Fine sandy roadbed filling auxiliary device and method
The leveling and material conveying units of the fine sand roadbed filling auxiliary device solved the problem of poor roadbed flatness caused by fine sand falling off the pressure roller, and achieved efficient leveling and convenient construction of the roadbed.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- JIANGSU LEIWEI CONSTRUCT ENG CO LTD
- Filing Date
- 2024-04-24
- Publication Date
- 2026-06-26
AI Technical Summary
During the filling process of fine sand roadbed, the fine sand adhering to the roller falls onto the roadbed after roller compaction, resulting in poor flatness of the roadbed after roller compaction.
An auxiliary device for filling fine sand roadbed is adopted, including a frame, pressure roller, leveling unit, scraper, material collection and guiding unit and material transportation unit. The leveling unit levels the fine sand, the scraper scrapes the fine sand off the pressure roller, and the material collection and guiding unit and material transportation unit transport it to the front of the pressure roller to prevent the fine sand from falling off.
It improves the flatness of the roadbed roller compaction, reduces the resistance when moving auxiliary devices, and improves the convenience of re-compacting fine sand.
Smart Images
Figure CN118223363B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of roadbed engineering technology, and in particular to an auxiliary device and method for filling fine sandy roadbeds. Background Technology
[0002] Fine sand belongs to fine-grained soil sand (sand type soil), and is generally deposited on the convex banks of rivers in the middle and lower reaches. Due to different deposition times, it has obvious stratification. Its physical and mechanical properties are related to the fineness and mud content of the fine sand. In road construction, it is often used as a paving material for roadbeds.
[0003] When filling fine sandy roadbeds, it is necessary to level the fine sand and compact it repeatedly. Currently, the main method used is to compact the fine sand using rollers. During the compaction process, material will repeatedly stick to the rollers. A scraping mechanism is needed to scrape off the fine sand adhering to the rollers. However, after the material is scraped off, it will still fall onto the roadbed after roller compaction, resulting in poor flatness of the final roadbed after roller compaction. Summary of the Invention
[0004] To address the problem of fine sand falling from the adhesive roller onto the compacted roadbed, resulting in poor roadbed flatness, this application provides an auxiliary device and method for filling fine sandy roadbeds.
[0005] On the one hand, the fine sand roadbed filling auxiliary device provided in this application adopts the following technical solution:
[0006] An auxiliary device for filling fine sandy roadbed includes a frame and a pressure roller rotatably mounted on the frame. The frame has a leveling unit at the front end of the pressure roller, which guides excessive fine sand to one side of the frame in the forward direction. The leveling unit is located in front of the pressure roller. The frame has a scraper located behind the pressure roller and is used to scrape off the fine sand adhering to the pressure roller. The frame also has a material collection and guiding unit and a material conveying unit. The material collection and guiding unit is located below the scraper and is used to collect fallen fine sand and guide it into the material conveying unit. The material conveying unit is used to transport the fine sand to the front of the pressure roller.
[0007] By adopting the above technical solution, when compacting fine sand, the auxiliary device is moved onto the fine sand layer. As the vehicle frame moves, the leveling unit located in front of the vehicle frame levels the fine sand. Then, the leveled fine sand is compacted by the pressure roller. The scraper scrapes off the fine sand adhering to the pressure roller. Then, it is moved to the material conveying unit through the material collection and guiding unit, and then transported to the front of the pressure roller by the material conveying unit. This effectively prevents the fine sand adhering to the pressure roller from falling onto the roadbed after roller compaction, thereby improving the flatness of the roadbed after roller compaction.
[0008] In one specific implementation, the material conveying unit includes a guide rail and a material guide box. The guide rail is arranged circumferentially along the pressure roller, and the material guide box is disposed on the guide rail and can slide along the track of the guide rail. The material guide box is used to receive fine sand falling from the collection and conveying unit. The pressure roller and the material guide box are connected by a transmission component. The pressure roller drives the material guide box to slide back and forth along the guide rail through the transmission component, so that the fine sand in the material guide box is continuously transported to the front of the pressure roller.
[0009] By adopting the above technical solution, as the pressure roller presses the fine sand, the scraper scrapes off the fine sand and guides it into the guide box through the collection and guiding unit. The pressure roller drives the guide box to slide back and forth along the guide rail through the transmission component, so that the guide box continuously transports the scraped fine sand to the front of the pressure roller for re-crushing, thereby effectively avoiding the accumulation of scraped fine sand and improving the convenience of re-crushing the fine sand.
[0010] In one specific implementation, a rotating shaft is coaxially fixed on the pressure roller;
[0011] The transmission components include a driving gear, a drive gear, an incomplete gear, and a driven gear. The driving gear is coaxially fixed on the rotating shaft, and the drive gear is rotatably sleeved on the rotating shaft. The incomplete gear is coaxially fixed with the driven gear and rotatably mounted on the frame. The driven gear meshes with the driving gear, and the incomplete gear meshes with the drive gear. The central angle corresponding to the tooth arrangement of the incomplete gear is α. The guide box has two extreme positions on the guide rail, and the included angle between the two extreme positions is β, where 90°≤α=β≤180°. A drive rod is fixedly mounted on the drive gear, and the drive rod is connected to the guide box and drives the guide box to slide. The frame is equipped with a drive component for driving the guide box to reset.
[0012] By adopting the above technical solution, when the pressure roller rotates, the pressure roller drives the rotating shaft to rotate, the rotating shaft drives the driving gear to rotate, the driving gear drives the incomplete gear to rotate through the driven gear, the incomplete gear first drives the driving gear to rotate through the meshing of the gear teeth, the driving gear drives the guide box to move along the guide rail to the front of the pressure roller through the driving rod, so that the fine sand in the guide box can be conveyed to the front of the pressure roller and rolled again; at this time, the driving gear rotates to the toothless part of the incomplete gear, and then drives the guide box to reset through the driving component, so that the guide box can repeatedly convey the scraped fine sand.
[0013] In one specific implementation, the drive component includes a return torsion spring, which is sleeved on the rotating shaft. One end of the return torsion spring is fixedly connected to the frame, and the other end is fixedly connected to the drive gear. The return torsion spring is used to drive the drive gear to rotate toward the rear of the frame.
[0014] By adopting the above technical solution, when the incomplete gear drives the drive gear to rotate, the reset torsion spring deforms and stores elastic energy. Then, when the drive gear disengages from the teeth of the incomplete gear, the reset spring drives the drive gear to rotate in the opposite direction, causing the guide box to slide down the guide rail, which facilitates the reset of the guide box and improves the reliability of the guide box reset.
[0015] In one specific implementation, a second hydraulic cylinder is provided on the frame, the cylinder body of the second hydraulic cylinder is fixedly connected to the frame, a gear shaft is rotatably provided on the piston rod of the second hydraulic cylinder, the incomplete gear and the driven gear are both fixedly sleeved on the gear shaft, and the second hydraulic cylinder can drive the driven gear to disengage or engage with the driving gear.
[0016] By adopting the above technical solution, when the auxiliary device is reversing, the driving hydraulic cylinder drives the driven gear to disengage from the driving gear, thereby releasing the transmission between the driving gear and the driving gear. This ensures that the drive rod remains stationary when the auxiliary device is reversing, thus improving the convenience of the auxiliary device's construction.
[0017] In one specific implementation, the material collection and guiding unit includes a material guide cylinder disposed below the scraper. The top of the material guide cylinder has a discharge port, and the bottom of the material guide cylinder extends above the material guide box and has an outlet. The outlet deviates from the sliding trajectory of the material guide box.
[0018] By adopting the above technical solution, the scraper scrapes off the fine sand attached to the pressure roller, and then the sand falls into the guide cylinder from the discharge port. It then flows along the guide cylinder and flows out from the discharge port, and finally falls into the guide box, which facilitates the collection and guidance of the scraped fine sand.
[0019] In one specific implementation, a blocking plate for blocking the discharge port is slidably provided on the frame. The blocking plate is located below the guide box. The guide box squeezes the guide box, causing the discharge port to open. A telescopic spring is provided on the frame. The telescopic spring is connected to the blocking plate and is used to push the blocking plate to block the discharge port.
[0020] By adopting the above technical solution, when the guide box moves forward along the pressure roller, the telescopic spring pushes the sealing plate to seal the guide box. When the guide box resets, the guide box presses down on the sealing plate, causing the discharge port to open. This effectively prevents the fine sand in the guide cylinder from falling out when the guide box moves, thus improving the flatness of the fine sand foundation roller.
[0021] In one specific implementation, the leveling unit includes a leveling plate and a pusher. The leveling plate is vertically disposed at the bottom of the frame and is used to level the fine sand. The pusher is disposed on the leveling plate and is used to push the fine sand accumulated on the leveling plate to one side of the leveling plate.
[0022] By adopting the above technical solution, during the movement of the auxiliary device, the flat plate will scrape the fine sand laid on the foundation, and the excess fine sand will gather in front of the flat plate. Then, the material pusher will push the fine sand gathered in front of the flat plate to the side, which can reduce the resistance when the auxiliary device moves.
[0023] In one specific implementation, the pusher includes a drive chain, a drive sprocket, and a driven sprocket. The drive sprocket and the driven sprocket are respectively rotatably disposed at both ends of the flat plate in a vertical direction. The drive sprocket and the driven sprocket are connected by the drive chain. A push plate is provided on the drive chain, which can drive the push plate to slide laterally toward the flat plate. A drive motor is fixedly disposed on the flat plate, and the output shaft of the drive motor is coaxially fixedly disposed with the drive sprocket.
[0024] By adopting the above technical solution, the drive motor drives the active sprocket to rotate, the active sprocket drives the drive chain to rotate, the drive chain drives the push plate to slide, and the push plate pushes away the fine sand accumulated in front of the flat plate, effectively avoiding the accumulation of fine sand in front of the flat plate. When the push plate pushes the fine sand to move, the fine sand can fill the low-lying areas, making the foundation more flat.
[0025] On the other hand, the fine sand roadbed filling method provided in this application adopts the following technical solution:
[0026] A method for filling fine sandy roadbed, using the aforementioned fine sandy roadbed filling auxiliary device, includes the following steps:
[0027] S1. Cleaning up debris on the ground;
[0028] S2. Determine the moisture content of the fine sand, add the curing agent and mix.
[0029] S3. Lay the mixed fine sand on the road surface;
[0030] S4, Compaction: The fine sand is compacted by an auxiliary device. The fine sand is leveled by a leveling unit, then compacted by a pressure roller. The scraper removes the fine sand adhering to the pressure roller, and then the sand is moved to the conveying unit by a collection and guiding unit, and then transported to the front of the pressure roller by the conveying unit.
[0031] S5. Maintenance.
[0032] In summary, this application includes at least one of the following beneficial technical effects:
[0033] 1. When compacting fine sand, the auxiliary device moves on the fine sand, the leveling unit located in front of the frame levels the fine sand, and then the leveled fine sand is compacted by the pressure roller. The scraper scrapes off the fine sand adhering to the pressure roller, and then moves to the material conveying unit through the material collection and guiding unit. Then, the material conveying unit transports it to the front of the pressure roller, effectively preventing the fine sand adhering to the pressure roller from falling onto the roadbed after roller compaction, thereby improving the flatness of the roadbed after roller compaction.
[0034] 2. During the movement of the auxiliary device, the flat plate scrapes the fine sand laid on the foundation, and the excess fine sand gathers in front of the flat plate. Then, the push plate pushes the fine sand gathered in front of the flat plate to the side, which can reduce the resistance when the auxiliary device moves. When the push plate pushes the fine sand to move, the fine sand can fill the low-lying areas, making the foundation more flat. Attached Figure Description
[0035] Figure 1 This is a schematic diagram of the structure of an auxiliary device for filling fine sandy roadbed according to an embodiment of this application.
[0036] Figure 2 This is a structural diagram used to illustrate the leveling unit.
[0037] Figure 3 It is along Figure 2 A cross-sectional view along line AA in the middle.
[0038] Figure 4 This is a schematic diagram used to illustrate the structure of the material handling unit.
[0039] Figure 5 It is a schematic diagram used to show the included angle between the two extreme positions of the guide box.
[0040] Figure 6 It is a structural diagram used to illustrate the transmission components.
[0041] Figure 7 This is a schematic diagram used to illustrate the structure of an incomplete gear.
[0042] Explanation of reference numerals in the attached drawings: 1. Frame; 11. Wheel; 12. Scraper; 2. Pressure roller; 21. Rotating shaft; 3. Leveling unit; 31. Leveling plate; 32. Pushing component; 321. Drive chain; 322. Drive sprocket; 323. Driven sprocket; 324. Drive motor; 325. Push plate; 33. First hydraulic cylinder; 4. Material collection and guiding unit; 41. Guide cylinder; 42. Drop outlet; 43. Discharge outlet; 5. Conveying unit; 51. Guide rail; 52. 1. Sliding strip hole; 512. Guide rod; 52. Material guide box; 53. Slider; 54. Transmission component; 541. Drive gear; 542. Drive gear; 543. Incomplete gear; 544. Driven gear; 551. Mounting plate; 552. Second hydraulic cylinder; 553. Rotating bracket; 554. Gear shaft; 56. Drive rod; 57. Drive component; 571. Return torsion spring; 61. Sealing plate; 62. Support platform; 63. Telescopic spring. Detailed Implementation
[0043] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.
[0044] This application discloses an auxiliary device for filling fine sandy roadbed.
[0045] Reference Figure 1 A fine sand roadbed filling auxiliary device includes a frame 1 and a pressure roller 2 rotatably mounted on the frame 1. Two wheels 11 are rotatably connected to the front end of the frame 1. The two wheels 11 and the pressure roller 2 form the walking system of the auxiliary device. Rotating shafts 21 are coaxially fixed at both ends of the pressure roller 2. The rotating shafts 21 are rotatably connected to the frame 1 through bearings. The frame 1 is also equipped with supporting facilities such as a driver's cab.
[0046] Reference Figure 1 With the direction of the auxiliary device's forward movement as the front end, the frame 1 is equipped with a leveling unit 3, a material collection and guiding unit 4, and a material conveying unit 5. The leveling unit 3 is located at the front end of the wheel 11 and is used to guide excessive fine sand to one side of the frame 1 in the forward direction. The frame 1 is equipped with a scraper 12, which is located behind the pressure roller 2 and is set along the length of the pressure roller 2. The scraper 12 scrapes off the fine sand attached to the pressure roller 2. The material collection and guiding unit 4 is located below the scraper 12 and is used to collect the fallen fine sand and guide it into the material conveying unit 5. The material conveying unit 5 is used to transport the fine sand to the front of the pressure roller 2. The so-called front of the pressure roller 2 means that the fine sand passes over the highest point of the pressure roller 2, and then the fine sand is rolled again under the drive of the pressure roller 2.
[0047] When compacting fine sand, the auxiliary device is moved onto the fine sand layer and moves along the fine sand layer. As the frame 1 moves, the leveling unit 3 located in front of the frame 1 levels the fine sand. Then, the leveled fine sand is compacted by the pressure roller 2. The scraper 12 scrapes off the fine sand adhering to the pressure roller 2. Then, it is moved to the material conveying unit 5 through the material collection and guiding unit 4. Then, it is transported to the front of the pressure roller 2 through the material conveying unit 5. As the pressure roller 2 rotates, it rolls the fine sand again, effectively preventing the fine sand adhering to the pressure roller 2 from falling onto the roadbed after rolling, thereby improving the flatness of the roadbed after rolling.
[0048] Reference Figure 1 , Figure 2 In this embodiment, the leveling unit 3 includes a leveling plate 31 and pushers 32. The leveling plate 31 is vertically positioned at the bottom of the frame 1. Two first hydraulic cylinders 33 are located at the bottom of the frame 1, with their cylinder bodies fixedly connected to the frame 1 and their piston rods pointing downwards. The two first hydraulic cylinders 33 are positioned along the length of the leveling plate 31, and both the leveling plate 31 and the piston rods of the two first hydraulic cylinders 33 are fixedly connected. By extending and retracting the two first hydraulic cylinders 33, the height of the leveling plate 31 can be adjusted. This height can be adjusted according to the design, thereby improving the convenience of roadbed construction. Two sets of pushers 32 are spaced vertically on the leveling plate 31 and are used to push the fine sand accumulated on the leveling plate 31 to one side of the leveling plate 31.
[0049] Reference Figure 2 , Figure 3 In this embodiment, the pusher 32 includes a drive chain 321, a drive sprocket 322, and a driven sprocket 323. The drive chain 321, drive sprocket 322, and driven sprocket 323 are rotatably mounted at both ends of the flat plate 31. The two drive sprockets 322 and the two driven sprockets 323 are connected in series by a rotating shaft, which is rotatably connected to the flat plate 31. A drive motor 324 is fixedly mounted on the top of the flat plate 31. The output shaft of the drive motor 324 is coaxially and fixedly connected to the rotating shaft on the drive sprocket 322. The drive sprocket 322 and the driven sprocket 323 are embedded in the flat plate 31. The drive sprocket 322 and the driven sprocket 323 are connected by the drive chain 321, which meshes with the drive sprocket 322 and the driven sprocket 323. The flat plate 31 has grooves for the drive chain 321 to be inserted, and each groove corresponds to one drive chain 321.
[0050] Reference Figure 2 The flat plate 31 is provided with multiple push plates 325. Each push plate 325 is arranged in the vertical direction and is fixedly connected to two drive chains 321. The multiple push plates 325 are evenly arranged around the drive chains 321. The drive chains 321 can drive the push plates 325 to slide laterally toward the flat plate 31.
[0051] During the movement of the auxiliary device, the leveling plate 31 smooths out the uneven accumulation of fine sand on the foundation. Excess fine sand gathers in front of the leveling plate 31. Then, the drive motor 324 drives the drive sprocket 322 to rotate, which in turn drives the drive chain 321 to rotate. The drive chain 321 drives the push plate 325 to slide, pushing away the accumulated fine sand in front of the leveling plate 31 and pushing it laterally, thus reducing the resistance during the movement of the auxiliary device. As the push plate 325 moves the fine sand, it fills in low-lying areas, making the foundation more compacted.
[0052] Reference Figure 4 , Figure 5 In this embodiment, the material conveying unit 5 includes a guide rail 51 and a guide box 52. There are two guide rails 51, which are arranged parallel to each other at both ends of the pressure roller 2. Each guide rail 51 is arranged along the circumference of the pressure roller 2, and the rotation axis of the guide rail 51 is collinear with the axis of the pressure roller 2. In this embodiment, the material collection and guiding unit 4 includes a guide cylinder 41, which is fixedly arranged on the two guide rails 51 and located below the scraper 12. The guide cylinder 41 is arranged along the length direction of the scraper 12. The top of the guide cylinder 41 is provided with a discharge port 42, and the bottom of the guide cylinder 41 bends and extends away from the pressure roller 2 and is provided with a discharge port 43.
[0053] Reference Figure 4 , Figure 5 The guide rail 51 is also provided with a sliding strip hole 511, which penetrates the opposite side walls of the guide rail 51 along the axial direction of the pressure roller 2. The two ends of the sliding strip hole 511 are blind ends. Both ends of the guide box 52 are provided with sliders 53, and the two sliders 53 are respectively inserted into the sliding strip hole 511 on the same side. The guide rail 51 is provided with a guide rod 512, which corresponds one-to-one with the sliding strip hole 511 and is set in the sliding strip hole 511 along the length direction of the sliding strip hole 511. The guide rod 512 passes through the slider 53 and is slidably connected to the slider 53. Since the two ends of the sliding strip hole 511 are blind ends, the slider 53 has two extreme sliding positions in the sliding strip hole 511. One extreme position of the slider 53 is in front of the highest point of the pressure roller 2, and the other extreme position is below the discharge port 43, and the included angle between the two extreme positions is β.
[0054] Reference Figure 6The pressure roller 2 and the guide box 52 are connected by a transmission component 54. In this embodiment, the transmission component 54 includes a drive gear 541, a driving gear 542, an incomplete gear 543, and a driven gear 544. The drive gear 541 is coaxially fixed on the rotating shaft 21, and the driving gear 542 is rotatably sleeved on the rotating shaft 21. A mounting plate 551 is fixed on the frame 1. The mounting plate 551 is displaced within the horizontal plane where the axis of the pressure roller 2 is located. A second hydraulic cylinder 552 is provided on the mounting plate 551. The cylinder body of the second hydraulic cylinder 552... The piston rod of the second hydraulic cylinder 552 is fixedly connected to the mounting plate 551 and faces the rotating shaft 21. A rotating bracket 553 is fixedly mounted on the piston rod of the second hydraulic cylinder 552. A gear shaft 554 is provided on the rotating bracket 553 along the axial direction of the rotating shaft 21. The gear shaft 554 is rotatably connected to the rotating bracket 553. The incomplete gear 543 and the driven gear 544 are both coaxially fixedly mounted on the gear shaft 554. The incomplete gear 543 meshes with the driving gear 542, and the driven gear 544 meshes with the driving gear 541.
[0055] Reference Figure 7 The central angle corresponding to the tooth arrangement range of the incomplete gear 543 is α, 90°≤α=β≤180°. In this embodiment, α=β=135° is selected. A drive rod 56 is fixedly provided on the drive gear 542. The drive rod 56 is located on the side of the drive gear 542 away from the driving gear 541. The drive rod 56 is arranged along the radial direction of the drive gear 542. The end of the drive rod 56 away from the drive gear 542 is fixedly connected to the slider 53. A drive component 57 for driving the guide box 52 to reset is provided on the frame 1.
[0056] Reference Figure 6 In this embodiment, the driving component 57 includes a reset torsion spring 571, which is sleeved on the rotating shaft 21. One end of the reset torsion spring 571 is fixedly connected to the frame 1, and the other end is fixedly connected to the driving gear 542. Initially, the reset torsion spring 571 applies an initial elastic force to the driving gear 542 toward the rear end, so that the guide box 52 is located below the discharge port 43.
[0057] Reference Figure 4 , Figure 5 The guide cylinder 41 is provided with a support platform 62 below the discharge port 43. The support platform 62 is provided with a sealing plate 61 for sealing the discharge port 43. The support platform 62 is provided with several telescopic springs 63. One end of the telescopic spring 63 is fixedly connected to the bottom of the guide cylinder 41, and the other end is fixedly connected to the sealing plate 61. The sealing plate 61 slides on the end wall of the discharge port 43 of the guide cylinder 41. The sealing plate 61 is located on the sliding track of the guide box 52. The guide box 52 squeezes the sealing plate 61, so that the discharge port 43 opens. The telescopic springs 63 can push the sealing plate 61 to seal the discharge port 43.
[0058] When the auxiliary device is rolling the fine sand, the fine sand adhering to the pressure roller 2 is scraped off by the scraper 12. The scraped fine sand falls into the guide cylinder 41 through the discharge port 42 and then flows into the guide box 52 from the discharge port 43 along the guide cylinder 41. While the pressure roller 2 is rotating, it drives the drive gear 541 to rotate. The drive gear 541 drives the driven gear 544 to rotate. The driven gear 544 drives the incomplete gear 543 to rotate through the gear shaft 554. The teeth of the drive gear 542 are located in the toothless range of the incomplete gear 543. At this time, the guide box 52 receives the fine sand for a period of time below the discharge port 43. As the pressure roller 2 rotates, the drive gear 542 meshes with the incomplete gear 543. The incomplete gear 543 drives the drive gear 542 to rotate, and the drive gear 542 drives the drive rod 56 to rotate. The drive rod 56 drives the guide box 52 to slide forward of the pressure roller 2. At this time, the telescopic spring 63 pushes the sealing plate 61 to block the discharge port 43, effectively preventing the fine sand in the guide cylinder 41 from falling onto the compacted foundation and ensuring the flatness of the foundation.
[0059] The drive rod 56 moves the guide box 52 to the upper limit position of the pressure roller 2. At this time, the fine sand in the guide box 52 falls onto the pressure roller 2 and falls in front of the pressure roller 2 as the pressure roller 2 rotates. The pressure roller 2 rolls the fine sand again. When the guide box 52 moves to the upper limit position of the pressure roller 2, the drive gear 542 disengages from the gear teeth of the incomplete gear 543. At this time, the reset torsion spring 571 pushes the drive gear 542 to rotate towards the rear end. The drive rod 56 moves the guide box 52 to the lower limit position below the discharge port 43. The reset torsion spring 571 drives the drive rod 56 to rotate, which facilitates the reset of the guide box 52 and improves the reliability of the reset of the guide box 52.
[0060] When the guide box 52 moves down to below the discharge port 43, the guide box 52 presses down the sealing plate 61, causing the discharge port 43 to open. The fine sand in the guide cylinder 41 can fall into the guide box 52. Then, the above process is repeated continuously, so that the guide box 52 continuously conveys the scraped fine sand to the front of the pressure roller 2 for re-crushing, thereby effectively avoiding the accumulation of scraped fine sand and improving the convenience of re-crushing fine sand.
[0061] The implementation principle of the fine sand roadbed filling auxiliary device in this application embodiment is as follows: When compacting the fine sand, the auxiliary device is moved onto the fine sand layer. As the vehicle frame 1 moves, the leveling plate 31 located in front of the vehicle frame 1 levels the fine sand. The drive motor 324 drives the push plate 325 to slide through the drive chain 321, pushing the fine sand accumulated in front of the leveling plate 31 to the side. Then, the leveled fine sand is compacted by the pressure roller 2. The scraper 12 scrapes off the fine sand adhering to the pressure roller 2, and then the material passes through the guide cylinder 41. The material is moved into the guide box 52. Then, as the pressure roller 2 rotates, the drive gear 542 meshes with the teeth of the incomplete gear 543. The incomplete gear 543 drives the drive gear 542 to rotate, and the drive gear 542 drives the drive rod 56 to rotate. The drive rod 56 drives the guide box 52 to slide forward of the pressure roller 2, conveying the fine sand to the front of the pressure roller 2. The pressure roller 2 rolls the fine sand again, effectively preventing the fine sand adhering to the pressure roller 2 from falling onto the rolled roadbed, thereby improving the flatness of the rolled roadbed.
[0062] On the other hand, this application discloses a method for filling fine sandy roadbed.
[0063] A method for filling fine sandy roadbed, using the aforementioned fine sandy roadbed filling auxiliary device, includes the following steps:
[0064] S1. Ground debris removal. A cleaning machine is used to remove weeds, stones, and other debris from the ground, and the ground is leveled after cleaning.
[0065] S2. Determine the moisture content of the fine sand, add the curing agent and mix. The curing agent used is AT curing agent.
[0066] S3. Lay the mixed fine sand on the road surface.
[0067] S4, Compaction: An auxiliary device is used to compact the laid fine sand. The drive motor 324 drives the push plate 325 to rotate cyclically. The leveling plate 31 scrapes the uneven fine sand, and the push plate 325 pushes the fine sand accumulated in front of the leveling plate 31 to one side. Then, the leveled fine sand is compacted by the pressure roller 2. The scraper 12 scrapes off the fine sand attached to the pressure roller 2, and then guides it into the guide box 52 through the guide cylinder 41. The rotation of the pressure roller 2 drives the guide box 52 to slide back and forth along the guide rail 51. The guide box 52 transports the scraped fine sand to the front of the pressure roller 2 and drops it from the outlet of the guide box 52 to the front of the pressure roller 2. Then, the pressure roller 2 compacts the dropped fine sand.
[0068] S5. Maintenance.
[0069] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. An auxiliary device for filling fine sandy roadbed, comprising a frame (1) and a pressure roller (2) rotatably mounted on the frame (1), characterized in that: The frame (1) is provided with a leveling unit (3) at the front end of the pressure roller (2). The leveling unit (3) is used to guide excessive fine sand to one side of the frame (1) in the forward direction. The leveling unit (3) is located in front of the pressure roller (2). The frame (1) is provided with a scraper (12). The scraper (12) is located behind the pressure roller (2) and is used to scrape off the fine sand attached to the pressure roller (2). The frame (1) is provided with a material collection and guiding unit (4) and a material conveying unit (5). The material collection and guiding unit (4) is located below the scraper (12) and is used to collect the falling fine sand and guide it into the material conveying unit (5). The material conveying unit (5) is used to convey the fine sand to the front of the pressure roller (2). The material conveying unit (5) includes a guide rail (51) and a material guide box (52). The guide rail (51) is arranged around the circumference of the pressure roller (2). The material guide box (52) is arranged on the guide rail (51) and can slide along the trajectory of the guide rail (51). The material guide box (52) is used to receive the fine sand falling into the collection and material guiding unit (4). The pressure roller (2) and the material guide box (52) are connected by a transmission component (54). The pressure roller (2) drives the material guide box (52) to slide back and forth along the guide rail (51) through the transmission component (54), so that the fine sand in the material guide box (52) is continuously transported to the front of the pressure roller (2). A rotating shaft (21) is coaxially fixed on the pressure roller (2); The transmission component (54) includes a drive gear (541), a driving gear (542), an incomplete gear (543), and a driven gear (544). The drive gear (541) is coaxially fixed on the rotating shaft (21), and the driving gear (542) is rotatably sleeved on the rotating shaft (21). The incomplete gear (543) is coaxially fixed with the driven gear (544) and rotatably mounted on the frame (1). The driven gear (544) meshes with the drive gear (541), and the incomplete gear (543) meshes with the driven gear (544). 3) It meshes with the drive gear (542). The central angle corresponding to the tooth arrangement of the incomplete gear (543) is α. The guide box (52) has two extreme positions on the guide rail (51). The included angle between the two extreme positions is β, 90°≤α=β≤180°. A drive rod (56) is fixedly provided on the drive gear (542). The drive rod (56) is connected to the guide box (52) and drives the guide box (52) to slide. A drive component (57) for driving the guide box (52) to reset is provided on the frame (1).
2. The auxiliary device for filling fine sandy roadbed according to claim 1, characterized in that: The drive component (57) includes a return torsion spring (571), which is sleeved on the rotating shaft (21). One end of the return torsion spring (571) is fixedly connected to the frame (1), and the other end is fixedly connected to the drive gear (542). The return torsion spring (571) is used to drive the drive gear (542) to rotate toward the rear of the frame (1).
3. The auxiliary device for filling fine sandy roadbed according to claim 2, characterized in that: The frame (1) is provided with a second hydraulic cylinder (552). The cylinder body of the second hydraulic cylinder (552) is fixedly connected to the frame (1). A gear shaft (554) is rotatably provided on the piston rod of the second hydraulic cylinder (552). The incomplete gear (543) and the driven gear (544) are both fixedly sleeved on the gear shaft (554). The second hydraulic cylinder (552) can drive the driven gear (544) to disengage or engage with the driving gear (541).
4. The auxiliary device for filling fine sandy roadbed according to claim 1, characterized in that: The material collection and guiding unit (4) includes a material guide cylinder (41), which is located below the scraper (12). The top of the material guide cylinder (41) is provided with a discharge port (42), and the bottom of the material guide cylinder (41) extends above the material guide box (52) and is provided with a discharge port (43). The discharge port (43) is offset from the sliding trajectory of the material guide box (52).
5. The auxiliary device for filling fine sandy roadbed according to claim 4, characterized in that: A sealing plate (61) for blocking the discharge port (43) is slidably provided on the frame (1). The sealing plate (61) is located below the guide box (52). The guide box (52) squeezes the sealing plate (61) to open the discharge port (43). A telescopic spring (63) is provided on the frame (1). The telescopic spring (63) is connected to the sealing plate (61) and is used to push the sealing plate (61) to block the discharge port (43).
6. The auxiliary device for filling fine sandy roadbed according to claim 1, characterized in that: The leveling unit (3) includes a leveling plate (31) and a pusher (32). The leveling plate (31) is set vertically at the bottom of the frame (1) and is used to level the fine sand. The pusher (32) is set on the leveling plate (31) and is used to push the fine sand accumulated on the leveling plate (31) to one side of the leveling plate (31).
7. The auxiliary device for filling fine sandy roadbed according to claim 6, characterized in that: The pusher (32) includes a drive chain (321), a drive sprocket (322), and a driven sprocket (323). The drive sprocket (322) and the driven sprocket (323) are respectively rotatably disposed at both ends of the flat plate (31) in the vertical direction. The drive sprocket (322) and the driven sprocket (323) are connected by the drive chain (321). The drive chain (321) is provided with a push plate (325). The drive chain (321) can drive the push plate (325) to slide laterally toward the flat plate (31). The flat plate (31) is fixedly provided with a drive motor (324). The output shaft of the drive motor (324) is coaxially fixed with the drive sprocket (322).
8. A method for filling fine sandy roadbed, using the fine sandy roadbed filling auxiliary device described in any one of claims 1-7, characterized in that: Includes the following steps: S1. Cleaning up debris on the ground; S2. Determine the moisture content of the fine sand, add the curing agent and mix. S3. Lay the mixed fine sand on the road surface; S4. Compaction: The fine sand is compacted by using an auxiliary device. The fine sand is leveled by the leveling unit (3), and then the leveled fine sand is compacted by the pressure roller (2). The scraper (12) scrapes off the fine sand attached to the pressure roller (2), and then moves to the material conveying unit (5) through the material collection and guiding unit (4), and then is transported to the front of the pressure roller (2) through the material conveying unit (5). S5. Maintenance.