A vibratory compaction system for asphalt mix

Abstract

A vibration compaction system for asphalt mixtures includes a worktable with a through groove along its length. Multiple equidistantly arranged movable frames slide within the groove. A power assembly on the worktable moves the movable frames, and a mold is placed within each frame. A first rotating shaft is rotatably mounted at the bottom of the worktable, with a vibrator fixedly mounted on it. A support frame is mounted at the top of the worktable, with a second rotating shaft rotatably mounted on it. A compaction assembly is positioned between the second rotating shaft and the support frame. A transmission assembly on the worktable simultaneously drives the first and second rotating shafts. When the first rotating shaft rotates, it drives the vibrator to vibrate the corresponding mold. When the second rotating shaft rotates, it drives the compaction assembly to compact the asphalt mixture. This system achieves thorough vibration compaction of the asphalt mixture within the mold, thereby reducing the number of subsequent compaction cycles and improving compaction efficiency.

Description

Technical Field

[0001] This invention relates to the field of asphalt mixture technology, and more specifically to a vibration compaction system for asphalt mixtures. Background Technology

[0002] Asphalt mixture is a composite material mainly composed of asphalt, coarse aggregate, fine aggregate, and mineral powder. Some also contain polymers and wood cellulose. Asphalt mixture is used in the process of paving asphalt pavement. In order to improve the ability of asphalt mixture for paving to resist the damage to the pavement caused by traffic and natural factors, it is necessary to simulate the actual paving process, mold the asphalt mixture, and then test it. The quality of the molded asphalt mixture has a significant impact on the test results. Therefore, a vibration compaction molding system for asphalt mixture is needed to improve the quality of asphalt mixture molding.

[0003] For example, patent document with publication number "CN110849685B" and titled "An Integrated Roller Compactor and Compactor Method for Asphalt Mixture" includes a compaction device, a sliding device, and a compaction power device. The compaction device includes a guide bracket and a compaction rod that can slide up and down along the guide bracket. The lower end of the compaction rod is provided with a compaction head, and a vertically arranged rack is provided on the compaction rod. The compaction power device includes a half gear for meshing with the rack, and the half gear is connected to the output shaft of a drive motor to drive the motor. The machine is fixed on the guide support; the sliding device includes a mold placement plate, a sliding seat, and a sliding track set on the sliding seat. Sliding balls are installed in the sliding track. The lower end of the mold placement plate has a groove that mates with the sliding balls. The mold placement plate is used to place asphalt mixture molds. The sliding seat is located below the guide support, and the mold placement plate can be moved to directly below the compaction head. The compaction device includes a roller mill main support fixed to one side of the guide support. A compaction wheel is installed on the roller mill main support, and the sliding seat can move to the lower end of the compaction wheel. Under the combined action of the compaction device, the sliding device, and the compaction power device, preliminary compaction of the asphalt mixture before roller milling can be achieved.

[0004] In the asphalt mixture roller rolling process described in the above literature, the lack of a pre-vibration compaction stage results in poor initial density of the asphalt mixture. The mixture with low density requires a significant increase in the number of compaction cycles to meet the design requirements. This not only significantly prolongs the compaction cycle and reduces the molding efficiency, but also makes it difficult to achieve sufficient compaction effect in subsequent compaction processes. This situation directly affects the molding quality of the asphalt mixture, thereby affecting the accuracy and reliability of relevant performance test data and failing to provide accurate reference for engineering practice. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a vibration compaction molding system for asphalt mixtures. This system solves the technical problem mentioned in the background art: asphalt mixtures have poor initial compaction, and mixtures with low compaction require a significant increase in the number of compaction cycles to meet design requirements, which not only significantly prolongs the compaction cycle but also reduces molding efficiency.

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

[0007] A vibration compaction molding system for asphalt mixture includes a worktable with a through groove along its length. Multiple equidistantly arranged movable frames are slidably disposed within the through groove. A power assembly is mounted on the worktable to move the movable frames. Test molds are placed within the movable frames. A first rotating shaft is rotatably mounted at the bottom of the worktable, and a vibrating element is fixedly mounted on the first rotating shaft to vibrate the test mold that slides to it. A support frame is mounted on the top of the worktable, and a second rotating shaft is rotatably mounted on the support frame. A compaction assembly for compacting the asphalt mixture is disposed between the second rotating shaft and the support frame. A transmission assembly is mounted on the worktable to simultaneously drive the first and second rotating shafts to rotate. When the first rotating shaft rotates, it drives the vibrating element to vibrate the test mold that slides to it; when the second rotating shaft rotates, it drives the compaction assembly to compact the asphalt mixture.

[0008] Working Principle: During the preparation of multiple asphalt mixture specimens, asphalt mixture is added to each mold. The power assembly is activated, moving the corresponding moving frame, which in turn moves the corresponding mold directly above the cam. Simultaneously, the transmission assembly is activated, rotating both the first and second shafts. The first shaft drives the vibrator, causing continuous and stable vibration of the corresponding mold, ensuring thorough compaction of the asphalt mixture within the mold and achieving the desired density, forming a uniform asphalt mixture to be compacted. The power assembly then moves the compacted asphalt mixture below the compaction assembly. As the second shaft rotates, it drives the compaction assembly to compact the asphalt mixture in the corresponding mold. Simultaneously, the power assembly moves the next mold directly above the vibrator, facilitating simultaneous compaction of the asphalt mixture in the next mold while the current mold is being compacted.

[0009] The beneficial effects of this invention are as follows: Since a vibrating element is fixedly installed on the first rotating shaft to drive the corresponding mold to vibrate, and a compaction component for compacting the asphalt mixture is installed between the second rotating shaft and the support frame, and a transmission component is installed on the worktable to simultaneously drive the first and second rotating shafts to rotate, during the preparation of asphalt mixture specimens, asphalt mixture is added to each mold, the power component is activated to drive the corresponding moving frame to move, the moving frame drives the corresponding mold to move directly above the cam, the transmission component is activated to simultaneously drive the first and second rotating shafts to rotate, and the first rotating shaft drives the vibrating element to produce a continuous and stable vibration effect on the corresponding mold, achieving sufficient vibration compaction of the asphalt mixture in the mold, ensuring that the asphalt mixture reaches the ideal density, thereby reducing the number of subsequent compaction operations on the asphalt mixture, improving the compaction and molding efficiency of the asphalt mixture specimens and fully realizing the compaction effect, thus improving the accuracy and reliability of relevant performance test data.

[0010] Furthermore, the power assembly includes a first motor and a transmission screw. A sliding groove is formed on one side of the through groove along its length. The transmission screw is rotatably disposed in the sliding groove. The transmission screw is threadedly connected to multiple sliders, all of which are slidably connected to the sliding groove. The multiple sliders are respectively fixedly connected to their corresponding moving frames. The first motor is fixedly disposed on the worktable, and the output end of the first motor is fixedly connected to the transmission screw.

[0011] Furthermore, the transmission assembly includes a drive component and a third rotating shaft. The third rotating shaft is rotatably mounted on the bottom of the worktable. A third transmission wheel and a fourth transmission wheel are fixedly mounted on the third rotating shaft. A first transmission wheel is fixedly mounted on the first rotating shaft. A first transmission belt is mounted on the first and third transmission wheels. A second transmission wheel is fixedly mounted on the second rotating shaft. A second transmission belt is mounted on the second and fourth transmission wheels. A fixed frame is fixedly mounted on the top of the worktable. The drive component is fixedly mounted on the fixed frame and is used to drive the second rotating shaft to rotate.

[0012] Furthermore, the driving component includes a second motor, a support plate is fixedly mounted on the fixed frame, the second motor is fixedly mounted on the support plate, a fifth transmission wheel is fixedly mounted on the output end of the second motor, a sixth transmission wheel is fixedly mounted on the second rotating shaft, and a third transmission belt is mounted on the sixth transmission wheel and the fifth transmission wheel.

[0013] Furthermore, the fixing frame includes two fixing plates fixedly mounted on the workbench and arranged symmetrically. A crossbeam is fixedly mounted between the two fixing plates. A guide groove is opened at the bottom of the crossbeam along its length. A reciprocating screw is rotatably mounted in the guide groove. The reciprocating screw is fixedly connected to the output end of the second motor. A guide block is threadedly connected to the reciprocating screw. The guide block is slidably connected to the guide groove. A roller assembly for compacting asphalt mixture is mounted on the guide block.

[0014] Furthermore, the roller assembly includes an electric push rod and a roller. The electric push rod is fixedly mounted on the guide block, and a U-shaped frame is fixedly mounted on the output end of the electric push rod. The roller is rotatably mounted inside the U-shaped frame.

[0015] Furthermore, the vibrating element includes two cams, which are fixedly mounted on a first rotating shaft. The first rotating shaft drives the two cams to rotate, and during the rotation of the two cams, the mold moves upward.

[0016] Furthermore, the compaction assembly includes a compaction plate and an elastic telescopic rod. The elastic telescopic rod is slidably mounted on the support frame, and the compaction plate is fixedly mounted on the bottom of the elastic telescopic rod. A reciprocating assembly is provided between the elastic telescopic rod and the second rotating shaft. When the second rotating shaft rotates, the reciprocating assembly drives the elastic telescopic rod to move vertically back and forth.

[0017] Furthermore, the reciprocating assembly includes a first hinge rod, which is fixedly mounted on a second rotating shaft. A second hinge rod is hinged to one end of the first hinge rod away from the second rotating shaft, and the other end of the second hinge rod is hinged to an elastic telescopic rod.

[0018] Furthermore, the elastic telescopic rod includes a sleeve, which is slidably connected to the support frame. A sliding rod is slidably disposed inside the sleeve, and the bottom end of the sliding rod is fixedly connected to the compaction plate. A collar is fixedly sleeved on the sleeve, and a spring is fixedly disposed between the collar and the compaction plate. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention;

[0020] Figure 2 This is a perspective view of the present invention with the support column removed;

[0021] Figure 3 For the present invention Figure 1 A stereoscopic view from another perspective;

[0022] Figure 4 For the present invention Figure 3 Enlarged view of point A;

[0023] Figure 5 This is a cross-sectional view of the beam of the present invention.

[0024] Explanation of reference numerals in the attached drawings: 1. Workbench; 2. Support column; 3. Through groove; 4. Slide groove; 5. Moving frame; 6. Trial mold; 7. First motor; 71. Transmission screw; 72. Slider; 8. Support frame; 9. Mounting plate; 10. Second rotating shaft; 11. Compactor plate; 12. Fixing plate; 13. Crossbeam; 14. First connecting plate; 15. First rotating shaft; 16. Cam; 17. First transmission wheel; 18. First transmission belt; 19. Second connecting plate; 20. Third rotating shaft; 21. 21. Third transmission wheel; 22. Fourth transmission wheel; 23. Second transmission belt; 24. Support plate; 25. Second motor; 26. Sixth transmission wheel; 27. Second transmission wheel; 28. Fifth transmission wheel; 29. ​​Third transmission belt; 30. Electric push rod; 31. U-shaped frame; 32. Rolling wheel; 33. First hinge rod; 34. Second hinge rod; 35. Sleeve; 36. Collar; 37. Slide rod; 38. Spring; 39. Guide groove; 40. Guide block; 41. Reciprocating lead screw. Detailed Implementation

[0025] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] like Figure 1 As shown, a vibration compaction molding system for asphalt mixture includes a worktable 1, which is a cuboid structure. Support columns 2 are uniformly fixedly installed along the length of the bottom of the worktable 1 to support it. A through groove 3 is formed along the length of the worktable 1, penetrating it. Multiple equidistant movable frames 5 are slidably installed within the through groove 3, and a matching mold 6 is placed within each movable frame 5. The top and bottom of each movable frame 5 are open, and a retaining edge is integrally formed along the circumference of the bottom inner side of each movable frame 5 to facilitate the placement of the mold 6 within the corresponding movable frame 5. Heating wires (not shown in the figure) are uniformly installed along the circumference inside the movable frame 5. These heating wires preheat the mold 6, which is made of a material with good thermal conductivity, thereby bringing the asphalt mixture to be compacted to the required temperature during the molding process.

[0027] like Figure 1 , Figure 3 and Figure 5As shown, a power assembly for moving the movable frame 5 is installed on the workbench 1. The power assembly includes a first motor 7 and a transmission screw 71. Slide grooves 4 are formed along the length of the through groove 3 on both sides. Multiple sliders 72, arranged at equal intervals, are slidably installed in each slide groove 4, and each slider 72 is fixedly connected to its corresponding movable frame 5. The transmission screw 71 is rotatably installed in its corresponding slide groove 4. Both ends of the transmission screw 71 are smooth rod sections, and both ends rotatably pass through the corresponding slide groove 4. The transmission screw 71 is threadedly connected to the corresponding multiple sliders 72. The first motor 7 is fixedly installed on one side of the workbench 1. The output end of the first motor 7 rotatably passes through the workbench 1 and is coaxially fixedly connected to the transmission screw 71. The first motor 7 drives the transmission screw 71 to rotate, which in turn drives the corresponding slider 72 to move along the slide groove 4. The slider 72 then drives the corresponding movable frame 5 to move, and the movable frame 5 moves the test mold 6 within it to different molding process positions, facilitating the molding of the asphalt mixture within the test mold 6.

[0028] like Figure 2 As shown, three first connecting plates 14 are fixedly installed along the width of the bottom of the workbench 1. The three first connecting plates 14 are equidistantly distributed, and a first rotating shaft 15 is rotatably installed between the three first connecting plates 14. A vibrating component for driving the corresponding mold 6 to vibrate is fixedly installed on the first rotating shaft 15. The vibrating component includes two cams 16, which are fixedly sleeved on the outer periphery of the first rotating shaft 15 and located directly below the mold 6. During operation, as the first rotating shaft 15 rotates, the cams 16 form a sliding fit with the bottom of the mold 6. Through the change of the profile curve of the cams 16, the mold 6 is continuously pushed upward. When the cams 16 rotate to a specific angle and disengage from the mold 6, the mold 6 falls rapidly under its own weight and impacts the edge of the moving frame 5 with force. This regular up-and-down movement produces a continuous and stable vibration effect on the corresponding mold 6, thereby achieving sufficient vibration and compaction of the asphalt mixture inside the mold 6, ensuring that the asphalt mixture reaches the ideal compaction degree, improving the quality of the asphalt mixture molding, and providing reliable sample conditions for subsequent performance testing.

[0029] like Figure 1 , Figure 3 and Figure 4As shown, a support frame 8 is fixedly installed on the top of the workbench 1. Two spaced-apart mounting plates 9 are fixedly installed on the top of the support frame 8. A second rotating shaft 10 is rotatably installed between the two mounting plates 9. A compaction assembly for compacting the asphalt mixture is installed between the second rotating shaft 10 and the support frame 8. The compaction assembly includes a compaction plate 11 and an elastic telescopic rod. The elastic telescopic rod is slidably installed in the middle of the support frame 8. The compaction plate 11 is fixedly installed at the bottom of the elastic telescopic rod, and the compaction plate 11 is adapted to the size of the mold 6 to prevent the edge of the mold 6 from obstructing the downward movement of the compaction plate 11. A first reciprocating assembly is installed between the elastic telescopic rod and the second rotating shaft 10. When the second rotating shaft 10 rotates, the first reciprocating assembly drives the elastic telescopic rod to move vertically back and forth. The first reciprocating assembly includes a first hinge rod 33, which is fixedly sleeved on one end of the second rotating shaft 10. A second hinge rod 34 is hinged to the end of the first hinge rod 33 away from the second rotating shaft 10 via a hinge shaft. The other end of the second hinge rod 34 is hinged to an elastic telescopic rod. As the second rotating shaft 10 rotates, it drives the first hinge rod 33 to rotate. This rotation, via the second hinge rod 34, causes the elastic telescopic rod to move up and down. The elastic telescopic rod then causes the compaction plate 11 to move up and down, thereby compacting the asphalt mixture within the corresponding mold 6.

[0030] like Figure 4 As shown, the elastic telescopic rod includes a sleeve 35, which vertically passes through the middle of the support frame 8 and is slidably connected to the support frame 8. The top of the sleeve 35 is hinged to the second hinge rod 34 via a hinge shaft. A sliding rod 37 is slidably installed inside the sleeve 35, and the bottom end of the sliding rod 37 is fixedly connected to the compaction plate 11. A collar 36 is fixedly sleeved on the outer periphery of the sleeve 35, and a spring 38 is fixedly installed between the collar 36 and the compaction plate 11. The spring 38 is sleeved on the outer periphery of the sliding rod 37. When the reciprocating assembly drives the elastic telescopic rod to move up and down, since the distance by which it drives the compaction plate 11 to move downward is fixed, as the compaction plate 11 continuously presses down on the asphalt mixture, the thickness of the asphalt mixture gradually decreases. At this time, the elastic force of the spring 38 plays a role, so that the compaction plate 11 can always be tightly attached to the surface of the asphalt mixture, ensuring the uniformity and stability of the compaction effect. In addition, if the thickness of the asphalt mixture is large, which hinders the downward stroke of the compaction plate 11, the spring 38 will undergo elastic deformation under pressure to absorb the excess pressure. This avoids the situation where the first hinge rod 33 cannot rotate normally with the second rotating shaft 10 due to excessive resistance, ensuring the stable operation of the entire compaction assembly, effectively solving the adaptability problem in the compaction process, and improving the efficiency and quality of compaction operations.

[0031] like Figure 2 and Figure 5As shown, a transmission assembly for simultaneously driving the first rotating shaft 15 and the second rotating shaft 10 to rotate is installed on the workbench 1. The transmission assembly includes a drive component and a third rotating shaft 20. Two second connecting plates 19 are fixedly installed along the width of the bottom of the workbench 1, and the third rotating shaft 20 is rotatably mounted on the two second connecting plates 19. A third transmission wheel 21 and a fourth transmission wheel 22 are fixedly sleeved on one end of the third rotating shaft 20. A first transmission wheel 17 is fixedly sleeved on one end of the first rotating shaft 15, and a first transmission belt 18 is sleeved between the first transmission wheel 17 and the third transmission wheel 21. A second transmission wheel 27 is fixedly sleeved on one end of the second rotating shaft 10, and a second transmission belt 23 is sleeved between the second transmission wheel 27 and the fourth transmission wheel 22.

[0032] like Figure 1 , Figure 2 and Figure 5 As shown, a fixed frame is fixedly installed on the top of the workbench 1, and a drive component is fixedly installed on one side of the fixed frame. The drive component is used to drive the second rotating shaft 10 to rotate. The fixed frame includes two fixed plates 12 fixedly installed on the workbench 1 and arranged symmetrically, with a crossbeam 13 fixedly installed between the two fixed plates 12. The drive component includes a second motor 25, with a support plate 24 fixedly installed on one side of one of the fixed plates 12. The second motor 25 is fixedly installed on the support plate 24, and a fifth transmission wheel 28 is fixedly sleeved on the output end of the second motor 25. A sixth transmission wheel 26 is fixedly sleeved on the outer periphery of the second rotating shaft 10, and a third transmission belt 29 is sleeved between the sixth transmission wheel 26 and the fifth transmission wheel 28. When the second motor 25 is started, the second motor 25 drives the fifth transmission wheel 28 to rotate. The fifth transmission wheel 28 drives the sixth transmission wheel 26 to rotate through the third transmission belt 29. The sixth transmission wheel 26 drives the second rotating shaft 10 to rotate. The second rotating shaft 10 drives the compaction plate 11 to compact the asphalt mixture through the reciprocating assembly. The second rotating shaft 10 simultaneously drives the second transmission wheel 27 to rotate. The second transmission wheel 27 drives the fourth transmission wheel 22 to rotate via the second transmission belt 23. The fourth transmission wheel 22 drives the third rotating shaft 20 to rotate. The third rotating shaft 20 drives the third transmission wheel 21 to rotate. The third transmission wheel 21 drives the first transmission wheel 17 to rotate via the first transmission belt 18. The first transmission wheel 17 drives the first rotating shaft 15 to rotate. The first rotating shaft 15 drives the cam 16 to rotate. The cam 16 drives the corresponding test mold 6 to vibrate.

[0033] The first transmission wheel 17, the second transmission wheel 27, the third transmission wheel 21, the fourth transmission wheel 22, the fifth transmission wheel 28 and the sixth transmission wheel 26 mentioned above are all belt pulleys, and the first transmission belt 18, the second transmission belt 23 and the third transmission belt 29 are all V-belts.

[0034] like Figure 3 and Figure 5As shown, a guide groove 39 is provided at the bottom of the crossbeam 13 along its length. A reciprocating screw 41 is rotatably installed in the guide groove 39. Both ends of the reciprocating screw 41 are smooth sections, and both ends of the reciprocating screw 41 rotatably pass through the guide groove 39. One end of the reciprocating screw 41 passes through the crossbeam 13 and is fixedly connected to the output end of the second motor 25. A guide block 40 is threadedly connected to the outer circumference of the reciprocating screw 41. The guide block 40 is slidably connected to the guide groove 39. A roller assembly for compacting asphalt mixture is installed on the guide block 40. The roller assembly includes an electric push rod 30 and a compaction wheel 32. The electric push rod 30 is vertically fixedly installed at the bottom of the guide block 40. A U-shaped frame 31 is fixedly installed at the output end of the electric push rod 30. The size of the U-shaped frame 31 is adapted to the inner diameter of the mold 6. The compaction wheel 32 is rotatably installed in the U-shaped frame 31 through bearings. By simulating the pressure parameters of the asphalt mixture roller during actual construction, the electric push rod 30 is activated to move the compaction wheel 32 downwards, pressing it onto the surface of the compacted asphalt mixture specimen. Simultaneously, the second motor 25 drives the reciprocating screw 41 to rotate, which in turn drives the guide block 40 to move back and forth. The guide block 40, through the electric push rod 30, drives the compaction wheel 32 to repeatedly compact and shape the asphalt mixture. By simulating the compaction process in real road paving, not only can the stress state and shaping process of the asphalt mixture in actual construction be effectively reproduced, but the authenticity and reliability of the specimen test data are also significantly improved.

[0035] In the performance testing process of asphalt mixtures, it is often necessary to prepare multiple test samples simultaneously to ensure the reliability and accuracy of the test results. By setting up multiple moving frames 5, which are respectively coordinated with vibrating components, compaction components, and roller roller components, different molding processes can be performed on asphalt mixtures in multiple molds 6 at the same time. This achieves a high degree of automation, significantly shortens the preparation cycle of multiple asphalt mixture specimens, and significantly improves the efficiency of batch production of asphalt mixture specimens.

[0036] Working principle:

[0037] During use, asphalt mixture is added to each mold 6 according to the required thickness of the asphalt mixture specimen for the test. The first motor 7 is started, which drives the transmission screw 71 to rotate. The transmission screw 71 drives the corresponding slider 72 to move along the slide groove 4. The slider 72 drives the corresponding moving frame 5 to move. The moving frame 5 moves the corresponding mold 6 to directly above the cam 16. The heating wire inside the moving frame 5 is activated, and the heating wire heats the asphalt mixture to the required test temperature through the mold 6.

[0038] When the second motor 25 is turned on, it drives the fifth transmission wheel 28 to rotate. The fifth transmission wheel 28 drives the sixth transmission wheel 26 to rotate via the third transmission belt 29. The sixth transmission wheel 26 drives the second rotating shaft 10 to rotate. The second rotating shaft 10 drives the second transmission wheel 27 to rotate. The second transmission wheel 27 drives the fourth transmission wheel 22 to rotate via the second transmission belt 23. The fourth transmission wheel 22 drives the third rotating shaft 20 to rotate. The third rotating shaft 20 drives the third transmission wheel 21 to rotate. The third transmission wheel 21 drives the first transmission wheel 17 to rotate via the first transmission belt 18. The first transmission wheel 17 drives the first rotating shaft 15 to rotate. The first rotating shaft 15 drives the cam... The wheel 16 rotates, and the cam 16 slides with the bottom of the mold 6. The cam 16 pushes the mold 6 upward. When the cam 16 rotates to a specific angle and disengages from the mold 6, the mold 6 falls rapidly under its own weight and impacts the bottom edge of the moving frame 5. The repeated up-and-down movement of the mold 6 produces a continuous and stable vibration effect, which fully vibrates and compacts the asphalt mixture inside the mold 6, ensuring that the asphalt mixture reaches the ideal density and forms a uniform asphalt mixture to be compacted. This reduces the number of subsequent compaction times of the asphalt mixture and improves the molding efficiency of the asphalt mixture specimen.

[0039] The power assembly moves the vibrated and compacted asphalt mixture to be compacted directly below the compaction plate 11. Simultaneously, the second rotating shaft 10 rotates, driving the first hinge rod 33 to rotate. The rotation of the first hinge rod 33, through the second hinge rod 34, causes the elastic telescopic rod to move up and down. The elastic telescopic rod then moves the compaction plate 11 up and down, thus compacting the asphalt mixture within the corresponding mold 6. At the same time, the power assembly moves the next mold 6 directly above the cam 16, facilitating simultaneous vibration compaction of the asphalt mixture in the next mold 6 while the first mold is being compacted.

[0040] After the asphalt mixture specimen in the corresponding mold 6 is compacted, the power unit is activated to move the compacted asphalt mixture specimen directly under the compaction roller 32. Simultaneously, the next asphalt mixture specimen, after vibration compaction, is moved directly under the compaction plate 11. The electric push rod 30 is activated to move the compaction roller 32 downwards, pressing it onto the surface of the compacted asphalt mixture specimen. At the same time, the second motor 25 drives the reciprocating screw 41 to rotate, which in turn drives the guide block 40 to move back and forth. The guide block 40, through the electric push rod 30, drives the compaction roller 32 to repeatedly compact and shape the asphalt mixture, thus obtaining a more realistic asphalt mixture specimen that simulates actual paved asphalt mixture, significantly improving the authenticity and reliability of the specimen test data.

[0041] In the process of preparing multiple asphalt mixture specimens, this invention simultaneously drives the first rotating shaft 15 and the second rotating shaft 10 to rotate via a transmission assembly. The rotation of the first rotating shaft 15 vibrates and compacts the asphalt mixture within the corresponding mold 6 via a cam 16. The second rotating shaft 10 drives an elastic telescopic rod to move up and down via a reciprocating assembly. The elastic telescopic rod drives a compaction plate 11 to compact the asphalt mixture specimen within the corresponding mold 6. Simultaneously, the drive component of the transmission assembly uses a roller mill assembly to roll and shape the asphalt mixture specimen within the corresponding mold 6. This allows for the simultaneous application of different molding processes to asphalt mixtures in multiple molds 6, resulting in a high degree of automation, significantly shortening the preparation cycle for multiple asphalt mixture specimens, and substantially improving the efficiency of mass production of asphalt mixture specimens.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A vibration compaction system for asphalt mixtures, comprising a workbench (1), characterized in that, The workbench (1) has a through groove (3) along its length. Multiple movable frames (5) are slidably arranged in the through groove (3). The workbench (1) is equipped with a power component that drives the movable frames (5) to move. A test mold (6) is placed in the movable frame (5). A first rotating shaft (15) is rotatably arranged at the bottom of the workbench (1). A vibrating component is fixedly arranged on the first rotating shaft (15) to drive the test mold (6) to vibrate. A support frame (8) is arranged at the top of the workbench (1). A second rotating shaft (10) is rotatably arranged on the support frame (8). A compaction component for compacting the asphalt mixture is arranged between the second rotating shaft (10) and the support frame (8). The workbench (1) is equipped with a transmission assembly for simultaneously driving the first rotating shaft (15) and the second rotating shaft (10) to rotate. When the first rotating shaft (15) rotates, it drives the vibrating component to vibrate the test mold (6) that has slid to it. When the second rotating shaft (10) rotates, it drives the compaction component to compact the asphalt mixture. The transmission assembly includes a driving component and a third rotating shaft (20). The third rotating shaft (20) is rotatably set at the bottom of the workbench (1). A third transmission wheel (21) and a fourth transmission wheel (22) are fixedly sleeved on the third rotating shaft (20). A first transmission wheel (17) is fixedly sleeved on the first rotating shaft (15). The first transmission wheel (17) and the third transmission wheel (21) are... A first transmission belt (18) is fitted on the second shaft (10), a second transmission wheel (27) is fixedly fitted on the second shaft (10), a second transmission belt (23) is fitted on the second transmission wheel (27) and the fourth transmission wheel (22), a fixed frame is fixedly installed on the top of the workbench (1), a driving component is fixedly installed on the fixed frame, and the driving component is used to drive the second shaft (10) to rotate; the driving component includes a second motor (25), a support plate (24) is fixedly installed on the fixed frame, the second motor (25) is fixedly installed on the support plate (24), a fifth transmission wheel (28) is fixedly installed at the output end of the second motor (25), a sixth transmission wheel (26) is fixedly fitted on the second shaft (10), and the sixth transmission wheel (28) is fixedly fitted on the second shaft (10). 26) and the fifth transmission wheel (28) are fitted with a third transmission belt (29); the fixed frame includes two fixed plates (12) fixedly installed on the workbench (1) and arranged symmetrically, a crossbeam (13) is fixedly installed between the two fixed plates (12), a guide groove (39) is opened at the bottom of the crossbeam (13) along its length direction, a reciprocating screw (41) is rotatably installed in the guide groove (39), the reciprocating screw (41) is fixedly connected to the output end of the second motor (25), a guide block (40) is threadedly connected to the reciprocating screw (41), the guide block (40) is slidably connected to the guide groove (39), and a roller assembly for rolling asphalt mixture is installed on the guide block (40);The roller assembly includes an electric push rod (30) and a rolling wheel (32). The electric push rod (30) is fixedly mounted on a guide block (40), and a U-shaped frame (31) is fixedly mounted at the output end of the electric push rod (30). The rolling wheel (32) is rotatably mounted inside the U-shaped frame (31). The vibrating component includes two cams (16), which are fixedly mounted on a first rotating shaft (15). The first rotating shaft (15) drives the two cams (16) to rotate, and the rotation of the two cams (16) drives the test mold (6) to move upward. The compaction assembly includes a compaction plate (11) and an elastic telescopic rod. The elastic telescopic rod is slidably mounted on a support frame (8), and the compaction plate (11) is fixedly mounted at the bottom of the elastic telescopic rod. A reciprocating assembly is provided between the elastic telescopic rod and the second rotating shaft (10). When the second rotating shaft (10) rotates, the reciprocating assembly drives the elastic telescopic rod to move vertically back and forth.

2. The vibration compaction system for asphalt mixtures according to claim 1, characterized in that, The power assembly includes a first motor (7) and a transmission screw (71). A sliding groove (4) is provided on one side of the through groove (3) along its length. The transmission screw (71) is rotatably disposed in the sliding groove (4). The transmission screw (71) is threadedly connected to multiple sliders (72). The multiple sliders (72) are all slidably connected to the sliding groove (4), and the multiple sliders (72) are respectively fixedly connected to the corresponding moving frame (5). The first motor (7) is fixedly disposed on the workbench (1), and the output end of the first motor (7) is fixedly connected to the transmission screw (71).

3. The vibration compaction system for asphalt mixtures according to claim 1, characterized in that, The reciprocating assembly includes a first hinge rod (33), which is fixedly mounted on a second rotating shaft (10). A second hinge rod (34) is hinged to one end of the first hinge rod (33) away from the second rotating shaft (10), and the other end of the second hinge rod (34) is hinged to an elastic telescopic rod.

4. The vibration compaction system for asphalt mixtures according to claim 1, characterized in that, The elastic telescopic rod includes a sleeve (35), which is slidably connected to the support frame (8). A sliding rod (37) is slidably arranged inside the sleeve (35). The bottom end of the sliding rod (37) is fixedly connected to the compaction plate (11). A collar (36) is fixedly sleeved on the sleeve (35). A spring (38) is fixedly arranged between the collar (36) and the compaction plate (11).

Images