Municipal road asphalt concrete pavement construction equipment and construction method thereof

By designing a rotatable arc-shaped compaction plate and support wheel structure on the road roller, the problem of wheelbase changes affecting the driving experience when the road roller is moved to a different site has been solved. This has enabled stable switching and efficient construction between the transfer and compaction modes, improving construction quality and the equipment's usability.

CN116623499BActive Publication Date: 2026-05-05TIANJIN KAICHEN ENERGY TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TIANJIN KAICHEN ENERGY TECH CO LTD
Filing Date
2023-06-29
Publication Date
2026-05-05

AI Technical Summary

Technical Problem

When existing road rollers are moved to different sites, the position of the support wheels changes, resulting in a change in wheelbase. This affects the driving experience, increases driving difficulty and accident risk, and also damages the completed road surface.

Method used

Design a municipal road asphalt concrete pavement construction equipment, which adopts a rotatable arc-shaped compaction plate and support wheel structure. It realizes the switching between two operation modes through positioning components and circulation drive components, keeps the equipment parameters stable, avoids damage to the road surface, and improves the compaction effect through heating box and hydraulic system.

Benefits of technology

It achieves stable switching between transfer and compaction modes, maintains a consistent driving experience, reduces transportation costs, improves construction efficiency and road compaction quality, and has strong structural stability and anti-interference capabilities.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

This application relates to a construction equipment and method for municipal road asphalt concrete pavement, comprising a frame, a support wheel at the front end of the frame, and a drive steering wheel at the rear of the frame. A compaction device is mounted on the support wheel, comprising a plurality of arc-shaped compaction plates rotatably connected to the frame and rotating along the axis of the support wheel. Each arc-shaped compaction plate can abut against the lower outer side of the support wheel. The support wheel has a positioning part that positions the arc-shaped compaction plates away from the ground. When the positioning part positions the arc-shaped compaction plates, a gap is formed between the ends of the arc-shaped compaction plates, allowing the support wheel to abut against the ground. This application achieves a better human-machine interaction experience by minimizing parameter changes between the compaction mode and the transfer mode when the equipment has the function of relocating to different sites.
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Description

Technical Field

[0001] This application relates to the field of road construction technology, and in particular to a construction equipment and method for municipal road asphalt concrete pavement. Background Technology

[0002] Currently, road rollers are one of the essential engineering machines in the construction of asphalt concrete pavements, as they can increase the compaction of the road surface soil, improve the quality and service life of the road surface, and are therefore widely used.

[0003] The existing Chinese patent with publication number CN102817303A discloses a transport-free single-drum vibratory roller. The roller includes a long frame, a compaction drum mounted on the long frame, wheels, and a lifting device for driving the wheels to rise and fall vertically. The wheels are mounted on the lifting device, which includes a first support plate, a second support plate, a first hydraulic cylinder, a second hydraulic cylinder, a shaft, and a bearing sleeved on the shaft. The first and second support plates are mounted on the long frame. The first hydraulic cylinder is mounted on the first support plate, and its piston rod is connected to the shaft through the bearing. The second hydraulic cylinder is mounted on the second support plate, and its piston rod is connected to the shaft through the bearing.

[0004] Road rollers are heavy, weighing tens of tons, and their steel wheels can severely damage completed road surfaces. To facilitate relocation of the road roller without additional auxiliary equipment, one side of the wheels is raised or lowered. However, changing the position of the support wheels alters the roller's wheelbase, changing its turning radius and thus the driving experience, significantly increasing the difficulty of driving and raising the accident rate. In response to these issues, the applicant proposes that when switching between different modes of road construction equipment, the original driving experience should be maintained as much as possible. Summary of the Invention

[0005] In order to minimize the parameter changes between the compaction mode and the transfer mode when the equipment has the function of transferring sites, and to achieve a better human-machine driving experience, this application provides a municipal road asphalt concrete pavement construction equipment and its construction method.

[0006] This application provides a construction equipment and method for municipal road asphalt concrete pavement, which adopts the following technical solution: A municipal road asphalt concrete pavement construction equipment includes a frame, a support wheel at the front end of the frame, a drive steering wheel at the rear of the frame, and a compaction device on the support wheel. The compaction device includes a plurality of arc-shaped compaction plates rotatably connected to the frame and rotating along the axis of the support wheel. The arc-shaped compaction plates can respectively abut against the lower outer side of the support wheel. The support wheel is provided with a positioning part for positioning the arc-shaped compaction plates away from the ground. When the positioning part positions the arc-shaped compaction plates, a gap is formed between the ends of the plurality of arc-shaped compaction plates, allowing the support wheel to abut against the ground.

[0007] By adopting the above technical solution, the equipment has two different operating modes. In transfer mode, the support wheels, acting as tires with one side in contact with the ground, have the same function of moving on paved roads as ordinary vehicles, without causing damage or destruction to the road surface. It has strong mobility and can effectively reduce transportation costs in transfer projects. In compaction mode, the curved compaction plate always remains in contact with the ground, which can effectively transfer gravity to the asphalt or concrete, thereby completing the compaction of the ground. Compared with traditional equipment, the functionality of compacting the ground is well preserved, making it highly efficient. Furthermore, during the switching between the two modes, the equipment parameters only increase the thickness of the curved compaction plate, without changing parameters such as the wheelbase and turning radius, thus preserving the human-machine experience of the equipment.

[0008] Preferably, the curved roller is provided with a circulation drive unit, which includes a friction plate, a connecting device, and a booster pump. The friction plate is accommodated and passes through the curved roller and can abut against the support wheel. A hydraulic cavity is formed between the friction plate and the curved roller. An axle for the support wheel to rotate is connected to the frame. The connecting device connects to the hydraulic cavity. One end of the connecting device passes through and is slidably connected to the friction plate, and the other end is rotatably connected to the axle. One friction plate corresponds to two connecting devices, and one connecting device of one friction plate is arranged adjacent to one connecting device of an adjacent friction plate. The booster pumps are respectively fixed to the frame. The outlet of one booster pump is respectively connected to two adjacent connecting devices corresponding to the two friction plates, and the other booster pump is respectively connected to the remaining connecting devices.

[0009] By adopting the above technical solution, the arc-shaped compaction plate completes the positioning with the support wheel through the circulating drive unit. After the support wheel is positioned, it has greater inertia, resulting in a better compaction effect when compacting the ground. The compacted bottom surface is flatter and more uniform, and the construction effect is better.

[0010] Preferably, the communication device includes a communication cavity box, a sealing ring, and a communication rigid tube. The communication cavity box is fixed to the axle, and a cavity is formed in the middle of the annular outer wall of the communication cavity box. The sealing ring passes through and is rotatably connected to the cavity. One end of the communication rigid tube passes through and is slidably connected to the friction plate and communicates with the hydraulic cavity, and the other end is fixed to the sealing ring and communicates with the communication cavity box.

[0011] By adopting the above technical solution, the connecting device is responsible for connecting the oil to the rotating arc-shaped rolling plate; when the sealing ring and the connecting cavity box are engaged, the oil forms a seal between the sealing ring and the connecting cavity box, so that the hydraulic chamber can reach a higher oil pressure and achieve a stable connection.

[0012] Preferably, the connecting rigid pipe is provided with a control part, which includes a control valve head, a control valve stem, and an abutment rod. The control valve heads are respectively sleeved on the connecting rigid pipe, and the control valve heads of two adjacent friction plates are axially overlapped in one pair and staggered in the other pair. The control valve stem passes through the control valve head on one side along the rotation direction of the arc-shaped rolling plate. The control valve stem has a through hole corresponding to the connecting rigid pipe. The control valve stem can abut against the adjacent control valve head. The control valve head is provided with an elastic reset piece that elastically connects to the control valve stem. One end of the abutment rod is fixed to the axle, and the other end extends towards the control valve stem and drives the control valve stem to disengage from the control valve head. The abutment rod is made of elastic material.

[0013] By adopting the above technical solution, the control unit controls the connection between the arc-shaped compaction plate and the support wheel. The control unit controls quickly, which can make the connection between the two arc-shaped compaction plates stable and without gaps, thereby achieving a better compaction effect. The control unit is stable and will not be affected by high temperature or vibration, has strong anti-interference ability, and operates stably.

[0014] Preferably, the arc-shaped rolling plate has a reset drive unit on the upward rotating side, the reset drive unit includes a reset roller and a reset motor; the reset motor is fixed to the wheel axle, the reset roller is coaxially fixed to the output shaft of the reset motor, and the reset roller can be engaged with the outer side of the arc-shaped rolling plate.

[0015] By adopting the above technical solution, the reset drive unit helps the arc-shaped rolling mill plate complete the cycle faster and enter the next round of rolling process, thus ensuring the smooth operation of the arc-shaped rolling mill plate.

[0016] Preferably, the positioning part includes a positioning bracket and a positioning pin. The positioning bracket extends to both ends of a plurality of arc-shaped rolling plates and between adjacent arc-shaped rolling plates. The positioning pin is respectively inserted through the extended end of the positioning bracket and is axially overlapped with the arc-shaped rolling plate. The positioning pin is wider than the length of the control valve stem that passes through the control valve head.

[0017] By adopting the above technical solution, the positioning part has a simple structure and low cost, and can easily position the arc-shaped rolling plate to adapt to the working state of transfer.

[0018] Preferably, the compaction device further includes compaction hubs, which are rotatably connected to the axle and extend and are fixed to the arc-shaped compaction plate.

[0019] By adopting the above technical solution, the curved rolling plate has a separate support component, which makes the curved rolling plate more robust and durable.

[0020] Preferably, the frame is equipped with a heating box, which is connected to the inlet and outlet of the corresponding booster pump.

[0021] By adopting the above technical solution, the oil circulates rapidly during the rolling process, and the heating box can directly transfer the temperature to the arc-shaped rolling plate through the oil pipe. Moreover, the oil heating results in a more uniform temperature, further improving the rolling effect of the equipment and enhancing the construction quality.

[0022] Preferably, the connecting chamber is connected to an oil pipe, which passes through the wheel axle and extends outward along the wheel axle to the corresponding booster pump.

[0023] By adopting the above technical solution, the oil pipe connection is convenient.

[0024] A method for constructing asphalt concrete pavement for municipal roads: During compaction, the control valve rod of an arc-shaped compaction plate connected to the outlet of a booster pump is pushed, and oil is injected into the hydraulic chamber. The friction plate approaches and abuts against the support wheel, and the equipment moves forward, with the friction plate rolling forward with the support wheel. When an adjacent arc-shaped compaction plate rotates along the rotation direction of the support wheel and abuts against the front arc-shaped compaction plate, the control valve rod connected to the outlet of the booster pump abuts against the front control valve head, and the corresponding connecting hard pipe connects and injects oil into the hydraulic chamber. The arc-shaped friction plate is positioned on the support wheel and forms an integral part with the front arc-shaped compaction plate, rotating and compacting as the equipment moves.

[0025] After an arc-shaped roller passes over the ground, rotates upward and leaves the ground, the front end of the arc-shaped roller contacts the reset roller. At the same time, the control valve rod connected to the inlet of the booster pump abuts against the abutment rod, and the corresponding connecting hard pipe connects and draws oil from the hydraulic chamber. The friction plate moves away from the support wheel and creates a gap with the support wheel. The reset roller drives the arc-shaped roller to rotate in the same direction as the support wheel, thus completing the cycle.

[0026] When the equipment needs to be moved again, insert the foremost positioning pin along the rotation direction of the support wheels towards the curved roller plate. The curved roller plate will then abut against the positioning pin and stop falling. Subsequent curved roller plates will then be positioned sequentially. For the curved roller plate at the rear, insert the last positioning pin before turning off the reset motor to lift the curved roller plate off the ground.

[0027] By adopting the above technical solution, the equipment can switch freely between the rolling state and the transfer state, and retains the advantages of both states. The device operates smoothly in a cycle, and the equipment structure is stable, making it highly valuable.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] The equipment has two different operating modes. In transfer mode, the support wheels act as tires with one side in contact with the ground, allowing it to move on paved roads like a regular vehicle without damaging or destroying the road surface. This provides excellent mobility and effectively reduces transportation costs during transfer projects. In compaction mode, the curved compaction plate remains in contact with the ground, effectively transferring gravity to the asphalt or concrete to compact the surface. Compared to transmission-based equipment, its functionality is well preserved, resulting in high work efficiency. Furthermore, during the switching between the two modes, only the thickness of the curved compaction plate increases; parameters such as wheelbase and turning radius remain unchanged, preserving the human-machine interface and driving experience.

[0030] The curved roller is positioned with the support wheel through the circulating drive unit. After being positioned with the support wheel, it has greater inertia, which results in a better compaction effect when compacting the ground. The compacted bottom surface is flatter and more uniform, and the construction effect is better.

[0031] The connecting device is responsible for connecting the hydraulic fluid through the rotating arc-shaped roller. With the sealing ring engaged with the connecting chamber, a seal is formed between the sealing ring and the connecting chamber, allowing for higher oil pressure within the hydraulic chamber and achieving a stable connection.

[0032] The control unit controls the connection between the arc-shaped compaction plate and the support wheel. The control unit controls quickly, ensuring a stable connection between the two arc-shaped compaction plates without gaps, thus achieving a better compaction effect. The control unit is stable and is not affected by high temperature or vibration, has strong anti-interference capabilities, and operates stably.

[0033] The reset drive unit helps the arc-shaped rolling mill plate complete the cycle faster and enter the next round of rolling process, ensuring the smooth operation of the arc-shaped rolling mill plate;

[0034] During the rolling process, the oil circulates rapidly, and the heating box can directly transfer the temperature to the arc-shaped rolling plate through the oil pipe. Moreover, the oil heating results in a more uniform temperature, which further improves the rolling effect of the equipment and enhances the construction quality.

[0035] The equipment can switch freely between compaction and transfer modes, and retains the advantages of both modes. The operation of the device is smooth and the structure is stable, making it highly valuable. Attached Figure Description

[0036] Figure 1 This is a structural schematic diagram of an embodiment of this application;

[0037] Figure 2This application embodiment conceals a partial cross-sectional view of the arc-shaped rolling plate on one side;

[0038] Figure 3 yes Figure 2 A magnified view of part A;

[0039] Figure 4 This is a schematic diagram of the structure of an embodiment of this application, showing the control valve stem and hiding one side of the control valve head.

[0040] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Support wheel; 3. Drive steering wheel; 4. Compactor; 41. Arc-shaped compactor plate; 42. Compactor hub; 5. Circulation drive unit; 51. Friction plate; 52. Connecting device; 521. Connecting chamber; 522. Sealing ring; 523. Connecting rigid pipe; 53. Booster pump; 6. Hydraulic chamber; 7. Axle; 8. Control unit; 81. Control valve head; 82. Control valve stem; 83. Abutment rod; 9. Through hole; 10. Elastic reset plate; 11. Reset drive unit; 111. Reset motor; 112. Reset roller; 12. Heating box; 13. Positioning unit; 131. Positioning bracket; 132. Positioning pin; 14. Oil pipe. Detailed Implementation

[0041] The present application will be further described in detail below with reference to the accompanying drawings.

[0042] This application discloses a construction equipment and method for municipal road asphalt concrete pavement, referring to... Figure 1 The device includes a frame 1, with a drive steering wheel 3 at the rear of the frame 1 responsible for moving and steering the equipment. A cab is mounted on the frame, with the front windows of the cab tilted upwards and downwards, providing better visibility. The frame 1 extends forward and is fixed with an axle 7, on which a support wheel 2 is rotatably connected. A compaction device 4 is mounted on the support wheel 2, which includes an arc-shaped compaction plate 41 and a compaction hub 42. The compaction hub 42 is rotatably connected to the axle 7 and extends outwards. Several arc-shaped compaction plates 41 are fixed to the compaction hub 42 and coaxially arranged with the axle 7, but the ends of the arc-shaped compaction plates 41 are not connected.

[0043] Reference Figure 1When the equipment needs to be moved, the support wheel 2 is provided with a positioning part 13 for positioning arc-shaped rolling plates 41 away from the ground. The positioning part 13 includes a positioning bracket 131 and a positioning pin 132. The positioning bracket 131 extends to both ends of the arc-shaped rolling plates 41 and between adjacent arc-shaped rolling plates 41. The positioning pin 132 is respectively inserted into the extension end of the positioning bracket 131 and is axially overlapped with the arc-shaped rolling plates 41. When the pin is inserted between the arc-shaped rolling plates 41, a gap is generated between the arc-shaped rolling plates 41, and a gap is formed between the ends of the arc-shaped rolling plates 41 for the support wheel 2 to abut against the ground.

[0044] Reference Figure 1 , 2 When the road surface needs to be compacted, the arc-shaped compaction plate 41 is kept between the support wheel 2 and the ground by the circulation drive unit 5 and the reset drive unit 11, and compacts the ground as the support wheel 2 rotates.

[0045] Reference Figure 2 , 3 The circulating drive unit 5 includes a friction plate 51, a connecting device 52, and a booster pump 53. The friction plate 51 is accommodated and passes through the arc-shaped rolling plate 41 and can abut against the support wheel 2. A hydraulic chamber 6 is formed between the friction plate 51 and the arc-shaped rolling plate 41. The booster pump 53 is fixed to the frame 1. The connecting device 52 connects the hydraulic chamber 6 and the booster pump 53. The booster pump injects or extracts oil into the hydraulic chamber 6.

[0046] Reference Figure 2 Each friction plate 51 corresponds to two connecting devices 52. Each connecting device 52 includes a connecting cavity 521, a sealing ring 522, and a connecting rigid pipe 523. The connecting cavity 521 is fixed to the axle 7, and a cavity is formed in the middle of the annular outer wall of the connecting cavity 521. The sealing ring 522 passes through and is rotatably connected to the cavity, thereby ensuring that the sealing ring 522 maintains a seal with the connecting cavity 521 when rotating. One end of the connecting rigid pipe 523 passes through and is slidably connected to the friction plate 51 and connects to the hydraulic cavity 6, and the other end is fixed to the sealing ring 522 and connects to the connecting cavity 521. A sealing ring 522 of one friction plate 51 is arranged adjacent to a sealing ring 522 of an adjacent friction plate 51.

[0047] Reference Figure 1 , 2A booster pump 53 is connected to an oil pipe 14, which passes through the wheel axle 7 and extends into the connecting chamber 521. The outlet of one booster pump 53 is connected to two adjacent connecting chambers 521 corresponding to the two friction plates 51 respectively through the oil pipe 14. The other booster pump 53 is connected to the remaining connecting chambers 521 respectively through the oil pipe 14. A heating box 12 is fixed on the frame 1. The heating box 12 is connected to the inlet of the booster pump 53 connected to the connecting chamber 521 through the outlet, and supplies oil to the hydraulic chamber 6. The heating box 12 is connected to the outlet of the booster pump 53 connected to the connecting chamber 521 through the inlet, and stores the oil drawn from the hydraulic chamber 6. The heating box 12 heats the oil to raise the temperature of the arc-shaped rolling plate 41.

[0048] Reference Figure 2 , 4 The connecting hard pipe 523 is provided with a control part 8 for controlling the oil circuit connection of the control oil pipe 14. The control part 8 includes a control valve head 81, a control valve stem 82 and an abutment rod 83. The control valve heads 81 are respectively sleeved on the connecting hard pipe 523, and the control valve heads 81 of two adjacent friction plates 51 are axially overlapped, while the other pair of control valve heads 81 are staggered.

[0049] Reference Figure 1 , 2 The control valve stem 82 passes through the control valve head 81 on one side along the rotation direction of the arc-shaped rolling plate 41, and the part passing through the outside of the control valve head 81 is shorter than the width of the positioning pin 132.

[0050] Reference Figure 2 , 4 The control valve stem 82 has a through hole 9 corresponding to the hard tube 523. The control valve stem 82 can abut against the adjacent control valve head 81. The control valve head 81 is provided with an elastic reset piece 10 that elastically connects to the control valve stem 82. The abutment rod 83 is fixed to the axle 7 and extends towards the control valve stem 82. The abutment rod 83 is made of elastic material and is located on the side of the control valve head 81 that rotates upward.

[0051] Reference Figure 1 The reset drive unit 11 includes a reset roller 112 and a reset motor 111. The reset motor 111 is fixed to the wheel axle 7, and the reset roller 112 is coaxially fixed to the output shaft of the reset motor 111. The reset roller 112 can be engaged with the outer side of the arc-shaped rolling plate 41 and is located on the side of the arc-shaped rolling plate 41 that rotates upward.

[0052] The working process of this application is as follows: During compaction, the control valve rod 82 of the booster pump 53 outlet is pushed to push the arc-shaped compaction plate 41, and oil is injected into the hydraulic chamber 6. The friction plate 51 approaches the support wheel 2 and abuts against the support wheel 2. The equipment moves forward, and the friction plate 51 rolls forward with the support wheel 2. When the adjacent arc-shaped compaction plate 41 rotates along the rotation direction of the support wheel 2 and abuts against the front arc-shaped compaction plate 41, the control valve rod 82 of the booster pump 53 outlet abuts against the front control valve head 81, and the corresponding connecting hard pipe 523 connects and injects oil into the hydraulic chamber 6. The arc-shaped friction plate 51 is positioned on the support wheel 2 and forms an integral part with the front arc-shaped compaction plate 41, and rotates and compacts as the equipment moves.

[0053] After an arc-shaped roller 41 rolls over the ground and rotates upward and detaches from the ground, the front end of the arc-shaped roller 41 contacts the reset roller 112. At the same time, the control valve rod 82 connected to the inlet of the booster pump 53 abuts against the abutment rod 83. The corresponding connecting hard pipe 523 connects and draws oil from the hydraulic chamber 6. The friction plate 51 moves away from the support wheel 2 and creates a gap with the support wheel 2. The reset roller 112 drives the arc-shaped roller 41 to rotate in the same direction as the support wheel 2, thus completing the cycle.

[0054] When the equipment needs to be moved again, the positioning pin 132 at the front along the rotation direction of the support wheel 2 is inserted toward the arc-shaped rolling plate 41. The arc-shaped rolling plate 41 abuts against the positioning pin 132 and no longer falls. The subsequent arc-shaped rolling plates 41 are positioned in sequence. The arc-shaped rolling plate 41 at the rear needs to have its last positioning pin 132 inserted before the reset motor 111 is turned off, thereby realizing the positioning of the arc-shaped rolling plate 41 off the ground.

[0055] 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. A municipal road asphalt concrete pavement construction equipment, comprising a frame (1), a driver's cab mounted on the frame, a support wheel (2) at the front end of the frame (1), and a drive steering wheel (3) at the rear of the frame (1), characterized in that: The support wheel (2) is provided with a rolling device (4), which includes a plurality of arc-shaped rolling plates (41) rotatably connected to the frame (1) and rotating along the axis of the support wheel (2). The arc-shaped rolling plates (41) respectively abut against the lower outer side of the support wheel (2). The support wheel (2) is provided with a positioning part (13) that positions the arc-shaped rolling plates (41) away from the ground. When the positioning part (13) positions the arc-shaped rolling plates (41), a gap is formed between the ends of the plurality of arc-shaped rolling plates (41) to allow the support wheel (2) to abut against the ground. A circulating drive unit (5) is provided on the arc-shaped rolling plate (41). The circulating drive unit (5) includes a friction plate (51), a connecting device (52), and a booster pump (53). The friction plate (51) is accommodated and passes through the arc-shaped rolling plate (41) and abuts against the support wheel (2). A hydraulic cavity (6) is formed between the friction plate (51) and the arc-shaped rolling plate (41). An axle (7) for rotating the support wheel (2) is connected to the frame (1). The connecting device (52) connects to the hydraulic cavity (6). One end of the connecting device (52) passes through... It is slidably connected to the other end of the friction plate (51) and rotatably connected to the wheel axle (7); one friction plate (51) corresponds to two connecting devices (52), and one connecting device (52) of one friction plate (51) is arranged adjacent to one connecting device (52) of the adjacent friction plate (51); booster pumps (53) are fixed to the frame (1), the outlet of one booster pump (53) is connected to the two adjacent connecting devices (52) corresponding to the two friction plates (51), and the other booster pump (53) is connected to the remaining connecting devices (52).

2. The municipal road asphalt concrete pavement construction equipment according to claim 1, characterized in that: The connecting device (52) includes a connecting cavity box (521), a sealing ring (522), and a connecting rigid pipe (523). The connecting cavity box (521) is fixed to the axle (7), and a cavity is provided in the middle of the annular outer wall of the connecting cavity box (521). The sealing ring (522) passes through and is rotatably connected to the cavity. One end of the connecting rigid pipe (523) passes through and is slidably connected to the friction plate (51) and connects to the hydraulic cavity (6), and the other end is fixed to the sealing ring (522) and connects to the connecting cavity box (521).

3. The municipal road asphalt concrete pavement construction equipment according to claim 2, characterized in that: The connecting rigid pipe (523) is provided with a control unit (8), which includes a control valve head (81), a control valve stem (82), and an abutment rod (83). The control valve heads (81) are respectively sleeved on the connecting rigid pipe (523), and the control valve heads (81) of two adjacent friction plates (51) are axially overlapped in one pair and staggered in the other pair. The control valve stem (82) passes through the control valve head (81) on one side along the rotation direction of the arc-shaped rolling plate (41) to control the valve. The valve stem (82) has a through hole (9) corresponding to the hard tube (523). The control valve stem (82) abuts against the adjacent control valve head (81). The control valve head (81) has an elastic reset piece (10) that elastically connects to the control valve stem (82). One end of the abutment rod (83) is fixed to the wheel axle (7), and the other end extends toward the control valve stem (82) and drives the control valve stem (82) to disengage from the control valve head (81). The abutment rod (83) is made of elastic material.

4. The municipal road asphalt concrete pavement construction equipment according to claim 3, characterized in that: The arc-shaped rolling plate (41) has a reset drive unit (11) on the upward rotating side. The reset drive unit (11) includes a reset roller (112) and a reset motor (111). The reset motor (111) is fixed to the wheel axle (7), and the reset roller (112) is coaxially fixed to the output shaft of the reset motor (111). The reset roller (112) is engaged with the outer side of the arc-shaped rolling plate (41).

5. The municipal road asphalt concrete pavement construction equipment according to claim 4, characterized in that: The positioning part (13) includes a positioning bracket (131) and a positioning pin (132). The positioning bracket (131) extends to both ends of a plurality of arc-shaped rolling plates (41) and between adjacent arc-shaped rolling plates (41). The positioning pin (132) is respectively inserted through the extension end of the positioning bracket (131) and overlapped axially with the arc-shaped rolling plate (41). The positioning pin (132) is wider than the length of the control valve stem (82) that passes through the control valve head (81).

6. The municipal road asphalt concrete pavement construction equipment according to claim 1, characterized in that: The rolling device (4) also includes rolling hubs (42), which are rotatably connected to the axle (7) and extend and are fixed to the arc-shaped rolling plate (41).

7. The municipal road asphalt concrete pavement construction equipment according to claim 1, characterized in that: The frame (1) is equipped with a heating box (12), which is connected to the inlet and outlet of the corresponding booster pump (53).

8. The municipal road asphalt concrete pavement construction equipment according to claim 2, characterized in that: The connecting chamber (521) is connected to an oil pipe (14), which passes through the axle (7) and extends outward along the axle (7) to the corresponding booster pump (53).

9. A construction method for the municipal road asphalt concrete pavement construction equipment as described in claim 5, characterized in that: During compaction, the control valve rod (82) of the booster pump (53) connected to the arc-shaped compaction plate (41) is pushed, and oil is injected into the hydraulic chamber (6). The friction plate (51) approaches the support wheel (2) and abuts against the support wheel (2). The equipment moves forward, and the friction plate (51) rolls forward with the support wheel (2). When the adjacent arc-shaped compaction plate (41) rotates along the rotation direction of the support wheel (2) and abuts against the front arc-shaped compaction plate (41), the control valve rod (82) connected to the booster pump (53) abuts against the front control valve head (81). The corresponding connecting hard pipe (523) is connected and oil is injected into the hydraulic chamber (6). The arc-shaped friction plate (51) is positioned on the support wheel (2) and forms an integral part with the front arc-shaped compaction plate (41), and rotates and compacts as the equipment moves. After an arc-shaped roller (41) rolls over the ground and rotates upward and leaves the ground, the front end of the arc-shaped roller (41) contacts the reset roller (112), and at the same time, the control valve rod (82) connected to the inlet of the booster pump (53) abuts against the abutment rod (83). The corresponding connecting hard pipe (523) connects and draws oil from the hydraulic chamber (6). The friction plate (51) moves away from the support wheel (2) and creates a gap with the support wheel (2). The reset roller (112) drives the arc-shaped roller (41) to rotate in the same direction as the support wheel (2), thus completing the cycle. When the equipment needs to be moved again, the positioning pin (132) at the front along the rotation direction of the support wheel (2) is inserted toward the arc-shaped rolling plate (41). The arc-shaped rolling plate (41) abuts against the positioning pin (132) and no longer falls. The subsequent arc-shaped rolling plates (41) are positioned in sequence. The arc-shaped rolling plate (41) at the rear needs to have its last positioning pin (132) inserted before the reset motor (111) is turned off, so as to achieve the positioning of the arc-shaped rolling plate (41) off the ground.

Citation Information

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