An asphalt mixture rolling device for pavement laying and a compaction method thereof

Abstract

This invention discloses an asphalt mixture compaction device and its compaction method for road paving, belonging to the field of asphalt pavement paving technology. The compaction method includes the following steps: S1, sliding the outer sleeve onto the inner wall of the manhole, so that the mounting bracket assembly is attached to the foundation pavement at the end of the manhole; S2, sliding the inner sleeve onto the inner wall of the outer sleeve, so that the return spring is located within the rectangular through groove; S3, adjusting the position of the annular mounting plate on the inner wall of the inner sleeve by rotating the screw, so that the upper surface of the end plate is flush with the pavement after the asphalt mixture is laid; S4, filling the area outside the manhole cover installation area with asphalt mixture, and then repeatedly compacting the manhole cover installation area and the asphalt mixture filling area using a road roller. This technical solution aims to solve the problems of low pavement paving efficiency and poor manhole cover installation effect caused by the layout of road manholes.

Description

Technical Field

[0001] This invention belongs to the field of asphalt pavement paving technology, specifically relating to an asphalt mixture compaction device and its compaction method for pavement paving. Background Technology

[0002] In existing technologies, asphalt pavement is typically laid using compaction devices. The purpose of compaction is to increase the density of the asphalt mixture, thereby improving the pavement's strength, high-temperature resistance to shearing, and fatigue resistance, among other road performance characteristics. It is another key process in forming high-quality asphalt concrete pavement.

[0003] During road paving, numerous manholes exist on the road surface, making it impossible for rollers and other equipment to compact the asphalt mixture within these areas. To prevent asphalt mixture from entering the manholes, they need to be protected. Current technology typically uses covers to shield the manholes. However, after the asphalt pavement is completed, the asphalt concrete above the manhole opening needs to be cleaned to create an area for the manhole cover installation. This area is usually a ring-shaped region, and the manhole cover mounting base needs to be compacted and embedded within the road surface. The installation area after the mounting base is installed is relatively narrow, requiring manual compaction of the asphalt mixture to achieve the manhole cover installation. The inventor believes that the existing manhole cover installation methods and the cleaning steps for the installation area are extremely cumbersome, affecting not only the efficiency of road paving but also making it difficult to guarantee the installation effect of the manhole cover. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide an asphalt mixture compaction device and a compaction method for road paving, so as to solve the problems of low road paving efficiency and poor manhole cover installation effect caused by the arrangement of road manholes when using asphalt mixtures for road paving in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] This invention discloses an asphalt mixture compaction device and its compaction method for road paving. The asphalt mixture compaction device is installed in a manhole on an asphalt mixture paved road and includes an outer sleeve that matches the inner wall of the manhole. The outer side of the outer sleeve is slidably connected to the inner wall of the manhole. The upper end of the outer sleeve is provided with a hooking boss assembly. The inner wall of the outer sleeve is provided with an inner sleeve that is slidably connected to it. The outer wall of the inner sleeve is in contact with the inner wall of the outer sleeve. The upper end of the inner sleeve is provided with an end plate, which is fixedly connected to the end of the inner sleeve. The outer edge of the lower surface of the end plate is provided with an annular limiting compaction assembly. The upper end of the annular limiting compaction assembly is fixed to the end plate. A sliding gap is provided between the annular limiting compaction assembly and the inner sleeve to facilitate the sliding of the hooking boss assembly.

[0007] The annular limiting and compaction assembly includes an outer annular plate, one end of which is fixed to an end plate. An L-shaped annular plate with an L-shaped cross-section is provided on the outer surface edge of the outer annular plate. One side of the L-shaped annular plate is slidably connected to the outer surface of the outer annular plate, and the other side of the L-shaped annular plate is located directly below the end plate, and has several annularly distributed connecting springs thereon. One end of each connecting spring is fixed to the L-shaped annular plate, and the other end is fixed to the lower surface of the end plate. An inner annular plate is also provided on the end plate, one end of which is fixed to the end plate and parallel to the outer annular plate. The other end of the inner annular plate is flush with the other end of the outer annular plate. A scraper component is provided at the end of the side of the L-shaped annular plate that is slidably connected to the outer annular plate, and the outer surface of the scraper component is flush with the outer surface of the L-shaped annular plate.

[0008] The lower end of the outer annular plate is provided with an outer retaining ring, and the end of the L-shaped annular plate that is slidably connected to the outer annular plate is provided with an inner retaining ring; the inner side of the lower end of the outer sleeve is provided with a detachably connected annular mounting plate, and a plurality of return springs are evenly distributed in a ring on the annular mounting plate; the side wall of the inner sleeve is provided with a plurality of rectangular through slots that match the return springs; one end of the return spring is fixed to the annular mounting plate, and the other end of the return spring abuts against the end of the rectangular through slot or the lower end face of the inner sleeve; the outer side of the annular mounting plate is slidably connected to the inner wall of the outer sleeve; the lower end face of the outer sleeve is provided with a plurality of annularly distributed connecting blocks; the connecting blocks are provided with threaded holes, and a matching screw is provided in the threaded holes; the end of the screw is rotatably connected to the annular mounting plate; the hanging boss assembly includes a plurality of annularly arranged protrusions, and the side of the protrusions facing the upper end of the outer sleeve is provided with an inverted V-shaped block.

[0009] This compaction method includes a method for compacting asphalt mixture at the junction of the asphalt pavement and the manhole cover installation area, and the method includes the following steps:

[0010] S1. Slide the outer sleeve onto the inner wall of the shaft so that the mounting boss assembly is attached to the foundation road surface at the end of the shaft.

[0011] S2. Slide the inner sleeve onto the inner wall of the outer sleeve so that the return spring is located in the rectangular through groove;

[0012] S3. By rotating the screw, adjust the position of the annular mounting plate on the inner wall of the inner sleeve so that the upper surface of the end plate is flush with the road surface after the asphalt mixture is laid.

[0013] S4. Fill the area outside the manhole cover installation area with asphalt mixture, and then use a road roller to repeatedly compact the area between the manhole cover installation area and the asphalt mixture filling area.

[0014] It also includes a method for compacting the asphalt mixture within the manhole cover installation area, implemented after step S4, which includes the following steps:

[0015] S5. Pull the inner sleeve upward and rotate it so that the return spring disengages from the rectangular through groove and abuts against the end of the inner sleeve.

[0016] S6. Then fill the manhole cover installation area with asphalt mixture, and squeeze the asphalt mixture in the manhole cover installation area by applying intermittent load to the end plate and causing it to move downward.

[0017] S7. When the asphalt mixture in the manhole cover installation area is compacted to the installation height of the manhole cover mounting seat, lift the inner sleeve and outer sleeve upwards and put the manhole cover mounting seat into the installation area;

[0018] S8. Insert the inner sleeve and outer sleeve, so that the hooking boss assembly of the outer sleeve is hooked onto the upper end of the manhole cover mounting base.

[0019] S9. Repeat step S6 until the asphalt mixture in the manhole cover installation area is flush with the road surface.

[0020] The beneficial effects of this invention are as follows:

[0021] (1) The structure of this device is simple. When the asphalt mixture is laid, the area for manhole cover installation can be reserved to avoid the asphalt mixture covering the manhole cover installation area. At the same time, when installing the manhole cover mounting seat, the asphalt mixture in the installation area can be compacted to ensure the installation effect of the manhole cover and simplify the installation steps of the manhole cover.

[0022] (2) The setting of connecting spring, L-shaped ring plate and outer ring plate allows the roller to contact the end plate when it compacts the asphalt mixture. Under the action of the roller, the end plate will squeeze the connecting spring, thereby causing the end plate to move down. This will match the height of the asphalt mixture after it is compacted, and thus make the asphalt mixture outside the manhole cover installation area more compact.

[0023] (3) The setting of the reset spring and the rectangular through groove can switch the working mode of this device. When the reset spring 4 is located in the rectangular through groove, the relative height of the two ends is low, so that the end plate can be flush with the asphalt mixture paving road surface, which is used to enclose and reserve the manhole cover installation area. When the inner sleeve is lifted and rotated, the lower edge of the inner sleeve contacts the reset spring. At this time, the distance between the two ends is large. At this time, during the gap of the applied load, the inner sleeve will rebound under the action of the reset spring, which is convenient for adding asphalt mixture to the installation area for compaction.

[0024] Other advantages, objectives, and features of the invention will be set forth in the following description and will be apparent to those skilled in the art in some respects, or may be learned by practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0025] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the following figures are provided for illustration:

[0026] Figure 1 This is a perspective view of the asphalt mixture compaction device of the present invention used in the installation area of ​​a reserved manhole cover.

[0027] Figure 2 This is a three-dimensional schematic diagram of the connection between the inner sleeve and the annular limiting compaction component in the asphalt mixture compaction device of the present invention.

[0028] Figure 3 This is a three-dimensional schematic diagram of a return spring installed inside the outer sleeve of the asphalt mixture compaction device of the present invention;

[0029] Figure 4 This is a perspective view of the asphalt mixture compaction device of the present invention used for compacting asphalt mixture in the installation area.

[0030] Figure 5 This is a perspective view of the connection between the inner sleeve and the annular limiting compaction component in the asphalt mixture compaction device of the present invention.

[0031] Figure 6 This is a perspective view of a reset spring installed inside the outer sleeve of the asphalt mixture compaction device of the present invention.

[0032] Figure 7 This is a schematic cross-sectional view of the asphalt mixture compaction device of the present invention used in the installation area of ​​a reserved manhole cover.

[0033] Figure 8This is a schematic cross-sectional view of the asphalt mixture compaction device of the present invention when it is used to compact asphalt mixture in the installation area.

[0034] The following labels are shown in the attached diagram:

[0035] 1. Outer sleeve, 2. Annular limiting and compaction component, 3. Annular mounting plate, 4. Reset spring, 5. Inner sleeve, 6. Rectangular through groove, 7. End plate, 8. Outer annular plate, 9. L-shaped annular plate, 10. Connecting spring, 11. Inner annular plate, 12. Foundation, 13. Asphalt mixture, 14. Manhole cover mounting base. Detailed Implementation

[0036] like Figures 1-8 As shown, this invention discloses an asphalt mixture compaction device and its compaction method for road paving. The asphalt mixture compaction device is installed inside a manhole on the road paved with asphalt mixture 13, and includes an outer sleeve 1 that matches the inner wall of the manhole. The outer sleeve 1 can be understood as a hollow steel pipe that descends directly to match the inner wall of the manhole. The outer side of the outer sleeve 1 is slidably connected to the inner wall of the manhole. The upper end of the outer sleeve 1 is provided with a hanging boss assembly. The purpose of the hanging boss assembly is to prevent the outer sleeve 1 from sliding into the manhole. The inner wall of the outer sleeve 1 is provided with a corresponding... The inner sleeve 5 is a hollow steel pipe with a diameter matching that of the outer sleeve 1. The outer wall of the inner sleeve 5 is in contact with the inner wall of the outer sleeve 1. The upper end of the inner sleeve 5 is provided with an end plate 7. The shape of the end plate 7 is preferably the same as that of the well cover. The end plate 7 is fixedly connected to the end of the inner sleeve 5. The outer edge of the lower surface of the end plate 7 is provided with an annular limiting and compacting component 2. The upper end of the annular limiting and compacting component 2 is fixed on the end plate 7. A sliding gap is provided between the annular limiting and compacting component and the inner sleeve 5 to facilitate the sliding of the mounting boss component.

[0037] The working principle of the above technical solution is as follows: When using asphalt mixture 13 to pave the road surface, when paving near the manhole, firstly, the outer sleeve 1 is placed inside the manhole, so that the hook-on boss assembly is hooked onto the paved foundation 12. Then, the inner sleeve 5 is slidably placed inside the outer sleeve 1. At this time, under the action of gravity, the annular limiting compaction assembly 2 contacts the foundation 12. Under the action of the annular limiting compaction assembly 2 and the end plate 7, the area for manhole cover installation can be reserved. Later, only the outer sleeve 1 and the inner sleeve 5 need to be removed to realize the installation of the manhole cover. During installation, the manhole cover mounting base needs to be placed in this area first. Then, the asphalt mixture 13 is filled and compacted to fix the manhole cover mounting base 14. When compacting the asphalt mixture 13, it is only necessary to remove the inner sleeve 5 and then fill the upper part of the manhole cover mounting base 14 with the asphalt mixture 13. After the filling is completed, the inner sleeve 5 is installed again. After installation, it is only necessary to apply a load to the end cover, that is, the annular limiting compaction component 2 can compact the concrete in the installation area, thereby fixing the manhole cover mounting base 14 (in this embodiment, it can be understood that the annular limiting compaction component 2 can be a rectangular hollow steel pipe that is annularly set and can fill the installation area).

[0038] In one feasible embodiment, in order to improve the compaction of the asphalt mixture 13 adjacent to the manhole cover installation area, preferably, the annular limiting compaction component 2 includes an outer annular plate 8, one end of which is fixed to the end plate 7. An L-shaped annular plate 9 with an L-shaped cross-section is provided on the outer surface edge of the outer annular plate 8. One side of the L-shaped annular plate 9 is slidably connected to the outer surface of the outer annular plate 8, and the other side of the L-shaped annular plate 9 is located directly below the end plate 7, and is provided with a plurality of annularly distributed connecting springs 10. In this specific embodiment, the number of connecting springs 10 is 8. One end of the connecting spring 10 is fixed to the L-shaped annular plate 9, and the other end is fixed to the lower surface of the end plate 7.

[0039] The working principle of the aforementioned annular limiting compaction component 2 is as follows: When the asphalt mixture 13 is used for paving the road surface, the outer sleeve 1 and inner sleeve 5 can be pre-installed on the manhole. Under the action of the connecting spring 10, the L-shaped annular plate 9 will extend downwards, that is, contact the surface of the foundation 12, and at the same time, it can also support the end cap. Preferably, after installation, the position of the end cap is at the same height as the road surface after the asphalt mixture 13 is paved. The advantage of this setting method is that when the road roller compacts the asphalt mixture 13, it will contact the end plate 7. The end plate 7, under the action of the road roller, will contact the end plate 7. When the end plate 7 is lowered, it will compress the connecting spring 10, thereby causing the end plate 7 to move downward. This will match the height of the asphalt mixture 13 after it is compacted, and will further compact the asphalt mixture 13 outside the manhole cover installation area (if it were rigid, it would support the roller, preventing the asphalt mixture 13 at its edge from being affected by the roller). At the same time, when the end cover loses the effect of the roller, the connecting spring 10 will reset and push the end plate 7 upward, thus discharging the asphalt mixture 13 that has entered the installation area and keeping the installation area from being filled.

[0040] In this configuration, the L-shaped annular plate 9 is positioned on the outer surface of the outer annular plate 8. The advantage of this configuration is that when the end cap moves down, the L-shaped annular plate 9 is located at the bottom, which can enclose the space at the bottom of the installation area and prevent the asphalt mixture 13 from entering the lower part of the installation area. At the same time, the outer annular plate 8 is located inside the L-shaped annular plate 9, and its edge will not compress the asphalt mixture 13, that is, it will not interfere with its downward movement. In addition, even if the asphalt mixture 13 enters the installation area (the thickness area of ​​the L-shaped annular plate 9) from the outer side of the outer annular plate 8, it can only remain at the top of the installation area. This also makes it easier to remove the inner sleeve 5 later by moving the L-shaped annular plate 9 upward to clean the excess asphalt mixture 13 out of the installation area.

[0041] In one feasible embodiment, the end plate 7 is further provided with an inner annular plate 11. One end of the inner annular plate 11 is fixed to the end plate 7 and is set parallel to the outer annular plate 8. The other end of the inner annular plate 11 is flush with the other end of the outer annular plate 8. The inner annular plate 11 is provided to limit and support the downward movement of the end plate 7. That is, when a load is applied to the end plate 7 later, the L-shaped annular plate 9 will abut against the inner annular plate 11. In other words, the L-shaped annular plate 9 is not easy to shift under force. At the same time, the L-shaped annular plate 9 will not move after contact, which can be understood as rigidity, which can better compact the asphalt mixture 13.

[0042] In one feasible embodiment, the L-shaped annular plate 9 is provided with a scraper component at one end of the side that is slidably connected to the outer annular plate 8. The outer side of the scraper component is flush with the outer side of the L-shaped annular plate 9. The scraper component can play a cutting role and can remove excess asphalt mixture 13 within the installation area that causes installation interference when the installation area is removed later.

[0043] In one feasible embodiment, an outer retaining ring is provided on the lower end of the outer annular plate 8, and an inner retaining ring is provided on the end of the L-shaped annular plate 9 that is slidably connected to the outer annular plate 8. The retaining rings are provided only to prevent the L-shaped annular plate 9 and the outer annular plate 8 from separating.

[0044] In one feasible embodiment, a detachably connected annular mounting plate 3 is provided on the inner side of the lower end of the outer sleeve 1. A plurality of return springs 4 are evenly distributed in a ring on the annular mounting plate 3. In this specific embodiment, the number of return springs 4 is 6. A plurality of rectangular through slots 6 matching the return springs 4 are provided on the side wall of the inner sleeve 5. One end of the return spring 4 is fixed to the annular mounting plate 3, and the other end of the return spring 4 is abutted against the end of the rectangular through slot 6 or the lower end face of the inner sleeve 5.

[0045] The purpose of this setting is to allow for switching the height between the ends of the inner sleeve 5 and the outer sleeve 1. When the return spring 4 is located in the rectangular through groove 6, the relative height between the ends is relatively low, which allows the end plate 7 to be flush with the asphalt mixture 13 paving road surface, thus enclosing and reserving space for the manhole cover installation area. When the inner sleeve 5 is lifted and rotated, the lower edge of the inner sleeve 5 contacts the return spring 4, and the distance between the ends is relatively large. At this time, during the load application gap, the inner sleeve 5 will rebound under the action of the return spring 4, facilitating the addition of asphalt mixture 13 to the installation area for compaction.

[0046] In one feasible embodiment, the outer side of the annular mounting plate 3 is slidably connected to the inner wall of the outer sleeve 1. Several annularly distributed connecting blocks are provided on the lower end face of the outer sleeve 1. The connecting blocks are provided with threaded holes, and matching screws are provided in the threaded holes. The end of the screw is rotatably connected to the annular mounting plate 3. It is easy to understand that in this way, the height of the annular mounting plate 3 inside the outer sleeve 1 can be controlled by rotating the screw. That is, the height between the ends of the outer sleeve 1 and the inner sleeve 5 can be controlled, so that the surface of the end cover can match the paving height of the asphalt mixture 13. In other words, this device can be used for manhole cover area reservations on pavements with different paving thicknesses.

[0047] In one feasible embodiment, preferably, the mounting bracket assembly includes several annularly arranged protrusions. Each protrusion has an inverted V-shaped block on its side facing the upper end of the outer sleeve. Preferably, there are three annular protrusions. This arrangement enables mounting while reducing resistance during lifting. This configuration is primarily for situations where the reserved installation area is deep, requiring the initial filling and compaction of asphalt concrete before installing the manhole cover mounting base 14. During compaction, the mounting bracket assembly is embedded within the asphalt mixture 13. Therefore, this configuration results in a smaller contact area, making it easier to remove. If the installation area is of suitable depth, the manhole cover mounting base 14 can be installed directly. In this case, the mounting bracket assembly can simply be annular, as it is directly mounted on the manhole cover mounting base 14 and will not be embedded within the asphalt mixture 13.

[0048] The compaction method includes a method for compacting the asphalt mixture 13 at the junction of the asphalt mixture 13 pavement and the manhole cover installation area, and the method includes the following steps:

[0049] S1. Slide the outer sleeve 1 onto the inner wall of the shaft so that the hanging boss assembly is hung on the road surface of the foundation 12 at the end of the shaft.

[0050] S2. Slide the inner sleeve 5 onto the inner wall of the outer sleeve 1 so that the return spring 4 is located in the rectangular through groove 6;

[0051] S3. By rotating the screw, adjust the position of the annular mounting plate 3 on the inner wall of the inner sleeve 5 so that the upper surface of the end plate 7 is flush with the road surface after the asphalt mixture 13 is laid.

[0052] S4. Fill the area outside the manhole cover installation area with asphalt mixture 13, and then use a road roller to repeatedly compact the area between the manhole cover installation area and the area filled with asphalt mixture 13.

[0053] In this technical solution, after step S4, a method for compacting the asphalt mixture 13 within the manhole cover installation area is also included, which includes the following steps:

[0054] S5. Pull the inner sleeve 5 upward and rotate it so that the return spring 4 disengages from the rectangular through groove 6 and abuts against the end of the inner sleeve 5.

[0055] S6. Then, asphalt mixture 13 is filled into the manhole cover installation area, and the asphalt mixture 13 in the manhole cover installation area is squeezed by applying intermittent load to the end plate 7 and causing it to move downward.

[0056] S7. When the asphalt mixture 13 in the manhole cover installation area is compacted to the installation height of the manhole cover mounting seat 14, the inner sleeve 5 and the outer sleeve 1 are pulled upwards, and the manhole cover mounting seat 14 is placed into the installation area.

[0057] S8. Insert the inner sleeve 5 and the outer sleeve 1, so that the hooking boss assembly of the outer sleeve 1 is hooked to the upper end of the manhole cover mounting base 14.

[0058] S9. Repeat step S6 until the asphalt mixture 13 in the manhole cover installation area is flush with the road surface.

[0059] The above method can improve the compaction effect of asphalt mixture 13 in the manhole cover installation area and its surrounding area, that is, improve the installation effect of the manhole cover and the paving effect of the road surface.

[0060] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of the present invention.

Claims

1. A compaction method for asphalt mixture compaction equipment used in road paving, characterized in that: asphalt... The mixture compaction device is installed inside the manhole of the asphalt mixture paved road. It includes an outer sleeve that matches the inner wall of the manhole. The outer side of the outer sleeve is slidably connected to the inner wall of the manhole. The upper end of the outer sleeve is provided with a hanging boss assembly. The inner wall of the outer sleeve is provided with an inner sleeve that is slidably connected to it. The outer wall of the inner sleeve is in contact with the inner wall of the outer sleeve. The upper end of the inner sleeve is provided with an end plate. The end plate is fixedly connected to the end of the inner sleeve. The outer edge of the lower surface of the end plate is provided with an annular limiting compaction assembly. The upper end of the annular limiting compaction assembly is fixed to the end plate. There is a sliding gap between the annular limiting compaction assembly and the inner sleeve to facilitate the sliding of the hanging boss assembly. The annular limiting and compaction assembly includes an outer annular plate, one end of which is fixed to an end plate. An L-shaped annular plate with an L-shaped cross-section is provided on the outer surface edge of the outer annular plate. One side of the L-shaped annular plate is slidably connected to the outer surface of the outer annular plate, and the other side of the L-shaped annular plate is located directly below the end plate, and has several annularly distributed connecting springs thereon. One end of each connecting spring is fixed to the L-shaped annular plate, and the other end is fixed to the lower surface of the end plate. An inner annular plate is also provided on the end plate, one end of which is fixed to the end plate and parallel to the outer annular plate. The other end of the inner annular plate is flush with the other end of the outer annular plate. A scraper component is provided at the end of the side of the L-shaped annular plate that is slidably connected to the outer annular plate, and the outer surface of the scraper component is flush with the outer surface of the L-shaped annular plate. The lower end of the outer annular plate is provided with an outer retaining ring, and the end of the L-shaped annular plate that is slidably connected to the outer annular plate is provided with an inner retaining ring; the inner side of the lower end of the outer sleeve is provided with a detachably connected annular mounting plate, and a plurality of return springs are evenly distributed in a ring on the annular mounting plate; the side wall of the inner sleeve is provided with a plurality of rectangular through slots that match the return springs; one end of the return spring is fixed to the annular mounting plate, and the other end of the return spring abuts against the end of the rectangular through slot or the lower end face of the inner sleeve; the outer side of the annular mounting plate is slidably connected to the inner wall of the outer sleeve; the lower end face of the outer sleeve is provided with a plurality of annularly distributed connecting blocks; the connecting blocks are provided with threaded holes, and a matching screw is provided in the threaded holes; the end of the screw is rotatably connected to the annular mounting plate; the hanging boss assembly includes a plurality of annularly arranged protrusions, and the side of the protrusions facing the upper end of the outer sleeve is provided with an inverted V-shaped block. This compaction method includes a method for compacting asphalt mixture at the junction of the asphalt pavement and the manhole cover installation area, and the method includes the following steps: S1. Slide the outer sleeve onto the inner wall of the shaft so that the mounting boss assembly is attached to the foundation road surface at the end of the shaft. S2. Slide the inner sleeve onto the inner wall of the outer sleeve so that the return spring is located in the rectangular through groove; S3. By rotating the screw, adjust the position of the annular mounting plate on the inner wall of the inner sleeve so that the upper surface of the end plate is flush with the road surface after the asphalt mixture is laid. S4. Fill the area outside the manhole cover installation area with asphalt mixture, and then use a road roller to repeatedly compact the area between the manhole cover installation area and the asphalt mixture filling area. It also includes a method for compacting the asphalt mixture within the manhole cover installation area, implemented after step S4, which includes the following steps: S5. Pull the inner sleeve upward and rotate it so that the return spring disengages from the rectangular through groove and abuts against the end of the inner sleeve. S6. Then fill the manhole cover installation area with asphalt mixture, and squeeze the asphalt mixture in the manhole cover installation area by applying intermittent load to the end plate and causing it to move downward. S7. When the asphalt mixture in the manhole cover installation area is compacted to the installation height of the manhole cover mounting seat, lift the inner sleeve and outer sleeve upwards and put the manhole cover mounting seat into the installation area; S8. Insert the inner sleeve and outer sleeve, so that the hooking boss assembly of the outer sleeve is hooked onto the upper end of the manhole cover mounting base. S9. Repeat step S6 until the asphalt mixture in the manhole cover installation area is flush with the road surface.

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