High rutting resistance pavement construction method applicable to highway intersection sections

Abstract

The present invention provides a pavement construction method with high rutting resistance performance applicable to highway intersection sections. S1. Pavement cleaning: Remove sundries on the base layer of the highway intersection section, level the base layer, protect and cover the manhole cover position, and spray tack coat. S2. Asphalt paving of the lower layer. S3. Asphalt paving of the upper layer. S4. Pavement rolling. S5. Pavement inspection: Place a flatness meter on the upper layer to detect the pavement flatness. By laying two layers of asphalt mixtures with different thicknesses and component materials, the present invention enhances the top surface structure strength. During the laying process, the paving equipment is used to control the discharge amount to ensure the laying thickness of the two-layer pavement, and at the same time, reciprocating flat rolling is carried out to ensure the uniformity of the thickness after laying and the stability of the structure, thereby ensuring the overall structure strength of the pavement.

Description

Technical Field

[0001] The invention relates to the technical field of highway pavement construction, and in particular to a high-rutting-resistance pavement construction method suitable for highway intersection sections. Background Art

[0002] A layered structure constructed within the roadway on the roadbed. It bears traffic loads, resists wheel wear, and maintains a smooth surface. Pavement structures primarily consist of a base layer and a surface layer. Highway intersections place higher demands on the pavement's structural strength. To enhance the surface layer's structural strength, multiple layers of asphalt mixtures with varying materials are typically used to improve the road's performance.

[0003] Currently, during pavement construction, dump trucks mix the asphalt mixture and transport it to the site. The asphalt mixture in the dump truck is then poured into the paving equipment. The paving equipment and dump truck move synchronously, and the paving equipment mixes the asphalt mixture and distributes it to the paving equipment. Multiple layers of asphalt mixture are laid out in layers, and after paving, the road surface is compacted by a roller to obtain the pavement structure. However, this pavement construction method may have the following problems, which may reduce the overall structural strength of the pavement:

[0004] Because the road surface requires multiple layers of asphalt mixture to be laid flatly as the surface structure, and the thickness of each layer varies, the paving equipment directly discharges the asphalt mixture poured in by the dump truck after mixing it. The discharge volume is difficult to control, and the one-way movement method of paving and flattening the road surface makes it difficult to ensure the uniformity of the paving thickness and the stability of the structure.

[0005] In summary, there is a need for a construction method for a high-rutting-resistance pavement with high uniformity and stability and suitable for highway intersection sections. Summary of the Invention

[0006] In view of the deficiencies in the prior art, the present invention provides a high rutting resistance pavement construction method suitable for highway intersection sections, solving the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A high rutting resistance pavement construction method applicable to highway intersection sections comprises the following steps:

[0009] S1, road cleaning;

[0010] Clean up debris on the base of the highway intersection, level the base, protect and shield the manhole cover, and spray tack coat oil;

[0011] S2, lower layer asphalt paving;

[0012] S2.1. Unloading and mixing

[0013] The unloading truck transports the lower layer asphalt mixture to the site. The arrival temperature of the lower layer asphalt mixture is 155 - 160°C. The unloading truck docks with the paving equipment for discharging, and the paving equipment mixes the lower layer asphalt mixture.

[0014] S2.2. Controlling the discharge

[0015] The paving equipment moves and controls the discharge of the lower layer asphalt mixture onto the base layer, with a moving speed of 1 - 3 m / min.

[0016] S2.3. Hot pressing and paving

[0017] The paving equipment preheats the flattening structure, with a preheating temperature of 100 - 140°C. The paving equipment reciprocally drives the flattening structure to flatten the lower layer asphalt mixture, and the thickness of the lower layer asphalt mixture is 8 - 9 cm.

[0018] S3. Upper layer asphalt paving

[0019] S3.1. Unloading and mixing

[0020] The unloading truck transports the upper layer asphalt mixture to the site. The arrival temperature of the upper layer asphalt mixture is 155 - 160°C. The unloading truck docks with the paving equipment for discharging, and the paving equipment mixes the upper layer asphalt mixture.

[0021] S3.2. Controlling the discharge

[0022] The paving equipment moves and controls the discharge of the upper layer asphalt mixture onto the upper layer, with a moving speed of 1 - 3 m / min.

[0023] S3.3. Hot pressing and paving

[0024] The paving equipment preheats the flattening structure, with a preheating temperature of 100 - 140°C. The paving equipment reciprocally drives the flattening structure to flatten the upper layer asphalt mixture, and the thickness of the upper layer asphalt mixture is 4 - 5 cm.

[0025] S4. Road surface rolling

[0026] S4.1. Initial rolling

[0027] The tandem roller rolls the upper layer section by section, with a rolling length of 20 - 30 m for each section and a rolling speed of 1.5 km / h.

[0028] S4.2. Re-rolling

[0029] The tandem roller rolls the upper layer section by section, with a rolling length of 50 - 80 m for each section and a rolling speed of 2 km / h.

[0030] S5. Road surface inspection

[0031] The smoothness meter is placed on the upper layer to detect the smoothness of the road surface.

[0032] Furthermore, the paving equipment includes a vehicle body, a hydraulic body is fixed on the front side of the vehicle body, a hydraulic rod is connected to the side of the hydraulic body away from the vehicle body, one end of the hydraulic rod is connected to a push block, the push block is connected to a fixed block away from the hydraulic rod, a side wall of the fixed block is connected to a unloading mechanism with a discharge amount control structure, the bottom surface of the fixed block is connected to a support plate, one side of the support plate is connected to the unloading mechanism, a lifting guide plate passes through the interior of the support plate, an ironing plate is vertically fixed to the bottom surface of the lifting guide plate, an insertion rod is fixed to the top surface of the ironing plate, a guide cylinder is fixed to the side wall of the push block, the top end of the insertion rod passes through the interior of the support plate and is inserted into the interior of the guide cylinder, a limiting block is fixed to the top surface of the support plate, a pushing assembly is connected to the side wall of the hydraulic body, and one side of the pushing assembly is inserted into the interior of the limiting block.

[0033] Furthermore, the discharge mechanism includes a discharge control component, a discharge hopper, a screw rod, a protective cover, a transmission box, a second motor, a roller and a guide box. A discharge port is opened on the front side of the discharge hopper, a discharge control component is provided on the front side of the discharge hopper, a guide box is fixed on the back side of the discharge hopper, a fixed block is connected to the side wall of the guide box, a screw rod is connected through the inside of the discharge hopper, transmission boxes are fixed on both sides of the discharge hopper, a protective cover is provided on the top surface of the transmission box, a second motor is provided on one side of the transmission box, both ends of the screw rod are respectively passed through the inside of the two transmission boxes, the rotating end of the second motor passes through the inside of the transmission box and is connected to one end of the screw rod, a rotating shaft is inserted into the inside of the roller, and one end of the rotating shaft passes through the inside of the transmission box.

[0034] Furthermore, a first transmission wheel is sleeved and fixed on the outer wall of the spiral rod, and a second transmission wheel is sleeved and fixed on the outer wall of the rotating shaft. The first transmission wheel and the second transmission wheel are synchronously connected through a belt.

[0035] Furthermore, the discharge control assembly includes a fixed box, a first stop post, a threaded rod, a second stop post, a sliding rod, a push plate, a material stop plate and a first motor. The fixed box is fixed to the front side of the lower hopper. Two push plates are provided inside the fixed box. A first stop post and a second stop post are provided between the two push plates. A material stop plate is fixed to the side wall of the push plate. One side of the material stop plate is fitted with the front side of the lower hopper to block the discharge opening.

[0036] Both ends of the first stop column are connected to a threaded rod, the two threaded rods are mirror-imaged and respectively penetrate and connect to the inside of the two push plates, one end of the threaded rod penetrates the fixed box and is connected to the first motor, and the first motor is fixed to the outer wall of the fixed box;

[0037] Both ends of the second stop column are connected to a sliding rod, the two sliding rods are mirror-imaged and respectively penetrate and connect to the inside of the two push plates, and one end of the two sliding rods is rotatably connected to the inside of the fixed box.

[0038] Furthermore, the pushing plate is a two-segment bending structure and is divided into an inclined segment and a horizontal segment. The inclined segment of the pushing plate is slidably attached to the front side of the blanking hopper, and the horizontal segment of the pushing plate is slidably attached to the bottom surface of the blanking hopper.

[0039] Furthermore, a slider is fixed on the top surface of the horizontal segment of the pushing plate. A first sliding interface is opened on the bottom surface of the guiding box. The top surface of the slider penetrates through the inside of the guiding box and is fixed with a sliding push column. A second sliding interface is opened inside the lifting guiding plate. The second sliding interface is an opening structure that slopes downward from the middle of the lifting guiding plate to both sides. Two second sliding interfaces are symmetrically opened with respect to the vertical center line of the lifting guiding plate. One end of the sliding push column penetrates through the outside of the guiding box and is slidably connected to the inside of the second sliding interface.

[0040] Furthermore, a scraping block is fixed on the side wall of the pushing plate. The top surface of the scraping block is slidably attached to the bottom surface of the blanking hopper, and the bottom surface of the scraping block is a slope structure.

[0041] Furthermore, the pushing component includes a pushing plate, a guide rod, a sleeve, a fixing bolt, a spring, a first sliding plate, a second sliding plate, and a positioning block. The guide rod is a U-shaped structure. One end of the guide rod is inserted into the inside of the hydraulic body, and the other end is fixed with a pushing plate. The outer wall of the guide rod is sleeved with a sleeve. A fixing bolt is connected to the side wall of the sleeve. One end of the fixing bolt penetrates through the inside of the sleeve and is used to clamp the outer wall of the guide rod. The outer wall of the guide rod is sleeved with a spring. One end of the spring is connected to the end face of the sleeve, and the other end is connected to the side wall of the hydraulic body;

[0042] A first sliding plate is fixed on the side wall of the sleeve. One side of the first sliding plate penetrates through the inside of the limiting block and is fixed with a second sliding plate. A positioning block is fixed on one side of the second sliding plate. One side of the second sliding plate is a right trapezoidal structure with a gradually decreasing width in the direction away from the first sliding plate. A roller is rotatably connected to the inside of the limiting block, and the side wall of the roller is in rolling contact with the side wall of the first sliding plate.

[0043] The present invention provides a pavement construction method with high rut resistance performance applicable to highway intersection sections. Compared with the prior art, it has the following beneficial effects:

[0044] 1. By laying two layers of asphalt mixtures with different thicknesses and composition materials, the top surface structure strength is enhanced. During the laying process, the paving equipment is used to control the discharge amount to ensure the paving thickness of the two-layer road surface, and at the same time, reciprocating flat pressing is carried out to ensure the uniformity of the thickness and the stability of the structure after paving, thereby ensuring the overall structure strength of the road surface;

[0045] 2. When moving the two pushing plates to make the baffle block block and reduce the area of the blanking port, the blanking amount can be adjusted. At the same time, the pushing plate drives the sliding push column to slide inside the inclined second sliding interface, so that the lifting guiding plate can be driven to descend, and the height of the screed can be lowered, so that the flat pressing thickness can be adjusted synchronously according to the discharge amount, and the screed can be used to smoothly flatten the asphalt mixture;

[0046] 3. When the support plate moves towards the hydraulic body, the second slide plate slides inside the limit block. The second slide plate enters inside the limit plate. Since the width of the second slide plate gradually decreases, under the restriction of the limit block, the second slide plate drives the sleeve to move towards the hydraulic body, so that the guide rod drives the pushing plate to push towards the middle of the road surface, gathering the scattered asphalt mixture together and re-compacting and shaping it, thus ensuring the stability of the road surface side structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following-described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0048] Figure 1 Shows the flow schematic diagram of the high rutting resistance pavement construction method applicable to highway intersection sections of the present invention;

[0049] Figure 2 Shows the structural schematic diagram of the paving equipment of the present invention;

[0050] Figure 3 Shows the structural schematic diagram of the feeding mechanism of the paving equipment;

[0051] Figure 4 Shows the connection structural schematic diagram of the sliding push column and the lifting guide plate of the paving equipment;

[0052] Figure 5 Shows the structural schematic diagram of the bottom surface of the hopper of the paving equipment;

[0053] Figure 6 Shows the sectional view of the connection structure between the feeding mechanism and the lifting guide plate of the paving equipment;

[0054] Figure 7 Shows the structural schematic diagram of the pushing component of the paving equipment;

[0055] Figure 8 Shows the structural schematic diagram of the paving equipment in the extended and flat pressing state of the present invention;

[0056] As shown in the figure: 1. blanking mechanism; 11. discharge control component; 111. fixed box; 112. first stop post; 113. threaded rod; 114. second stop post; 115. slide bar; 116. push plate; 1161. slider; 1162. sliding push post; 1163. scraping block; 117. material baffle; 118. first motor; 12. hopper; 121. blanking port; 13. screw rod; 131. first transmission wheel; 14. protective cover; 15. transmission box; 16. second motor; 17. roller; 171. rotating shaft; 172. second transmission wheel; 18. guide box; 181. first sliding interface; 2. lifting guide plate; 21. second sliding interface; 3. screed; 31. inserting rod; 4. support plate; 41. limiting block; 411. roller; 5. pushing component; 51. pushing plate; 52. guide rod; 53. sleeve; 54. fixing bolt; 55. spring; 56. first sliding plate; 57. second sliding plate; 58. positioning block; 6. outer pushing block; 61. fixing block; 62. guide cylinder; 7. hydraulic rod; 8. hydraulic body; 9. vehicle body. Detailed implementation mode

[0057] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0058] Embodiment 1

[0059] To solve the technical problems in the background art, the following pavement construction method with high rutting resistance performance applicable to highway intersection sections is provided:

[0060] Combined with Figures 1-8 As shown, the pavement construction method with high rutting resistance performance applicable to highway intersection sections provided by the present invention includes the following steps:

[0061] S1. Pavement cleaning;

[0062] Clean the sundries on the base layer of the highway intersection section, level the base layer, protect and cover the well lid position, and spray tack coat.

[0063] S2. Asphalt paving of the lower layer;

[0064] S2.1. Unloading and mixing;

[0065] The unloading truck transports the asphalt mixture of the lower layer to the site. The arrival temperature of the asphalt mixture of the lower layer is 155 - 160 °C. The unloading truck is connected to the paving equipment for blanking, and the paving equipment mixes the asphalt mixture of the lower layer.

[0066] S2.2. Control the discharge of materials;

[0067] The paving equipment moves and controls the discharge of the asphalt mixture of the lower layer onto the base layer, and the moving speed is 1 - 3 m / min;

[0068] S2.3. Hot press and pave;

[0069] The paving equipment preheats the flattening structure, and the preheating temperature is 100 - 140 °C. The paving equipment reciprocally drives the flattening structure to flatten the asphalt mixture of the lower layer, and the thickness of the asphalt mixture of the lower layer is 8 - 9 cm;

[0070] S3. Asphalt paving of the upper layer;

[0071] S3.1. Unload and mix;

[0072] The dump truck transports the asphalt mixture of the upper layer to the site. The arrival temperature of the asphalt mixture of the upper layer is 155 - 160 °C. The dump truck is connected to the paving equipment for discharging materials, and the paving equipment mixes the asphalt mixture of the upper layer;

[0073] S3.2. Control the discharge of materials;

[0074] The paving equipment moves and controls the discharge of the asphalt mixture of the upper layer onto the upper layer, and the moving speed is 1 - 3 m / min;

[0075] S3.3. Hot press and pave;

[0076] The paving equipment preheats the flattening structure, and the preheating temperature is 100 - 140 °C. The paving equipment reciprocally drives the flattening structure to flatten the asphalt mixture of the upper layer, and the thickness of the asphalt mixture of the upper layer is 4 - 5 cm;

[0077] S4. Road surface rolling;

[0078] S4.1. Initial rolling;

[0079] The tandem roller rolls the upper layer section by section. The length of each section is 20 - 30 m, and the rolling speed is 1.5 km / h;

[0080] S4.2. Re - rolling;

[0081] The tandem roller rolls the upper layer section by section. The length of each section is 50 - 80 m, and the rolling speed is 2 km / h;

[0082] S5. Road surface inspection;

[0083] The flatness meter is placed on the upper layer to detect the flatness of the road surface.

[0084] The following effects can be achieved through the above construction method:

[0085] By laying two layers of asphalt mixtures with different thicknesses and constituent materials in a tiled manner to enhance the strength of the top surface structure. During the tiling process, the paving equipment is used to control the discharge amount to ensure the tiled thickness of the two-layer road surface, and at the same time, reciprocating flat pressing is carried out to ensure the uniformity of the thickness and the structural stability after tiling, thereby ensuring the overall structural strength of the road surface.

[0086] Embodiment 2

[0087] As Figures 2-8 shown, on the basis of the above embodiment, the following content is further given in this embodiment:

[0088] To enable the paving equipment to achieve the above effects, the following specific solutions are given:

[0089] The paving equipment includes a vehicle body 9. On one side of the front of the vehicle body 9, a hydraulic body 8 is fixed. On the side of the hydraulic body 8 away from the vehicle body 9, a hydraulic rod 7 is connected. One end of the hydraulic rod 7 is connected to an outer push block 6. On the side of the outer push block 6 away from the hydraulic rod 7, a fixed block 61 is connected. On the side wall of the fixed block 61, a blanking mechanism 1 with a structure for controlling the discharge amount is connected. On the bottom surface of the fixed block 61, a support plate 4 is connected. One side of the support plate 4 is connected to the blanking mechanism 1. A lifting guide plate 2 penetrates through the inside of the support plate 4. At the bottom of the lifting guide plate 2, an ironing plate 3 is vertically fixed. On the top surface of the ironing plate 3, an insertion rod 31 is fixed. On the side wall of the outer push block 6, a guide cylinder 62 is fixed. The top end of the insertion rod 31 penetrates through the inside of the support plate 4 and is inserted into the inside of the guide cylinder 62. On the top surface of the support plate 4, a limit block 41 is fixed. On the side wall of the hydraulic body 8, a material pushing assembly 5 is connected. One side of the material pushing assembly 5 is inserted into the inside of the limit block 41;

[0090] By introducing the asphalt mixture laid on the ground into the inside of the blanking mechanism 1, and then after the blanking mechanism 1 controls the discharge, by driving the hydraulic rod 7 to reciprocate and extend and retract through the hydraulic body 8, the ironing plate 3 can perform a reciprocating flattening action on the asphalt mixture, which can ensure the flattening efficiency and effect of the road surface, thereby ensuring the efficiency of road construction.

[0091] In this embodiment, the unloading mechanism 1 includes a discharge control component 11, a discharge hopper 12, a screw rod 13, a protective cover 14, a transmission box 15, a second motor 16, a roller 17 and a guide box 18. A discharge port 121 is opened on the front side of the discharge hopper 12, and a discharge control component 11 is provided on the front side of the discharge hopper 12. A guide box 18 is fixed on the back side of the discharge hopper 12, and a fixed block 61 is connected to the side wall of the guide box 18. The screw rod 13 is connected to the inside of the discharge hopper 12, and transmission boxes 15 are fixed on both sides of the discharge hopper 12. A protective cover 14 is provided on the top surface of the transmission box 15, and a second motor 16 is provided on one side of the transmission box 15. The two ends of the screw rod 13 respectively pass through the two transmission boxes 15, and the rotating end of the second motor 16 passes through the transmission box 15 and is connected to one end of the screw rod 13. A rotating shaft 171 is inserted into the roller 17, and one end of the rotating shaft 171 passes through the transmission box 15.

[0092] In this embodiment, a first transmission wheel 131 is fixedly sleeved on the outer wall of the spiral rod 13, and a second transmission wheel 172 is fixedly sleeved on the outer wall of the rotating shaft 171. The first transmission wheel 131 and the second transmission wheel 172 are synchronously connected through a belt.

[0093] The first transmission wheel 131 and the second transmission wheel 172 rotate synchronously, so that the roller 17 and the screw rod 13 rotate synchronously, so that the stirring and discharging of the screw rod 13 and the movement of the discharging hopper 12 are synchronous, thereby ensuring the uniformity of the discharging.

[0094] Embodiment 3

[0095] like Figures 2-6 As shown, based on the above embodiment, this embodiment further provides the following content:

[0096] In order to enable the discharge control component 11 to achieve the above-mentioned effects, the following specific solutions are provided:

[0097] The discharge control assembly 11 includes a fixed box 111, a first stop post 112, a threaded rod 113, a second stop post 114, a sliding rod 115, a push plate 116, a material blocking plate 117 and a first motor 118. The fixed box 111 is fixed to the front side of the lower hopper 12. Two push plates 116 are provided inside the fixed box 111. The first stop post 112 and the second stop post 114 are provided between the two push plates 116. A material blocking plate 117 is fixed to the side wall of the push plate 116. One side of the material blocking plate 117 is arranged to fit the front side of the lower hopper 12 to block the discharge port 121.

[0098] Both ends of the first stop column 112 are connected to a threaded rod 113. The two threaded rods 113 are mirror-imaged and respectively penetrate the interior of the two push plates 116. One end of the threaded rod 113 penetrates the fixed box 111 and is connected to the first motor 118. The first motor 118 is fixed to the outer wall of the fixed box 111.

[0099] Both ends of the second stop post 114 are connected with slide bars 115. The two slide bars 115 are arranged in a mirror image and respectively penetrate and are connected to the interiors of the two push plates 116. One ends of the two slide bars 115 are rotatably connected to the interior of the fixed box 111.

[0100] By driving the two push plates 116 respectively through the two mirror-image screw rods 113, the push plates 116 can move towards each other simultaneously or move away from each other simultaneously, so as to drive the baffle plate 117 to adjust the size of the material discharge port 121, thereby realizing the control of the material discharge amount. The adjustment structure is simple and efficient.

[0101] In this embodiment, the push plate 116 is of a two-segment bent structure and is divided into an inclined section and a horizontal section. The inclined section of the push plate 116 slides and fits on the front side of the hopper 12, and the horizontal section of the push plate 116 slides and fits on the bottom surface of the hopper 12.

[0102] In this embodiment, a slider 1161 is fixed on the top surface of the horizontal section of the push plate 116. A first sliding interface 181 is opened on the bottom surface of the guide box 18. The top surface of the slider 1161 penetrates into the interior of the guide box 18 and is fixed with a sliding push post 1162. A second sliding interface 21 is opened in the lifting guide plate 2. The second sliding interface 21 is an opening structure that slopes downward from the middle of the lifting guide plate 2 to both sides. Two second sliding interfaces 21 are symmetrically opened with respect to the vertical center line of the lifting guide plate 2. One end of the sliding push post 1162 penetrates outside the guide box 18 and is slidably connected to the interior of the second sliding interface 21.

[0103] When moving the two push plates 116 to make the baffle plate 117 block and reduce the area of the material discharge port 121, the material discharge amount can be adjusted. At the same time, the push plate 116 drives the sliding push post 1162 to slide in the inclined second sliding interface 21, so as to drive the lifting guide plate 2 to descend, and the height of the screed 3 descends, so as to be able to smoothly flatten asphalt mixtures with different thicknesses.

[0104] In this embodiment, a scraping block 1163 is fixed on the side wall of the push plate 116. The top surface of the scraping block 1163 slides and fits on the bottom surface of the hopper 12, and the bottom surface of the scraping block 1163 is of an inclined surface structure.

[0105] During the process of moving the push plate 116, the push plate 116 drives the scraper to slide on the bottom surface of the hopper 12, so as to scrape off the asphalt mixture sticking to the bottom surface of the hopper 12 and ensure the stability of the movement of the push plate 116.

[0106] Embodiment 4

[0107] As Figure 7 and Figure 8 shown, on the basis of the above embodiment, this embodiment further gives the following content:

[0108] During the reciprocating movement of the screed 3, the screed 3 moves to flatten the asphalt mixture. However, when the asphalt mixture is laid flat on both sides of the road surface, it will disperse towards both sides of the road. After flattening a certain distance, it is necessary to manually push the dispersed asphalt mixture back onto the road surface, which is cumbersome. To solve the above problems, the following structure is adopted:

[0109] The pusher assembly 5 includes a pusher plate 51, a guide rod 52, a sleeve 53, a fixing bolt 54, a spring 55, a first slide plate 56, a second slide plate 57, and a positioning block 58. The guide rod 52 is of a U-shaped structure. One end of the guide rod 52 is inserted into the hydraulic body 8, and a pusher plate 51 is fixed at the other end. A sleeve 53 is sleeved on the outer wall of the guide rod 52. A fixing bolt 54 is connected to the side wall of the sleeve 53. One end of the fixing bolt 54 penetrates into the sleeve 53 and is used to clamp the outer wall of the guide rod 52. A spring 55 is sleeved on the outer wall of the guide rod 52. One end of the spring 55 is connected to the end face of the sleeve 53, and the other end is connected to the side wall of the hydraulic body 8;

[0110] A first slide plate 56 is fixed to the side wall of the sleeve 53. One side of the first slide plate 56 penetrates through the inside of the limit block 41 and is fixed with a second slide plate 57. A positioning block 58 is fixed to one side of the second slide plate 57. One side of the second slide plate 57 is a right trapezoidal structure with a gradually decreasing width in the direction away from the first slide plate 56. A roller 411 is rotatably connected inside the limit block 41, and the side wall of the roller 411 rolls and fits against the side wall of the first slide plate 56;

[0111] When the support plate 4 moves towards the hydraulic body 8, the second slide plate 57 slides inside the limit block 41, and the second slide plate 57 enters the inside of the limit plate. Due to the gradually decreasing width of the second slide plate 57, under the restriction of the limit block 41, the second slide plate 57 drives the sleeve 53 to move towards the hydraulic body 8, so that the guide rod 52 drives the pusher plate 51 to push towards the middle of the road surface, gathering the dispersed asphalt mixture together. Then, during the reciprocating flattening process of the screed 3, the dispersed asphalt mixture will be flattened again on the vertical surface, thus ensuring the stability of the road surface side structure.

[0112] The working principle and usage process of the present invention are as follows:

[0113] S1. Road surface cleaning;

[0114] Clean the debris on the base layer of the road intersection section, level the base layer, protect and cover the manhole cover position, and spray tack coat;

[0115] S2. Asphalt paving of the lower layer;

[0116] S2.1. Unloading and mixing;

[0117] The unloading truck transports the lower layer asphalt mixture to the site. The arrival temperature of the lower layer asphalt mixture is 155°C. The unloading truck is docked with the paving equipment for discharging materials, and the paving equipment stirs the lower layer asphalt mixture.

[0118] The above steps are specifically as follows: The unloading truck pours the lower layer asphalt mixture into the hopper 12. The SFP-20 material is used in the lower layer asphalt mixture. The vehicle body 9 moves, and the second motor 16 drives the screw rod 13 to rotate and stir the lower layer asphalt mixture. The first transmission wheel 131 and the second transmission wheel 172 rotate synchronously through the belt. The second transmission wheel 172 drives the rotating shaft 171 to rotate, and the roller 17 and the screw rod 13 rotate synchronously.

[0119] S2.2. Control the discharging.

[0120] The paving equipment moves and controls the discharging of the lower layer asphalt mixture onto the base layer, and the moving speed is 1 m / min.

[0121] The above steps are specifically as follows: The first motor 118 drives the threaded rod 113 to rotate. The two threaded rods 113 with opposite thread directions rotate inside the fixed box 111, moving the two push plates 116 towards each other and reducing the spacing distance. The push plate 116 drives the baffle plate 117 towards the discharge port 121, covering the opening size of the discharge port 121, thereby controlling the discharge amount of the lower layer asphalt mixture discharged.

[0122] During the process of the two push plates 116 moving towards each other, the slider 1161 slides inside the first sliding interface 181 on the bottom surface of the guiding box 18. The slider 1161 drives the sliding push column 1162 to slide inside the second sliding interface 21. Since the second sliding interface 21 is of an inclined structure, the sliding push column 1162 will push the lifting guiding plate 2 downward during the translation process. The lifting guiding plate 2 drives the ironing plate 3 to descend. The inserting rod 31 slides inside the guide cylinder 62, guiding the ironing plate 3 to descend. The ironing plate 3 reaches the flat-laying height corresponding to the discharge amount of the lower layer asphalt mixture.

[0123] S2.3. Hot press and pave.

[0124] The paving equipment preheats the flattening structure, and the preheating temperature is 100°C. The paving equipment reciprocally drives the flattening structure to flatten the lower layer asphalt mixture, and the thickness of the lower layer asphalt mixture is 8 cm.

[0125] Specifically, the above steps are as follows: The ironing plate 3 is heated by electric heating wires inside. The hydraulic body 8 extends the hydraulic rod 7. The outer pushing block 6 drives the support plate 4 away from the hydraulic body 8. The limiting block 41 moves towards the second sliding plate 57. The roller 411 first rolls along the side wall of the first sliding plate 56 and then along the side wall of the second sliding plate 57. As the limiting block 41 reaches the position with a smaller width of the second sliding plate 57, the spring 55 pushes the sleeve 53 away from the hydraulic body 8, and the guide rod 52 extends out from inside the hydraulic body 8 and drives the pushing plate 51 to extend to both sides of the road surface;

[0126] After the ironing plate 3 moves and levels the underlying asphalt mixture, part of the underlying asphalt mixture spreads out beyond both sides of the road surface. Then, the vehicle body 9 moves forward, and the hydraulic body 8 pulls back the outer pushing block 6. During the movement of the limiting block 41 on the second sliding plate 57, the guide rod 52 is inserted back into the hydraulic body 8 and drives the pushing plate 51 to move towards the center of the road surface. The pushing plate 51 pushes the underlying asphalt mixture that has spread out beyond the roadside back onto the road surface until the limiting block 41 moves onto the first sliding plate 56;

[0127] The limiting block 41 continues to move on the first sliding plate 56, the position of the pushing plate 51 remains unchanged, and the ironing plate 3 moves towards the hydraulic body 8 to re-flatten the underlying asphalt mixture pushed back from the side;

[0128] S3. Asphalt paving for the upper layer;

[0129] S3.1. Unloading and mixing;

[0130] The unloading truck transports the upper layer asphalt mixture to the site. The arrival temperature of the upper layer asphalt mixture is 155 °C. The unloading truck is docked with the paving equipment for discharging, and the paving equipment mixes the upper layer asphalt mixture;

[0131] Specifically, the above steps are as follows: The unloading truck pours the upper layer asphalt mixture into the feeding hopper 12. The upper layer asphalt mixture uses SMA-13 mixture to improve the rutting resistance of the road surface;

[0132] S3.2. Controlling the discharge;

[0133] The paving equipment moves and controls the discharge of the upper layer asphalt mixture onto the upper layer at a moving speed of 1 m / min;

[0134] S3.3. Hot pressing and paving;

[0135] The paving equipment preheats the flattening structure at a preheating temperature of 100 °C. The paving equipment reciprocally drives the flattening structure to flatten the upper layer asphalt mixture. The thickness of the upper layer asphalt mixture is 4 cm;

[0136] S4. Road surface rolling;

[0137] S4.1. Initial rolling;

[0138] The tandem steel wheel roller compacts the surface course section by section, with the section-by-section compaction length being 20 m and the compaction speed being 1.5 km / h;

[0139] S4.2, Double compaction;

[0140] The tandem steel wheel roller compacts the surface course section by section, with the section-by-section compaction length being 50 m and the compaction speed being 2 km / h;

[0141] S5, Road surface detection;

[0142] The profilograph is placed on the surface course to detect the road surface evenness.

[0143] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprises", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0144] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent substitution on some of the technical features; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A pavement construction method with high rutting resistance performance applicable to highway intersection sections, characterized in that: The construction method includes the following steps: S1. Road surface cleaning; Clean the sundries on the base layer of the road intersection section, level the base layer, protect and cover the manhole cover position, and spray tack coat; S2. Asphalt paving of the lower layer; S2.

1. Unloading and mixing; The unloading truck transports the asphalt mixture of the lower layer to the site. The arrival temperature of the asphalt mixture of the lower layer is 155 - 160 °C. The unloading truck is connected to the paving equipment for discharging materials, and the paving equipment mixes the asphalt mixture of the lower layer. The asphalt mixture of the lower layer adopts the SFP - 20 type; S2.

2. Controlling the discharge; The paving equipment moves and controls the discharge of the asphalt mixture of the lower layer onto the base layer, and the moving speed is 1 - 3 m / min; S2.

3. Hot pressing and paving; The paving equipment preheats the flattening structure, and the preheating temperature is 100 - 140 °C. The paving equipment reciprocally drives the flattening structure to flatten the asphalt mixture of the lower layer. The thickness of the asphalt mixture of the lower layer is 8 - 9 cm; S3. Asphalt paving of the upper layer; S3.

1. Unloading and mixing; The unloading truck transports the asphalt mixture of the upper layer to the site. The arrival temperature of the asphalt mixture of the upper layer is 155 - 160 °C. The unloading truck is connected to the paving equipment for discharging materials, and the paving equipment mixes the asphalt mixture of the upper layer. The asphalt mixture of the upper layer adopts the SMA - 13 type; S3.

2. Controlling the discharge; The paving equipment moves and controls the discharge of the asphalt mixture of the upper layer onto the upper layer, and the moving speed is 1 - 3 m / min; S3.

3. Hot pressing and paving; The paving equipment preheats the flattening structure, and the preheating temperature is 100 - 140 °C. The paving equipment reciprocally drives the flattening structure to flatten the asphalt mixture of the upper layer. The thickness of the asphalt mixture of the upper layer is 4 - 5 cm; S4. Road surface rolling; S5. Road surface detection; The paving equipment includes a vehicle body. On one side of the front of the vehicle body, a hydraulic body is fixed. On the side of the hydraulic body away from the vehicle body, a hydraulic rod is connected. One end of the hydraulic rod is connected to an outer push block. On the side of the outer push block away from the hydraulic rod, a fixed block is connected. On the side wall of the fixed block, a blanking mechanism with a structure for controlling the discharge amount is connected. On the bottom surface of the fixed block, a support plate is connected. One side of the support plate is connected to the blanking mechanism. Inside the support plate, a lifting guide plate penetrates. Vertically fixed to the bottom surface of the lifting guide plate is an ironing plate. On the top surface of the ironing plate, a plug rod is fixed. On the side wall of the outer push block, a guide cylinder is fixed. The top end of the plug rod penetrates through the inside of the support plate and is inserted into the inside of the guide cylinder. On the top surface of the support plate, a limit block is fixed. On the side wall of the hydraulic body, a material pushing component is connected. One side of the material pushing component is inserted into the inside of the limit block; The blanking mechanism includes a discharge control component, a blanking hopper, a screw rod, a protective cover, a transmission box, a second motor, a roller, and a guide box. A blanking port is opened on the front side of the blanking hopper. On the front side of the blanking hopper, a discharge control component is arranged. On the back side of the blanking hopper, a guide box is fixed. The fixed block is connected to the side wall of the guide box. Inside the blanking hopper, a screw rod is connected through. On both sides of the blanking hopper, transmission boxes are fixed. On the top surface of the transmission box, a protective cover is arranged. On one side of the transmission box, a second motor is arranged. The two ends of the screw rod respectively penetrate through the inside of the two transmission boxes. The rotating end of the second motor penetrates through the inside of the transmission box and is connected to one end of the screw rod. Inside the roller, a rotating shaft is inserted. One end of the rotating shaft penetrates through the inside of the transmission box; The discharge control assembly includes a fixed box, a first stop post, a threaded rod, a second stop post, a sliding rod, a push plate, a material stop plate and a first motor. The fixed box is fixed to the front side of the lower hopper. Two push plates are arranged inside the fixed box. A first stop post and a second stop post are arranged between the two push plates. A material stop plate is fixed to the side wall of the push plate. One side of the material stop plate is arranged to fit the front side of the lower hopper to cover the discharge opening. Both ends of the first stop column are connected to a threaded rod, the two threaded rods are mirror-imaged and respectively penetrate and connect to the inside of the two push plates, one end of the threaded rod penetrates the fixed box and is connected to the first motor, and the first motor is fixed to the outer wall of the fixed box; Both ends of the second stop column are connected to a sliding rod, the two sliding rods are mirror-imaged and respectively penetrate and connect to the inside of the two push plates, and one end of the two sliding rods is rotatably connected to the inside of the fixed box; The push plate is a two-section bent structure and is divided into an oblique section and a transverse section. The oblique section of the push plate slides and fits the front side of the lower hopper, and the transverse section of the push plate slides and fits the bottom surface of the lower hopper. A slider is fixed on the top surface of the transverse section of the push plate, a first sliding interface is provided on the bottom surface of the guide box, the top surface of the slider passes through the interior of the guide box and is fixed with a sliding push column, a second sliding interface is provided inside the lifting guide plate, the second sliding interface is an opening structure inclined downward from the middle of the lifting guide plate to both sides, two second sliding interfaces are symmetrically provided about the vertical center line of the lifting guide plate, one end of the sliding push column passes through the outside of the guide box and is slidably connected to the inside of the second sliding interface.

2. The high rutting resistance pavement construction method applicable to the road intersection section according to claim 1, characterized in that: A first transmission wheel is sleeved and fixed on the outer wall of the spiral rod, and a second transmission wheel is sleeved and fixed on the outer wall of the rotating shaft. The first transmission wheel and the second transmission wheel are synchronously connected through a belt.

3. The high rutting resistance pavement construction method applicable to the highway intersection section according to claim 1, characterized in that: A scraper block is fixed on the side wall of the push plate. The top surface of the scraper block is slidably fitted on the bottom surface of the lower hopper. The bottom surface of the scraper block is an inclined structure.

4. The high rutting-resistant performance pavement construction method applicable to the road intersection section according to claim 1, characterized in that: The pusher assembly includes a pusher plate, a guide rod, a sleeve, a fixing bolt, a spring, a first slide plate, a second slide plate and a positioning block. The guide rod is a U-shaped structure. One end of the guide rod is inserted into the hydraulic body and the other end is fixed with the pusher plate. The outer wall of the guide rod is sleeved with a sleeve. The side wall of the sleeve is connected to the fixing bolt. One end of the fixing bolt passes through the interior of the sleeve and is clamped on the outer wall of the guide rod. The outer wall of the guide rod is sleeved with a spring. One end of the spring is connected to the end face of the sleeve and the other end is connected to the side wall of the hydraulic body. A first slide is fixed to the side wall of the sleeve, one side of the first slide passes through the interior of the limit block and is fixed with a second slide, one side of the second slide is fixed with a positioning block, one side of the second slide is a right-angled trapezoidal structure whose width gradually decreases away from the first slide, a roller is rotatably connected inside the limit block, and the side wall of the roller rolls and fits against the side wall of the first slide.

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