A kind of rubber asphalt anti-cracking layer rapid cross-linking construction equipment and method

Abstract

The invention discloses a rapid cross-linking construction device and method for a rubber asphalt anti-cracking layer, and relates to the technical field of road construction. The rapid cross-linking construction device for the rubber asphalt anti-cracking layer comprises a carrier vehicle, a rubber asphalt mixing tank and a matrix asphalt mixing tank arranged on the carrier vehicle, including a nozzle assembly, wherein the nozzle assembly is arranged at the rear of the carrier vehicle, and the nozzle assembly comprises a rubber asphalt nozzle and a matrix asphalt nozzle, wherein the rubber asphalt nozzle and the matrix asphalt nozzle are close in position, and the nozzles of the rubber asphalt nozzle and the matrix asphalt nozzle are arranged non-parallel, and the rapid cross-linking construction device and method for the rubber asphalt anti-cracking layer can realize cross-linking before the rubber asphalt and the asphalt reach the ground, which can improve the uniformity of cross-linking on the one hand, and avoid the incomplete cross-linking caused by the spraying thickness in the prior art on the other hand, and can also shorten the cross-linking time on the ground, so that the cross-linking can be completed as much as possible before the temperature drops.

Description

Technical Field

[0001] The invention relates to the technical field of road construction, in particular to a rapid cross-linking construction device and method for a rubber asphalt anti-cracking layer. Background Art

[0002] Due to its excellent bonding and anti-reflective cracking performance, the rubber asphalt stress absorption layer is widely used in the reconstruction of old pavement, bridge deck waterproofing and new pavement intermediate layer. The rubber asphalt stress absorption layer can effectively reduce the generation and expansion of reflective cracks in the semi-rigid base and extend the service life of the pavement. At the same time, since it saves the mixing and transportation of the mixture, the construction is simple, thus greatly alleviating the energy consumption and pollution problems.

[0003] Adding sulfur and accelerators to rubber asphalt can improve its adhesion, impact resistance and fatigue resistance. When the dosage is low, sulfur can only stabilize the incompatible suspension system of rubber asphalt, and has no significant improvement on its mechanical properties; when the dosage is high, although it can achieve the reconstruction of the three-dimensional network of rubber in asphalt and enhance durability, it will also cause problems such as high viscosity, difficult construction and high cost.

[0004] The vulcanization speed of rubber is related to the vulcanization system and temperature. By adjusting the content of crosslinking aids, vulcanizers, and accelerators in rubber asphalt and increasing the crosslinking temperature, rapid vulcanization and crosslinking of rubber in asphalt can be achieved. At 180°C, rubber can be rapidly crosslinked within 1 minute. This provides an opportunity for in-situ crosslinking of rubber asphalt.

[0005] To this end, the patent with publication number CN116219839A proposes an on-site rapid cross-linking construction equipment and method for a rubber asphalt stress absorption layer, which adds a certain proportion of sulfur and an accelerator to the base asphalt, and after being sprayed through a base asphalt nozzle, it is evenly mixed with the rubber asphalt sprayed through the rubber asphalt nozzle, and achieves on-site rapid cross-linking under high temperature conditions to form a three-dimensional network structure to improve the mechanical properties and durability of the rubber asphalt stress absorption layer. It has high production efficiency, low cost, and strong practicality. In particular, it has the following advantages: it can achieve on-site rapid cross-linking of rubber asphalt to solve the problem of high viscosity and difficult construction after adding sulfur to wet rubber asphalt, thereby enhancing the durability of the road surface.

[0006] However, it still has certain defects in actual use. For example, the rubber asphalt and matrix asphalt sprayed out by the nozzle have a certain thickness, and the two materials are not uniform enough during on-site cross-linking, resulting in incomplete cross-linking. In addition, the temperature of the rubber asphalt and matrix asphalt drops rapidly after spraying, making it difficult to maintain the temperature required for cross-linking. Summary of the invention

[0007] In view of the deficiencies in the prior art, the present invention provides a rubber asphalt anti-cracking layer rapid cross-linking construction equipment and method, which solves the problem in the prior art that the rubber asphalt and matrix asphalt sprayed out by the nozzle both have a certain thickness, the two materials are not uniform enough during on-site cross-linking, resulting in incomplete cross-linking, and the temperature of the rubber asphalt and matrix asphalt drops rapidly after spraying, making it difficult to maintain the temperature required for cross-linking.

[0008] To achieve the above objectives, in the first aspect, the present invention provides a rubber asphalt anti-cracking layer rapid cross-linking construction equipment, including a carrier vehicle, a rubber asphalt mixing tank and a matrix asphalt mixing tank arranged on the carrier vehicle, including a nozzle assembly, wherein the nozzle assembly is arranged at the rear of the carrier vehicle, and the nozzle assembly includes a rubber asphalt nozzle and a matrix asphalt nozzle, wherein the rubber asphalt nozzle and the matrix asphalt nozzle are positioned close to each other, and the nozzles of the rubber asphalt nozzle and the matrix asphalt nozzle are arranged non-parallel, so that the materials in the rubber asphalt nozzle and the matrix asphalt nozzle can contact each other and then reach the ground synchronously, so as to improve the cross-linking uniformity of the rubber asphalt and the matrix asphalt; sulfur and accelerator are added to the matrix asphalt in the matrix asphalt mixing tank.

[0009] Furthermore, the nozzle assembly includes a mixing nozzle, which includes an inner tube serving as a rubber asphalt nozzle, an outer tube serving as a matrix asphalt nozzle, and an upper cover for sealing the inner tube and the outer tube; the outer tube is arranged at the periphery of the inner tube, the lower end of the inner tube protrudes from the lower end of the outer tube, and a gap is formed between the inner tube and the outer tube, and the gap is used to accommodate the matrix asphalt to be discharged, and a through hole is radially opened on the inner tube at a position close to the lower end of the outer tube, and the through hole is used to deliver the matrix asphalt in the gap into the inner tube; a mixing chamber is provided at the lower end of the inner tube; the upper cover includes a cover body, and the cover body is rotatably connected to the outer tube by a thread.

[0010] Furthermore, the inner tube includes a first inner tube body, the nozzle is located at the lower end of the first inner tube body, and the outer edge of the nozzle is provided with a duckbill-shaped opening along the width direction of the vehicle body; a narrow diameter portion is provided in the first inner tube body at a position opposite to the through hole, so that the rubber asphalt can absorb the matrix asphalt from the through hole when passing through the narrow diameter portion at high speed.

[0011] Furthermore, the mixing nozzle also includes a mixing piece, which includes: a barrel, the barrel is inserted into the narrow diameter portion, and the area of ​​the barrel opposite to the through hole has a hollow area; a conical barrel, the upper end of the narrow diameter portion is set as a conical cavity, the conical barrel is arranged at the upper end of the barrel, and the conical cavity limits the radial and axial movement of the conical barrel; a turbine, the turbine is fixedly arranged at the upper end of the conical barrel, and a spring telescopic rod is rotatably installed on the upper end of the turbine through a bearing, the upper end of the spring telescopic rod is fixedly provided with a friction disk, and a pressure block adapted to the friction disk is fixedly provided in the cover body, so that the spring telescopic rod exerts downward pressure on the turbine; a stirring rod, the lower end of the stirring rod is located at the lower end of the barrel, the upper end of the stirring rod is located in the barrel and extends to the position of the hollow area, the upper end of the stirring rod is a flat structure, and the stirring rod is rotatably connected to the lower end of the barrel through a pin shaft.

[0012] Furthermore, the nozzle assembly includes a pair of spray nozzles, which include: two groups of second nozzles, the two groups of second nozzles serving as rubber asphalt nozzles and matrix asphalt nozzles respectively, each group of second nozzles including a second tube body and an inclined nozzle arranged at the lower end of the second tube body, the two second tube bodies are arranged one after the other along the length direction of the vehicle body, and the two inclined nozzles are inclined in a V shape relative to each other, the nozzle is arranged at the lower ends of the two inclined nozzles, and the outer edge of the nozzle is duckbill-shaped along the width direction of the vehicle body; a high-pressure air nozzle, the high-pressure air nozzle is located in the middle between the two second tube bodies, the lower end of the high-pressure air nozzle has an air port, the air port is in the shape of a long slit or porous, and a high-pressure air pump is connected to the high-pressure air nozzle.

[0013] Furthermore, the angle between the two inclined nozzles is 60°-90°.

[0014] Furthermore, the nozzle assembly includes a third nozzle, which includes a third inner tube serving as a rubber asphalt nozzle and a third outer tube serving as a matrix asphalt nozzle; the third outer tube includes a circular tube area sleeved on the periphery of the third inner tube and side mouths arranged on both sides of the lower end of the circular tube area, the lower ends of the side mouths are inclined toward the lower end of the third inner tube, and the lower ends of the side mouths and the lower ends of the third inner tube both have nozzles, and the outer edge of the nozzle at the lower end of the third inner tube is duckbill-shaped along the width direction of the vehicle body.

[0015] Furthermore, it also includes a pipe bracket fixedly mounted at the rear of the carrier vehicle, wherein a nozzle 1 and a nozzle 2 are arranged side by side along the length direction in the pipe bracket; one end of the nozzle 1 is connected to the rubber asphalt mixing tank through a first material delivery pipe and a pump group 1, and the rubber asphalt nozzles are fixed on this nozzle 1 at equal intervals; one end of the nozzle 2 is connected to the base asphalt mixing tank through a second material delivery pipe and a pump group 2, and the base asphalt nozzles are fixed on this nozzle 2 at equal intervals.

[0016] Furthermore, it also includes a crushed stone bucket, which is installed above the rear of the carrier vehicle, and a crushed stone feeding assembly is provided on one side of the crushed stone bucket, and the crushed stone feeding assembly is located on the side of the pipeline support away from the front of the vehicle.

[0017] On the other hand, an embodiment of the present invention further provides a method for rapid cross-linking construction of a rubber asphalt anti-cracking layer, which is applied to the aforementioned rapid cross-linking construction equipment of a rubber asphalt anti-cracking layer, and is characterized in that it comprises the following steps:

[0018] S1 injects rubber asphalt into the rubber asphalt mixing tank and maintains the temperature in the rubber asphalt mixing tank at 160-190°C, injects base asphalt with a certain proportion of sulfur and accelerator into the base asphalt mixing tank and maintains the temperature in the base asphalt mixing tank at 120-140°C, and uses the rubber asphalt mixing tank and the stirring device in the base asphalt mixing tank to stir the rubber asphalt and the base asphalt, and feeds sand and gravel into the gravel bucket;

[0019] S2 starts pump group 1, pump group 2 and gravel feeding assembly while the carrier vehicle is driving, so that the rubber asphalt and matrix asphalt are sprayed synchronously. The rubber asphalt and matrix asphalt are sprayed from the rubber asphalt nozzle and the matrix asphalt nozzle respectively, and contact and cross-link before reaching the ground, thereby increasing the contact area between the rubber asphalt and the matrix asphalt during cross-linking. Then the gravel feeding assembly is sprinkled out and covers the cross-linked material.

[0020] The present invention has the following beneficial effects:

[0021] The rubber asphalt anti-cracking layer rapid cross-linking construction equipment and method can realize cross-linking before the rubber asphalt and asphalt reach the ground. On the one hand, it can improve the uniformity of cross-linking, and on the other hand, it can avoid the situation of incomplete cross-linking caused by spraying thickness in the prior art. Thirdly, it can also shorten the time of cross-linking on the ground and complete the cross-linking before the temperature drops as much as possible.

[0022] 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

[0023] Figure 1 It is an overall diagram of the present invention;

[0024] Figure 2 This is an appearance diagram of a mixing nozzle in Embodiment 1 of the present invention;

[0025] Figure 3 For the present invention Figure 2 The schematic diagram of the outer tube cut open;

[0026] Figure 4 For the present invention Figure 3 A schematic diagram of the inner tube being cut open;

[0027] Figure 5 For the present invention Figure 2 Another perspective of the picture;

[0028] Figure 6 For the present invention Figure 1 Another perspective of the picture;

[0029] Figure 7 For the present invention Figure 4 Exploded diagram of

[0030] Figure 8 This is a diagram showing the coordination of the mixing piece and the inner tube in the first embodiment of the present invention;

[0031] Fig. 9 The inner tube in the first embodiment of the present invention is cut open;

[0032] Fig.10 is a cross-sectional view of the mixing piece in the first embodiment of the present invention;

[0033] Fig.11 Schematic diagram of the structure of the mixing piece in the first embodiment of the present invention;

[0034] Fig.12 Schematic diagram of the structure of the stirring rod in the first embodiment of the present invention;

[0035] Fig.13 This is a first viewing angle diagram of the spray nozzle in the second embodiment of the present invention;

[0036] Fig.14 A second viewing angle diagram of the spray nozzle in the second embodiment of the present invention;

[0037] Fig.15 In the second embodiment of the present invention Fig.14 A magnified image of area A;

[0038] Fig.16 It is a schematic diagram of a multi-porous gas outlet in the second embodiment of the present invention;

[0039] Fig.17 It is an orthographic projection diagram of the spray nozzle in the second embodiment of the present invention;

[0040] Fig.18 This is a schematic diagram of a cutaway circular tube region in Embodiment 3 of the present invention;

[0041] Fig.19 This is a bottom view of the third embodiment of the present invention.

[0042] In the figure, 1, carrier vehicle; 2, rubber asphalt mixing tank; 3, matrix asphalt mixing tank; 4, gravel bucket; 5, pipeline support; 6, mixing nozzle; 61, upper cover; 611, cover body; 613, pressing block; 62, inner tube; 621, first inner tube body; 622, through hole; 623, narrow diameter part; 624, mixing cavity; 625, conical cavity; 63, outer tube; 64, mixing piece; 641, spring telescopic rod; 642, turbine; 643, conical cylinder; 644, cylinder body; 6 45. hollow area; 646. pin shaft; 647. friction plate; 648. stirring rod; 7. opposite nozzle; 71. second nozzle; 711. second tube body; 713. inclined nozzle; 72. high-pressure air nozzle; 722. air nozzle joint; 8. third nozzle; 81. third inner tube; 82. third outer tube; 821. round tube area; 822. side nozzle; 9. first connector; 10. second connector; 11. first feed pipe; 12. second feed pipe; 13. gravel feeding assembly. DETAILED DESCRIPTION

[0043] 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.

[0044] 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.

[0045] According to the following Figure 1-Figure 19 The invention describes a rubber asphalt anti-cracking layer rapid cross-linking construction equipment and method.

[0046] In a first aspect, an embodiment of the present invention provides a rapid cross-linking construction equipment for a rubber asphalt anti-cracking layer.

[0047] Embodiment 1

[0048] See also Figure 1As shown, the rubber asphalt anti-cracking layer rapid cross-linking construction equipment includes a carrier vehicle 1, a rubber asphalt mixing tank 2 and a matrix asphalt mixing tank 3 arranged on the carrier vehicle 1, including a nozzle assembly, the nozzle assembly is arranged at the rear of the carrier vehicle 1, and the nozzle assembly includes a rubber asphalt nozzle and a matrix asphalt nozzle, the rubber asphalt nozzle and the matrix asphalt nozzle are close in position, and the nozzles of the rubber asphalt nozzle and the matrix asphalt nozzle are non-parallel, so that the materials in the rubber asphalt nozzle and the matrix asphalt nozzle can contact each other and then reach the ground synchronously, thereby improving the cross-linking uniformity of the rubber asphalt and the matrix asphalt.

[0049] The base asphalt in the base asphalt mixing tank 3 mentioned here is added with sulfur and accelerator. Preferably, the best ratio of sulfur and accelerator is 3% of the mass of rubber powder in the rubber asphalt and 1% of the mass of rubber powder in the rubber asphalt. This ratio can maximize the effect and stability of the modified asphalt.

[0050] Therefore, the rapid cross-linking construction equipment for the rubber asphalt anti-cracking layer provided in the embodiment of the present invention can realize cross-linking before the rubber asphalt and asphalt reach the ground. On the one hand, it can improve the uniformity of cross-linking, and on the other hand, it can avoid the incomplete cross-linking caused by the spraying thickness in the prior art. Thirdly, it can also shorten the time of cross-linking on the ground, so that the cross-linking can be completed as much as possible before the temperature drops.

[0051] The present invention also includes a pipe support 5 fixedly mounted at the rear of the carrier vehicle 1, and a nozzle 1 and a nozzle 2 are arranged side by side along the length direction in the pipe support 5; one end of the nozzle 1 is connected to the rubber asphalt mixing tank 2 through the first delivery pipe 11 and the pump group 1, and the rubber asphalt nozzles are fixed on this nozzle 1 at equal intervals through the second connector 10, so that when the pump group 1 is working, the rubber asphalt in the rubber asphalt mixing tank 2 can be transported to the nozzle 1 through the first delivery pipe 11, and distributed to each rubber asphalt nozzle by the nozzle 1.

[0052] In addition, one end of the second nozzle is connected to the matrix asphalt mixing tank 3 through the second material delivery pipe 12 and the second pump group, and the matrix asphalt nozzles are fixed on the second nozzle at equal intervals through the first connector 9. Therefore, when the second pump group is working, the matrix asphalt in the matrix asphalt mixing tank 3 can be transported to the second nozzle through the second material delivery pipe 12, and distributed to each matrix asphalt nozzle by the second nozzle.

[0053] During specific use, the rubber asphalt anti-cracking layer rapid cross-linking construction equipment provided by the embodiment of the present invention also includes a gravel bucket 4, which is installed above the rear of the carrier vehicle 1, and a gravel feeding assembly 13 is provided on one side of the gravel bucket 4, and the gravel feeding assembly 13 is located on the side of the pipe support 5 away from the front of the vehicle.

[0054] Specifically, the gravel feeding assembly 13 mentioned here includes a screw feeder and a distributor. The screw feeder conveys the gravel in the gravel bucket 4 to the distributor. The distributor can distribute the gravel along the width direction of the vehicle body, so that after the base asphalt and rubber asphalt are sprayed into the ground, the gravel can directly cover the two. At this time, the viscosity of the base asphalt and rubber is relatively large, which can better bond with the gravel.

[0055] like Figure 2-Figure 4 As shown, in this embodiment, the nozzle assembly includes a mixing nozzle 6, which includes an inner tube 62 as a rubber asphalt nozzle, an outer tube 63 as a matrix asphalt nozzle, and an upper cover 61 of the inner tube 62 and the outer tube 63. The upper cover 61 is used to seal the upper ends of the inner tube 62 and the outer tube 63, and the inner tube 62 is used to accommodate the rubber asphalt to be sprayed.

[0056] Preferably, the inner tube 62 and the outer tube 63 are an integrated stainless steel nozzle.

[0057] Furthermore, the outer tube 63 is arranged on the outer periphery of the inner tube 62, and the lower end of the inner tube 62 protrudes from the lower end of the outer tube 63, and a gap is formed between the inner tube 62 and the outer tube 63, and this gap is used to accommodate the matrix asphalt to be discharged. A through hole 622 is radially opened on the inner tube 62 at a position close to the lower end of the outer tube 63, so that the matrix asphalt in the gap can enter the inner tube 62 through the through hole 622, so that the matrix asphalt and rubber asphalt can reach the mixing chamber 624 at the lower end of the inner tube 62 at the same time, and the two are sprayed out after passing through the mixing chamber 624. Compared with on-situ cross-linking, the two can be completely contacted in the mixing chamber 624 for cross-linking. On the one hand, this method can improve the uniformity of cross-linking, and on the other hand, it can avoid the situation of incomplete cross-linking caused by spraying thickness in the prior art. Thirdly, it can also shorten the cross-linking time of the material on the ground.

[0058] It should be noted that, although the rubber asphalt and the base asphalt begin to cross-link in the mixing nozzle 6, the cross-linking is not complete, so the viscosity of the material in the mixing chamber 624 will not be too high.

[0059] In addition, the upper cover 61 includes a cover body 611 , and the cover body 611 is rotatably connected to the outer tube 63 via threads, so as to facilitate the removal of the upper cover 61 from the outer tube 63 and the inner tube 62 .

[0060] like Figure 5 Specifically, the inner tube 62 includes a first inner tube body 621, and the nozzle is located at the lower end of the first inner tube body 621, so that the outer edge of the nozzle is provided with a duckbill-shaped opening along the width direction of the vehicle body, so that the material ejected from the nozzle can be restricted by the duckbill-shaped opening and can be ejected in a triangular shape.

[0061] Preferably, a narrow diameter portion 623 is provided in the first inner tube body 621 at a position opposite to the through hole 622, so that when the rubber asphalt passes through the narrow diameter portion 623 at high speed, it can absorb the matrix asphalt from the through hole 622 to avoid the accumulation of the matrix asphalt in the gap.

[0062] Specific, combined Figure 7-Figure 11 As shown, the mixing nozzle 6 further includes a mixing element 64 , and the mixing element 64 includes a barrel 644 , a conical barrel 643 , a turbine 642 and a stirring rod 648 .

[0063] The cylinder 644 is inserted into the narrow diameter portion 623, and the area of ​​the cylinder 644 opposite to the through hole 622 has a hollow area 645, so that the cylinder 644 can prevent the matrix asphalt in the through hole 622 from entering the narrow diameter portion 623; the upper end of the narrow diameter portion 623 is set as a conical cavity 625, and the conical cylinder 643 is set at the upper end of the cylinder 644. The conical cavity 625 limits the radial and axial movement of the conical cylinder 643, so that the conical cylinder 643 and the cylinder 644 have only the freedom of circumferential movement, and the turbine 642 The spokes are fixed to the upper end of the conical cylinder 643, so that when feeding above the first inner tube 621, the turbine 642 is forced to rotate, and during the rotation, the conical cylinder 643 and the cylinder body 644 can be driven to rotate synchronously. The lower end of the stirring rod 648 is located at the lower end of the cylinder body 644, and the upper end of the stirring rod 648 is located in the cylinder body 644, so that when the conical cylinder 643 and the cylinder body 644 rotate synchronously, the stirring rod 648 can be driven to rotate, so that the stirring rod 648 can stir the base asphalt and the rubber asphalt.

[0064] It is preferred that the upper end of the stirring rod 648 is extended to the position of the hollow area 645, and the upper end of the stirring rod 648 is set to a flat structure, and the stirring rod 648 is rotatably connected to the lower end of the cylinder 644 through a pin shaft 646, so that when the base asphalt enters the narrow diameter portion 623 from the through hole 622, the flat structure can be pushed radially, causing the stirring rod 648 to tilt to a certain extent along the pin shaft 646, thereby adjusting the stirring angle and stirring direction of the stirring rod 648 and improving the mixing uniformity of the base asphalt and rubber asphalt.

[0065] In order to ensure the stability of the above-mentioned cylinder 644, a spring telescopic rod 641 is rotatably installed at the upper end of the turbine 642 through a bearing, a friction disk 647 is fixedly provided at the upper end of the spring telescopic rod 641, and a pressure block 613 adapted to the friction disk 647 is fixedly provided in the cover body 611; in this embodiment, when the cover body 611 is covered on the inner tube 62 and the outer tube 63, the pressure block 613 will press the friction disk 647, so that the spring telescopic rod 641 can generate downward pressure on the turbine 642, and the turbine 642 can generate downward thrust on the conical cylinder 643 to ensure the position of the conical cylinder 643.

[0066] In this embodiment, the second connector 10 is integrated with the upper cover 61 and communicates with the first inner tube body 621 . The first connector 9 is fixed on the side of the outer tube 63 .

[0067] In this embodiment, the entire mixing piece 64 can be conveniently taken out and cleaned by pulling out the spring telescopic rod 641 .

[0068] Embodiment 2

[0069] Combination Figure 13-Figure 16 As shown, the difference between this embodiment and the first embodiment is that the nozzle assembly includes a pair of spray nozzles 7 , and the pair of spray nozzles 7 includes two groups of second nozzles 71 and a high-pressure air nozzle 72 .

[0070] The two groups of second nozzles 71 serve as rubber asphalt nozzles and matrix asphalt nozzles respectively. Each group of second nozzles 71 includes a second tube body 711 and an inclined nozzle 713 arranged at the lower end of the second tube body 711. The two second tube bodies 711 are arranged one after the other along the length direction of the vehicle body, and the two inclined nozzles 713 are inclined in a V shape relative to each other. The nozzle is arranged at the lower ends of the two inclined nozzles 713, and the outer edge of the nozzle is duckbill-shaped along the width direction of the vehicle body; the high-pressure air nozzle 72 is located in the middle between the two second tube bodies 711, and the lower end of the high-pressure air nozzle 72 has an air outlet.

[0071] In this embodiment, the rubber asphalt nozzle and the matrix asphalt nozzle spray out from the two inclined nozzles 713 respectively, so that the two inclined nozzles 713 spray out in a triangular shape, and the rubber asphalt and the matrix asphalt are sprayed and intersect on the center line of the V. A nozzle connector 722 is provided at the upper end of the high-pressure air nozzle 72 for connecting a high-pressure air pump. The high-pressure air pump is assembled on the carrier vehicle 1. The high-pressure airflow sprayed from the high-pressure air nozzle 72 can make the intersecting rubber asphalt and matrix asphalt spray downward again in a vertical downward posture and reach the ground.

[0072] Therefore, the rapid cross-linking construction equipment for the rubber asphalt anti-cracking layer provided in this embodiment can cross-link the rubber asphalt and the matrix asphalt after they are sprayed and intersected. On the one hand, it can improve the uniformity of cross-linking, and on the other hand, it can shorten the cross-linking time of the material on the ground.

[0073] In addition, the base asphalt and rubber asphalt can be self-mixed due to the effect of the injection pressure when they meet, thereby further avoiding the situation in the prior art where incomplete cross-linking is caused by the spraying thickness.

[0074] Furthermore, compared with the first embodiment in which cross-linking is performed in the nozzle, the present embodiment starts cross-linking after spraying, which can completely avoid the nozzle clogging caused by the viscosity of the material in the nozzle.

[0075] Preferably, the air port is in the shape of a long slit or a porous shape, so as to be able to adapt to the material with width sprayed out by the rubber asphalt nozzle and the matrix asphalt nozzle.

[0076] Optionally, the angle between the two inclined nozzles 713 is 60°-90°. This is because in actual use, when the angle between the two inclined nozzles 713 is greater than 90°, the yaw degree of the two groups of sprayed materials increases significantly, resulting in the inability of the high-pressure gas nozzle 72 to accurately spray the material downward. When it is less than 60°, the distance between the two groups of second nozzles 71 will be too small, which greatly occupies the position of the high-pressure gas nozzle 72, causing the installation position of the high-pressure gas nozzle 72 to move upward. The upward position of the high-pressure gas nozzle 72 causes the ejected high-pressure gas to contact the intersecting material at a farther range, resulting in the high-pressure gas not having enough spray force to spray the intersecting material downward.

[0077] In addition, in this embodiment, the first connector 9 is disposed on the upper end of one of the second tube bodies 711 , and the second connector 10 is disposed on the upper end of the other second tube body 711 .

[0078] Embodiment 3

[0079] Combination Figure 18-Figure 19 As shown, the difference between this embodiment and the above two embodiments is that the nozzle assembly includes a third nozzle 8, and the third nozzle 8 includes a third inner tube 81 as a rubber asphalt nozzle and a third outer tube 82 as a matrix asphalt nozzle; the third outer tube 82 includes a circular tube area 821 sleeved on the outer periphery of the third inner tube 81 and side nozzles 822 arranged on both sides of the lower end of the circular tube area 821, the lower ends of the side nozzles 822 are inclined toward the lower end of the third inner tube 81, and the lower ends of the side nozzles 822 and the lower end of the third inner tube 81 are provided with nozzles, and the outer edge of the nozzle at the lower end of the third inner tube 81 is duckbill-shaped along the width direction of the vehicle body.

[0080] In this embodiment, the second connector 10 is integrated with the third inner tube 81 , and the first connector 9 is fixed on the side of the circular tube area 821 .

[0081] In this embodiment, rubber asphalt is sprayed from the third inner tube 81, and matrix asphalt is sprayed from the side nozzle 822. The spraying pressure of the side nozzle 822 is controlled to be lower than the spraying pressure of the third inner tube 81. The rubber asphalt on both sides are sprayed to realize two-stream intersection. After the intersection, the injection pressure of the two offsets each other. The rubber asphalt sprayed from the third inner tube 81 above can also intersect to realize three-stream intersection. The injection pressure of the rubber asphalt is used to spray the two matrix asphalts onto the ground at the same time.

[0082] Therefore, the rapid cross-linking construction equipment for the rubber asphalt anti-cracking layer provided in this embodiment can cross-link the rubber asphalt and the matrix asphalt after they are sprayed and intersected. On the one hand, it can improve the uniformity of cross-linking, and on the other hand, it can shorten the cross-linking time of the material on the ground.

[0083] In addition, the base asphalt and rubber asphalt can be self-mixed due to the effect of the injection pressure when they meet, thereby further avoiding the situation in the prior art where incomplete cross-linking is caused by the spraying thickness.

[0084] On the other hand, the present invention also provides a method for rapid cross-linking construction of a rubber asphalt anti-cracking layer, which is applied to the above-mentioned rapid cross-linking construction equipment of a rubber asphalt anti-cracking layer, and comprises the following steps:

[0085] S1 injects rubber asphalt into rubber asphalt mixing tank 2, and maintains the temperature in rubber asphalt mixing tank 2 at 160-190°C, injects base asphalt with a certain proportion of sulfur and accelerator into base asphalt mixing tank 3, and maintains the temperature in base asphalt mixing tank 3 at 120-140°C, and uses stirring devices in rubber asphalt mixing tank 2 and base asphalt mixing tank 3 to stir rubber asphalt and base asphalt, and feeds sand and gravel into gravel bucket 4;

[0086] S2 starts pump group 1, pump group 2 and gravel feeding assembly 13 while the carrier vehicle 1 is driving, so that the rubber asphalt and the matrix asphalt are sprayed synchronously. The rubber asphalt and the matrix asphalt are sprayed out from the rubber asphalt nozzle and the matrix asphalt nozzle respectively, and contact and cross-link before reaching the ground, thereby increasing the contact area between the rubber asphalt and the matrix asphalt when cross-linking. Then the gravel feeding assembly 13 is sprinkled out and covers the cross-linked material.

[0087] 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.

[0088] 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 rubber asphalt anti-cracking layer rapid cross-linking construction equipment, comprising a carrier vehicle (1), a rubber asphalt mixing tank (2) and a base asphalt mixing tank (3) arranged on the carrier vehicle (1), characterized in that: It also includes a nozzle assembly, which is arranged at the rear of the carrier vehicle (1), and includes a rubber asphalt nozzle and a matrix asphalt nozzle, the rubber asphalt nozzle and the matrix asphalt nozzle are close to each other, and the nozzles of the rubber asphalt nozzle and the matrix asphalt nozzle are arranged non-parallel, so that the materials in the rubber asphalt nozzle and the matrix asphalt nozzle can contact each other and then reach the ground synchronously, so as to improve the cross-linking uniformity of the rubber asphalt and the matrix asphalt; Adding sulfur and accelerator to the base asphalt in the base asphalt mixing tank (3); The nozzle assembly comprises a mixing nozzle (6), wherein the mixing nozzle (6) comprises an inner tube (62) serving as a rubber asphalt nozzle, an outer tube (63) serving as a matrix asphalt nozzle, and an upper cover (61) for sealing the inner tube (62) and the outer tube (63); The outer tube (63) is arranged on the periphery of the inner tube (62), the lower end of the inner tube (62) protrudes from the lower end of the outer tube (63), a gap is formed between the inner tube (62) and the outer tube (63), the gap is used to accommodate the matrix asphalt to be discharged, and a through hole (622) is radially opened on the inner tube (62) at a position close to the lower end of the outer tube (63), the through hole (622) is used to deliver the matrix asphalt in the gap into the inner tube (62); A mixing chamber (624) is provided at the lower end of the inner tube (62); The upper cover (61) comprises a cover body (611), and the cover body (611) is rotatably connected to the outer tube (63) via a thread; The inner tube (62) comprises a first inner tube body (621), the nozzle is located at the lower end of the first inner tube body (621), and the outer edge of the nozzle is provided with a duckbill-shaped opening along the width direction of the vehicle body; A narrow diameter portion (623) is provided in the first inner tube (621) at a position opposite to the through hole (622), so that the rubber asphalt can absorb the matrix asphalt from the through hole (622) when passing through the narrow diameter portion (623) at a high speed; The mixing nozzle (6) further comprises a mixing element (64), wherein the mixing element (64) comprises: A cylinder (644), the cylinder (644) being inserted into the narrow diameter portion (623), and a region of the cylinder (644) opposite to the through hole (622) having a hollow region (645); A conical cylinder (643), wherein the upper end of the narrow diameter portion (623) is provided as a conical cavity (625), the conical cylinder (643) is provided at the upper end of the cylinder body (644), and the conical cavity (625) limits radial and axial movement of the conical cylinder (643); A turbine (642), the turbine (642) being fixedly mounted on the upper end of the conical cylinder (643), and a spring telescopic rod (641) being rotatably mounted on the upper end of the turbine (642) via a bearing, a friction disk (647) being fixedly mounted on the upper end of the spring telescopic rod (641), and a pressure block (613) adapted to the friction disk (647) being fixedly mounted in the cover body (611), so that the spring telescopic rod (641) generates downward pressure on the turbine (642); A stirring rod (648), wherein the lower end of the stirring rod (648) is located at the lower end of the barrel (644), and the upper end of the stirring rod (648) is located inside the barrel (644) and extends to the position of the hollow area (645); the upper end of the stirring rod (648) is a flat structure, and the stirring rod (648) and the lower end of the barrel (644) are rotatably connected via a pin shaft (646).

2. The rapid cross-linking construction equipment for rubber asphalt anti-cracking layer according to claim 1 is characterized by: The nozzle assembly comprises a spray nozzle (7), and the spray nozzle (7) comprises: Two groups of second nozzles (71), the two groups of second nozzles (71) serving as rubber asphalt nozzles and matrix asphalt nozzles respectively, each group of second nozzles (71) comprising a second tube body (711) and an inclined nozzle (713) arranged at the lower end of the second tube body (711), the two second tube bodies (711) being arranged one in front of the other in the length direction of the vehicle body, and the two inclined nozzles (713) being inclined in a V-shape relative to each other, the nozzle being arranged at the lower ends of the two inclined nozzles (713), and the outer edges of the nozzle being in a duckbill shape along the width direction of the vehicle body; A high-pressure gas nozzle (72), the high-pressure gas nozzle (72) being located in the middle between the two second tube bodies (711), the lower end of the high-pressure gas nozzle (72) having a gas port, the gas port being in the shape of a long slit or a porous shape, and the high-pressure gas nozzle (72) being connected to a high-pressure gas pump.

3. A rubber asphalt anti-cracking layer rapid cross-linking construction equipment according to claim 2, characterized in that: The angle between the two inclined nozzles (713) is 60°-90°.

4. The rapid cross-linking construction equipment for rubber asphalt anti-cracking layer according to claim 1 is characterized by: The nozzle assembly comprises a third nozzle (8), wherein the third nozzle (8) comprises a third inner tube (81) serving as a rubber asphalt nozzle and a third outer tube (82) serving as a base asphalt nozzle; The third outer tube (82) comprises a circular tube area (821) sleeved on the outer periphery of the third inner tube (81) and side nozzles (822) arranged on both sides of the lower end of the circular tube area (821); the lower ends of the side nozzles (822) are inclined toward the lower end of the third inner tube (81); the lower ends of the side nozzles (822) and the lower ends of the third inner tube (81) both have nozzles; the outer edge of the nozzle at the lower end of the third inner tube (81) is in a duckbill shape along the width direction of the vehicle body.

5. A rubber asphalt anti-cracking layer rapid cross-linking construction equipment according to any one of claims 1 to 4, characterized in that: It also includes a pipe support (5) fixedly mounted at the rear of the carrier vehicle (1), wherein a first nozzle and a second nozzle are arranged side by side along the length direction in the pipe support (5); One end of the nozzle pipe 1 is connected to the rubber asphalt mixing tank (2) through the first material delivery pipe (11) and the pump group 1, and the rubber asphalt nozzles are fixed on the nozzle pipe 1 at equal intervals; One end of the second nozzle pipe is connected to the base asphalt mixing tank (3) through the second material delivery pipe (12) and the second pump group, and the base asphalt nozzles are fixed on the second nozzle pipe at equal intervals.

6. A rubber asphalt anti-cracking layer rapid cross-linking construction equipment according to claim 5, characterized in that: It also comprises a crushed stone bucket (4), which is mounted above the rear end of the carrier vehicle (1), and a crushed stone feeding assembly (13) is provided on one side of the crushed stone bucket (4), and the crushed stone feeding assembly (13) is located on a side of the pipeline support (5) away from the front end of the vehicle.

7. A method for rapid cross-linking construction of a rubber asphalt anti-cracking layer, applied to a rapid cross-linking construction equipment for a rubber asphalt anti-cracking layer as claimed in any one of claims 1 to 6, characterized in that: The following steps are involved: S1 injects rubber asphalt into the rubber asphalt mixing tank (2), and maintains the temperature in the rubber asphalt mixing tank (2) at 160-190° C., injects base asphalt to which a certain proportion of sulfur and accelerator are added into the base asphalt mixing tank (3), and maintains the temperature in the base asphalt mixing tank (3) at 120-140° C., and uses stirring devices in the rubber asphalt mixing tank (2) and the base asphalt mixing tank (3) to stir the rubber asphalt and the base asphalt, and feeds sand and gravel into the gravel bucket (4); S2 starts pump group 1, pump group 2 and crushed stone feeding assembly (13) while the carrier vehicle (1) is driving, so that the rubber asphalt and the matrix asphalt are sprayed synchronously. The rubber asphalt and the matrix asphalt are sprayed out from the rubber asphalt nozzle and the matrix asphalt nozzle respectively, and contact and cross-link before reaching the ground, thereby increasing the contact area between the rubber asphalt and the matrix asphalt when cross-linking. Then the crushed stone feeding assembly (13) is sprinkled out and covers the cross-linked material.

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