A paving device for a cement concrete pavement of a road construction

Abstract

This invention belongs to the field of concrete pavement paving technology, specifically referring to a paving device for cement concrete pavement in highway construction. It includes a paving machine, a material distribution box fixedly connected to one side of the paving machine, side material distribution rollers rotatably connected to the inner walls of both sides of the material distribution box, and swing blades movably connected in a circular array on the side material distribution rollers. Main material distribution rollers are fixedly connected coaxially to the side material distribution rollers on both sides. A turning guide rail is fixedly connected in a linear array to the inner wall of the material distribution box. This invention breaks up internal lumps in the concrete while simultaneously shoveling and scattering the bottom layer of concrete. It also drives the swing blades to rotate and push materials. When encountering unbroken lumps or large stones, impurities are discharged, preventing them from mixing into the paving layer and causing defects such as hollow areas and cracks in the pavement. The side material distribution rollers rotate synchronously with the rotating disc, achieving reciprocating compaction of the concrete pavement edges. After compaction and resetting, the upper concrete is extracted to fill the edge gaps.

Description

Technical Field

[0001] This invention belongs to the field of concrete pavement laying technology, specifically referring to a cement concrete pavement laying device for highway construction. Background Technology

[0002] In the field of highway construction, cement concrete pavement is widely used in the paving of highways at all levels due to its advantages such as high strength, high durability and long service life.

[0003] During the material distribution process of existing concrete pavement laying devices, concrete is prone to stratification due to its own gravity. The bottom layer of concrete has a higher density, while the top layer has a higher air content. If laid directly, this will lead to uneven compaction of the pavement structure, which will easily cause cracking, sanding and other defects in the later stages. The presence of unmixed lumps in the concrete will create local weak points and reduce the overall load-bearing capacity of the pavement. Large stones mixed in the concrete raw materials can easily cause defects such as hollowness and cracking of the pavement. During the laying process, insufficient material accumulation or insufficient compaction is likely to occur in the edge areas of the pavement, resulting in loose edge concrete and poor flatness. Summary of the Invention

[0004] To address the above issues and overcome the shortcomings of existing technologies, this invention provides a paving device for cement concrete pavement in highway construction. This application utilizes the combined action of a rotating main distribution roller and a tilting guide rail to break up internal lumps in the concrete while simultaneously shoveling and scattering the bottom layer of concrete. This solves the technical problems of uneven pavement density and localized weak points caused by lumps in existing technologies. The side distribution roller drives the oscillating blades to rotate and push the material. When encountering unbroken lumps or large stones, impurities are discharged, solving the technical problem of large stones in concrete raw materials causing defects such as hollow areas and cracks in the pavement. The side distribution roller rotates synchronously with the rotating disk, achieving reciprocating compaction of the concrete pavement edges. After compaction and resetting, the upper concrete is extracted to fill the edge gaps, solving the technical problems of loose edge concrete and poor flatness in existing technologies.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: The present invention proposes a paving device for cement concrete pavement for highway construction, including a paving machine. A material distribution box is fixedly connected to one side of the paving machine. Protective covers are fixedly connected to the two side walls of the material distribution box. A material distribution motor is fixedly connected to one side of the protective cover. Side material distribution rollers are rotatably connected to the inner side walls of the two side walls of the material distribution box. Swinging blades are movably connected to the side material distribution rollers in a circular array. Main material distribution rollers are fixedly connected to the side material distribution rollers on both sides. A flipping guide rail is fixedly connected to the inner side wall of the material distribution box in a linear array. The main material distribution roller passes through the flipping guide rail. The flipping guide rail is arranged in a rhomboid shape. A rotating disk is rotatably connected to the inner side wall of the protective cover. The other end of the rotating disk rotatably passes through the side wall of the material distribution box and is fixedly connected to the side material distribution rollers coaxially. Push plates slide out from the two side walls of the material distribution box. The push plates are located below the swinging blades.

[0006] Preferably, a drive ring is fixedly connected in a linear array on the main distributing roller, and a telescopic sleeve is fixedly connected symmetrically on the drive ring. A drive seat is fixedly connected to the telescopic end of the telescopic sleeve, and a guide wheel is rotatably connected to the drive seat. The outer circumferential wall of the guide wheel is in contact with the inner wall of the flipping guide rail. Scrapers are fixedly connected to both sides of the drive seat, and a telescopic spring is sleeved on the telescopic sleeve. The two ends of the telescopic spring are fixedly connected to the top wall of the drive seat and the outer circumferential wall of the drive ring, respectively.

[0007] Preferably, the side distribution roller has a hollow groove inside, and a swing rod is rotatably connected to the side distribution roller in a circular array. The top end of the swing rod is fixedly connected to the bottom wall of the swing blade, and the bottom end of the swing rod is oscillating within the hollow groove. A torsion spring is sleeved on the swing rod, and the two ends of the torsion spring are fixedly connected to the bottom end of the swing rod and the hollow groove, respectively. A swing seat is coaxially fixedly connected to the swing rod, and the bottom wall of the swing seat is rotatably connected to the outer circumferential wall of the side distribution roller. A first stop block and a second stop block are fixedly connected to the outer circumferential wall of the swing seat. A blocking column is fixedly connected to the side distribution roller in a circular array. Guide grooves are provided on the side walls of the distribution box, and the guide grooves are close to one end of the swing blade.

[0008] Preferably, a push block is fixedly connected in a ring array on one side of the rotating disk, and the outer edges of both sides of the sidewall of the push block are set as bevels. A push rod is fixedly connected to the sidewall of the push plate, and the other end of the push rod slides out of the sidewall of the distribution box. The other end of the push rod is set as a ball head, and the ball head end of the push rod is located on the rotation path of the push block. A push spring is sleeved on the push rod, and the two ends of the push spring are fixedly connected to the ball head end of the push rod and the sidewall of the distribution box, respectively.

[0009] The beneficial effects achieved by the present invention using the above structure are as follows:

[0010] 1. This application utilizes the combination of the rotation of the main distributing roller and the guidance of the flipping guide rail to break up the internal lumps of concrete while shoveling out and scattering the bottom layer of concrete. The synchronous rotation of the main distributing roller and the side distributing roller can also drive the oscillating blade to rotate. When no unbroken lumps or large stones are encountered, the oscillating blade follows the rotation of the side distributing roller to push the material. When unbroken lumps or large stones are encountered, impurities are discharged to avoid impurities from mixing into the paving layer and causing defects such as hollowing and cracking of the road surface. The synchronous rotation of the side distributing roller and the rotating disk realizes the reciprocating compaction of the edge of the concrete pavement. After compaction and reset, the upper concrete is also extracted to fill the edge gaps.

[0011] 2. The scraper driven by the main distributing roller moves along the flipping guide rail. During the rotation of the main distributing roller, the scraper can not only insert into the concrete to break up the internal lumps, but also scrape out and throw the bottom layer of concrete to avoid the concrete from easily separating due to gravity during the laying process and ensure the overall homogeneity of the concrete.

[0012] 3. The side distribution roller drives the swing blades to rotate, push the material and block the guide groove to avoid local material accumulation or gaps. When encountering unbroken lumps or large stones, the swing blades can overcome the torsion spring force to swing, expand the channel between the blades on both sides, and allow impurities to be discharged from the distribution box through the guide groove, so as to avoid impurities from mixing into the paving layer and causing defects such as hollowing and cracking of the road surface.

[0013] 4. The rotating disc drives the push block to rotate, and the push rod reciprocates to drive the push plate to extend out of the distribution box and press against the edge of the road. After the push plate is reset, the negative pressure gap formed between the push plate and the edge of the road can be extracted to fill the gap with concrete above, thus avoiding material gaps at the edge. Attached Figure Description

[0014] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the invention and do not constitute a limitation thereof.

[0015] Figure 1 This is a schematic diagram of the overall structure of a cement concrete pavement laying device for highway construction proposed in this invention.

[0016] Figure 2 This is a schematic diagram of the material distribution box connection structure of a cement concrete pavement laying device for highway construction proposed in this invention.

[0017] Figure 3 This is a cross-sectional view of the material distribution box of a cement concrete pavement laying device for highway construction proposed in this invention.

[0018] Figure 4 This is a schematic diagram of the tilting guide rail connection structure of a cement concrete pavement laying device for highway construction proposed in this invention.

[0019] Figure 5 This is a schematic diagram of the side distribution roller connection structure of a cement concrete pavement laying device for highway construction proposed in this invention.

[0020] Figure 6 This is a schematic cross-sectional view of the side distribution roller structure of a cement concrete pavement laying device for highway construction proposed in this invention.

[0021] Figure 7 This is a top view of the side distribution roller structure of a cement concrete pavement laying device for highway construction proposed in this invention.

[0022] Figure 8 This is a schematic diagram of the pusher plate connection structure of a cement concrete pavement laying device for highway construction proposed in this invention.

[0023] Figure 9 This is a schematic diagram of the rotating disk connection structure of a cement concrete pavement laying device for highway construction proposed in this invention.

[0024] In the attached diagram: 1. Paving machine, 2. Material distribution box, 3. Protective cover, 4. Material distribution motor, 5. Main material distribution roller, 6. Tilting guide rail, 7. Side material distribution roller, 8. Push plate, 31. Rotary disc, 32. Push block, 51. Drive ring, 52. Telescopic sleeve, 53. Drive seat, 54. Guide wheel, 55. Scraper, 56. Telescopic spring, 71. Swing rod, 72. Swing seat, 73. Torsion spring, 74. Swing blade, 75. Hollow groove, 76. Blocking column, 77. Guide groove, 721. First stop block, 722. Second stop block, 81. Push rod, 82. Push spring.

[0025] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0027] Example 1, as Figures 1-9As shown, this solution proposes a cement concrete pavement laying device for highway construction, including a paver 1. A material distribution box 2 is fixedly connected to one side of the paver 1. Protective covers 3 are fixedly connected to the side walls of the material distribution box 2. A material distribution motor 4 is fixedly connected to one side of the protective cover 3. Side material distribution rollers 7 are coaxially rotatably connected to the inner side walls of both sides of the material distribution box 2. Swinging blades 74 are movably connected in a circular array on the side material distribution rollers 7. Main material distribution rollers 5 are coaxially fixedly connected to the side material distribution rollers 7 on both sides. Turning guide rails 6 are linearly arrayed and fixedly connected to the inner side walls of the material distribution box 2. The main material distribution rollers 5 pass through the turning guide rails 6. The moving guide rail 6 is arranged in a rhombus shape. The inner side wall of the protective cover 3 is rotatably connected to a rotating disk 31. The other end of the rotating disk 31 rotates through the side wall of the distributing box 2 and is coaxially fixedly connected to the side distributing roller 7. The output end of the distributing motor 4 on one side of the protective cover 3 is coaxially fixedly connected to the rotating disk 31 on one side. The distributing motor 4 drives the side distributing roller 7 and the main distributing roller 5 to rotate through the rotating disk 31. The main distributing roller 5 is symmetrically wound with spiral blades of opposite rotation directions. Push plates 8 slide out from the side walls of both sides of the distributing box 2. The push plates 8 are located below the swing blades 74. The rotating disk 31 drives the push plates 8 to reciprocate out of the side walls of the distributing box 2.

[0028] like Figures 1-4 As shown, the main distributing roller 5 has a linear array of fixed drive rings 51. The center point of the flipping guide rail 6 is coaxial with the axis of the drive rings 51. A telescopic sleeve 52 is symmetrically fixedly connected to the drive rings 51. A drive seat 53 is fixedly connected to the telescopic end of the telescopic sleeve 52. A guide wheel 54 is rotatably connected to the drive seat 53. The outer circumferential wall of the guide wheel 54 contacts the inner wall of the flipping guide rail 6. Scrapers 55 are fixedly connected to both sides of the drive seat 53. A telescopic spring 56 is sleeved on the telescopic sleeve 52. The two ends of the telescopic spring 56 are fixedly connected to the top wall of the drive seat 53 and the outer circumferential wall of the drive ring 51, respectively. When the guide wheel 54 contacts the top or bottom of the flipping guide rail 6, the telescopic spring 56 is not compressed. The guide wheel 54 approaches the flipping guide rail 6. As the two ends of the moving guide rail 6 move, the telescopic spring 56 is gradually compressed. When the main distributing roller 5 rotates, it pushes the driving ring 51 to rotate. The driving ring 51 drives the guide wheel 54 to move along the flipping guide rail 6 through the telescopic sleeve 52. When the driving seat 53 drives the scraper 55 to approach the bottom of the flipping guide rail 6, the telescopic spring 56 gradually returns to its original position, pushing the guide wheel 54 to contact the inner wall of the flipping guide rail 6. When the driving seat 53 drives the scrapers 55 on both sides to insert into the concrete, it breaks up the lumps in the concrete. As the main distributing roller 5 rotates, the scrapers 55 on both sides rotate through the driving ring 51, the telescopic sleeve 52 and the driving seat 53, scraping out the bottom layer of concrete. When the guide wheel 54 gradually contacts the top of the flipping guide rail 6, the scraper 55 throws out the scraped concrete to avoid concrete segregation.

[0029] like Figures 1-3 and Figures 5-7 As shown, the side distribution roller 7 has a hollow groove 75 inside. A swing rod 71 is rotatably connected to the side distribution roller 7 in a circular array. The top end of the swing rod 71 is fixedly connected to the bottom wall of the swing blade 74. The bottom end of the swing rod 71 swings within the hollow groove 75. A torsion spring 73 is sleeved on the swing rod 71. The two ends of the torsion spring 73 are fixedly connected to the bottom end of the swing rod 71 and the hollow groove 75, respectively. A swing seat 72 is coaxially fixedly connected to the swing rod 71. The bottom wall of the swing seat 72 is rotatably connected to the outer circumferential wall of the side distribution roller 7. A first stop 721 and a second stop 722 are fixedly connected to the outer circumferential wall of the swing seat 72. A blocking column 76 is fixedly connected to the side distribution roller 7 in a circular array. Guide grooves 77 are provided on both side walls of the distribution box 2. The guide grooves 77 are near one end of the swing blade 74. The torsion spring 73 is initially not tightened. The torsion spring 73 drives the first stop 721 and the blocking column 722 through the swing rod 71 and the swing seat 72. When the stop post 76 contacts, the swing blade 74 rotates with the side distribution roller 7, pushing the material into the paving area. The rotating swing blade 74 blocks the guide groove 77. When uncrushed lumps or larger stones contact the swing blade 74, the swing blade 74 drives the swing rod 71 and swing seat 72 to swing, tightening the torsion spring 73. The swing seat 72 drives the first stop block 721 and the second stop block 722 to swing. The first stop block 721 moves away from the stop post 76, and the second stop block 722 contacts the stop post 76. The swing blade 74 stops swinging, and the channel between the swing blades 74 on both sides becomes larger. Uncrushed lumps or larger stones enter the guide groove 77 through the changed channel and are discharged from the distribution box 2 through the guide groove 77. Then the torsion spring 73 resets, and the swing blade 74 is reset through the swing rod 71 and swing seat 72. The second stop block 722 moves away from the stop post 76, and the first stop block 721 contacts the stop post 76.

[0030] like Figures 8-9As shown, a push block 32 is fixedly connected in a circular array on one side of the rotating disk 31. The outer edges of both sides of one side wall of the push block 32 are beveled. A push rod 81 is fixedly connected to the side wall of the push plate 8. The other end of the push rod 81 slides out of the side wall of the distribution box 2. The other end of the push rod 81 is a ball head, located on the rotation path of the push block 32. A push spring 82 is sleeved on the push rod 81, with both ends fixedly connected to the ball head of the push rod 81 and the side wall of the distribution box 2, respectively. When... When the inclined side of the push block 32 contacts the ball end of the push rod 81, the push block 32 drives the push rod 81 to slide on the side wall of the distribution box 2, compressing the push spring 82. The push plate 8 presses the edge of the concrete pavement tightly. When the push block 32 moves away from the push rod 81, the push spring 82 resets, driving the push rod 81 and the push plate 8 to reset. Since the push plate 8 is located below the swing blade 74, after the push plate 8 resets, there is a negative pressure gap between the side wall of the push plate 8 and the pressed edge of the concrete pavement. The negative pressure gap draws out the concrete above the push plate 8 and fills the gap.

[0031] After the paving machine 1 starts, it moves the material distribution box 2 to the road surface. The concrete pump truck delivers concrete into the material distribution box 2. The material distribution motor 4 starts and drives the side material distribution roller 7 and the main material distribution roller 5 to rotate through the rotating disk 31 on one side. The main material distribution roller 5 drives the spiral blade to rotate and push the concrete to both sides of the material distribution box 2. The paving machine 1 pushes the material distribution box 2 to move along the predetermined route. At the same time, the paving machine 1 works to pave the road surface.

[0032] When the main distributing roller 5 rotates, it drives the driving ring 51 to rotate. The driving ring 51 drives the guide wheel 54 to move along the flipping guide rail 6 through the telescopic sleeve 52. When the driving seat 53 drives the scraper 55 to approach the bottom of the flipping guide rail 6, the telescopic spring 56 gradually returns to its original position, pushing the guide wheel 54 to contact the inner wall of the flipping guide rail 6. When the driving seat 53 drives the scrapers 55 on both sides to insert into the concrete, it breaks up the lumps in the concrete. As the main distributing roller 5 rotates, the driving ring 51, telescopic sleeve 52 and driving seat 53 drive the scrapers 55 on both sides to rotate, scraping out the bottom layer of concrete. When the guide wheel 54 gradually contacts the top of the flipping guide rail 6, the scraper 55 throws out the scraped concrete to avoid concrete segregation.

[0033] The main distributing roller 5 and the side distributing roller 7 rotate synchronously. The side distributing roller 7 drives the swing blade 74 to rotate through the swing rod 71 and the swing seat 72. The swing blade 74 pushes the material at the edge to the laying area. The rotating swing blade 74 blocks the guide groove 77 to prevent the material from being discharged from the distributing box 2 through the guide groove 77.

[0034] When uncrushed lumps or larger stones come into contact with the swing blade 74, the swing blade 74 drives the swing rod 71 and the swing seat 72 to swing, tightening the torsion spring 73. The swing seat 72 drives the first stop 721 and the second stop 722 to swing. The first stop 721 moves away from the blocking post 76, and the second stop 722 contacts the blocking post 76. The swing blade 74 stops swinging, and the channel between the swing blades 74 on both sides widens. Uncrushed lumps or larger stones enter the guide groove 77 through the changed channel and are discharged from the distribution box 2 through the guide groove 77. Then the torsion spring 73 resets, and the swing blade 74 is reset by the swing rod 71 and the swing seat 72. The swing seat 72 drives the second stop 722 away from the blocking post 76, and the first stop 721 contacts the blocking post 76. The swing blade 74 continues to push the material at the edge into the paving area.

[0035] The rotating disk 31 rotates synchronously with the main distributing roller 5 and the side distributing roller 7. The rotating disk 31 drives the pushing block 32 to rotate. When the inclined side of the pushing block 32 contacts the ball end of the pushing rod 81, the pushing block 32 drives the pushing rod 81 to slide on the side wall of the distributing box 2, compressing the pushing spring 82. The pushing plate 8 presses the edge of the concrete pavement tightly. When the pushing block 32 moves away from the pushing rod 81, the pushing spring 82 resets, driving the pushing rod 81 and the pushing plate 8 to reset. Since the pushing plate 8 is located below the swing blade 74, after the pushing plate 8 resets, there is a negative pressure gap between the side wall of the pushing plate 8 and the pressed edge of the concrete pavement. The negative pressure gap draws out the concrete above the pushing plate 8 and fills the gap. As the paving machine 1 pushes the distributing box 2 to move, the pushing plate 8 reciprocates to compact the edge of the concrete pavement.

[0036] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A paving device for a cement concrete road surface for road construction, comprising a paver (1), characterized in that: The paving machine (1) is fixedly connected to a material distribution box (2) on one side. Protective covers (3) are fixedly connected to the side walls of the material distribution box (2). A material distribution motor (4) is fixedly connected to one side of the protective cover (3). Side material distribution rollers (7) are rotatably connected to the inner side walls of the two sides of the material distribution box (2). Swing blades (74) are movably connected to the side material distribution rollers (7) in a ring array. Main material distribution rollers (5) are fixedly connected to the side material distribution rollers (7) on both sides. A flipping guide rail (6) is fixedly connected to the inner side wall of the material distribution box (2) in a linear array. The main material distribution roller (5) passes through the flipping guide rail (6). The flipping guide rail (6) is arranged in a rhombus shape. A rotating disk (31) is rotatably connected to the inner side wall of the protective cover (3). The other end of the rotating disk (31) rotatably passes through the side wall of the material distribution box (2) and is fixedly connected to the side material distribution roller (7) coaxially. The output end of the material distribution motor (4) on the cover (3) is coaxially fixedly connected to the rotating disk (31) on one side. Push plates (8) are slidably extended from the side walls of the material distribution box (2). The rotating disk (31) drives the push plates (8) to reciprocate to extend from the side wall of the material distribution box (2). Push blocks (32) are fixedly connected in a ring array on one side of the rotating disk (31). Push rods (81) are fixedly connected to the side wall of the push plate (8). The other end of the push rod (81) slides out from the side wall of the material distribution box (2). The push rod (81) is located on the rotation path of the push block (32). When the push plate (8) is away from the edge of the concrete pavement, a negative pressure gap is formed between the side wall of the push plate (8) and the edge of the concrete pavement. The concrete above the push plate (8) is extracted and the gap is filled. When the push plate (8) is close to the edge of the concrete pavement, the edge of the concrete pavement is compacted. When lumps or larger stones come into contact with the oscillating blades (74), the channel between the oscillating blades (74) on both sides becomes larger, and the lumps or larger stones are discharged from the distribution box (2) through the channel between the oscillating blades (74).

2. The device for laying a cement concrete pavement for road construction according to claim 1, characterized in that: The main distributing roller (5) is fixedly connected with a drive ring (51) in a linear array. The drive ring (51) is symmetrically fixedly connected with a telescopic sleeve (52). The telescopic end of the telescopic sleeve (52) is fixedly connected with a drive seat (53). The drive seat (53) moves along the path of the flipping guide rail (6). The drive seat (53) is fixedly connected with scrapers (55) on both sides.

3. The cement concrete pavement laying device for highway construction according to claim 2, characterized in that: The side distribution roller (7) has a hollow groove (75) inside. A swing rod (71) is rotatably connected to the side distribution roller (7) in a ring array. The top end of the swing rod (71) is fixedly connected to the bottom wall of the swing blade (74). The bottom end of the swing rod (71) swings within the hollow groove (75). A swing seat (72) is coaxially fixedly connected to the swing rod (71). A first stop (721) and a second stop (72) are fixedly connected to the outer circumferential wall of the swing seat (72). 2) The side distribution roller (7) is fixedly connected with blocking columns (76) in a ring array. The side walls of the distribution box (2) are provided with guide grooves (77). When the swing seat (72) drives the first stop (721) to contact the blocking column (76), the swing blade (74) rotates with the side distribution roller (7). When the first stop (721) moves away from the blocking column (76) and the second stop (722) contacts the blocking column (76), the channel between the swing blades (74) on both sides becomes larger.

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