A sponge-type road paving structure

Abstract

The present application relates to the field of municipal construction, and more particularly to a sponge-type road paving structure comprising a drainage network disposed beneath a road surface. The drainage network comprises interconnected main pipes and branch pipes, the branch pipes being used to collect rainwater seeping from motor vehicle lanes and sidewalks and directing it into the main pipe. A first cutting ring is rotatably disposed within the main pipe, the first cutting ring being provided with first cutting teeth, the first cutting teeth being used to intercept impurities, and the main pipe being provided with base teeth, the first cutting teeth also being used to rotate and shear impurities with the base teeth. The present application has the effect of reducing the probability that filamentous impurities will affect drainage through the drainage pipe, thereby affecting the water permeability of the sponge-type road.

Description

Technical Field

[0001] The present application relates to the field of municipal construction, and in particular to a sponge-type road paving structure. Background Art

[0002] Sponge roads are a new type of urban road that has the characteristics of collection, infiltration, storage, retention, purification, use and drainage. They can effectively improve the situation of rainy floods and sunny droughts in cities, improve flood resistance, make full use of water resources, and be more environmentally friendly.

[0003] Sponge roads typically use permeable materials as the upper layer, water storage and seepage materials as the middle layer, and support and water-blocking materials as the lower layer. Drainage pipes are buried in the lower layer, channeling rainwater into the drainage network through the support and water-blocking materials. The permeable materials in the upper layer are typically permeable concrete for motorway lanes, permeable bricks and concrete for sidewalks, and planting soil for green belts. The water storage and seepage materials in the middle layer are typically rainwater storage and seepage facilities for motorway lanes and green belts. The support materials in the lower layer are typically gravel and soil for motorway lanes, graded gravel for sidewalks, and permeable concrete pebbles for green belts.

[0004] Sponge-type roads use the strong permeability of the upper layer to quickly conduct accumulated water on the ground into the underground, and quickly transfer the rainwater pressure on the ground to the drainage pipes of the underground drainage network, resulting in increased pressure in the drainage pipes, which is a great test of the drainage capacity of the drainage pipes. Small impurities on the ground can easily enter the drainage pipes through the drainage holes. Once the filamentous impurities entangle the granular impurities, the drainage pipes will be blocked, affecting the drainage effect of the drainage pipes. It is easy to cause the drainage pipes to fail to drain in time under the great rainwater pressure and backflow, thereby affecting the permeability and seepage performance of the upper layer. Summary of the Invention

[0005] In order to improve the problem of backflow caused by blockage of drainage pipes, which affects the permeability of the ground, the present application provides a sponge-type road paving structure.

[0006] This application provides a sponge-type road paving structure, which adopts the following technical solutions:

[0007] A sponge-type road paving structure includes a drainage network arranged in the lower layer of the road surface. The drainage network includes a main pipe and a branch pipe that are connected. The branch pipe is used to collect rainwater that seeps from motor vehicle lanes and sidewalks and guide it into the main pipe. A first cutting ring is rotatably arranged in the main pipe, and the first cutting ring is provided with a first cutting tooth. The first cutting tooth is used to intercept impurities. The main pipe is provided with a base tooth, and the first cutting tooth is also used to rotate and shear impurities with the base tooth.

[0008] By adopting the above technical solution, the first cutting ring is rotated to cause the first cutting teeth and the base teeth to shear the filamentous impurities flowing in the main pipe, shortening the length of the filamentous impurities and reducing the probability of the filamentous impurities entangled with other impurities and blocking the main pipe, thereby ensuring the drainage effect of the main pipe and thus ensuring the water permeability of the upper layer of the sponge-type road.

[0009] Optionally, a second cutting ring is rotatably provided on the inner wall of the main pipe, and a second cutting tooth is provided on the second cutting ring. The second cutting teeth are staggered with the first cutting teeth, and the first cutting ring and the second cutting ring sandwich the base teeth in the middle. The second cutting teeth are used to rotate with the base teeth to shear impurities.

[0010] By adopting the above technical solution, the first cutting teeth and the base teeth perform the first shearing of the impurities, and then the second cutting teeth and the base teeth perform the second shearing of the impurities, thereby further shortening the length of the filamentous impurities, reducing the probability that the impurities still have a considerable length after the first shearing, further reducing the probability that the filamentous impurities will be entangled and block the main pipe, and improving the ability to ensure the drainage effect of the main pipe.

[0011] Optionally, a clearance groove for the first cutting ring and the second cutting ring to make way is opened on the inner wall of the main pipe, a base ring is rotatably arranged on the inner wall of the clearance groove, and the base teeth are arranged on the base ring.

[0012] By adopting the above technical solution, the first cutting ring, the second cutting ring and the base ring are rotated in the clearance groove, thereby reducing the impact of the first cutting ring, the second cutting ring and the base ring on the water flow during drainage in the main pipe, thereby ensuring smooth drainage of the main pipe.

[0013] Optionally, the give way groove includes a first give way ring groove for the first cutting ring to give way, a second give way ring groove for the second cutting ring to give way, and a third give way ring groove for the base ring to give way, and the first transmission gear and the second transmission gear are rotatably arranged on the inner wall of the third give way ring groove, the base ring is provided with a plurality of first tooth grooves for engaging with the first transmission gear and a plurality of second tooth grooves for engaging with the second transmission gear, the first cutting ring is provided with a plurality of third tooth grooves for engaging with the first transmission gear, and the second cutting ring is provided with a plurality of fourth tooth grooves for engaging with the second transmission gear.

[0014] By adopting the above technical solution, the first cutting ring, the second cutting ring and the base ring are rotated together by the first transmission gear and the second transmission gear. The synchronous rotation ensures that the first cutting teeth and the second cutting teeth remain staggered during the rotation process, so that the secondary shearing of the first cutting teeth and the second cutting teeth is more closely matched, and the difference in the rotation speed of the first cutting ring and the second cutting ring, which causes the gap between adjacent first cutting teeth and the gap between adjacent second cutting teeth to be aligned, is reduced. At this time, the probability of the filamentous impurities sheared by the first cutting teeth directly leaking through the gap between the second cutting teeth and unable to be sheared for the second time is reduced, making the secondary shearing process smoother.

[0015] Optionally, a plurality of first rotating shafts for rotating in contact with the first cutting ring are rotatably provided on the inner wall of the first yield ring groove, and a shaft sleeve for rotating in contact with the first cutting ring is sleeved on the first rotating shaft; a plurality of second rotating shafts for rotating in contact with the second cutting ring are rotatably provided on the inner wall of the second yield ring groove, and the shaft sleeve is also sleeved on the second rotating shaft; a plurality of third rotating shafts for rotating in contact with the base ring are rotatably provided on the inner wall of the third yield ring groove, and the shaft sleeve is also sleeved on the third rotating shaft.

[0016] By adopting the above technical solution, the sliding friction between the first cutting ring and the inner wall of the first yield ring groove is converted into rotational friction through the first rotating shaft, which greatly reduces the friction between the first cutting ring and the inner wall of the first yield ring groove, so that the friction force that needs to be overcome when the first cutting ring rotates is greatly reduced, making the rotation of the first cutting ring smoother; the friction between the second cutting ring and the inner wall of the second yield ring groove is reduced by the second rotating shaft, and the friction between the base ring and the inner wall of the third yield ring groove is reduced by the third rotating shaft, so that the second cutting ring and the base ring rotate more smoothly.

[0017] Optionally, a first limiting ring is provided on the inner wall of the first yield ring groove, the inner wall of the first yield ring groove and the first limiting ring clamp the first cutting ring in the middle, and the first rotating shaft is also rotatably provided on the inner wall of the first limiting ring; a second limiting ring is provided on the inner wall of the second yield ring groove, the inner wall of the second yield ring groove and the second limiting ring clamp the second cutting ring in the middle, and the second rotating shaft is also rotatably provided on the inner wall of the second limiting ring.

[0018] By adopting the above technical solution, the first cutting ring is limited by the first limiting ring, and the second cutting ring is limited by the second limiting ring, which reduces the probability of the first cutting ring and the second cutting ring being displaced and fitted with the base ring during rotation, resulting in a large amount of friction between the first cutting ring, the second cutting ring and the base ring, thereby protecting the first cutting ring, the second cutting ring and the base ring.

[0019] Optionally, a tilted rotating bevel is provided on the side wall of the first cutting tooth facing the main water inlet, and the rotating bevel is used to guide the first cutting tooth and the first cutting ring to rotate under the impact of water flow.

[0020] By adopting the above technical solution, the water flow impacts the rotating inclined plane, and the inclined rotating inclined plane is used to convert the impact force of the water flow into the rotational force of the first cutting ring, thereby realizing rotation without a drive source, reducing the probability of electrical failure, and achieving the purpose of green environmental protection.

[0021] Optionally, an auxiliary groove is provided on the main pipe, and a fine mesh for intercepting filamentous impurities is also provided on the main pipe, the fine mesh covers the auxiliary groove therein, the side wall of the fine mesh is in contact with the second cutting tooth, a paddle is rotatably provided in the auxiliary groove, a plurality of first reduction tooth grooves are provided on the paddle rotating shaft, a reduction gear engaged with the first reduction tooth groove is also rotatably provided in the auxiliary groove, and a plurality of second reduction tooth grooves for engaging with the second transmission gear are provided on the reduction gear rotating shaft.

[0022] By adopting the above technical solution, when the water flow is small and the impact force of the water flow is difficult to drive the first cutting ring through the rotating inclined surface, the blade rotating shaft engages with the teeth of the second transmission gear through the reduction gear, thereby realizing a two-stage deceleration. At the same time, the torque of the blade is increased, making the rotation of the blade easier, so that the water flow drives the blade to rotate, and the blade drives the second cutting ring to rotate after the two-stage deceleration, so that the second cutting ring can still maintain a low rotation speed when the water flow is small, and reduces the probability that the rotational force caused by the impact of the water flow is less than the initial force that the first cutting ring needs to overcome to start rotating, which makes it difficult for the first cutting ring to rotate.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. Reduce the probability of filamentous impurities entangled with other impurities and blocked the main pipe, thus ensuring the drainage effect of the main pipe, thereby ensuring the permeability of the upper layer of the sponge road.

[0025] 2. Realize rotation without driving source, reduce the probability of electrical failure, and achieve the purpose of green environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of a sponge-type road paving structure in an embodiment of the present application.

[0027] Figure 2 It is along Figure 1 Schematic diagram of the cross section along line AA.

[0028] Figure 3 yes Figure 2 Schematic diagram of the enlarged structure at point B in the middle.

[0029] Figure 4 It is a schematic diagram of the exploded structure of the first switching ring, the second cutting ring and the base ring.

[0030] Figure 5 yes Figure 4 Schematic diagram of the enlarged structure at point C in the middle.

[0031] Explanation of the accompanying symbols: 1. Drainage network; 11. Main pipe; 12. Branch pipe; 2. First cutting ring; 21. First cutting tooth; 22. Third tooth groove; 23. First rotating shaft; 24. Bushing; 25. First limiting ring; 26. Rotating inclined plane; 3. Base tooth; 31. Base ring; 32. First tooth groove; 33. Second tooth groove; 34. Third rotating shaft; 35. Transmission ring; 4. Second cutting ring; 41. Second cutting tooth; 42. Fourth tooth groove; 43. Second rotating shaft; 44. Second limiting ring; 5. Give way groove; 51. First give way ring groove; 52. Second give way ring groove; 53. Third give way ring groove; 54. First transmission gear; 55. Second transmission gear; 6. Auxiliary groove; 61. Fine mesh; 62. Paddle; 63. First reduction tooth groove; 64. Reduction gear; 65. Second reduction tooth groove. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-5 This application is described in further detail.

[0033] The embodiment of the present application discloses a sponge-type road paving structure. Figure 1 The sponge-type road paving structure includes a drainage network 1 installed in the lower layer of the road surface. The drainage network 1 includes a connected main pipe 11 and a branch pipe 12. The branch pipe 12 is used to collect rainwater seeping from the motor vehicle lane and the sidewalk and guide it into the main pipe 11. The branch pipe 12 is connected to the rainwater well of the permeable concrete or rainwater storage and infiltration facility.

[0034] Reference Figure 2 and Figure 3 and Figure 4 A first cutting ring 2 rotates within the main pipe 11. A plurality of first cutting teeth 21 are fixedly connected to the inner sidewall of the first cutting ring 2. These first cutting teeth 21 are evenly distributed along the annular circumference on the inner wall of the first cutting ring 2 and are used to intercept filamentary impurities. A base ring 31 also rotates within the main pipe 11. A plurality of base teeth 3 are fixedly connected to the inner wall of the base ring 31 and are evenly distributed along the annular circumference on the inner wall of the base ring 31. The first cutting ring 2 and the base ring 31 rotate in opposite directions. The first cutting teeth 21 are also used to rotate and shear impurities together with the base teeth 3.

[0035] Reference Figure 3The main pipe 11 has a circumferentially circumferentially formed inner wall with a clearance groove 5. The clearance groove 5 includes a first clearance groove 51, a second clearance groove 52, and a third clearance groove 53. The depth of the third clearance groove 53 is greater than that of the first clearance groove 51. The depths of the first and second clearance grooves 51 and 52 are equal. The third clearance groove 53 is located between the first and second clearance grooves 51 and 52, and the first clearance groove 51 is located near the water inlet of the main pipe 11.

[0036] Reference Figure 3 A first retaining ring 25 is fixedly connected to the inner wall of the first clearance groove 51 near the third clearance groove 53. The first retaining ring 25 is fixedly circumferentially around the first clearance groove 51. The inner wall of the first clearance groove 51 facing the third clearance groove 53 and the first retaining ring 25 sandwich the first cutting ring 2. The thickness of the first cutting ring 2 is equal to the opening depth of the first clearance groove 51. A plurality of first rotating shafts 23 are rotatably embedded in the side wall of the first clearance groove 51 facing its own opening. The plurality of first rotating shafts 23 are evenly distributed circumferentially around the inner wall of the first clearance groove 51. The plurality of first rotating shafts 23 are also rotatably embedded in the inner wall of the first retaining ring 25 for contact with the first cutting ring 2. The plurality of first rotating shafts 23 on the first retaining ring 25 are evenly distributed along the extension direction of the first retaining ring 25. A shaft sleeve 24 is sleeved on the first rotating shaft 23. The first rotating shaft 23 rotates along the rotation direction of the side wall of the first cutting ring 2 with which it contacts. In this embodiment, the shaft sleeve 24 is made of corrosion-resistant and friction-resistant rubber, and the first rotating shaft 23 rotating on the first limiting ring 25 can be made of a ball.

[0037] Reference Figure 3 A second limiting ring 44 is fixedly connected to the inner wall of the second give way ring groove 52 near the third give way ring groove 53. The second limiting ring 44 is fixed circumferentially. The second cutting ring 4 rotates in the second give way ring groove 52. The second give way ring groove 52 faces the inner wall of the third give way ring groove 53 and the second limiting ring 44, sandwiching the second cutting ring 4 in the middle, and the thickness of the second cutting ring 4 is equal to the opening depth of the second give way ring groove 52. A plurality of second rotating shafts 43 are rotatably embedded in the sidewall of the second clearance ring groove 52 facing the opening thereof. These second rotating shafts 43 are evenly distributed circumferentially along the inner wall of the second clearance ring groove 52. Furthermore, these second rotating shafts 43 are rotatably embedded in the inner wall of the second limiting ring 44, which contacts the second cutting ring 4. The second rotating shafts 43 on the second limiting ring 44 are evenly distributed along the extension direction of the second limiting ring 44. The shaft sleeve 24 is also sleeved on the second rotating shafts 43. The second rotating shafts 43 rotate in the direction of rotation of the sidewall of the second cutting ring 4 with which they contact. In this embodiment, the second rotating shafts 43 rotating on the second limiting ring 44 can be ball bearings.

[0038] Reference Figure 3The base ring 31 rotates in the third give way ring groove 53, and the thickness of the base ring 31 is equal to the opening depth of the third give way ring groove 53. A plurality of third rotating shafts 34 are rotatably embedded on the bottom wall of the third give way ring groove 53 facing its own opening surface. A plurality of third rotating shafts 34 are evenly opened around the circumferential direction of the bottom wall of the third give way ring groove 53, and the third rotating shafts 34 are also rotatably embedded on the inner wall of the third give way ring groove 53 facing each other. The shaft sleeve 24 is sleeved on the third rotating shaft 34. A plurality of third rotating shafts 34 located on the inner wall of the third give way ring groove 53 facing each other are evenly distributed around the circumference of the third give way ring groove 53. In this embodiment, the third rotating shafts 34 located on the inner wall of the third give way ring groove 53 facing each other can be ball bearings.

[0039] Reference Figure 3 and Figure 4 The first cutting teeth 21 protrude from the inner wall of the first cutting ring 2 toward the base ring 31. The first cutting teeth 21 span the thickness of the first limiting ring 25 and abut against the base teeth 3. A plurality of second cutting teeth 41 are fixedly connected to the inner wall of the second cutting ring 4. The second cutting teeth 41 are staggered with the first cutting teeth 21 and protrude from the inner wall of the second cutting ring 4 toward the base ring 31. The second cutting teeth 41 span the thickness of the second limiting ring 44 and abut against the base teeth 3.

[0040] Reference Figure 3 and Figure 4 A first transmission gear 54 and a second transmission gear 55 are rotatably embedded in the inner walls of the third yield ring groove 53 facing each other. Two transmission rings 35 are fixedly connected to the opposite side walls of the base ring 31. The transmission rings 35 extend around the circumference of the base ring 31 and correspond to the first transmission gear 54 and the second transmission gear 55, respectively. The transmission ring 35 corresponding to the first transmission gear 54 has a plurality of first tooth grooves 32 on the side wall facing the opening of the third yield ring groove 53. The plurality of first tooth grooves 32 are evenly distributed along the extension direction of the transmission ring 35 and are designed to mesh with the first transmission gear 54. The transmission ring 35 corresponding to the second transmission gear 55 has a plurality of second tooth grooves 33 on the side wall facing the opening of the third yield ring groove 53. The plurality of second tooth grooves 33 are evenly distributed along the extension direction of the transmission ring 35 and are designed to mesh with the second transmission gear 55.

[0041] Reference Figure 3 and Figure 4 The outer sidewall of the first cutting ring 2 is provided with a plurality of third tooth grooves 22, which are evenly distributed along the circumference of the outer sidewall of the first cutting ring 2 and are used to mesh with the first transmission gear 54. The outer sidewall of the second cutting ring 4 is provided with a plurality of fourth tooth grooves 42, which are evenly distributed along the circumference of the outer sidewall of the second cutting ring 4 and are used to mesh with the second transmission gear 55.

[0042] Reference Figure 3 and Figure 4 A tilted rotating bevel 26 is provided on the side wall of the first incisor 21 facing the water inlet of the main pipe 11. The direction in which the first incisor 21 is away from the inner wall of the first cutting ring 2 is the extension length direction. The rotating bevel 26 is tilted in a direction in which the side farther away from the length direction of the first incisor 21 is closer to the base tooth 3, and the inclination direction of the rotating bevels 26 on several first incisors 21 is the same. The rotating bevel 26 is used to guide the first incisor 21 and the first cutting ring 2 to rotate under the impact of water flow.

[0043] Reference Figure 3 and Figure 5 An auxiliary groove 6 is defined on the inner wall of the main pipe 11. A fine mesh 61, designed to intercept filamentary impurities, is also fixedly attached to the main pipe 11. The fine mesh 61 covers the auxiliary groove 6, with the sidewall of the fine mesh 61 abutting against the sidewall of the second incisor 41 facing away from the base tooth 3. A paddle 62 rotates within the auxiliary groove 6. A plurality of first reduction tooth grooves 63 are defined on the rotation axis of the paddle 62. These first reduction tooth grooves 63 are evenly distributed around the circumference of the rotation axis of the paddle 62. The rotation axis of the paddle 62 extends toward the second transmission gear 55, and the length of the paddle 62 rotation axis is parallel to the length of the rotation axis of the second transmission gear 55. A reduction gear 64 that engages with the first reduction tooth groove 63 is also rotatably embedded in the inner wall of the auxiliary groove 6. A plurality of second reduction tooth grooves 65 for engaging with the second transmission gear 55 are opened on the rotating shaft of the reduction gear 64. The plurality of second reduction tooth grooves 65 are evenly distributed around the circumference of the rotating shaft of the reduction gear 64, and the length direction of the rotating shaft of the reduction gear 64 is parallel to the length direction of the rotating shaft of the second transmission gear 55.

[0044] The implementation principle of a sponge-type road paving structure in an embodiment of the present application is as follows: when filamentous impurities enter the main pipe 11 from the branch pipe 12, the filamentous impurities will flow through the first cutting ring 2 along the water flow, and the first cutting ring 2 will be driven by the water flow to rotate by rotating the inclined surface 26. The rotation of the first cutting ring 2 drives the first transmission gear 54 to rotate, and the first transmission gear 54 drives the base ring 31 to rotate, and the base ring 31 drives the second cutting ring 4 to rotate through the second transmission gear 55. At this time, the filamentous impurities are relatively long, so the filamentous impurities will be hung on the first cutting teeth 21, and the ends of the filamentous impurities will extend to between the base teeth 3 with the water flow, and the first cutting teeth 21 and the base teeth 3 rotate to shear off the part of the filamentous impurities extending between the base teeth 3. At this time, the filamentous impurities hung on the first cutting teeth 21 are too short and will slide off the first cutting teeth 21 under the impact of the water flow, and the sheared filamentous impurities will be intercepted and hung by the second cutting teeth 41, and then sheared again by the second cutting teeth 41 and the base teeth 3.

[0045] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A sponge-type road paving structure, characterized by: The invention comprises a drainage pipe network (1) arranged in the lower layer of a road surface, wherein the drainage pipe network (1) comprises a main pipe (11) and a branch pipe (12) connected to each other, wherein the branch pipe (12) is used to collect rainwater seeping from a motor vehicle lane and a sidewalk and guide it into the main pipe (11), wherein a first cutting ring (2) is rotatably arranged in the main pipe (11), wherein the first cutting ring (2) is provided with a first cutting tooth (21), wherein the first cutting tooth (21) is used to intercept filamentous impurities, wherein the main pipe (11) is provided with a base tooth (3), wherein the first cutting tooth (21) is further used to rotate with the base tooth (3) to shear the filamentous impurities; A second cutting ring (4) is rotatably provided on the inner wall of the main pipe (11), and a second cutting tooth (41) is provided on the second cutting ring (4). The second cutting tooth (41) and the first cutting tooth (21) are arranged in an interlaced manner. The first cutting ring (2) and the second cutting ring (4) sandwich the base tooth (3) therebetween, and the second cutting tooth (41) is used to rotate with the base tooth (3) to shear the filamentous impurities. A clearance groove (5) for allowing the first cutting ring (2) and the second cutting ring (4) to make way is provided on the inner wall of the main pipe (11); a base ring (31) is rotatably provided on the inner wall of the clearance groove (5); and the base teeth (3) are provided on the base ring (31); An inclined rotating bevel (26) is provided on the side wall of the first cutting tooth (21) facing the water inlet of the main pipe (11). The rotating bevel (26) is used to guide the first cutting tooth (21) and the first cutting ring (2) to rotate under the impact of water flow.

2. The sponge-type road paving structure according to claim 1, characterized in that: The clearance groove (5) comprises a first clearance ring groove (51) for the first cutting ring (2) to make way, a second clearance ring groove (52) for the second cutting ring (4) to make way, and a third clearance ring groove (53) for the base ring (31) to make way. A first transmission gear (54) and a second transmission gear (55) are rotatably arranged on the inner wall of the third clearance ring groove (53). The base ring (31) is provided with a plurality of first tooth grooves (32) for meshing with the first transmission gear (54) and a plurality of second tooth grooves (33) for meshing with the second transmission gear (55). The first cutting ring (2) is provided with a plurality of third tooth grooves (22) for meshing with the first transmission gear (54), and the second cutting ring (4) is provided with a plurality of fourth tooth grooves (42) for meshing with the second transmission gear (55).

3. The sponge-type road paving structure according to claim 2, characterized in that: A plurality of first rotating shafts (23) for rotating in contact with the first cutting ring (2) are rotatably provided on the inner wall of the first yielding ring groove (51), and a shaft sleeve (24) for rotating in contact with the first cutting ring (2) is sleeved on the first rotating shaft (23); a plurality of second rotating shafts (43) for rotating in contact with the second cutting ring (4) are rotatably provided on the inner wall of the second yielding ring groove (52), and the shaft sleeve (24) is also sleeved on the second rotating shaft (43); a plurality of third rotating shafts (34) for rotating in contact with the base ring (31) are rotatably provided on the inner wall of the third yielding ring groove (53), and the shaft sleeve (24) is also sleeved on the third rotating shaft (34).

4. The sponge-type road paving structure according to claim 3, characterized in that: A first limiting ring (25) is provided on the inner wall of the first yielding ring groove (51), and the inner wall of the first yielding ring groove (51) and the first limiting ring (25) sandwich the first cutting ring (2) in the middle. The first rotating shaft (23) is also rotatably provided on the inner wall of the first limiting ring (25); a second limiting ring (44) is provided on the inner wall of the second yielding ring groove (52), and the inner wall of the second yielding ring groove (52) and the second limiting ring (44) sandwich the second cutting ring (4) in the middle. The second rotating shaft (43) is also rotatably provided on the inner wall of the second limiting ring (44).

5. The sponge-type road paving structure according to claim 2, characterized in that: An auxiliary groove (6) is provided on the main pipe (11), and a fine mesh (61) for intercepting filamentous impurities is also provided on the main pipe (11). The fine mesh (61) covers the auxiliary groove (6) therein, and the side wall of the fine mesh (61) is in contact with the second cutting tooth (41). A paddle (62) is rotatably provided in the auxiliary groove (6), and a plurality of first reduction tooth grooves (63) are provided on the rotation axis of the paddle (62). A reduction gear (64) meshing with the first reduction tooth groove (63) is also rotatably provided in the auxiliary groove (6), and a plurality of second reduction tooth grooves (65) for meshing with the second transmission gear (55) are provided on the rotation axis of the reduction gear (64).

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