Rolling apparatus for asphalt mixtures

Abstract

The application discloses asphalt mixture rolling equipment and belongs to the field of road asphalt pavement regeneration. The device comprises a base and a receiving box. The top of the base is provided with a support frame and a rolling part. Two groups of material cylinders are fixedly connected to the top of the support frame. Two groups of discharge pipes are connected to the bottom of the material cylinders. The ends of the two groups of discharge pipes, which are away from the material cylinders, are oppositely arranged in an inclined manner. An installation plate is fixedly connected to the inside of the support frame. A rotating sleeve is rotatably connected to the middle of the installation plate. A spiral groove is formed in the inner wall of the rotating sleeve. The new and old asphalts are discharged and impacted and fused by the two groups of discharge pipes, and then are fused by rotating and swinging in the spiral groove of the rotating sleeve. After the fusion is completed, the asphalts fall into the receiving box and are rolled by the rolling roller, so that the strength of the asphalts is tested. The proportion of the new and old asphalts is adjusted, the waste of the old asphalt is reduced, the strength of the new asphalt is maintained, and the utilization efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of road asphalt pavement recycling technology, and more specifically to rolling equipment for asphalt mixtures. Background Technology

[0002] The T0703-2011 method for preparing asphalt mixture specimens (wheel rolling method) described in the relevant standard of my country's highway industry, "Test Procedures for Asphalt and Asphalt Mixtures in Highway Engineering" (JTGE20-2011), is one of the important methods for forming asphalt mixture specimens in the laboratory. The asphalt mixture rutting slab specimens formed by this method can be used for testing the physical and mechanical properties of asphalt mixtures. The quality of the rutting slab specimens has a significant impact on the accuracy of the test results. The physical and mechanical properties of asphalt mixtures measured from specimens with good forming quality have significant theoretical guiding significance for guiding the rationality of asphalt mixture design. The asphalt mixture slab specimens formed by the wheel rolling method should reach 100% ± 1% of the Marshall test standard compaction density.

[0003] The current "Technical Specification for Recycling Asphalt Pavement of Highways" (JTG F41-2008) specifies that the construction process for plant-mixed cold recycled asphalt pavement involves mixing recycled asphalt pavement materials with emulsified asphalt, water, cement, and new aggregates at room temperature, followed by paving, compaction, and curing at room temperature. While this process allows for the recycling of aggregates in the recycled asphalt pavement materials, the low degree of bonding between the old asphalt and the recycled mixture results in reduced strength and hardness of the mixed asphalt. This necessitates increasing the proportion of recycled mixture, leading to a low contribution rate from the old asphalt and a significant waste of asphalt resources. Furthermore, it is difficult to achieve a suitable ratio between old asphalt and recycled mixture. Summary of the Invention

[0004] In order to overcome the above-mentioned technical problems, the purpose of this invention is to provide a rolling equipment for asphalt mixtures, so as to solve the problem that in the prior art, due to insufficient mixing, the strength and hardness of the mixture after rolling is low, resulting in a low contribution rate of old asphalt, causing a large waste of asphalt resources, and making it impossible to obtain a suitable ratio between old asphalt and recycled mixture.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A compaction device for asphalt mixtures includes a base and a receiving box. A support frame and compaction components are provided on the top of the base. Two sets of material cylinders are fixedly connected inside the top of the support frame. Two sets of discharge pipes are connected to the bottom of the material cylinders. The ends of the two sets of discharge pipes away from the material cylinders are inclined and opposite to each other. An installation plate is fixedly connected inside the support frame. A rotating sleeve is rotatably connected in the middle of the installation plate. The rotating sleeve is located in the middle of the opposite ends of the two sets of discharge pipes. A spiral groove is opened on the inner wall of the rotating sleeve.

[0007] As a further aspect of the present invention: two sets of rotating shafts are rotatably connected inside the two sets of discharge pipes, and a conveyor belt is rotatably connected to the outer wall of the rotating shafts. A conveyor motor is fixedly connected to the outer wall of the two sets of discharge pipes, and the two sets of conveyor motors are respectively connected to the rotating shafts inside the two sets of discharge pipes.

[0008] As a further embodiment of the present invention: a rotary motor is fixedly connected to the bottom of the mounting plate, the output end of the rotary motor passes through the mounting plate and is fixedly connected to a transmission gear, and a gear ring is fixedly connected to the outer wall of the rotating sleeve, the gear ring meshing with the transmission gear.

[0009] As a further embodiment of the present invention: a funnel is fixedly connected to the top of the rotating sleeve, one end of the two sets of discharge pipes is located inside the funnel, and a discharge pipe is fixedly connected to the bottom of the mounting plate, the discharge pipe being connected to the rotating sleeve.

[0010] As a further aspect of the present invention: a pusher cylinder is fixedly connected to one side of the top of the base, and the output end of the pusher cylinder is connected to one side of the receiving box.

[0011] As a further embodiment of the present invention: a fixing plate is fixedly connected to one side of the support frame, an adjusting rod is threadedly connected to the fixing plate, and a scraper is rotatably connected to the bottom of the adjusting rod.

[0012] As a further embodiment of the present invention: the rolling component includes two sets of lead screws, which are rotatably connected to the base respectively. Each set of lead screws is threaded with a slider, and a movable frame is fixedly connected to both sets of sliders. A hydraulic cylinder is fixedly connected to the top of the movable frame, and the output end of the hydraulic cylinder passes through the movable frame and is fixedly connected to a rolling roller.

[0013] As a further embodiment of the present invention: a stirring motor is fixedly connected to the bottom of the material cylinder, the output end of the stirring motor passes through the material cylinder and is fixedly connected to a stirring rod, a heat insulation cover is fitted on the outer wall of the material cylinder, and a heating plate is provided inside the heat insulation cover.

[0014] The beneficial effects of this invention are:

[0015] In this invention, new and old asphalt are discharged and impacted together through two sets of discharge pipes, and then fused together by rotating and swinging through the spiral groove inside the rotating sleeve. After fusion, the asphalt falls into the receiving box and is then crushed by the rolling roller to test its strength. This facilitates the subsequent adjustment of the mixing ratio of new and old asphalt, reducing the waste of old asphalt while maintaining the strength of new asphalt and improving utilization efficiency. Attached Figure Description

[0016] The invention will now be further described with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a top view of the base structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the internal structure of the support frame in this invention;

[0020] Figure 4 This is a schematic diagram of the internal structure of the material cylinder in this invention.

[0021] In the diagram: 1. Base; 101. Limiting plate; 2. Receiving box; 3. Support frame; 301. Mounting plate; 4. Material cylinder; 401. Mixing motor; 402. Mixing rod; 403. Insulation cover; 404. Heating plate; 5. Discharge pipe; 501. Rotating shaft; 502. Conveyor belt; 503. Conveyor motor; 6. Rotating sleeve; 601. Spiral groove; 602. Gear ring; 603. Rotary motor; 604. Transmission gear; 605. Funnel; 606. Discharge pipe; 7. Rolling component; 701. Lead screw; 702. Slider; 703. Moving frame; 704. Hydraulic cylinder; 705. Rolling roller; 8. Fixing plate; 801. Adjusting rod; 802. Scraper; 9. Pushing cylinder. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] like Figures 1-4As shown, the asphalt mixture compaction equipment includes a base 1 and a receiving box 2 for receiving the mixture of new and old asphalt. A support frame 3 and a compaction component 7 for testing the compaction strength of the new and old asphalt are installed on the top of the base 1. Two sets of material cylinders 4, each holding new and old asphalt, are fixedly connected inside the top of the support frame 3. Two sets of discharge pipes 5 are connected to the bottom of the material cylinders 4 to discharge the new and old asphalt. The ends of the two sets of discharge pipes 5 away from the material cylinders 4 are inclined and opposite to each other, so that the discharged new and old asphalt collide and fuse as they flow out of the discharge pipes 5. The support frame 3 is fixedly connected to... Mounting plate 301, with rotating sleeve 6 rotatably connected in the middle of mounting plate 301. Rotating sleeve 6 is located in the middle of the opposite ends of two sets of discharge pipes 5, receiving the new and old asphalt after impact and fusion, and then falling into rotating sleeve 6. Through the spiral groove 601 opened in the inner wall of rotating sleeve 6, the fused new and old asphalt is further swirled and fused. Rotary motor 603 is fixedly connected to the bottom of mounting plate 301. The output end of rotary motor 603 passes through mounting plate 301 and is fixedly connected to transmission gear 604. Gear ring 602 is fixedly connected to the outer wall of rotating sleeve 6, and gear ring 602 meshes with transmission gear 604.

[0024] like Figure 1 and Figure 3 As shown, in order to increase the flow speed of new and old asphalt in the two sets of discharge pipes 5, two sets of rotating shafts 501 are rotatably connected inside the two sets of discharge pipes 5. A conveyor belt 502 is rotatably connected to the outer wall of the rotating shaft 501. A conveyor motor 503 is fixedly connected to the outer wall of the two sets of discharge pipes 5. The two sets of conveyor motors 503 are respectively connected to the rotating shafts 501 inside the two sets of discharge pipes 5.

[0025] In the above process, the new and old asphalt fall onto two sets of conveyor belts 502 respectively. By starting the two sets of conveyor motors 503, the two sets of conveyor motors 503 drive the two sets of rotating shafts 501 to rotate. The two sets of rotating shafts 501 drive the two sets of conveyor belts 502 to rotate, thereby accelerating the new and old asphalt falling onto the two sets of conveyor belts 502. Then, when the asphalt flows out from the outlet of the low-cost discharge pipe 5, the impact force of the outflow is increased.

[0026] like Figure 1 and Figure 3 As shown, in order to avoid the splashing of new and old asphalt, a funnel 605 is fixedly connected to the top of the rotating sleeve 6. The opposite ends of the two sets of discharge pipes 5 are located inside the funnel 605. A discharge pipe 606 is fixedly connected to the bottom of the mounting plate 301. The discharge pipe 606 is connected to the rotating sleeve 6.

[0027] In the above, the funnel 605 shields the new and old asphalt flowing out of the two sets of discharge pipes 5 from impact, preventing them from mixing and splashing everywhere. At the same time, the discharge pipe 606 protects the new and old asphalt thrown out of the rotating sleeve 6.

[0028] like Figure 1 , Figure 3 and Figure 4 As shown, in order to level the mixture of new and old asphalt in the receiving box 2, a pusher cylinder 9 is fixedly connected to one side of the top of the base 1. The output end of the pusher cylinder 9 is connected to one side of the receiving box 2. Two sets of limiting plates 101 are fixedly connected to the top of the base 1. The two sets of limiting plates 101 are respectively attached to the two sides of the receiving box 2. A fixing plate 8 is fixedly connected to one side of the support frame 3. An adjusting rod 801 is threadedly connected to the fixing plate 8. A scraper 802 is rotatably connected to the bottom of the adjusting rod 801.

[0029] In the above process, the adjusting rod 801 is rotated on the fixed plate 8 to move up and down, thereby driving the scraper 802 at the bottom to move parallel to the height of the receiving box 2. Then, the pushing cylinder 9 is activated, which drives the receiving box 2 to move back and forth, passing through the bottom of the scraper 802, so that the scraper 802 can scrape the new and old asphalt on the receiving box 2.

[0030] like Figure 1 and Figure 2 As shown, the aforementioned rolling component 7 includes two sets of lead screws 701, which are rotatably connected to the base 1. The base 1 is provided with a drive source that is connected to the two sets of lead screws 701 respectively. Each set of lead screws 701 is threaded with a slider 702. The bottom surface of the slider 702 is in contact with the base 1 for sliding limit. At the same time, a movable frame 703 is fixedly connected to both sets of sliders 702. A hydraulic cylinder 704 is fixedly connected to the top of the movable frame 703. The output end of the hydraulic cylinder 704 passes through the movable frame 703 and is fixedly connected to a rolling roller 705. The rolling roller 705 is moved up and down by the hydraulic cylinder 704 to adjust the rolling intensity of the rolling roller 705.

[0031] like Figure 1 and Figure 4 As shown, a stirring motor 401 is fixedly connected to the bottom of the material cylinder 4. The output end of the stirring motor 401 passes through the material cylinder 4 and is fixedly connected to a stirring rod 402. A heat insulation cover 403 is fitted on the outer wall of the material cylinder 4, and a heating plate 404 is installed inside the heat insulation cover 403.

[0032] The stirring motor 401 drives the stirring rod 402 to rotate, which stirs the new and old asphalt in the material cylinder 4 to prevent the new and old asphalt from accumulating in the material cylinder 4. At the same time, the heating plate 404 in the heat insulation cover 403 heats the material cylinder 4, which improves the subsequent fusion effect of the new and old asphalt.

[0033] The working principle of this invention is as follows: When using the device, the user adds the heated and melted old asphalt and the new asphalt to be used to two sets of material cylinders 4 according to a certain ratio. The old and new asphalt in the two sets of material cylinders 4 flow onto the conveyor belts 502 in their respective bottom discharge pipes 5. The conveyor belts 502 drive the asphalt flow, causing the old and new asphalt to flow out at the outlets of the two sets of discharge pipes 5. The asphalt flowing out of the outlets of the two sets of discharge pipes 5 impacts and fuses. The fused old and new asphalt falls into the rotating sleeve 6 through the funnel 605. Then, the rotary motor 603 is started. The transmission gear 604 at the output end of the rotary motor 603 meshes with the gear ring 602, thereby driving the rotating sleeve 6 to rotate. This causes the old and new asphalt falling into the rotating sleeve 6 to be thrown into the spiral groove 601. The spiral groove 601 further agitates and fuses the old and new asphalt, improving the sufficiency of the fusion. After fusion, the old and new asphalt falls into the receiving box 2 on the base 1. The volume of the receiving box 2 determines the amount of old and new asphalt to be used. When the receiving box 2 is filled with the mixture of new and old asphalt, the pushing cylinder 9 is activated. The pushing cylinder 9 drives the receiving box 2 to slide back and forth on the base 1. While the receiving box 2 is sliding back and forth, the scraper 802 scrapes the new and old asphalt on the receiving box 2 to level it. Then, the pushing cylinder 9 sends the receiving box 2 under the rolling roller 705. Then, the hydraulic cylinder 704 is activated. The hydraulic cylinder 704 drives the rolling roller 705 to move downwards and come into contact with the new and old asphalt on the receiving box 2. According to the rolling strength requirements, pressure is applied to the new and old asphalt. Then, the slider 702 is driven to slide through the two sets of screws 701. The slider 702 drives the rolling roller 705 to move through the moving frame 703, so that the rolling roller 705 rolls on the receiving box 2 to perform moving rolling of the new and old asphalt. After rolling is completed, the strength of the cured new and old asphalt mixture can be tested, so as to adjust the ratio of new and old asphalt mixture. This reduces the waste of old asphalt while maintaining the strength of new asphalt and improving utilization efficiency.

[0034] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A compaction device for asphalt mixtures, comprising a base (1) and a receiving box (2), characterized in that, The base (1) is provided with a support frame (3) and a rolling component (7) on the top. Two sets of material cylinders (4) are fixedly connected inside the top of the support frame (3). The bottom of the two sets of material cylinders (4) are respectively connected to discharge pipes (5). The ends of the two sets of discharge pipes (5) away from the material cylinders (4) are inclined and opposite to each other. An installation plate (301) is fixedly connected inside the support frame (3). A rotating sleeve (6) is rotatably connected in the middle of the installation plate (301). The rotating sleeve (6) is located in the middle of the opposite ends of the two sets of discharge pipes (5). A spiral groove (601) is opened on the inner wall of the rotating sleeve (6). The top of the rotating sleeve (6) is fixedly connected to a funnel (605), and the opposite ends of the two sets of discharge pipes (5) are located inside the funnel (605). The bottom of the mounting plate (301) is fixedly connected to a discharge pipe (606), and the discharge pipe (606) is connected to the rotating sleeve (6). A pusher cylinder (9) is fixedly connected to one side of the top of the base (1), and the output end of the pusher cylinder (9) is connected to one side of the receiving box (2). A fixing plate (8) is fixedly connected to one side of the support frame (3), and an adjusting rod (801) is threadedly connected to the fixing plate (8). A scraper (802) is rotatably connected to the bottom of the adjusting rod (801). The rolling component (7) includes two sets of lead screws (701), which are rotatably connected to the base (1). Each set of lead screws (701) is threaded with a slider (702). A movable frame (703) is fixedly connected to both sets of sliders (702). A hydraulic cylinder (704) is fixedly connected to the top of the movable frame (703). The output end of the hydraulic cylinder (704) passes through the movable frame (703) and is fixedly connected to a rolling roller (705).

2. The asphalt mixture compaction equipment according to claim 1, characterized in that, Two sets of rotating shafts (501) are rotatably connected inside the two sets of discharge pipes (5). A conveyor belt (502) is rotatably connected to the outer wall of the rotating shaft (501). A conveyor motor (503) is fixedly connected to the outer wall of the two sets of discharge pipes (5). The two sets of conveyor motors (503) are respectively connected to the rotating shafts (501) inside the two sets of discharge pipes (5).

3. The asphalt mixture compaction equipment according to claim 1, characterized in that, A rotary motor (603) is fixedly connected to the bottom of the mounting plate (301). The output end of the rotary motor (603) passes through the mounting plate (301) and is fixedly connected to a transmission gear (604). A gear ring (602) is fixedly connected to the outer wall of the rotating sleeve (6). The gear ring (602) meshes with the transmission gear (604).

4. The asphalt mixture compaction equipment according to claim 1, characterized in that, The bottom of the material cylinder (4) is fixedly connected to a stirring motor (401). The output end of the stirring motor (401) passes through the material cylinder (4) and is fixedly connected to a stirring rod (402). The outer wall of the material cylinder (4) is fitted with a heat insulation cover (403), and a heating plate (404) is provided inside the heat insulation cover (403).

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