Road old material regeneration paving device

Abstract

The invention relates to the technical field of road maintenance equipment, in particular to a road old material regeneration paving device which comprises a conveying assembly connected with a cement pump truck, a processing assembly, a crushing assembly, a collecting assembly, a stirring assembly and a paving assembly. A supporting pipeline, a spiral conveying paddle, a driven rod, a reciprocating type first sleeve and a first rotating shaft with fan blades are arranged in the processing assembly, a matched screening conveying barrel and a filter screen are arranged, and the stirring assembly is externally connected with a hot air box. During working, old pavement materials are crushed by the crushing assembly and then enter the conveying cylinder, through one-way rotating screening, hot air drying and mechanical transmission dust removal, qualified aggregates are fed into the stirring assembly to be compounded, stirred and regenerated, and finally pavement repairing is completed through the pavement assembly. Dust removal operation is achieved through pure mechanical transmission, the hidden danger that a motor is damaged by dust is avoided, closed-loop operation of crushing, screening, drying, regeneration and paving is achieved through the whole machine, the old material recycling rate is high, the equipment failure rate is low, environment protection and energy saving are achieved, and the pavement patching quality is stable and reliable.

Description

Technical Field

[0001] This invention relates to the field of road maintenance equipment technology, and in particular to a road regeneration and paving device. Background Technology

[0002] Asphalt pavement is the core paving structure of municipal roads and highway networks in my country. It is subjected to multiple influences over long periods, including vehicle traffic loads, rainwater erosion, and temperature variations, making it highly susceptible to structural defects such as potholes, loosening, and cracking. Consequently, the market demand for pavement repair and maintenance continues to rise. Traditional road repair operations often employ a method of milling waste asphalt and transporting it off-site for disposal, followed by purchasing new asphalt for on-site backfilling. This not only results in extremely low recycling rates of waste asphalt aggregates but also significantly increases maintenance costs due to material transportation and new material procurement. Furthermore, the milling and transportation processes easily generate dust pollution and solid waste accumulation, contradicting the current development philosophy of green, low-carbon, and resource-recycling road maintenance. Against this backdrop, on-site asphalt recycling technology is gradually becoming the mainstream development direction. Integrated paving devices that can achieve on-site crushing, sorting, recycling, and paving of old materials are becoming increasingly important due to their advantages in adapting to the precise repair of scattered potholes and reducing construction processes. This has made them key equipment for solving the pain points of traditional maintenance and improving the recycling rate of old materials. The industry's demand for efficient, environmentally friendly, and stable integrated recycling paving devices is growing increasingly urgent.

[0003] Currently available small-scale asphalt recycling paving equipment still suffers from numerous technical defects that make it difficult to meet actual maintenance needs: Firstly, the dust removal system often uses an external motor drive, which makes it easy for asphalt dust to enter the motor during operation, causing wear on transmission components and short circuits, resulting in a high equipment failure rate and high maintenance costs. Summary of the Invention

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

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a road old material recycling paving device, which includes a processing component, a crushing component connected to the inside of the processing component, a collecting component and a mixing component disposed at both ends of the processing component, and a paving component disposed at the lower end of the processing component; The processing component includes a support pipe connected to the crushing component, a spiral conveyor paddle disposed inside the support pipe, a first rotating shaft rotatably disposed inside the support pipe, a fan blade disposed on the outer wall of the first rotating shaft, and a spiral groove disposed on the outer wall of the first rotating shaft, wherein the spiral groove is connected to a flared end near the spiral conveyor paddle. A driven rod is provided at one end of the spiral conveyor near the first rotating shaft, a bidirectional threaded groove is provided on the outer wall of the driven rod, a first sleeve is provided on the outer wall of the driven rod, a first slider is provided on the inner wall of the first sleeve and can slide along the inside of the bidirectional threaded groove, and a second slider that can slide along the inside of the spiral groove is rotatably installed on the end of the first sleeve near the first rotating shaft, and a first elastic element is provided between the second slider and the first sleeve.

[0006] As a preferred embodiment of the road recycled paving device of the present invention, the supporting pipe is provided with a conveying cylinder, and the conveying cylinder is rotatably connected to the spiral conveyor. The conveying cylinder is provided with a first support rod array at one end near the driven rod, and a filter screen is provided between two of the first support rods.

[0007] In a preferred embodiment of the road reclaimed material paving device of the present invention, a limiting ring is connected between a plurality of first support rods.

[0008] As a preferred embodiment of the road recycled paving device of the present invention, the inner wall of the limiting ring is provided with a first groove, an abutment block is rotatably provided inside the first groove, and a first inclined surface is provided at the bottom of the abutment block, and a second elastic member is provided between the abutment block and the first groove; The spiral conveyor is provided with a limiting shaft at one end, and an arc-shaped block is provided on the outer wall of the limiting shaft.

[0009] As a preferred embodiment of the road material recycling paving device of the present invention, the outer wall of the first sleeve is provided with a notch for the second slider to rotate, and the inner wall of the notch is provided with a limiting platform.

[0010] In a preferred embodiment of the road recycled paving device of the present invention, a first ring is fixedly connected to the outer wall of the first sleeve, a second support rod is provided on the outer wall of the first ring, and a sliding groove is provided on the inner wall of the supporting pipe for the second support rod to slide.

[0011] In a preferred embodiment of the road material recycling paving device of the present invention, a second ring is sleeved on the outer wall of the first rotating shaft, a third support rod is provided on the outer wall of the second ring, and the third support rod is fixedly connected to the inner wall of the supporting pipe.

[0012] In a preferred embodiment of the road material recycling paving device of the present invention, the crushing component includes a crushing box and a crushing shaft inside the crushing box.

[0013] In a preferred embodiment of the road recycled paving device of the present invention, the supporting pipe is inclined and the lower end of the supporting pipe is connected to the collection component. The number of bidirectional thread grooves is less than the number of spiral grooves.

[0014] In a preferred embodiment of the road material recycling paving device of the present invention, the mixing component is externally connected to a hot air box.

[0015] The beneficial effects of this invention are as follows: Road surface materials are crushed by a crushing component and then fed into a conveying cylinder. The conveying cylinder rotates in one direction to complete aggregate screening. A hot air box, combined with fan blades, achieves hot air drying and dust removal. A reverse-rotating spiral conveyor sends qualified aggregates into a mixing component. After adding binder and mixing for regeneration, the aggregates are then passed through a paving component to complete road repair. This invention achieves dust removal, avoiding the risk of dust burning the motor. The screening, drying, and conveying processes are linked in a closed loop, resulting in high recycling rates of old materials, environmentally friendly and efficient construction, and stable road repair quality. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 In this invention Figure 1 Enlarged schematic diagram of the structure of region A in the middle; Figure 3 This is a schematic cross-sectional view of the overall structure in this invention; Figure 4 In this invention Figure 3 Enlarged schematic diagram of the structure of region B in the middle; Figure 5 In this invention Figure 4 Enlarged schematic diagram of the structure of region C in the middle; Figure 6 In this invention Figure 4 Enlarged schematic diagram of the structure of region D in the middle; Figure 7 This is a schematic diagram of the cutting ring structure in this invention; Figure 8 This is a schematic diagram of the driven cylinder structure in this invention. Detailed Implementation

[0018] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0019] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0020] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments. Example 1

[0021] Reference Figures 1-8 This is the first embodiment of the present invention, which provides a road regeneration paving device.

[0022] Specifically, the processing component 10 includes a crushing component 20 connected internally to the processing component 10, a collecting component 30 and a mixing component 40 located at both ends of the processing component 10, and a paving component 50 located at the lower end of the processing component 10. The processing component 10 includes a support pipe 11 that communicates with the crushing component 20, a spiral conveyor 12 disposed inside the support pipe 11, a first rotating shaft 13 that is rotatably disposed inside the support pipe 11, a fan blade 131 disposed on the outer wall of the first rotating shaft 13, and a spiral groove 132 disposed on the outer wall of the first rotating shaft 13, wherein a bell mouth 133 is connected to one end of the spiral groove 132 near the spiral conveyor 12. A driven rod 14 is provided at one end of the screw conveyor 12 near the first rotating shaft 13; a bidirectional threaded groove 141 is provided on the outer wall of the driven rod 14; a first sleeve 15 is provided on the outer wall of the driven rod 14; a first slider 151 is provided on the inner wall of the first sleeve 15 and can slide along the inside of the bidirectional threaded groove 141; a second slider 152 is rotatably mounted on one end of the first sleeve 15 near the first rotating shaft 13 and can slide along the inside of the spiral groove 132; and a first elastic member 16 is provided between the second slider 152 and the first sleeve 15.

[0023] Among them, the crushing component 20 is used to crush the old road material, which then enters the processing component 10. The processing component 10 is used to process the crushed old material, thereby sorting out the aggregate, which is then transported to the mixing component 40, where new cold patch adhesive, new asphalt and other auxiliary materials are added, and then mixed evenly before entering the paving component 50. All of these adopt existing technologies. Preferably, the processing component 10 includes a support pipe 11, inside which a spiral conveyor 12 is disposed. One end of the rotating shaft of the spiral conveyor 12 extends through the mixing component 40 and is externally connected to a servo motor for driving the spiral conveyor 12 to rotate, thereby driving the aggregate inside the support pipe 11 into the mixing component 40. Simultaneously, a first rotating shaft 13 is rotatably mounted inside the end of the support pipe 11 near the collection component 30. Fan blades 131 are arrayed on the outer wall of the first rotating shaft 13. Driving the first rotating shaft 13 to rotate causes the fan blades 131 to rotate, forming an airflow that carries the dust inside the processing component 10 into the collection component 30. The collection component 30 consists of a dust filter bag and a frame. This allows dust to settle at the bottom of the filter bag, while air is expelled from the outside through the dust filter bag. Furthermore, a spiral groove, 132, is located on the outer wall of the first rotating shaft 13. Simultaneously, an opening flares outward at the end of the first rotating shaft 13 near the spiral conveyor paddle 12, with both sides of the opening overlapping to form a trumpet-shaped opening 133. Further, a driven rod 14 is fixedly connected to one end of the spiral conveyor paddle 12. The outer wall of the driven rod 14 has a bidirectional threaded groove 141, which is formed by two intersecting spiral grooves, with their ends connected. A first sleeve 15 is fitted onto the outer wall of the driven rod 14, and a first slider 15 is rotatably mounted on the inner wall of the first sleeve 15. 1. The first sleeve 15 is slidably connected along the direction of the support pipe 11. That is, when the driven rod 14 rotates, the first slider 151 rotating on the inner wall of the first sleeve 15 slides along the inside of the bidirectional threaded groove 141. When it slides to the end of one of the spiral grooves, it will enter the other spiral groove, thereby realizing the reciprocating movement of the first sleeve 15. A second slider 152 is rotatably installed at one end of the first sleeve 15 near the first rotating shaft 13. A first elastic element 16 is installed between the second slider 152 and the first sleeve 15. The first elastic element 16 is a compression spring. The advantage of this design is that when the first sleeve 15 moves towards the first rotating shaft 13, the second slider 152 connected to the outside of the first sleeve 15 slides along the inner wall of the flared opening 133. The first sleeve 15 enters the spiral groove 132, and then the second slider 152 slides along the spiral groove 132, thereby pushing the first rotating shaft 13 to rotate, which in turn drives the fan blade 131 to rotate, forming an airflow. The advantage of this design is that it does not require an external motor, avoiding dust damage to the motor and troublesome maintenance, and it relies purely on mechanical transmission. At the same time, when the first sleeve 15 moves away from the first rotating shaft 13, the second slider 152 on the outer wall of the first sleeve 15 rotates, pulling the first elastic element 16 away from the spiral groove 132, and then begins to move away from the first rotating shaft 13. The reciprocating motion continuously pushes the first rotating shaft 13 to rotate in one direction, thereby forming an airflow and carrying away the dust inside the support pipe 11.

[0024] In summary, the road surface requiring repair is broken up using a crusher. The broken pieces are then fed into the crushing assembly 20 and crushed to a particle size within acceptable limits. They then enter the support pipe 11, continuously driving the screw conveyor 12, which in turn rotates the first rotating shaft 13, diverting dust. The other end of the shaft transports the crushed aggregate particles into the mixing assembly 40, where they are remixed to form paving asphalt. The paving assembly 50 then lays the asphalt on the road surface requiring repair. It should be noted that the paving device is placed on a movable platform. Example 2

[0025] Reference Figures 1-8 This is the second embodiment of the present invention, which differs from the previous embodiment.

[0026] Specifically, the support pipe 11 is equipped with a conveying cylinder 17, which is rotatably connected to the screw conveyor 12; The conveying cylinder 17 has a first support rod 171 arrayed at one end near the driven rod 14, and a filter screen is provided between the two first support rods 171.

[0027] The conveying cylinder 17 is rotatably installed inside the supporting pipe 11. The conveying cylinder 17 is rotatably connected to the supporting pipe 11 and also rotatably connected to the screw conveyor 12. At the same time, the conveying cylinder 17 is connected to the crushing component 20. That is, the conveying cylinder 17 has an opening for the crushed aggregate from the crushing component 20 to enter the conveying cylinder 17. Meanwhile, a plurality of first support rods 171 are provided on the side of the conveying cylinder 17 near the collecting component 30. A filter screen is installed between the first support rods 171 for screening the aggregate particle size range in the second step. Smaller particles enter the collecting component 30 through the filter screen.

[0028] Furthermore, a limiting ring 172 is connected between the multiple first support rods 171.

[0029] The limiting ring 172 is sleeved on the outer wall of the driven rod 14, one end of the first support rod 173 is fixedly connected to the outer wall of the limiting ring 172, and the other end of the first support rod 173 is fixedly connected to the inner wall of the support pipe 11.

[0030] Furthermore, the inner wall of the limiting ring 172 is provided with a first groove 1721, and an abutment block 18 is rotatably provided inside the first groove 1721. The bottom of the abutment block 18 is provided with a first inclined surface 181, and a second elastic member 19 is provided between the abutment block 18 and the first groove 1721. The screw conveyor 12 has a limiting shaft 121 at one end, and an arc-shaped block 1211 is provided on the outer wall of the limiting shaft 121.

[0031] The inner wall of the limiting ring 172 is recessed to form multiple first grooves 1721, and multiple first grooves 1721 are arranged in an array. An abutment block 18 is rotatably installed inside the first groove 1721. The inner surface of the abutment block 18 can be parallel to the inner wall of the limiting ring 172. At the same time, the side of the abutment block 18 near the bottom of the first groove 1721 is beveled to form a first bevel 181. A second elastic member 19 is connected to the thinner part of the abutment block 18. One end of the second elastic member 19 is fixedly connected to the outer wall of the abutment block 18, and the other end is fixedly connected to the bottom surface of the first groove 1721. When the second elastic member 19 is not squeezed, the second elastic member 19 will lift the abutment block 18 out of the first groove 1721. At the same time, the other end of the abutment block 18 abuts against the bottom of the first groove 1721. Meanwhile, a limiting shaft 121 is connected to one end of the spiral conveyor 12 and extends into the limiting ring 172. The outer wall of the limiting shaft 121 is arrayed with arc-shaped blocks 1211. When the spiral conveyor 12 rotates, it drives the limiting shaft 121 to rotate. The arc-shaped blocks 1211 on the outer wall of the limiting shaft 121 can contact the raised end of the abutment block 18. The other end of the abutment block 18 abuts the bottom of the first groove 1721, thereby driving the conveying cylinder 17 to move together. The advantage of this design is that the conveying cylinder 17 rotates together with the spiral conveyor 12. In this way, the aggregate inside will stick to the inner wall of the conveying cylinder 17 and rotate to a certain height, and then slide down to the lowest end. This allows the dust or small aggregate inside to move continuously towards the mobile phone component 30, forming a screening function. Meanwhile, when the screw conveyor 12 rotates in the opposite direction, the arc-shaped block 1211 on the outer wall of the limiting shaft 121 will slide along the surface of the contact block 18, pressing the raised end of the contact block 18 into the first groove 1721, thereby causing the screw conveyor 12 to rotate, but the conveying cylinder 17 will not rotate, thus transporting the aggregate into the mixing assembly 40 for the next step; it should be noted that, in order to stabilize the function of the conveying cylinder 17, the conveying cylinder 17 can also be set with the same structure as the limiting shaft 121 and the limiting ring 172, thereby realizing the unidirectional rotation of the conveying cylinder 17. Example 3

[0032] Reference Figures 1-8 This is the third embodiment of the present invention, which is implemented based on the previous embodiment.

[0033] Preferably, the outer wall of the first sleeve 15 is provided with a notch 153 for the second slider 152 to rotate, and the inner wall of the notch 153 is provided with a limiting platform 1531.

[0034] In this design, a notch 153 is formed by an inward recess on the side of the first sleeve 15 near the first rotating shaft 13 to provide space for the rotation of the second slider 152. At the same time, a limiting platform 1531 is formed by protruding outward from the bottom near the inner wall of the first sleeve 15. One end of the first elastic member 16 is fixed to the bottom of the notch 153, and the other end is fixedly connected to the outer wall of the second slider 152. When the second slider 152 slides along the inner wall of the flared opening 133, the second slider 152 will abut against the surface of the limiting platform 1531, thereby limiting the rotation of the second slider 152. This allows the second slider 152 to slide stably along the inside of the spiral groove 132, thereby enabling the first rotating shaft 13 to rotate and thus forming an airflow.

[0035] Preferably, a first ring 154 is fixedly connected to the outer wall of the first sleeve 15, a second support rod 1541 is provided on the outer wall of the first ring 154, and a sliding groove is provided on the inner wall of the support pipe 11 for the second support rod 1541 to slide.

[0036] In order to ensure that the first sleeve 15 can reciprocate, a first ring 154 is fixedly connected to the outer wall of the first sleeve 15. At the same time, a second bracket 1541 is fixedly installed on the outer wall of the first ring 154, and there is a straight sliding groove on the inner wall of the support pipe 11 to provide moving space for the second bracket 1541, thereby cooperating with the bidirectional threaded groove 141 to realize the reciprocating motion of the first sleeve 15.

[0037] Preferably, a second ring 134 is sleeved on the outer wall of the first rotating shaft 13, and a third support rod 1341 is provided on the outer wall of the second ring 134, and the third support rod 1341 is fixedly connected to the inner wall of the support pipe 11.

[0038] In order to stabilize the rotation of the first rotating shaft 13, a second ring 134 is rotatably installed on the outer wall of the first rotating shaft 13. This ring can be connected by a bearing. Similarly, a third support rod 1341 is fixedly connected to the outer wall of the second ring 134. The other end of the third support rod 1341 is fixedly connected to the inner wall of the support pipe 11, thereby realizing the rotatable installation of the first rotating shaft 13.

[0039] Preferably, the crushing assembly 20 includes a crushing box 21 and a crushing shaft 22 inside the crushing box 21.

[0040] like Figure 8 As shown, the crushing component 20 is selected from the crushing box 21, which contains a crushing shaft 22 with serrated crushing.

[0041] Preferably, the support pipe 11 is inclined, and the lower end of the support pipe 11 is connected to the collection component 30; The number of turns in the bidirectional threaded groove 141 is less than that in the helical groove 133.

[0042] The support pipe 11 is set at an inclination, with the lower end connected to the collection component 30. The advantage of this design is that when the spiral conveyor 12 drives the conveyor cylinder 17 to rotate, the internal aggregate will move to the lower end due to gravity. At the same time, the conveyor cylinder 17 is constantly rotating, and the internal aggregate rotates synchronously, which will continuously allow small aggregate particles to enter the collection component 30 through the filter screen.

[0043] Meanwhile, the number of turns of the bidirectional threaded groove 141 is less than that of the spiral groove 133. The advantage of this design is that the distance the first sleeve 15 moves back and forth is fixed. When the number of turns required for the bidirectional threaded groove 141 to drive the first sleeve 15 to move a certain distance is less than that of the threaded groove 133, the number of turns of the first rotating shaft 13 can be more than that of the driven rod 14, making the first rotating shaft 13 rotate faster. The advantage of this design is that it can ensure the low-speed rotation of the spiral conveyor 12 to transport internal aggregates, and also ensure the rotational speed of the fan blade 131 to form airflow.

[0044] Furthermore, the stirring assembly 40 is externally connected to a hot air box 60.

[0045] A hot air box 60 is connected to the outside of the stirring assembly 40 to generate hot air. The heat can be generated by the oil pumping unit, which is existing technology and will not be described in detail. The advantage of this design is that it ensures the internal temperature of the stirring assembly 40. At the same time, it utilizes the characteristic of hot air rising from the inside and uses the fan blades 131 to form an airflow, so that the hot air can enter the interior of the processing assembly 10, forming hot air inside and ensuring that the interior is dry.

[0046] In summary, during use, the hot air box 60 is activated to ensure the entire equipment is dry. Then, the old aggregate is placed into the crushing assembly 20, and the screw conveyor 12 is activated. When the opening of the conveyor cylinder 17 is aligned with the crushing assembly 20, the crushed aggregate enters the conveyor cylinder 17, and some of the aggregate enters the conveyor cylinder 17. The hot air dries the entering aggregate. Then, the screw conveyor 12 is reversed to transport the separated aggregate to the mixing assembly 40. Then, other auxiliary materials are added. After mixing, the mixed material is transported to the paving assembly 50 for paving. It should be noted that both the mixing assembly 40 and the paving assembly 50 use existing technology to achieve the mixing and paving functions in the asphalt recycling process, which will not be elaborated further here.

[0047] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A road reclaimed material paving device, characterized in that: Including The processing component (10), the crushing component (20) connected to the inside of the processing component (10), the collecting component (30) and the stirring component (40) located at both ends of the processing component (10), and the paving component (50) located at the lower end of the processing component (10). The processing component (10) includes a support pipe (11) communicating with the crushing component (20), a spiral conveyor (12) disposed inside the support pipe (11), a first rotating shaft (13) rotatably disposed inside the support pipe (11), a fan blade (131) disposed on the outer wall of the first rotating shaft (13), and a spiral groove (132) disposed on the outer wall of the first rotating shaft (13), and the spiral groove (132) is connected to a bell mouth (133) at one end near the spiral conveyor (12). A driven rod (14) is provided at one end of the spiral conveyor (12) near the first rotating shaft (13), a bidirectional threaded groove (141) is provided on the outer wall of the driven rod (14), a first sleeve (15) is provided on the outer wall of the driven rod (14), a first slider (151) is provided on the inner wall of the first sleeve (15) and can slide along the inside of the bidirectional threaded groove (141), and a second slider (152) that can slide along the inside of the spiral groove (132) is rotatably installed at one end of the first sleeve (15) near the first rotating shaft (13), and a first elastic member (16) is provided between the second slider (152) and the first sleeve (15).

2. The road reclaimed material recycling paving device as described in claim 1, characterized in that: The supporting pipe (11) is equipped with a conveying cylinder (17), which is rotatably connected to the spiral conveyor (12); The conveying cylinder (17) has a first support rod (171) arranged in an array at one end near the driven rod (14), and a filter screen is provided between the two first support rods (171).

3. The road reclaimed material recycling paving device as described in claim 2, characterized in that: A limiting ring (172) is connected between multiple first support rods (171).

4. The road reclaimed material recycling paving device as described in claim 3, characterized in that: The inner wall of the limiting ring (172) is provided with a first groove (1721), and an abutment block (18) is rotatably provided inside the first groove (1721). The bottom of the abutment block (18) is provided with a first inclined surface (181), and a second elastic member (19) is provided between the abutment block (18) and the first groove (1721). The spiral conveyor (12) has a limiting shaft (121) at one end, and the outer wall of the limiting shaft (121) has an arc-shaped block (1211).

5. The road reclaimed material recycling paving device as described in claim 4, characterized in that: The outer wall of the first sleeve (15) is provided with a notch (153) for the second slider (152) to rotate, and the inner wall of the notch (153) is provided with a limiting platform (1531).

6. The road reclaimed material recycling paving device as described in claim 5, characterized in that: The outer wall of the first sleeve (15) is fixedly connected to a first ring (154), and the outer wall of the first ring (154) is provided with a second support rod (1541). The inner wall of the support pipe (11) is provided with a sliding groove for the second support rod (1541) to slide.

7. The road reclaimed material recycling paving device as described in claim 6, characterized in that: The outer wall of the first rotating shaft (13) is fitted with a second ring (134), the outer wall of the second ring (134) is provided with a third support rod (1341), and the third support rod (1341) is fixedly connected to the inner wall of the supporting pipe (11).

8. The road reclaimed material recycling paving device as described in claim 7, characterized in that: The crushing assembly (20) includes a crushing box (21) and a crushing shaft (22) inside the crushing box (21).

9. The road reclaimed material recycling paving device as described in claim 8, characterized in that: The support pipe (11) is inclined, and the lower end of the support pipe (11) is connected to the collection component (30); The number of turns of the bidirectional threaded groove (141) is less than the number of turns of the helical groove (133).

10. The road reclaimed material recycling paving device as described in claim 9, characterized in that: The stirring assembly (40) is externally connected to a hot air box (60).

Images