris when being conveyed through the fifth conveyor belt 47, and the type of debris directly falls through the mesh and falls to the sixth conveyor belt 48.

[0082] Furthermore, it also includes a seventh conveyor belt 52 , which is disposed below the second screening device 9 and is used to convey the second type of debris to the first conveyor belt 43 .

[0083] In this embodiment, when there is a height difference between the fifth conveyor belt 47 and the feeding port 41, a third elevator 49 can be set between the two. When there is enough space, the third elevator 49 can use a bucket elevator. When the space is small, a scraper conveyor can be used. When using a scraper conveyor, a temporary storage bucket 50 can be installed at the joint between the fifth conveyor belt 47 and the third elevator 49 to facilitate the scraper conveyor to take materials from the temporary storage bucket 50.

[0084] Since there is a height difference between the seventh conveyor belt 52 and the first conveyor belt 43, a second conveyor belt 44 may be arranged between the two, so that the material in the seventh conveyor belt 52 can be transferred to the first conveyor belt 43 through the second conveyor belt 44. A fourth conveyor belt 46 may be arranged between the sixth conveyor belt 48 and the second conveyor belt 44, so that the material on the sixth conveyor belt 48 can be transported to the second conveyor belt 44. If the height difference between the fourth conveyor belt 46 and the second conveyor belt 44 is large, a third conveyor belt 45 may be arranged between the fourth conveyor belt 46 and the second conveyor belt 44.

[0085] The present invention also provides a method for constructing a regenerated water-stabilizing layer, comprising the following steps:

[0086] S1, the first milling drum 13 breaks the asphalt layer, and the asphalt layer fragments are transported to the outside of the fuselage 1 through the conveying system for return to the field for regeneration;

[0087] S2, the second milling drum 15 crushes the water-stable layer, and the crushed materials of the water-stable layer are conveyed to the first screening device 7 through the conveying system to screen out the large-particle aggregate and the remaining materials;

[0088] S3, the crushing device 8 crushes the large-particle aggregate, and then screens out a type of applicable aggregate and a type of debris through the fifth conveyor belt 47 during the movement. The type of applicable aggregate is conveyed to the screw conveying device 10, and the type of debris and the asphalt layer debris are collectively conveyed to the outside of the fuselage 1 for return field regeneration processing;

[0089] S4, the second screening device 9 screens the remaining materials to separate the second type of applicable aggregate and the second type of debris, the second type of applicable aggregate is conveyed to the screw conveying device 10, and the second type of debris, the first type of debris and the asphalt layer debris are collectively conveyed to the outside of the fuselage 1 for return to the field for recycling;

[0090] S5, adding cement, water and fine aggregate into the screw conveying device 10, stirring and transporting them into the paving device 11 through the screw conveying device 10;

[0091] S6, the paving device 11 spreads and levels the mixture;

[0092] S7, when there is insufficient residual material in S6, adding additional applicable aggregate into the screw conveying device 10;

[0093] S8, compaction by roller;

[0094] S9. Cover the water-stabilizing layer with geotextile and sprinkle water for maintenance for one week.

[0095] When in use (working), the first milling drum 13 breaks the asphalt layer, and the asphalt layer fragments are conveyed to the outside of the fuselage 1 through the conveying system for return to the field for regeneration. When the first milling drum 13 contacts the water-stable layer, the cutter head 19 shrinks into the sleeve cup 20 to avoid damaging the water-stable layer. Then the second milling drum 15 breaks the water-stable layer, and the broken water-stable layer fragments are conveyed to the first screening device 7 through the conveying device for preliminary screening. The large-particle aggregate is processed by the crushing device 8, and the remaining materials are screened again by the second screening device 9. Then, the obtained suitable aggregate is put into the screw conveying device 10 through the conveying device, and cement, water and fine aggregate are added. The mixed water-stable layer material is transported to the paving device 11 for paving and leveling.

[0096] When it is necessary to adjust the crushing force of the first milling drum 13 for use on different road surfaces, the planetary gear set is driven to rotate by the third drive device 37, thereby driving the adjustment cylinder 30 to rotate a certain angle and compressing the serpentine spring 27, thereby increasing the force of the serpentine spring 27 on the first abutment block 26, that is, applying a thrust to the slewing ring 25 in the direction of rotation of the outer cylinder 24, thereby increasing the supporting force of the slewing ring 25 on the cutter head 19, so that the cutter head 19 can crush harder road surfaces. Conversely, the supporting force of the slewing ring 25 on the cutter head 19 can be reduced to reduce the crushing force of the cutter head 19.

[0097] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0098] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A regenerated water-stabilizing layer construction device, comprising a machine body (1), wherein the machine body (1) is provided with a first milling drum (13), a second milling drum (15), a screw conveying device (10) and a paving device (11) in sequence from front to back in a forward direction, characterized in that: Also includes: The first milling drum (13) is used to break the asphalt layer, and the second milling drum (15) is used to break the water-stable layer, and the crushing directions of the first milling drum (13) and the second milling drum (15) are both towards the forward direction of the fuselage (1); The first milling drum (13) is composed of a cutter head (19), an outer cylinder (24), a rotating mechanism and an adjusting mechanism, and the cutter head (19) is tiltably and slidably mounted on the outer cylinder (24); The rotary mechanism is rotatably disposed in the outer cylinder (24) and is hinged to the cutter head (19). The rotary mechanism plays an elastic supporting role on the cutter head (19), so that the cutter head (19) remains stationary when breaking the asphalt layer. When the cutter head (19) contacts the water-stable layer, the cutter head (19) slides toward the inside of the outer cylinder (24) and pushes the rotary mechanism to rotate. The adjustment mechanism is disposed in the outer cylinder (24), and is used to adjust the magnitude of the support force of the rotary mechanism on the cutter head (19); Aggregate components, the aggregate components are respectively arranged on one side of the first milling drum (13) and the second milling drum (15) close to the forward direction of the machine body (1), and the aggregate components are used to collect crushed debris; A conveying system, the conveying system being arranged on the fuselage (1), the conveying system being used to convey the asphalt layer crushed materials to the outside of the fuselage (1), and the conveying system being used to convey the water-stabilizing layer crushed materials to the screw conveying device (10); A plurality of mounting rings (21) are fixedly disposed on the outer circumferential surface of the outer cylinder (24), and the plurality of mounting rings (21) are arranged in a circular array in the circumferential direction and are equidistantly arranged in the axial direction; A sleeve cup (20) is provided between the cutter head (19) and the mounting ring (21); the sleeve cup (20) is fixedly connected to the mounting ring (21), and the cutter head (19) is capable of sliding in the sleeve cup (20); A fixing rod (22) is fixedly provided on the bottom surface of the cutter head (19) on the side close to the mounting ring (21), and the fixing rod (22) passes through the bottom of the sleeve cup (20) and extends to the inside of the outer cylinder (24); The rotary mechanism comprises: a slewing ring (25), the slewing ring (25) being arranged in the outer cylinder (24), a plurality of connecting parts (252) being fixedly arranged on the outer peripheral surface of the slewing ring (25), the plurality of connecting parts (252) corresponding one to one with the fixed rod (22), a connecting rod (23) being arranged between the slewing ring (25) and the fixed rod (22), the two ends of the connecting rod (23) being respectively hinged to the slewing ring (25) and the fixed rod (22); A first abutting block (26), wherein a plurality of the first abutting blocks (26) are provided, and the first abutting blocks (26) are fixedly arranged at equal intervals on the inner circumference of the rotating ring (25); A support cylinder (29), the support cylinder (29) being arranged inside the rotary ring (25), and end surfaces on both sides of the support cylinder (29) being fixedly connected to the outer cylinder (24) via a sealing cover (38); A connecting ring (51), the connecting ring (51) being arranged between two adjacent rotating rings (25), the inner circumferential surface of the connecting ring (51) being fixedly connected to the supporting tube (29), the outer circumferential surface of the connecting ring (51) being fixedly connected to the outer tube (24), the connecting ring (51) being provided with stepped portions (511) on both sides, the rotating ring (25) being provided with extended portions (251) on both sides, the stepped portions (511) supporting the extended portions (251), and the extended portions (251) being able to slide on the surfaces of the stepped portions (511); a second abutting block (28), the second abutting block (28) being mounted on the outer peripheral surface of the supporting tube (29), the number and position of the second abutting blocks (28) corresponding one-to-one to the first abutting blocks (26); A serpentine spring (27), wherein the serpentine spring (27) is disposed between the first abutting block (26) and the second abutting block (28), and the serpentine spring (27) always applies a force to the first abutting block (26) in a direction of rotation of the outer cylinder (24).

2. A regenerated water-stabilizing layer construction device according to claim 1, characterized in that: The regulating mechanism comprises: An adjusting cylinder (30), wherein the adjusting cylinder (30) is disposed in the supporting cylinder (29), and the adjusting cylinder (30) is rotatably connected to the supporting cylinder (29); The outer circumferential surface of the support tube (29) is provided with a sliding groove (291); the bottom end of the second abutting block (28) is fixedly provided with a connecting block (281); the connecting block (281) passes through the sliding groove (291) and is fixedly connected to the adjusting tube (30); and the connecting block (281) is capable of sliding in the sliding groove (291); A planetary gear assembly, the planetary gear assembly comprising a ring gear (31), a planetary gear (32) and a sun gear (33), the ring gear (31) being fixedly arranged on the inner circumferential surface of an adjusting cylinder (30), a fixing ring (36) being fixedly arranged between the adjusting cylinder (30) and a cover (38), the planetary gear (32) being mounted on the fixing ring (36) via a second shaft (35), a third driving device (37) being fixedly arranged in the fixing ring (36), and the sun gear (33) being fixedly connected to an output end of the third driving device (37) via a first shaft (34); The third driving device (37) is a hydraulic motor or a self-locking electric motor.

3. A regenerated water-stabilizing layer construction device according to claim 1, characterized in that: The aggregate assembly comprises: A spiral material collector (18), the spiral material collector (18) being arranged on one side of the first milling drum (13) and the second milling drum (15) close to the advancing direction, the spiral material collector (18) being composed of a spiral blade (181) and a scraper plate (182), two spiral blades (181) being provided, and the two spiral blades (181) being arranged symmetrically, and the scraper plate (182) being fixedly arranged between the two spiral blades (181); A material collecting plate (16), the material collecting plate (16) being arranged on a side of the spiral material collecting device (18) close to the advancing direction, an arc-shaped groove (161) being provided on the side of the material collecting plate (16) close to the spiral material collecting device (18), the spiral material collecting device (18) being accommodated in the arc-shaped groove (161), and a material discharging port (162) being provided on a side of the material collecting plate (16) away from the spiral material collecting device (18), the material discharging port (162) corresponding to the position of the scraper plate (182); a cleaning roller (17), the cleaning roller (17) being arranged on a side of the first milling drum (13) and the second milling drum (15) close to the forward direction of the machine body (1) and being located above the spiral collector (18); the cleaning roller (17) being provided with a plurality of cleaning discs (171), the cleaning discs (171) being located in gaps between adjacent cutter heads (19); The first milling drum (13), the second milling drum (15), the cleaning roller (17) and the spiral collector (18) rotate in the same direction.

4. A regenerated water-stabilizing layer construction device according to claim 1, characterized in that: Also includes: A first screening device (7), the first screening device (7) is used to screen the water-stable layer fragments so as to separate the water-stable layer fragments into large-particle aggregates and other materials; A crushing device (8), wherein the crushing device (8) is used to crush the large-particle aggregate so that the large-particle aggregate becomes a type of usable aggregate and a type of debris; A second screening device (9), the second screening device (9) is used to screen the remaining materials so that the remaining materials are divided into two types of applicable aggregates and two types of debris; The first type of applicable aggregate and the second type of applicable aggregate are conveyed to the screw conveying device (10) through a conveying system, and the first type of debris and the second type of debris are conveyed to the outside of the fuselage (1) through the conveying system.

5. A regenerated water-stabilizing layer construction device according to claim 4, characterized in that: A material collection port (40) is provided above the screw conveying device (10), the material collection port (40) is in communication with a feeding end of the screw conveying device (10), and the material collection port (40) is used to receive the second type of applicable aggregate; A feeding port (41) is also provided above the screw conveying device (10), the feeding port (41) being in communication with the aggregate port (40), and the feeding port (41) being used to add water, cement, fine aggregate, and a class of applicable aggregates into the screw conveying device (10).

6. A regenerated water stabilizing layer construction device according to claim 5, characterized in that: The delivery system comprises: a first elevator (5) and a first conveyor belt (43), wherein the first elevator (5) is used to convey the asphalt layer crushed material to the first conveyor belt (43), and the first conveyor belt (43) is used to convey the material to the outside of the fuselage (1); A second elevator (6), the second elevator (6) being used to convey the crushed material of the water-stabilizing layer to the first screening device (7); a fifth conveyor belt (47), the fifth conveyor belt (47) being arranged below the crushing device (8), the fifth conveyor belt (47) being used to convey a type of applicable aggregate to the feeding port (41); a sixth conveyor belt (48), the sixth conveyor belt (48) being arranged below the fifth conveyor belt (47), the sixth conveyor belt (48) being used to convey a type of debris to the first conveyor belt (43); A seventh conveyor belt (52), the seventh conveyor belt (52) being arranged below the second screening device (9), the seventh conveyor belt (52) being used to convey the second type of debris to the first conveyor belt (43).

7. A regenerated water-stabilizing layer construction device according to claim 6, characterized in that: The fifth conveyor belt (47) has a mesh structure; The fifth conveyor belt (47) and the sixth conveyor belt (48) are arranged in parallel.

8. A method for constructing a regenerated water stabilizing layer, characterized in that: The construction method using a regenerated water-stabilizing layer construction device according to any one of claims 1 to 7 comprises the following steps: S1, the first milling drum (13) crushes the asphalt layer, and the crushed asphalt layer is transported to the outside of the machine body (1) through a conveying system for return to the field for recycling; S2, the second milling drum (15) crushes the water-stable layer, and the crushed materials of the water-stable layer are conveyed to the first screening device (7) through the conveying system to screen out large-particle aggregates and other materials; S3, the crushing device (8) crushes the large-particle aggregate, and then screens the first type of applicable aggregate and the second type of debris during the movement through the fifth conveyor belt (47), the first type of applicable aggregate is conveyed to the screw conveyor (10), and the first type of debris and asphalt layer debris are collectively conveyed to the outside of the fuselage (1) for return to the field for recycling; S4, the second screening device (9) screens the remaining materials to separate the second type of applicable aggregate and the second type of debris, the second type of applicable aggregate is conveyed to the screw conveying device (10), and the second type of debris, the first type of debris and the asphalt layer debris are collectively conveyed to the outside of the fuselage (1) for return to the field for recycling; S5, adding cement, water and fine aggregate into the screw conveying device (10), stirring and transporting the cement, water and fine aggregate into the paving device (11) through the screw conveying device (10); S6, the paving device (11) spreads and levels the mixture; S7, when there is insufficient residual material in S6, adding additional suitable aggregate into the screw conveying device (10); S8, compaction by roller; S9. Cover the water-stabilizing layer with geotextile and sprinkle water for maintenance for one week.

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