A device for reducing asphalt pavement joint segregation

Abstract

This utility model relates to a device for reducing segregation at asphalt pavement joints, comprising: a pressure roller, a mounting frame, a leveling component, and a counterweight component. The mounting frame includes two mounting rods arranged opposite each other, and the two ends of the pressure roller are rotatably connected to the two mounting rods respectively. The leveling component is mounted on the mounting frame and located on the lower side of the mounting frame near the pavement. The counterweight component is mounted on the mounting frame and is used to adjust the pressure of the pressure roller. By setting the leveling component and pressure roller on the mounting frame, the leveling component levels the accumulated material at the joint of the asphalt pavement, avoiding the formation of bulges. The leveling component ensures a smooth transition between the joint and the pavement on both sides, and prevents the temperature from dropping too quickly, which would affect the compaction effect of the subsequent pressure roller. Immediately after leveling, the pressure roller is used to quickly compact the joint, sealing off the surface temperature and ensuring that the joint is compacted.

Description

Technical Field

[0001] This utility model relates to the field of asphalt pavement paving technology, and in particular to a device for reducing segregation at asphalt pavement joints. Background Technology

[0002] In asphalt pavement construction, aggregate segregation is prone to occur at the longitudinal overlap of two pavers. The common method is to manually spread the aggregate and level it with shovels. This method causes the mixture to lose stability too quickly and cannot ensure that the temperature of the mixture meets the specifications for timely compaction, resulting in substandard asphalt pavement joints. Therefore, a device to reduce segregation at asphalt pavement joints is proposed. Utility Model Content

[0003] This invention provides a device for reducing segregation at asphalt pavement joints, which solves at least one of the aforementioned technical problems.

[0004] This utility model provides a device for reducing segregation at asphalt pavement joints, comprising: Pressure roller; The mounting frame includes two mounting rods arranged opposite each other, and the two ends of the pressure roller are rotatably connected to the two mounting rods respectively; A leveling assembly, which is mounted on the mounting frame and located on the lower side of the mounting frame near the asphalt pavement; A counterweight assembly, mounted on the mounting frame, is used to adjust the pressure of the pressure roller.

[0005] In one embodiment, the leveling assembly includes a leveling blade and an adjusting assembly, wherein the leveling blade is mounted on the mounting bracket via the adjusting assembly, so that the leveling blade can be close to the asphalt pavement.

[0006] In one embodiment, the adjustment assembly includes a mounting base, a connecting rod, an adjusting plate, and a locking member. The mounting base is provided on the side of the connecting rod near the asphalt pavement. One end of the adjusting plate near the asphalt pavement is connected to the scraper blade. The other end of the adjusting plate passes through a mounting hole on the mounting base and is fixed by the locking member provided on the mounting base.

[0007] In one embodiment, the two mounting rods are respectively provided with connecting sleeves on opposite sides, and the rotation shafts at both ends of the connecting rods are respectively inserted into the connecting sleeves on both sides, so that the connecting rods can rotate with the connecting sleeves.

[0008] In one embodiment, the system further includes multiple sets of reset components, each set of reset components including multiple fixing blocks and elastic elements. The multiple fixing blocks are respectively installed on the connecting sleeve and the connecting rod, and every two fixing blocks near the connection between the connecting sleeve and the connecting rod are connected by the elastic elements.

[0009] In one embodiment, the counterweight assembly includes a counterweight frame, a counterweight block, and positioning rods. The counterweight frame is mounted on the mounting frame and positioned above the pressure roller. The counterweight frame has multiple positioning rods, and the counterweight block passes through the positioning rods. In one embodiment, the mounting bracket includes a connecting arm for connection to a paver, the connecting arm being adjustable in length. In one embodiment, the connecting sleeve is disposed on the mounting rod on the side of the pressure roller near the connecting arm. In one embodiment, the distance between the pressure roller and the scraper blade is 0.2~0.4m.

[0010] In one embodiment, the distance between the pressure roller and the screed of the paver is 0.5~1.5m. Compared with the prior art, the advantages of this utility model are that by setting a leveling component and a pressure roller on the mounting frame, the leveling component levels the accumulated material at the joint of the asphalt pavement, avoiding the formation of bulges. The leveling component ensures a smooth transition between the joint and the asphalt pavement on both sides, and can prevent the temperature from dropping too quickly, which would affect the compaction effect of the subsequent pressure roller. After leveling, the pressure roller is immediately used to quickly compact the joint, sealing the surface temperature and ensuring that the joint is compacted. Attached Figure Description

[0011] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the installation of the pressure roller of this utility model; Figure 3 This is a schematic diagram of the leveling component of this utility model; Figure 4 This is a side view of the pressure roller and scraping assembly of this utility model; Figure label: 1. Mounting bracket; 11. Connecting arm; 12. Connecting sleeve; 2. Reset assembly; 21. Elastic element; 22. Fixing block; 3. Scraping assembly; 31. Mounting base; 310. Connecting rod; 32. Adjusting plate; 33. Scraping blade; 34. Locking element; 4. Pressure roller; 5. Counterweight assembly; 51. Positioning rod; 52. Counterweight frame. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings.

[0014] Existing methods for compacting asphalt concrete pavements, such as the device disclosed in CN218466268U for improving the compaction of longitudinal joints in asphalt concrete pavement paving, utilize compaction rollers, traction rods, and other structural designs to efficiently and automatically complete the compaction of longitudinal joints during asphalt concrete pavement paving. However, such devices lack a scraping and dispersing mechanism for the asphalt aggregate before compaction, inevitably leading to uneven temperature distribution and segregation. Furthermore, because the compaction rollers in these devices regulate pressure by internally loading iron powder, the iron powder cannot be fixed within the rollers and will move or accumulate due to inertia and vibration during rolling, resulting in localized weight concentration. This, combined with the uneven distribution of asphalt aggregate, further hinders the compaction of the asphalt at the joints, affecting the pavement construction effect. To address the problems existing in such devices, this utility model proposes a device to reduce segregation at asphalt pavement joints.

[0015] Please refer to Figure 1 A device for reducing segregation at asphalt pavement joints includes: a pressure roller 4, a mounting frame 1, a leveling component 3, and a counterweight component 5. The mounting frame 1 includes two mounting rods arranged opposite each other, and the two ends of the pressure roller 4 are rotatably connected to the two mounting rods respectively. The leveling component 3 is mounted on the mounting frame 1 and is located on the lower side of the mounting frame 1 near the asphalt pavement. The counterweight component 5 is mounted on the mounting frame 1 and is used to adjust the pressure of the pressure roller 4.

[0016] To better implement this utility model, refer to Figure 3 In one embodiment, the leveling assembly 3 includes a leveling blade 33 and an adjustment assembly. The leveling blade 33 is mounted on the mounting bracket 1 via the adjustment assembly, so that the leveling blade 33 can be close to the asphalt pavement.

[0017] Specifically, multiple pre-sparse teeth can be provided on the surface of the scraper 33 away from the pressure roller 4. When the scraper 33 performs scraping work, the pre-sparse teeth are first inserted into the accumulated material to disperse it. Then the bottom of the scraper scrapes the accumulated material. This can prevent large accumulated materials and large particles in the accumulated material from affecting the work of the scraper 33.

[0018] Specifically, the adjustment assembly includes a mounting base 31, a connecting rod 310, an adjusting plate 32, and a locking element 34. The mounting base 31 is located on the side of the connecting rod 310 closest to the asphalt pavement. One end of the adjusting plate 32 closest to the asphalt pavement is connected to the screed 33, and the other end of the adjusting plate 32 passes through a mounting hole on the mounting base 31 and is fixed by the locking element 34 on the mounting base 31. This ensures that the screed 33 is installed between the pressure roller 4 and the paver, with a distance of 0.2–0.4 m between the pressure roller 4 and the screed 33. In this embodiment, a distance of 0.8 m is preferred. The distance between the pressure roller 4 and the screed of the paver is 0.5–1.5 m. In this embodiment, a distance of 0.3 m is preferred. Loosening the locking member 34 allows the adjusting plate 32 to move within the mounting hole of the mounting base 31, thereby adjusting the height of the leveling blade 33. After adjusting the position of the leveling blade 33 by moving the adjusting plate 32, the locking member 34 is tightened again to secure the leveling blade 33. This installation method also facilitates the periodic replacement, maintenance, and cleaning of the leveling blade 33. In this embodiment, the locking member 34 is preferably a locking screw.

[0019] In order to better implement this utility model, refer to Figure 2 and Figure 3 In one embodiment, the two mounting rods are respectively provided with connecting sleeves 12 on opposite sides. The connecting sleeves 12 are provided on the mounting rods of the pressure roller 4 near the connecting arm 11. The rotating shafts at both ends of the connecting rod 310 are respectively inserted into the connecting sleeves 12 on both sides, so that the connecting rod 310 can rotate with the connecting sleeves 12.

[0020] In order to better implement this utility model, refer to Figure 2 In one embodiment, the device further includes multiple sets of reset components 2. The reset components 2 are disposed on the connecting rod 310 and connecting sleeve 12 on the opposite side of the connecting seat. Each set of reset components 2 includes multiple fixing blocks 22 and elastic elements 21. The fixing blocks 22 are respectively installed on the connecting sleeve 12 and connecting rod 310. Every two fixing blocks 22 near the connection between the connecting sleeve 12 and connecting rod 310 are connected by the elastic element 21. In this embodiment, there are two sets of reset components 2, respectively disposed at the gaps where the connecting rod 310 connects to the connecting sleeve 12. The two fixing blocks 22 of each set of reset components 2 are respectively disposed on the connecting rod 310 and connecting sleeve 12 on both sides of the gap, and are connected by the elastic element 21. The elastic element 21 is in a taut state, and its elastic force restricts the relative rotation between the connecting sleeve 12 and connecting rod 310. The elastic element 21 is detachable from the fixing blocks 22, facilitating periodic replacement of the elastic element 21. In this embodiment, the elastic element 21 is a reset spring.

[0021] Specifically, a limiting structure, such as a limiting block or a limiting pin, can be provided between the connecting sleeve 12 and the connecting rod 310. This is used to limit the rotation range between the connecting sleeve 12 and the connecting rod 310. In conjunction with the elastic element 21, the leveling blade 33 is constrained to a certain position. The elastic force of the elastic element 21 pushes the leveling blade 33 against the joint of the asphalt pavement, leveling the accumulated material at the joint. If a large protrusion occurs and the accumulated material cannot be leveled quickly, the leveling blade 33 will be squeezed by the protrusion. The leveling blade 33 will swing to avoid the protrusion, thereby deforming the elastic element 21. The pressure roller 4 will then directly crush the protrusion, preventing the leveling blade 33 from getting stuck or jumping out and causing damage to the asphalt pavement.

[0022] In order to better implement this utility model, refer to Figure 1 In one embodiment, the counterweight assembly 5 includes a counterweight frame 52, counterweight blocks, and positioning rods 51. The counterweight frame 52 is mounted on the mounting frame 1 and positioned above the pressure roller 4. Multiple positioning rods 51 are provided on the counterweight frame 52, and counterweight blocks are threaded through the positioning rods 51 to prevent the counterweight blocks from falling off. The number of counterweight blocks is adjustable, thereby allowing adjustment of the pressure of the pressure roller 4 on the accumulated material at the joints of the asphalt pavement.

[0023] Specifically, the positioning rod 51 can be set as a threaded rod. After the counterweight is inserted into the positioning rod 51, a nut is set at the top of the positioning rod 51. The nut is engaged with the external thread of the positioning rod 51 to fix the counterweight and prevent it from falling off. In order to better implement this utility model, refer to Figure 1 In one embodiment, the mounting frame 1 includes a connecting arm 11 for connection to a paver, the connecting arm 11 being adjustable in length. The connecting arm 11 is connected to two mounting rods, which can be achieved by connecting one end of the two mounting rods via a connecting shaft, and then connecting the connecting arm 11 to the connecting shaft, so that the mounting frame 1 formed by the connecting arm 11 and the two mounting rods has a "Y"-shaped structure. A rotatable pressure roller 4 and a connecting rod 310 are installed between the two mounting rods at the open end of the "Y". In this embodiment, it is preferable that one end of the connecting arm 11 is hinged to the connecting shaft between the two mounting rods, and the other end of the connecting arm 11 is hinged to the traction beam of the paver. Both the connecting arm 11 and the mounting frame 1 are inclined.

[0024] Specifically, the connecting arm 11 includes a sleeve and a short rod. The short rod is connected to two mounting rods, and the sleeve is fitted onto the short rod. The sleeve and the short rod are detachably connected by a threaded or pin-hole structure, thereby realizing the length adjustment of the connecting arm 11.

[0025] To better implement this utility model, in this embodiment, a scraper is installed on the side of the connecting sleeve 12 near the pressure roller 4. The scraper is used to scrape off the asphalt adhering to the surface of the pressure roller 4.

[0026] The working principle of the device for reducing segregation at asphalt pavement joints described above is as follows: During asphalt pavement paving, two pavers work in a team, and this device is used to treat the longitudinal joints. The device is mounted behind the paver, with a leveling blade 33 and a pressure roller 4 spanning the joint area and moving with the paver. While the paver is working, the leveling blade 33 smooths the accumulated material at the joint, followed by the pressure roller 4 quickly compacting the joint to retain heat. This overcomes the limitations of traditional segmented operations, completing timely compaction of the joint during the optimal temperature window of the paving mixture, sealing the surface temperature and reducing temperature segregation at the joint.

[0027] Although the present invention has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An apparatus for reducing asphalt pavement joint segregation, comprising: include: Pressure roller; The mounting frame includes two mounting rods arranged opposite each other, and the two ends of the pressure roller are rotatably connected to the two mounting rods respectively; A leveling assembly, which is mounted on the mounting frame and located on the lower side of the mounting frame near the asphalt pavement; A counterweight assembly, mounted on the mounting frame, is used to adjust the pressure of the pressure roller.

2. The apparatus of claim 1, wherein, The leveling assembly includes a leveling blade and an adjusting component. The leveling blade is mounted on the mounting bracket via the adjusting component, allowing the leveling blade to be close to the asphalt pavement.

3. The apparatus of claim 2, wherein, The adjustment assembly includes a mounting base, a connecting rod, an adjusting plate, and a locking element. The mounting base is provided on the side of the connecting rod closest to the asphalt pavement. One end of the adjusting plate closest to the asphalt pavement is connected to the scraper blade. The other end of the adjusting plate passes through the mounting hole on the mounting base and is fixed by the locking element provided on the mounting base.

4. The apparatus of claim 3, wherein, Each of the two mounting rods is provided with a connecting sleeve on its opposite side. The rotating shafts at both ends of the connecting rod are inserted into the connecting sleeves on both sides, so that the connecting rod can rotate with the connecting sleeve.

5. The apparatus of claim 4, wherein, It also includes multiple sets of reset components, each set of reset components including multiple fixing blocks and elastic elements. The multiple fixing blocks are respectively installed on the connecting sleeve and the connecting rod, and every two fixing blocks near the connection between the connecting sleeve and the connecting rod are connected by the elastic elements.

6. The apparatus of claim 5, wherein, The counterweight assembly includes a counterweight frame, a counterweight block, and positioning rods. The counterweight frame is mounted on the mounting frame and positioned above the pressure roller. The counterweight frame has multiple positioning rods, and the counterweight block passes through the positioning rods.

7. The apparatus of claim 1 or 6, wherein, The mounting bracket includes a connecting arm for connection to a paver, the connecting arm being adjustable in length.

8. The apparatus of claim 7, wherein, The connecting sleeve is disposed on the mounting rod on the side of the pressure roller near the connecting arm.

9. The apparatus of claim 6, wherein, The distance between the pressure roller and the scraper blade is 0.2 to 0.4 m.

10. The apparatus of claim 7, wherein, The distance between the pressure roller and the screed of the paver is 0.5 to 1.5 m.

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