A high pressure asphalt paving device

Abstract

The application discloses a high-pressure asphalt paving device and relates to the field of road engineering, which comprises a vehicle body and a paving part arranged on the vehicle body, wherein a flattening mechanism is arranged on the paving part; the flattening mechanism is arranged at both ends of the paving part and behind the movement stroke of the paving part; and a power assembly for providing downward pressure of the flattening mechanism is further arranged. The high-pressure asphalt paving device provided by the application arranges the flattening mechanism behind the movement stroke of the paving part and at both ends of the paving part. After the paving part lays asphalt, the flattening mechanism passes through the edge or the connecting point of the asphalt, and the power assembly provides the downward pressure of the flattening mechanism, so that the edge or the connecting point of the asphalt can be compacted and smoothed. Therefore, the manual compacting and smoothing steps in the later stage can be omitted.

Description

Technical Field

[0001] This invention relates to the field of road engineering, and more specifically to a high-pressure asphalt paving device. Background Technology

[0002] As is generally known, a paver is a road construction machine used for roads, bridges, parking lots, and other similar locations. It is primarily used to evenly spread hot-mix asphalt concrete (HMA) or other road paving materials onto the road surface to form a smooth and uniform road surface layer. The use of pavers can improve the efficiency and quality of road construction, ensure the smoothness and density of the road surface layer, and enhance the service life of the road and driving comfort.

[0003] For example, the patent document with application number CN201710367617.0, authorization date of 2017-05-23, and titled "An Asphalt Paver" includes a paver body, a tracked walking device at the lower end of the paver body, a mixed material conveyor belt above the tracked walking device, a material trough at the end of the mixed material conveyor belt, a gravity screed behind the material trough, a heat transfer oil heating device inside the material trough and the gravity screed, a light oil burner and supporting device above the gravity screed, an operator's cab on the paver body, and an automated control system inside the operator's cab, including a PLC controller and a vehicle controller connected to the PLC controller, an LCD touch screen, a signal generator and receiver, and a roadside height reference. This invention sets a roadside height reference group to form a closed loop with the onboard automated control system, which can measure the precise height of the equipment in real time and automatically continue to the next height reference. It can adjust the material gate opening and the baffle height in real time according to the construction width and speed to form an ultra-flat and ultra-thin asphalt pavement.

[0004] The shortcoming of the existing technology is that after the paver has laid the asphalt, uneven areas will appear at the edges of the asphalt or at the connection points between the first and second laid areas. This requires additional personnel to perform secondary edge compaction and smoothing, which reduces work efficiency and increases labor costs. Summary of the Invention

[0005] The purpose of this invention is to provide a high-pressure asphalt paving device to overcome the above-mentioned shortcomings in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A high-pressure asphalt paving device includes a vehicle body and a paving section disposed on the vehicle body, wherein a flattening mechanism is disposed on the paving section; the flattening mechanism is located at both ends of the paving section and is located behind the travel stroke of the paving section; it also includes a power component for providing downward pressure to the flattening mechanism.

[0008] The high-pressure asphalt paving device described above includes a flattening mechanism comprising a first pressure roller and a second pressure roller. An mounting plate is fixedly connected to the paving section, and a first connecting rod is fixedly connected to the mounting plate. The two ends of the first pressure roller and the second pressure roller are rotatably connected to a first connecting rod.

[0009] In the aforementioned high-pressure asphalt paving device, a plurality of first pressure rings are evenly arranged on the circumferential surface of the first pressure roller, and a plurality of second pressure rings are evenly arranged on the circumferential surface of the second pressure roller. A first gap is formed between the plurality of first pressure rings, and the plurality of second pressure rings are arranged in a one-to-one correspondence with the plurality of first gaps.

[0010] In the aforementioned high-pressure asphalt paving device, the axial dimension of the second pressure ring is larger than the radial dimension of the first gap.

[0011] In the aforementioned high-pressure asphalt paving device, a second gap is formed between the second pressure rings, and cleaning mechanisms for scraping off the asphalt inside the first gap and the second gap are provided inside both the first gap and the second gap.

[0012] The high-pressure asphalt paving device described above includes a cleaning mechanism comprising a first scraper, a crossbar between the first connecting rods, one end of the first scraper being fixed to the crossbar, and the other end of the first scraper being fitted and connected to the inner wall of the first gap and the second gap.

[0013] In the aforementioned high-pressure asphalt paving device, a second scraper is provided on the first scraper, and the end of the second scraper is in close contact with the outer circumferential surface of the first pressure ring and the second pressure ring.

[0014] The high-pressure asphalt paving device described above includes a leveling roller in its leveling mechanism. A second connecting rod is fixedly connected to the mounting plate. The leveling roller is rotatably connected to the second connecting rod and is located behind the movement stroke of the first pressure roller and the second pressure roller.

[0015] The power component of the aforementioned high-pressure asphalt paving device includes a first connecting rod and a second connecting rod, both of which are spring telescopic rods.

[0016] In the aforementioned high-pressure asphalt paving device, the stiffness coefficient of the second connecting rod is greater than that of the first connecting rod.

[0017] In the above technical solution, the present invention provides a high-pressure asphalt paving device, in which the flattening mechanism is set behind the movement stroke of the paving part and located at both ends of the paving part. After the asphalt is laid in the paving part, the flattening mechanism will pass through the edge or connection point of the asphalt. The power component provides downward pressure to the flattening mechanism, thereby compacting and smoothing the edge or connection point of the asphalt, thus eliminating the need for manual compaction and smoothing in the later stage. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the overall structure of the flattening mechanism provided in another embodiment of the present invention;

[0021] Figure 3 This is a partial cross-sectional structural schematic diagram provided in another embodiment of the present invention;

[0022] Figure 4 This is a partial cross-sectional structural schematic diagram from another perspective provided in another embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the connection structure between the first scraper and the second scraper according to another embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the connection structure between the shovel and the first scraper according to another embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of the connection structure between the shovel and the second scraper provided in another embodiment of the present invention.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Vehicle body; 2. Paving section; 3. First pressure roller; 4. Second pressure roller; 5. Mounting plate; 6. First connecting rod; 7. First pressure ring; 8. Second pressure ring; 9. First gap; 10. Second gap; 11. First scraper; 1101. First horizontal section; 1102. Vertical section; 1103. Second horizontal section; 12. Crossbar; 13. Second scraper; 14. Transmission rod; 15. First magnet; 16. Second magnet; 17. Movable groove; 18. First spring; 19. Shovel plate; 1901. Sliding joint; 1902. Trapezoidal block; 20. Connecting rod; 21. Guide rail; 22. Sliding rod; 23. Stop block; 24. Second spring; 25. Leveling roller; 26. Second connecting rod. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] In the description of this invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and "lateral," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] Reference Figure 1-7 The present invention provides a high-pressure asphalt paving device, including a vehicle body 1 and a paving section 2 disposed on the vehicle body 1. The paving section 2 is provided with a flattening mechanism. The flattening mechanism is located at both ends of the paving section 2 and is located behind the movement stroke of the paving section 2. It also includes a power component for providing downward pressure to the flattening mechanism.

[0031] Specifically, the vehicle body 1 can be wheeled or tracked, and the paving section 2 is an existing paving mechanism used to lay molten asphalt on the road surface. The paving section 2 can be connected to the vehicle body 1 via a lifting mechanism such as a hydraulic rod. During the paving process, the paving section 2 is positioned at the front of the vehicle body 1, and the vehicle body 1 moves backward. The height of the paving section 2 is adjusted via the lifting mechanism to control the asphalt paving thickness. Then, the paving section 2 is moved by controlling the vehicle body 1, thus enabling mobile asphalt paving. This is existing technology and will not be elaborated further. One of the core innovations of this invention is to provide a flattening mechanism. The flattening mechanism can be a pressure plate or similar structure, and the power component can be a reciprocating moving mechanism that independently controls the lifting and lowering of the flattening mechanism, such as an electric push rod. Alternatively, it can be a mechanism that controls the lifting and lowering of the flattening mechanism via an upper... While the hydraulic lifting mechanism adjusts the vertical height of the paving section 2, it simultaneously adjusts the vertical height of the compaction mechanism. The vertical height of the pressure plate relative to the paving section 2 is adjusted by the power component, thereby adjusting the pressure of the pressure plate on the paved road surface. The purpose of this arrangement is to place the compaction mechanism behind the paving section 2 during its travel and at both ends of the paving section 2, that is, to have an identical compaction mechanism at each end of the paving section 2. After the asphalt is laid on the paving section 2, the compaction mechanism will pass through the edge or connection point of the asphalt. The power component provides downward pressure to the compaction mechanism, thereby compacting and smoothing the edge or connection point of the asphalt during the asphalt laying process, thus eliminating the need for additional compaction and smoothing steps later.

[0032] Preferably, the flattening mechanism includes a first pressure roller 3 and a second pressure roller 4. A mounting plate 5 is fixedly connected to the paving section 2, and a plurality of first connecting rods 6 are fixedly connected to the mounting plate 5. The two ends of the first pressure roller 3 and the second pressure roller 4 are rotatably connected to a first connecting rod 6. Specifically, both the first pressure roller 3 and the second pressure roller 4 are cylindrical, and there are four first connecting rods 6. The top ends of the four first connecting rods 6 are fixed to the lower surface of the mounting plate 5. The two ends of the first pressure roller 3 and the second pressure roller 4 are rotatably connected to the bottom ends of the four first connecting rods 6 respectively. The purpose of this arrangement is to control the length of the first connecting rods 6 so that the lowest point of the circumference of the first pressure roller 3 and the second pressure roller 4 is at the same height as the surface of the paved asphalt. After the asphalt is laid, the first pressure roller 3 and the second pressure roller 4 will flatten the edge or connection position of the asphalt twice. During the flattening process, the first pressure roller 3 and the second pressure roller 4 will rotate, thereby converting sliding friction into rolling friction, so as to reduce the friction between the first pressure roller 3 and the asphalt surface and the friction between the second pressure roller 4 and the asphalt surface.

[0033] Furthermore, a plurality of first pressure rings 7 are evenly arranged on the circumferential surface of the first pressure roller 3, and a plurality of second pressure rings 8 are evenly arranged on the circumferential surface of the second pressure roller 4. A first gap 9 is formed between the plurality of first pressure rings 7, and the plurality of second pressure rings 8 and the plurality of first gaps 9 are arranged in a one-to-one correspondence in the forward direction. Specifically, the plurality of first pressure rings 7 are fitted onto the circumferential surface of the first pressure roller 3, and the plurality of second pressure rings 8 are fitted onto the circumferential surface of the second pressure roller 4, with the second pressure roller 4 located behind the travel of the first pressure roller 3. The purpose of this arrangement is that, compared to the surface contact area between the entire circumferential surface of the first pressure roller 3 and the asphalt, by replacing the first pressure roller 3 with the plurality of first pressure rings 7 to flatten the asphalt surface, the contact area of ​​the first pressure rings 7 with the asphalt surface is greatly reduced, thereby allowing the first pressure rings 7 to locally flatten the asphalt surface (forming multiple stripes in the asphalt area after being flattened by the plurality of first pressure rings 7, with the positions corresponding to the first pressure rings 7 being...). The flattened area (the position corresponding to the first gap 9 is the unflattened area), and the locally flattened area has greater pressure and better flattening effect than the first pressure roller 3 directly flattening. After the first pressure ring 7 flattens, since the second pressure roller 4 is located after the movement stroke of the first pressure roller 3, and multiple second pressure rings 8 are arranged one-to-one with multiple first gaps 9, the second pressure rings 8 on the second pressure roller 4 will flatten the unflattened area corresponding to the first gap 9 in the subsequent process. In this way, the asphalt edge or connection point can be fully covered and flattened, and the flattening effect is better than the secondary flattening effect of the first pressure roller 3 and the second pressure roller 4.

[0034] Furthermore, the axial dimension of the second pressure ring 8 is larger than the axial dimension of the first gap 9. The purpose of this setting is that the unflattened area left in the first gap 9 is in a convex state, so the unflattened area may collapse slightly to both sides, thereby increasing the lateral area of ​​the unflattened area. Since the axial dimension of the second pressure ring 8 is larger than the axial dimension of the first gap 9, the flattening area of ​​the pressure ring can be increased to ensure that the area corresponding to the first gap 9 is flattened by the second pressure ring 8.

[0035] During the flattening process between the first pressure ring 7 and the second pressure ring 8, asphalt may become trapped in the first gap 9 and the second gap 10. Obviously, this will affect the flattening quality. Furthermore, a second gap 10 is formed between the second pressure rings 8. Both the first gap 9 and the second gap 10 are equipped with cleaning mechanisms for scraping off the asphalt inside. Specifically, the cleaning mechanism can be a high-pressure spray gun, with its output end located within the first gap 9 and the second gap 10. The high-pressure gas blown out by the high-pressure spray gun can actively remove the asphalt inside the first gap 9 and the second gap 10.

[0036] In another preferred embodiment of the present invention, the cleaning mechanism includes a plurality of first scrapers 11, and a crossbar 12 is provided between two first connecting rods 6 on opposite sides of the mounting plate 5. One end of the first scraper 11 is fixed to the crossbar 12, and the other end of the first scraper 11 is in contact with the inner wall of the first gap 9 or the second gap 10 (one first scraper 11 is provided for each first gap 9 and the second gap 10). Specifically, the first scraper 11 includes a first horizontal section 1101, a vertical section 1102, and a second horizontal section 1103. The end of the first horizontal section 1101 is fixed to the crossbar 12. The vertical section 1102 connects the first horizontal section 1101 and the second horizontal section 1103. The end of the second horizontal section 1103 extends into the first gap 9 or the second gap 10. The end of the second horizontal section 1103 is provided with an arc-shaped surface, which is in contact with the outer surfaces of the first pressure roller 3 and the second pressure roller 4 (i.e., the annular inner walls of the first gap 9 and the second gap 10). The arc-shaped surface is located at the outermost edge of the first pressure roller 3 and the second pressure roller 4. The lower point is located on one side and behind the travel of the first pressure roller 3 and the second pressure roller 4. The purpose of this arrangement is that, during the movement of the paving section 2, the first pressure roller 3 and the second pressure roller 4 driven by the vehicle body 1, the first pressure roller 3 and the second pressure roller 4 will rotate. Since the first scraper 11 does not rotate, there will be a relative displacement between the first pressure roller 3 and the second pressure roller 4 and the first scraper 11. During the rotation of the first pressure roller 3 and the second pressure roller 4, the end of the second horizontal section 1103 will scrape off the asphalt mixed in the first gap 9 and the second gap 10, so as to achieve passive cleaning of the first gap 9 and the second gap 10.

[0037] Furthermore, a second scraper 13 is provided on the first scraper 11, and the end of the second scraper 13 is in contact with the outer circumferential surface of the first pressure ring 7 and the second pressure ring 8. Specifically, the second scraper 13 is provided on the second horizontal section 1103, and a second scraper 13 is provided on each side of a single first scraper 11 (the first scraper 11 on the edge may have only one second scraper 13; the following description refers to a single first scraper 11). The two second scrapers 13 are located on both sides of the two first scrapers 11, and the second scraper 13 is provided with an arc-shaped surface, which is in contact with the circumferential surface of the first pressure ring 7 and the second pressure ring 8. The purpose of this arrangement is that when the first pressure ring 7 and the second pressure ring 8 are flattened, they will rotate on their own. Since the second scraper 13 does not rotate, the second scraper 13 will scrape the surface of the first pressure ring 7 and the second pressure ring 8, thereby scraping off the asphalt on the surface of the first pressure ring 7 and the second pressure ring 8 to ensure the cleanliness of their surfaces.

[0038] In another embodiment of the present invention, a transmission rod 14 is provided on the second scraper 13, the transmission rod 14 is slidably disposed on the first scraper 11, a plurality of first magnets 15 are provided on both the first pressure ring 7 and the second pressure ring 8, and a second magnet 16 is provided on the transmission rod 14 through an extension portion, the second magnet 16 being located on the movement stroke of the first magnet 15. Specifically, the second horizontal section 1103 has a movable groove 17 inside. One end of the transmission rod 14 is slidably connected to the movable groove 17 through the extension. A first spring 18 is provided between the extension of the transmission rod 14 and the side wall of the movable groove 17. The first magnet 15 and the second magnet 16 are both permanent magnets. Four first magnets 15 are respectively provided in the two side walls of a single annular gap. The second magnets 16 are located on the movement stroke of the first magnets 15, and the polarities of their opposite faces are the same. The purpose of this arrangement is that during the flattening process, the first pressure roller 3 and the second pressure roller 4 will rotate, and the second horizontal section 1103 will scrape the asphalt inside the first gap 9 and the second gap 10 to the bottom of the second horizontal section 1103 and fall between the two second scrapers 13. When the first magnet 15 rotates to the same horizontal position as the second magnet 16... When the first magnet 15 and the second magnet 16 are in the same polarity, the two second magnets 16 and the two transmission rods 14 will move in opposite directions due to the repulsion between like polarities. This will cause the two second scrapers 13 on both sides of the second horizontal section 1103 to move towards the direction of the second horizontal section 1103 and compress the first spring 18. The opposing surfaces of the two second scrapers 13 can produce a squeezing effect on the scraped asphalt. On the one hand, this can reduce the lateral width of the scraped asphalt, making it easier for the subsequent second pressure ring 8 to flatten it. On the other hand, it can increase the compactness of the scraped asphalt to prevent it from collapsing to both sides. After the first magnet 15 and the second magnet 16 move away from each other, the repulsive force between them disappears, and the transmission rods 14 and the second scrapers 13 will automatically reset under the elastic force of the first spring 18.

[0039] Furthermore, after the end of the second horizontal section 1103 is cleaned from the first gap 9 or the second gap 10, some asphalt will adhere to the lower surface of the second horizontal section 1103. A shovel plate 19 is slidably arranged on the second horizontal section 1103, and a connecting rod 20 is arranged between the shovel plate 19 and the second scraper 13. Specifically, a guide rail 21 is provided on the lower surface of the second horizontal segment 1103, the upper surface of the scraper 19 is slidably connected to the guide rail 21, the upper surfaces of the two second scrapers 13 are fixedly connected to the first rotating shaft, and the lower surface of the scraper 19 is fixedly connected to the two second rotating shafts. The two ends of the connecting rod 20 are rotatably connected to the first rotating shaft and the second rotating shaft respectively. The purpose of this arrangement is that, in the initial state, the scraper 19 is located away from the end of the second horizontal segment 1103. During the process of the two second scrapers 13 moving towards each other, a pushing force is provided to the connecting rod 20, so that the two ends of the connecting rod 20 rotate around the first rotating shaft and the second rotating shaft respectively. The rotation of the connecting rod 20 will push the scraper 19 to move towards the end of the second horizontal segment 1103, thereby removing the asphalt attached to the lower surface of the second horizontal segment 1103. After the asphalt is removed, the second scrapers 13 reset and drive the scraper 19 to automatically reset.

[0040] In another preferred embodiment of the present invention, the shovel plate 19 includes a sliding part 1901 and a trapezoidal block 1902. A sliding rod 22 is provided on the trapezoidal block 1902. A stop block 23 is fixedly connected to the lower surface of the second horizontal section 1103. The sliding rod 22 passes through the sliding part 1901 and abuts against the stop block 23. A second spring 24 is provided between the trapezoidal block 1902 and the sliding part 1901. Specifically, the trapezoidal block 1902 is arranged upside down, with the longer side on top and the shorter side on the bottom. The inclined surface of the trapezoidal block 1902 faces the first gap 9 and the second gap 10. The trapezoidal block 1902 and the slide rod 22 form a T-shape. The sliding part 1901 slides with the guide rail 21. The second rotating shaft is fixed to the lower surface of the sliding part 1901. The purpose of this arrangement is that, in the initial state, the end of the slide rod 22 abuts against the stop block 23, and the second spring 24 is in an extended state. When the second scraper 13 drives the sliding part 1901 to move, it has the following stroke: First, in the initial state of sliding of the sliding part 1901, the trapezoidal block 1902 and the slide rod 22 are in a stationary state. The sliding of the sliding part 1901 will cause the second spring 24 to change from an extended state to a compressed state. Second, as the sliding part 1901 continues to slide, the sliding part 1901 will carry... The movable trapezoidal block 1902 slides synchronously towards the end of the second horizontal segment 1103, thereby removing the asphalt adhering to the lower surface of the second horizontal segment 1103 by the inclined surface of the trapezoidal block 1902. Thirdly, when the sliding part 1901 returns, it drives the trapezoidal block 1902 and the sliding rod 22 to slide in the opposite direction. When the sliding part 1901 returns to the initial position, the trapezoidal block 1902 and the sliding rod 22 will continue to slide a distance under the action of inertia, thereby causing the end of the sliding rod 22 away from the trapezoidal block 1902 to collide with the stop block 23, thereby generating vibration and shaking off the asphalt adhering to the inclined surface of the trapezoidal block 1902, so as to achieve passive cleaning of the trapezoidal block 1902. Fourthly, after the trapezoidal block 1902 and the sliding rod 22 have finished shaking, the trapezoidal block 1902 and the sliding rod 22 are stationary under the action of the second spring 24, preparing for the next movement.

[0041] Furthermore, the flattening mechanism also includes a leveling roller 25. A second connecting rod 26 is fixedly connected to the mounting plate 5. The leveling roller 25 is rotatably connected to the second connecting rod 26. The leveling roller 25 is located behind the movement stroke of the first pressure roller 3 and the second pressure roller 4. Specifically, there are two second connecting rods 26, which are symmetrically arranged about the mounting plate 5. The top ends of the two second connecting rods 26 are fixed to the lower surface of the mounting plate 5, and the other ends of the two second connecting rods 26 are rotatably connected to the two ends of the leveling roller 25, respectively. The radial dimension of the leveling roller 25 is the same as the outer diameter of the first pressure ring 7 and the second pressure ring 8. This arrangement allows the leveling roller 25 to perform secondary flattening on the area flattened by the first pressure ring 7 and the second pressure ring 8, thereby flattening the uneven areas remaining on the movement path of the first pressure ring 7 and the second pressure ring 8, playing a finishing role and improving the flattening effect of the flattening mechanism.

[0042] In another preferred embodiment of the present invention, the power assembly includes a first connecting rod 6 and a second connecting rod 26, both of which are spring-loaded telescopic rods. Specifically, the spring-loaded telescopic rods, i.e., the first connecting rod 6 and the second connecting rod 26, each include a first segment and a second segment that slide against each other. A spring is provided between the first segment and the second segment, and the first segment is located below the second segment. The two ends of the first pressure roller 3, the second pressure roller 4, and the leveling roller 25 are rotatably connected to the first segment, and the two ends of the crossbar 12 are fixed to the first segment. The purpose of this arrangement is that, since the first connecting rod 6 and the second connecting rod 26 are both spring-loaded telescopic rods, and their initial height is lower than the initial height of the paving section 2, the first segment will move upward under the pressure of the asphalt surface, thereby compressing the first segment. The connecting rod 6 and the second connecting rod 26 ensure that the first connecting rod 6 and the second connecting rod 26 are always under stress. Similarly, the first connecting rod 6 and the second connecting rod 26 provide a reaction force to the first pressure roller 3, the second pressure roller 4, and the leveling roller 25. This force is also the downward pressure force provided by the power component to the flattening component to achieve the flattening effect. The advantage of this setting is that when encountering extremely uneven areas, the first connecting rod 6 and the second connecting rod 26 will have a buffering effect and can adaptively adjust the length of the first connecting rod 6 and the second connecting rod 26 to avoid damage to the components of the flattening mechanism.

[0043] Preferably, the stiffness coefficient of the second connecting rod 26 is greater than that of the first connecting rod 6. That is, when the first pressure roller 3, the second pressure roller 4 and the leveling roller 25 are at the same vertical height, the pressure of the leveling roller 25 on the asphalt is greater than that of the first pressure roller 3 and the second pressure roller 4 on the asphalt. The greater extrusion pressure can make the leveling roller 25 have a better finishing effect.

[0044] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-pressure asphalt paving device, comprising a vehicle body and a paving section disposed on the vehicle body, characterized in that, The paving section is equipped with a flattening mechanism; The flattening mechanism is located at both ends of the paving section, and the flattening mechanism is located behind the movement stroke of the paving section; It also includes a power assembly for providing downward pressure to the flattening mechanism; The flattening mechanism includes a first pressure roller and a second pressure roller, and a mounting plate is fixedly connected to the paving section; Multiple first connecting rods are fixedly connected to the mounting plate, and the two ends of the first pressure roller and the second pressure roller are rotatably connected to one of the first connecting rods; A plurality of first pressure rings are evenly arranged on the circumferential surface of the first pressure roller, and a plurality of second pressure rings are evenly arranged on the circumferential surface of the second pressure roller. A first gap is formed between the plurality of first pressure rings, and the plurality of second pressure rings are arranged in a one-to-one correspondence with the plurality of first gaps. A second gap is formed between the second pressure rings, and a cleaning mechanism for scraping off the asphalt inside the first gap and the second gap is provided inside both the first gap and the second gap; The cleaning mechanism includes a first scraper, a crossbar is provided between the first connecting rods, one end of the first scraper is fixed to the crossbar, and the end of the first scraper is in contact with the inner wall of the first gap and the second gap. The first scraper is provided with a second scraper, and the other end of the second scraper is fitted and connected to the outer circumferential surface of the first pressure ring and the second pressure ring. The second scraper is provided with a transmission rod, which is slidably disposed on the first scraper. Both the first pressure ring and the second pressure ring are provided with a plurality of first magnets. The transmission rod is provided with a second magnet through an extension, and the second magnet is located on the movement stroke of the first magnet. The second horizontal section has a movable groove inside, one end of the transmission rod is slidably connected to the movable groove through the extension, and a first spring is provided between the extension of the transmission rod and the side wall of the movable groove. A shovel plate is slidably mounted on the second horizontal section, and a connecting rod is provided between the shovel plate and the second scraper plate; The lower surface of the second horizontal section is provided with a guide rail, the upper surface of the shovel plate is slidably connected to the guide rail, the upper surface of the two second scrapers is fixedly connected to the first rotating shaft, the lower surface of the shovel plate is fixedly connected to two second rotating shafts, and the two ends of the connecting rod are rotatably connected to the first rotating shaft and the second rotating shaft respectively. The shovel plate includes a sliding joint and a trapezoidal block. A sliding rod is provided on the trapezoidal block. A stop block is fixed to the lower surface of the second horizontal section. The sliding rod passes through the sliding joint and abuts against the stop block. A second spring is provided between the trapezoidal block and the sliding joint.

2. The high-pressure asphalt paving device according to claim 1, characterized in that, The axial dimension of the second pressure ring is greater than the radial dimension of the first gap.

3. A high-pressure asphalt paving device according to claim 2, characterized in that, The flattening mechanism also includes a leveling roller. A second connecting rod is fixedly connected to the mounting plate. The leveling roller is rotatably connected to the second connecting rod. The leveling roller is located behind the movement stroke of the first pressure roller and the second pressure roller.

4. A high-pressure asphalt paving device according to claim 3, characterized in that, The power assembly includes a first connecting rod and a second connecting rod, both of which are spring telescopic rods.

5. A high-pressure asphalt paving device according to claim 4, characterized in that, The stiffness coefficient of the second connecting rod is greater than that of the first connecting rod.

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