An asphalt overlay device and method for a cement pavement

Abstract

The application discloses a cement pavement asphalt overlay device and an overlay method, and relates to the technical field of asphalt laying. The cement pavement asphalt overlay device comprises a machine body, a rolling wheel rotatably connected to the machine body, a water flow pipe, a plurality of heating pipes arranged around one of the rolling wheels, a first connecting pipe, a second connecting pipe, a water repelling block and a driving assembly. The water flow pipes around the same rolling wheel are respectively communicated with the same first connecting pipe. The second connecting pipe is connected with adjacent first connecting pipes. The water repelling block is axially slidably arranged in one of the second connecting pipes, and the outer circumferential side of the water repelling block is in sliding contact with the inner wall of the second connecting pipe. The water repelling block is formed with a water passage, and the water repelling block is slidably connected with a blocking block used for blocking the water passage. When the rolling wheel rotates, the driving assembly drives the water repelling block to reciprocally slide in the second connecting pipe. The control assembly is arranged in the second connecting pipe, and when the water repelling block reciprocally moves, the control assembly controls the blocking block to be opened at intervals and block the water passage. The application can improve the rolling and compacting degree of the asphalt layer.

Description

Technical Field

[0001] The present application relates to the technical field of asphalt paving, and in particular to an asphalt paving device and a paving method for cement pavement. Background Art

[0002] Asphalt overlay on cement pavement involves laying an asphalt surface layer on top of an existing cement pavement. Common methods include direct overlay and rubble overlay. Direct overlay involves pouring asphalt directly onto the cement pavement, spreading it flat, and then compacting it with a paving device like a roller to create a dense, dense layer.

[0003] Currently, a Chinese utility model patent with publication number CN203923863U discloses a small road roller, comprising a four-wheel loader body and a roller assembly located in front of the body's front wheels. The roller assembly comprises a main shaft and a roller sleeved around the main shaft. The main shaft comprises left and right external support sections and a central roller support section. The rollers are mounted on the roller support sections of the main shaft. The left and right external support sections of the main shaft are sleeved with bearings, and the outer rings of the bearings are sleeved with external bearing cartridges. The external bearing cartridges are connected to a connecting rod, the other end of which is hinged to a horizontal shaft mounted on the front end of the front frame. The rollers use the small loader body as a running mechanism.

[0004] However, in a low-temperature environment, the temperature of the asphalt drops quickly, which may cause the asphalt layer to be not compacted enough during rolling, affecting the quality of the additional asphalt layer. Summary of the Invention

[0005] In order to improve the compaction degree of the asphalt layer, the present application provides an asphalt paving device and a paving method for a cement pavement.

[0006] In a first aspect, the present application provides an asphalt paving device for a cement pavement, which adopts the following technical solution:

[0007] An asphalt paving device for cement pavement, comprising

[0008] body;

[0009] Rolling wheels are symmetrically arranged and rotatably connected to the machine body, and the rolling wheels roll on the asphalt layer;

[0010] A water flow pipe is provided on the machine body, and the water flow pipe is provided in plurality and is arranged around the rolling wheel;

[0011] A heating pipe is disposed in the water flow pipe, wherein the heating pipe is provided in plurality and is disposed around one of the rolling wheels, the heating pipe is coaxially disposed with the water flow pipe, and the outer diameter of the heating pipe is smaller than the inner diameter of the water flow pipe;

[0012] A first connecting pipe is symmetrically arranged on the machine body, and the water flow pipes surrounding the same rolling wheel are respectively connected to the same first connecting pipe;

[0013] a second connecting pipe, symmetrically arranged on the body, the second connecting pipe connecting the adjacent first connecting pipe;

[0014] a water-repelling block sliding axially in one of the second connecting tubes, with an outer peripheral side of the water-repelling block in sliding contact with an inner wall of the second connecting tube;

[0015] The water-repelling block is formed with a plurality of water openings, and the water-repelling block is slidably connected to a blocking block for blocking the water openings;

[0016] a driving assembly, disposed on the machine body, and driving the water-displacing block to slide back and forth in the second connecting pipe when the crushing wheel rotates;

[0017] The control component is arranged on the second connecting pipe. When the water-displacing block reciprocates, the control component controls the blocking block to open at intervals and block the water outlet.

[0018] By adopting the above technical solution, the heating pipe heats the water flow in the water flow pipe. At this time, the water flow dissipates heat, heating the rolling wheel and the asphalt layer, and improving the compaction of the asphalt layer by the rolling wheel. At the same time, when the vehicle body is driving, the drive component drives the water-displacing block to move back and forth towards or away from the rolling wheel on the front side of the vehicle. At the same time, when the water-displacing block reciprocates, the control component controls the blocking block to block or open the water outlet. When the water outlet is open, the water-displacing block slides, pushing the water flow, allowing the heated water flow to expand the range of heat dissipation and heating, further reducing the rate of temperature drop of the asphalt layer, and improving the compaction of the asphalt layer.

[0019] Optionally, the control assembly includes a first pushing block, a second pushing block and a connecting block;

[0020] The connecting block is symmetrically arranged on the blocking block and protrudes to the outer peripheral side of the water-repelling block, and the inner wall of the second connecting pipe is formed with a corresponding connecting groove for the connecting block to slide;

[0021] The first pushing block is arranged on one of the connecting groove walls, and the first pushing block is formed with a first pushing surface corresponding to the corresponding connecting block. When the connecting block slides on the first pushing surface, the blocking block blocks the water outlet;

[0022] The second pushing block is arranged on the other wall of the connecting groove, the first pushing block and the second pushing block are staggered and respectively located near the end of the connecting groove, and the second pushing block is formed with a second pushing surface corresponding to the corresponding connecting block. When the connecting block slides on the second pushing surface, the blocking block opens the water outlet.

[0023] By adopting the above technical solution, when the connecting block slides on the first pushing surface, the blocking block blocks the water outlet; when the connecting block slides on the second pushing surface, the blocking block slides to open the water outlet.

[0024] Optionally, the water-repelling block is formed with a sliding hole for the blocking block to slide up and down;

[0025] The sliding hole wall is evenly spaced with a plurality of sliding teeth, and the side wall of the blocking block is provided with connecting teeth, which mesh with the sliding teeth. When the blocking block slides in the sliding hole, the connecting teeth slide on the sliding teeth.

[0026] By adopting the above technical solution, the sliding teeth abut against the connecting teeth, which is conducive to maintaining the state of the blocking block.

[0027] Optionally, the driving assembly includes a driving ring, a connecting ring, a connecting gear, a connecting rack, a supporting ring, a power sleeve, a driving helical gear, and a connecting helical gear;

[0028] The connecting ring slides in the second connecting tube and is coaxially arranged, and the end of the connecting ring is connected and fixed to the blocking block;

[0029] The power sleeve is mounted on the outer circumference of the second connecting pipe, and the power sleeve is rotatably connected to the second connecting pipe via a rotary seal;

[0030] The bottom of the body is rotatably connected to a traveling wheel, the driving helical gear is arranged on the traveling wheel, the connecting helical gear is arranged on the outer periphery of the power sleeve, and the driving helical gear is meshed with the connecting helical gear;

[0031] A mounting hole is formed on the outer circumference of the second connecting pipe along the circumferential direction, the mounting hole is connected to the second connecting pipe, the second pushing block is close to the mounting hole, and the first pushing block is away from the mounting hole;

[0032] The support ring is rotatably connected to a hole wall on one side of the mounting hole, and the outer peripheral side of the support ring is in sliding contact with the inner peripheral side wall of the power sleeve;

[0033] The connecting gear is rotatably connected to the support ring and is located in the mounting hole. The inner circumference of the power sleeve is provided with power teeth, and the connecting gear is meshed with the power teeth.

[0034] The driving ring is rotatably connected to the second connecting pipe and is coaxially arranged, and the driving ring is threadedly connected to the outer peripheral side of the connecting ring;

[0035] The connecting rack is circumferentially arranged on the outer peripheral side of the driving ring, and the connecting gear is meshed with the connecting rack;

[0036] The support ring is slidably provided with a plug-in column, and the inner wall of the power sleeve is formed with a plug-in groove corresponding to the plug-in column;

[0037] The support ring is provided with an elastic driving member. When the plug-in column and the plug-in slot are aligned with each other, the elastic driving member drives the plug-in column to be inserted into the plug-in slot. At this time, the power sleeve and the support ring are linked.

[0038] The second connecting tube is slidably connected to a control ring along the circumferential direction, and a control block is provided on the outer circumference of the plug-in column. The control block is inclined to form a control surface corresponding to the control ring. When the control ring slides on the control surface in a direction close to the plug-in column, the plug-in column is disengaged from the plug-in slot;

[0039] The second connecting pipe includes a toggle assembly, and when the connecting block moves to a side close to the mounting hole, the toggle assembly toggles the control ring to slide on the control surface;

[0040] When the connecting block moves to a side away from the mounting hole, the toggling assembly toggles the control ring away from the control surface.

[0041] By adopting the above technical solution, when the plug-in column is inserted into the plug-in slot, the support ring and the power sleeve are linked, and then when the power sleeve rotates, the water-displacing block moves toward the mounting hole; when the plug-in column is disengaged from the plug-in slot, the support ring and the power sleeve rotate relative to each other, and then when the power sleeve rotates, the water-displacing block moves away from the mounting hole.

[0042] Optionally, the toggle assembly includes a toggle bar, a first toggle block and a second toggle block;

[0043] The toggle bar is axially slidably connected to the second connecting tube, and the toggle bar is connected to the control ring;

[0044] The first shift block and the second shift block are symmetrically arranged on the same side of the shift bar and respectively protrude into the connecting groove, and the connecting block is located between the first shift block and the second shift block;

[0045] When the connecting block pushes the first shifting block away from the mounting hole, the control ring moves away from the control surface;

[0046] When the connecting block pushes the second shifting block to approach the mounting hole, the control ring slides on the control surface.

[0047] By adopting the above technical solution, when the connecting block pushes the first shifting block, the plug-in post is disengaged from the plug-in slot; when the connecting block pushes the second shifting block and the plug-in post and the plug-in slot are aligned with each other, the plug-in post is inserted into the plug-in slot.

[0048] Optionally, the elastic driving member includes a driving spring, a limiting block is provided on the outer circumference of the plug-in column, and a limiting groove for sliding of the limiting block is formed in the support ring;

[0049] The driving spring is sleeved on the outer peripheral side of the plug-in column, one end of the driving spring abuts against the side of the limiting block away from the power sleeve, and the other end abuts against the wall of the limiting groove.

[0050] By adopting the above technical solution, the driving spring has a simple structure and is easy to use.

[0051] Optionally, the plug-in column is a square column structure, and a curved surface structure is formed on a side of the plug-in column close to the power sleeve.

[0052] By adopting the above technical solution, the arc surface structure of the plug-in column slides on the power sleeve, reducing the friction encountered by the plug-in column when sliding.

[0053] In a second aspect, the present application provides a method for overlaying asphalt on a cement pavement, which adopts the following technical solution:

[0054] A method for overlaying asphalt on a cement pavement comprises the following steps:

[0055] S1: Cleaning old cement concrete pavement;

[0056] S2: Use rubber asphalt synchronous spreader to spread the asphalt layer;

[0057] S3: The machine body travels on the asphalt layer, so that the rolling wheel rolls the asphalt layer.

[0058] By adopting the above technical solution, when the asphalt layer is laid, the asphalt layer is rolled by the rolling wheel, and the water flow in the water flow pipe heats the rolling wheel and the asphalt layer, thereby increasing the degree of water ingress into the asphalt layer.

[0059] In summary, this application has at least one of the following beneficial effects:

[0060] 1. The heating pipe heats the water flow in the water flow pipe. At this time, the water flow releases heat to heat the rolling wheel and the asphalt layer, thereby improving the compaction of the asphalt layer by the rolling wheel;

[0061] 2. The sliding teeth abut against the connecting teeth, which is beneficial to maintaining the state of the blocking block. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Figure 1Schematic diagram of the external structure of an embodiment of the present application;

[0063] Figure 2 This is a schematic cross-sectional view of the connection between the water flow pipe and the heating pipe in an embodiment of the present application;

[0064] Figure 3 is a schematic internal cross-sectional view of an embodiment of the present application;

[0065] Figure 4 yes Figure 3 A magnified schematic diagram of part A;

[0066] Figure 5 yes Figure 3 An enlarged schematic diagram of part B;

[0067] Figure 6 This is a schematic diagram of the connection structure between the water-repelling block and the blocking block in an embodiment of the present application;

[0068] Figure 7 2 is a schematic diagram of the connection structure between the driving helical gear and the connecting helical gear in an embodiment of the present application;

[0069] Figure 8 yes Figure 7 Enlarged schematic diagram of part C.

[0070] Figure numerals: 1, machine body; 11, crushing wheel; 12, water flow pipe; 13, heating pipe; 14, first connecting pipe; 15, traveling wheel; 16, rotating shaft; 2, second connecting pipe; 21, connecting groove; 22, mounting hole; 23, control ring; 3, water-displacing block; 31, water outlet; 32, sliding tooth; 33, sliding hole; 4, blocking block; 41, connecting tooth; 5, driving ring; 51, connecting ring; 52, connecting gear; 53, connecting rack; 54, support Ring; 541, plug-in column; 542, control block; 543, control surface; 544, drive spring; 545, limit block; 546, limit groove; 55, power sleeve; 551, plug-in groove; 552, power tooth; 56, drive bevel gear; 57, connecting bevel gear; 6, connecting block; 61, first push block; 611, first push surface; 62, second push block; 621, second push surface; 7, toggle bar; 71, first toggle block; 72, second toggle block. DETAILED DESCRIPTION

[0071] The following is combined with Figure 1-8 This application is described in further detail.

[0072] The embodiment of the present application discloses an asphalt paving device for cement pavement. Figure 1The paving device includes a machine body 1 and rolling wheels 11. The bottom of the machine body 1 is symmetrically formed with two receiving grooves along the road surface. Two rolling wheels 11 correspond to each of the receiving grooves. The rolling wheels 11 are rotationally connected to the machine body 1 and protrude beyond the receiving grooves. The machine body 1 is equipped with a drive motor. During operation, the drive motor drives the rolling wheels 11 to roll on top of the asphalt layer, allowing the machine body 1 to travel along the direction of the asphalt road.

[0073] See also Figure 2 The overlaying device also includes a water flow pipe 12 and a heating pipe 13. The water flow pipe 12 is fixed to the lateral wall of the receiving tank. There are multiple water flow pipes 12, evenly spaced along the circumference. Water is poured into the water flow pipe 12, which surrounds the rolling wheel 11 and extends parallel to the central axis of the rolling wheel 11. The heating pipe 13 is fixed to the machine body 1 and located within the water flow pipe 12. The heating pipe 13 is coaxial with the water flow pipe 12, and the outer diameter of the heating pipe 13 is smaller than the inner diameter of the water flow pipe 12. There are multiple heating pipes 13 and they correspond one-to-one to the water flow pipes 12 surrounding the front side of the body 1. When in use, the body 1 provides energy for the heating pipes 13, so that the heating pipes 13 heat the water flow in the water flow pipes 12. At this time, the water flow emits heat to heat the rolling wheel 11, thereby increasing the temperature of the asphalt layer during rolling. The heat emitted by the water flow can flow downward along the outer wall of the rolling wheel 11, heating the asphalt layer and increasing the temperature of the asphalt layer.

[0074] See also Figure 2 and Figure 3 The paving device also includes a first connecting pipe 14 and a second connecting pipe 2. There are two groups of first connecting pipes 14, and each group of first connecting pipes 14 corresponds to a rolling wheel 11. Each group of first connecting pipes 14 has two and are symmetrically arranged on both sides of the rolling wheel 11. The first connecting pipes 14 are fixed to the body 1 and surround the rolling wheel 11. The first connecting pipes 14 are connected to the water flow pipe 12. There are two second connecting pipes 2 and they are symmetrically arranged. There is a one-to-one correspondence between the two groups of first connecting pipes 14. The two ends of each second connecting pipe 2 are respectively connected to two opposite first connecting pipes 14. At this time, water can circulate in the first connecting pipe 14, the second connecting pipe 2, and the water flow pipe 12.

[0075] See also Figure 3 and Figure 4The paving device also includes a water-displacing block 3, which slides within one of the second connecting tubes 2. The outer periphery of the water-displacing block 3 is in sliding contact with the peripheral wall of the second connecting tube 2. When the water-displacing block 3 slides toward the rolling wheel 11 on the side facing the front of the vehicle, the water-displacing block 3 pushes the water to flow, causing the water in the second connecting tube 2 to flow into the first connecting tube 14. The water in the water flow tube 12 is then directed through another water flow tube 12 that is opposite to the first connecting tube 14 and the second connecting tube 2, and flows into the water flow tube 12 surrounding the other rolling wheel 11. This facilitates the flow of the heated water, thereby heating the other rolling wheel 11.

[0076] The water-repelling block 3 has multiple water openings 31 and a sliding hole 33 in the center. The blocking block 4 slides vertically through the sliding hole 33, with the sliding direction of the blocking block 4 being perpendicular to the central axis of the water-repelling block 3. The blocking block 4 has a grid-like structure and blocks the water openings 31 during use.

[0077] The paving device further includes a control component. When the water-repelling block 3 slides on the second connecting pipe 2 , the control component controls the blocking block 4 to slide, thereby opening or closing the water port 31 .

[0078] See also Figure 4 and Figure 5 The control assembly includes a first push block 61, a second push block 62, and a connecting block 6. Two connecting blocks 6 are symmetrically fixed to the outer periphery of the water-displacing block 3. The inner wall of the second connecting pipe 2 is formed with connecting grooves 21 corresponding to the connecting blocks 6, and the connecting blocks 6 slide in the connecting grooves 21.

[0079] The first push block 61 is fixed to the groove wall of the lower connecting groove 21 away from the groove opening, and the first push block 61 is located away from the front side crushing wheel 11 (the crushing wheel 11 is located at the bottom of the connecting groove 21). Figure 3 The second push block 62 is fixed to the groove wall of the upper connecting groove 21 away from the groove opening, and the second push block 62 is located near the front-side crushing wheel 11. The first push block 61 and the second push block 62 are offset from each other and are respectively located near the ends of the connecting groove 21.

[0080] The first pushing block 61 is inclined to form a first pushing surface 611 corresponding to the corresponding connecting block 6, when the blocking block 4 moves away from the front side rolling wheel 11 (rolling wheel 11 is in the Figure 3 When the water-repelling block 3 slides toward the front-side rolling wheel 11, the water flow in the second connecting pipe 2 is pushed. At the same time, the connecting block 6 located above slides in contact with the groove wall of the connecting groove 21 away from the groove opening.

[0081] The second pushing block 62 is inclined to form a second pushing surface 621 corresponding to the corresponding connecting block 6. When the blocking block 4 moves toward the front side rolling wheel 11 (rolling wheel 11 is at Figure 3 When the water-displacing block 3 slides away from the front-end rolling wheel 11, the water in the second connecting pipe 2 passes through the water opening 31, lowering the water-displacing block 3 and pushing the water flow when the water-displacing block 3 moves away from the front-end rolling wheel 11. At the same time, the connecting block 6 located below slides in contact with the groove wall of the connecting groove 21 away from the groove opening.

[0082] See also Figure 4 and Figure 6 A plurality of sliding teeth 32 are evenly fixed to the vertical wall of one side of the sliding hole 33. Connecting teeth 41 are fixedly connected to the side wall of the blocking block 4, and the connecting teeth 41 mesh with the sliding teeth 32. The sliding teeth 32 and the connecting teeth 41 are triangular teeth and are made of a resilient material, such as stainless steel.

[0083] When the connecting block 6 slides on the first pushing surface 611 or the second pushing surface 621 (the second pushing surface 621 is Figure 5 ), so that when the blocking block 4 slides up and down in the sliding hole 33, the connecting tooth 41 slides on the sliding tooth 32, which is beneficial to maintaining the state of the blocking block 4 and reducing the possibility of the blocking block 4 moving up and down to block the water outlet 31 when the connecting block 6 is separated from the first pushing surface 611 and the second pushing surface 621.

[0084] See also Figure 3 and Figure 4 The paving device also includes a driving component. When the body 1 is traveling, the driving component drives the water-displacing block 3 to reciprocate toward or away from the rolling wheel 11 in the direction of the vehicle head.

[0085] See also Figure 7 and Figure 8 The driving assembly includes a driving ring 5, a connecting ring 51, a connecting gear 52, a connecting rack 53, a supporting ring 54 (the supporting ring 54 is Figure 5 ), power sleeve 55, driving bevel gear 56 and connecting bevel gear 57.

[0086] The power sleeve 55 is provided on the water supply block 3 (the water supply block 3 is Figure 4The power sleeve 55 is rotatably connected to the second connecting pipe 2 via a rotating seal. A rotating shaft 16 is rotatably connected to the bottom of the machine body 1. Traveling wheels 15 are fixed to the outer periphery of the rotating shaft 16, rolling on the ground. A driving bevel gear 56 is fixed to the outer periphery of the rotating shaft 16, and a connecting bevel gear 57 is fixed to the outer periphery of the power sleeve 55. The driving bevel gear 56 meshes with the connecting bevel gear 57. When the machine body 1 is moving, the driving bevel gear 56 drives the power sleeve 55 to rotate via the connecting bevel gear 57.

[0087] See also Figure 3 and Figure 4 The connecting ring 51 is a hollow cylindrical structure. The connecting ring 51 slides in the second connecting pipe 2 and is coaxially arranged. The end of the connecting ring 51 away from the front side rolling wheel 11 is fixedly connected to the blocking block 4. When water flows through the water inlet 31, the water can flow through the connecting ring 51.

[0088] See also Figure 4 and Figure 5 A mounting hole 22 is formed circumferentially on the outer side of the second connecting pipe 2. The mounting hole 22 is connected to the second connecting pipe 2. The mounting hole 22 is located between the front side rolling wheel 11 and the water-displacing block 3. The second pushing block 62 is located close to the mounting hole 22, and the first pushing block 61 is located away from the mounting hole 22.

[0089] The drive ring 5 is rotatably connected to the second connecting tube 2 and positioned within the mounting hole 22. The end of the drive ring 5 is in sliding contact with the wall of the mounting hole 22, and the drive ring 5 is coaxially arranged with the second connecting tube 2. The inner sidewall of the drive ring 5 is threadedly connected to the outer sidewall of the connecting ring 51. When the drive ring 5 rotates forward, the connecting ring 51 drives the water-repelling block 3 to slide toward the mounting hole 22. When the drive ring 5 rotates backward, the connecting ring 51 drives the water-repelling block 3 to slide away from the mounting hole 22.

[0090] The support ring 54 is rotatably connected to one side wall of the mounting hole 22. The support ring 54 is located between the power sleeve 55 and the drive ring 5, and the outer peripheral side of the support ring 54 is in sliding contact with the inner peripheral side wall of the power sleeve 55. The support ring 54 is coaxially arranged with the second connecting tube 2, and the support ring 54 can rotate about the central axis of the second connecting tube 2. The connecting gear 52 is rotatably connected to the end of the support ring 54 and is located in the mounting hole 22. Power teeth 552 are circumferentially provided on the inner peripheral side wall of the power sleeve 55, and the connecting gear 52 and the power teeth 552 are meshed with each other. The connecting rack 53 is an annular structure and is fixed to the outer peripheral side of the drive ring 5. The connecting gear 52 meshes with the connecting rack 53.

[0091] The support ring 54 is formed with a through-hole, the central axis of which is perpendicular to the central axis of the second connecting tube 2. A square columnar plug post 541 is provided on the support ring 54. The plug post 541 slides within the through-hole and is longer than the depth of the hole. A plug slot 551 is formed on the inner wall of the power sleeve 55, with the plug post 541 corresponding to the plug slot 551.

[0092] A limiting block 545 is fixedly connected to the outer peripheral side of the plug-in column 541, and a limiting groove 546 is provided in the hole wall around the through hole. The limiting block 545 slides in the limiting groove 546 to limit the plug-in column 541 from leaving the through hole.

[0093] The support ring 54 is equipped with an elastic drive member, namely a drive spring 544. The drive spring 544 is sleeved around the outer periphery of the plug post 541. One end of the drive spring 544 abuts the side of the limit block 545 away from the power sleeve 55, while the other end abuts the wall of the limit slot 546. The plug post 541 has an arcuate structure formed on the side of the power sleeve 55. When the drive spring 544 is released, it pushes the plug post 541 toward the power sleeve 55 until the arcuate structure of the plug post 541 abuts the inner sidewall of the power sleeve 55. When the power sleeve 55 rotates, the arcuate structure of the plug post 541 slides along the inner sidewall of the power sleeve 55 until the plug post 541 and the insertion slot 551 are aligned. At this point, the drive spring 544 releases, pushing the plug post 541 into the insertion slot 551, and the support ring 54 and the power sleeve 55 enter a linked state.

[0094] The second connecting tube 2 is slidably connected to a control ring 23, which is coaxially arranged with the second connecting tube 2. A control block 542 is fixedly connected to the outer peripheral side of the plug-in column 541, and the control block 542 is inclined to form a control surface 543 corresponding to the control ring 23. When the control ring 23 slides on the control surface 543 in the direction close to the plug-in column 541, the control ring 23 pushes the control block 542, so that the plug-in column 541 is disengaged from the plug-in slot 551, and the driving spring 544 enters a compressed state. When the control ring 23 slides in the direction away from the plug-in column 541, the control ring 23 moves away from the control surface 543, and the driving spring 544 is released, pushing the plug-in column 541 to move toward the power sleeve 55.

[0095] The second connecting tube 2 includes a shift assembly, which includes a shift bar 7 , a first shift block 71 and a second shift block 72 .

[0096] The toggle bar 7 is fixedly connected to the control ring 23. The length of the toggle bar 7 is parallel to the length of the second connecting tube 2. The toggle bar 7 slides axially along the second connecting tube 2, adjacent to the connecting groove 21. A first toggle block 71 and a second toggle block 72 are symmetrically fixed to the toggle bar 7 on the side near the central axis of the second connecting tube 2. The first toggle block 71 and the second toggle block 72 each protrude into the connecting groove 21. The connecting block 6, the first push block 61, and the second connecting block 6 are respectively located between the first toggle block 71 and the second toggle block 72.

[0097] The first shift block 71 is located on the side of the second shift block 72 away from the mounting hole 22. When the connecting block 6 abuts and pushes the first shift block 71 away from the mounting hole 22, the control ring 23 moves away from the control surface 543. At this time, the driving spring 544 pushes the plug post 541 to slide toward the power sleeve 55, so that the plug post 541 is inserted into the insertion groove 551. When the connecting block 6 abuts and pushes the second shift block 72 toward the mounting hole 22, the control ring 23 slides on the control surface 543, and the plug post 541 is disengaged from the insertion groove 551.

[0098] The implementation principle of the asphalt paving device for cement pavement in the embodiment of the present application is as follows:

[0099] When the vehicle body 1 is in motion, the power sleeve 55 rotates, causing the connecting ring 51 to drive the water-displacing block 3 to slide within the second connecting tube 2. When the connecting ring 51 moves away from the mounting hole 22 until the connecting block 6 abuts and pushes the first displacing block 71 away from the mounting hole 22, the control ring 23 moves away from the control surface 543. At this time, the plug-in column 541 inserts into the plug-in slot 551, the power sleeve 55 and the support ring 54 enter a linkage state, and the connecting gear 52 enters a state of stopped rotation. Subsequently, when the power sleeve 55 rotates, the connecting gear 52 rotates, causing the drive ring 5 to drive the connecting ring 51 closer to the mounting hole 22; at the same time, the water inlet 31 is blocked by the blocking block 4, and the sliding of the water-displacing block 3 pushes the water flow, causing the water heated by the heating tube 13 to flow toward the water flow tube 12 away from the front of the vehicle.

[0100] When it moves toward the mounting hole 22 until the connecting block 6 abuts and pushes the second shift block 72 toward the mounting hole 22, the control ring 23 slides on the control surface 543. At this time, when the plug-in column 541 is disengaged from the plug-in groove 551, the support ring 54 and the power sleeve 55 enter a relative rotation state. Thereafter, when the power sleeve 55 rotates, the connecting gear 52 can rotate on itself, thereby driving the drive ring 5 to rotate through the connecting rack 53, so that the connecting ring 51 drives the water-diverting block 3 to move away from the mounting hole 22. At this time, the blocking block 4 opens the water outlet 31, and water flows through the water outlet 31.

[0101] On the other hand, the present application discloses a method for overlaying asphalt on a cement pavement, comprising the following steps:

[0102] Step 1: Clean the old cement concrete pavement;

[0103] Step 2: Use a rubber asphalt synchronous spreader to spread an asphalt layer on the old cement concrete pavement;

[0104] Step 3: The machine body 1 travels over the asphalt layer, rolling the asphalt layer. At this time, the heating pipe 13 heats the water flow in the water flow pipe 12. At this time, the water flow dissipates heat, heats the rolling wheel 11 and the asphalt layer, and improves the compaction of the asphalt layer.

[0105] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An asphalt paving device for a cement pavement, characterized by: include Body (1); Rolling wheels (11) are symmetrically arranged and rotatably connected to the machine body (1), and the rolling wheels (11) roll on the asphalt layer; A water flow pipe (12) is arranged on the machine body (1), and there are a plurality of water flow pipes (12) arranged around the rolling wheel (11); A heating pipe (13) is arranged in the water flow pipe (12), there are multiple heating pipes (13) and they are arranged around one of the rolling wheels (11), the heating pipe (13) and the water flow pipe (12) are coaxially arranged, and the outer diameter of the heating pipe (13) is smaller than the inner diameter of the water flow pipe (12); A first connecting pipe (14) is symmetrically arranged on the machine body (1), and the water flow pipes (12) surrounding the same rolling wheel (11) are respectively connected to the same first connecting pipe (14); A second connecting pipe (2) is symmetrically arranged on the machine body (1), and the second connecting pipe (2) is connected to the adjacent first connecting pipe (14); A water-displacing block (3) slides axially in one of the second connecting tubes (2), and an outer peripheral side of the water-displacing block (3) is in sliding contact with an inner tube wall of the second connecting tube (2); The water-repelling block (3) is formed with a plurality of water openings (31), and the water-repelling block (3) is slidably connected to a blocking block (4) for blocking the water openings (31); A driving assembly is provided on the machine body (1), and when the rolling wheel (11) rotates, the driving assembly drives the water-displacing block (3) to slide back and forth in the second connecting pipe (2); A control component is provided on the second connecting pipe (2), and when the water-displacing block (3) reciprocates, the control component controls the blocking block (4) to open and close the water opening (31); The control assembly comprises a first pushing block (61), a second pushing block (62) and a connecting block (6); The connecting block (6) is symmetrically arranged on the blocking block (4) and protrudes to the outer peripheral side of the water-repelling block (3); the inner wall of the second connecting pipe (2) is formed with a corresponding connecting groove (21) for the connecting block (6) to slide; The first pushing block (61) is arranged on a groove wall of one of the connecting grooves (21), and the first pushing block (61) is formed with a first pushing surface (611) corresponding to the corresponding connecting block (6). When the connecting block (6) slides on the first pushing surface (611), the blocking block (4) blocks the water outlet (31); The second pushing block (62) is arranged on the groove wall of the other connecting groove (21); the first pushing block (61) and the second pushing block (62) are staggered and respectively located near the end of the connecting groove (21); the second pushing block (62) is formed with a second pushing surface (621) corresponding to the corresponding connecting block (6); when the connecting block (6) slides on the second pushing surface (621), the blocking block (4) opens the water outlet (31).

2. The asphalt paving device for cement pavement according to claim 1, characterized in that: The water-repelling block (3) is formed with a sliding hole (33) for the blocking block (4) to slide up and down; The sliding hole (33) has a plurality of sliding teeth (32) evenly spaced apart on its wall, and the blocking block (4) has a connecting tooth (41) on its side wall. The connecting tooth (41) is engaged with the sliding tooth (32), and when the blocking block (4) slides in the sliding hole (33), the connecting tooth (41) slides on the sliding tooth (32).

3. The asphalt paving device for cement pavement according to claim 1, characterized in that: The driving assembly comprises a driving ring (5), a connecting ring (51), a connecting gear (52), a connecting rack (53), a supporting ring (54), a power sleeve (55), a driving helical gear (56), and a connecting helical gear (57); The connecting ring (51) slides in the second connecting tube (2) and is coaxially arranged, and the end of the connecting ring (51) is connected and fixed to the blocking block (4); The power sleeve (55) is sleeved on the outer peripheral side of the second connecting pipe (2), and the power sleeve (55) is rotatably connected to the second connecting pipe (2) via a rotary seal; The bottom of the machine body (1) is rotatably connected to a traveling wheel (15), the driving bevel gear (56) is arranged on the traveling wheel (15), the connecting bevel gear (57) is arranged on the outer peripheral side of the power sleeve (55), and the driving bevel gear (56) is meshed with the connecting bevel gear (57); A mounting hole (22) is formed on the outer peripheral side of the second connecting tube (2) along the circumferential direction, the mounting hole (22) is connected to the second connecting tube (2), the second pushing block (62) is close to the mounting hole (22), and the first pushing block (61) is away from the mounting hole (22); The support ring (54) is rotatably connected to a hole wall on one side of the mounting hole (22), and the outer peripheral side of the support ring (54) is in sliding contact with the inner peripheral side wall of the power sleeve (55); The connecting gear (52) is rotatably connected to the support ring (54) and is located in the mounting hole (22); a power tooth (552) is provided on the inner circumference of the power sleeve (55); and the connecting gear (52) is meshed with the power tooth (552); The driving ring (5) is rotatably connected to the second connecting pipe (2) and is coaxially arranged, and the driving ring (5) is threadedly connected to the outer peripheral side of the connecting ring (51); The connecting rack (53) is circumferentially arranged on the outer peripheral side of the driving ring (5), and the connecting gear (52) is meshed with the connecting rack (53); The support ring (54) is slidably provided with a plug-in column (541), and the inner wall of the power sleeve (55) is formed with a plug-in groove (551) corresponding to the plug-in column (541); The support ring (54) is provided with an elastic driving member, and when the plug-in column (541) and the plug-in slot (551) are aligned with each other, the elastic driving member drives the plug-in column (541) to be inserted into the plug-in slot (551), and at this time, the power sleeve (55) and the support ring (54) are linked; The second connecting tube (2) is slidably connected to a control ring (23) along the circumferential direction, and a control block (542) is provided on the outer circumference of the plug-in column (541). The control block (542) is tilted to form a control surface (543) corresponding to the control ring (23). When the control ring (23) slides on the control surface (543) in a direction close to the plug-in column (541), the plug-in column (541) is separated from the plug-in groove (551). The second connecting tube (2) includes a toggle assembly, and when the connecting block (6) moves to a side close to the mounting hole (22), the toggle assembly toggle the control ring (23) to slide on the control surface (543); When the connecting block (6) moves to a side away from the mounting hole (22), the toggle assembly toggles the control ring (23) away from the control surface (543).

4. The asphalt paving device for cement pavement according to claim 3, characterized in that: The toggle assembly comprises a toggle bar (7), a first toggle block (71) and a second toggle block (72); The toggle bar (7) is axially slidably connected to the second connecting tube (2), and the toggle bar (7) is connected to the control ring (23); The first shift block (71) and the second shift block (72) are symmetrically arranged on the same side of the shift bar (7) and respectively protrude into the connecting groove (21), and the connecting block (6) is located between the first shift block (71) and the second shift block (72); When the connecting block (6) pushes the first shifting block (71) away from the mounting hole (22), the control ring (23) moves away from the control surface (543); When the connecting block (6) pushes the second shifting block (72) close to the mounting hole (22), the control ring (23) slides on the control surface (543).

5. The asphalt paving device for cement pavement according to claim 3, characterized in that: The elastic driving member includes a driving spring (544), a limiting block (545) is provided on the outer peripheral side of the plug-in column (541), and a limiting groove (546) for the limiting block (545) to slide is formed in the support ring (54); The driving spring (544) is sleeved on the outer peripheral side of the plug-in column (541), one end of the driving spring (544) abuts against the side of the limiting block (545) away from the power sleeve (55), and the other end abuts against the groove wall of the limiting groove (546).

6. The asphalt paving device for cement pavement according to claim 5, characterized in that: The plug-in column (541) is a square column structure, and a side of the plug-in column (541) close to the power sleeve (55) is formed with a curved surface structure.

7. A method for paving asphalt on a cement pavement, using the asphalt paving device for a cement pavement according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1: Cleaning old cement concrete pavement; S2: Use rubber asphalt synchronous spreader to spread the asphalt layer; S3: The machine body (1) travels on the asphalt layer, so that the rolling wheel (11) rolls the asphalt layer.

Images