A paver and a construction process for new and old asphalt concrete pavement

Abstract

The present application relates to a paver and a construction process for new and old asphalt concrete pavements. A paver includes a head, a discharge bin and a roller, the discharge bin is connected to the head, the roller is connected to the discharge bin, a discharge port is provided at one end of the discharge bin close to the ground, two baffles are slidably provided on the discharge bin, the baffles slide along the length direction of the discharge bin, the two baffles are symmetrically arranged about the center of the discharge port, and the baffles are used to block the discharge port; a construction process for new and old asphalt concrete pavements, including the following steps: S1, pavement clearing; S2, old pavement milling; S3, new road preparation; S4, roadbed backfilling; S5, asphalt paving; the present application has the effect of increasing the application range of the paver, and in addition, the construction process of the present application has the effect of making the connection between the new and old pavements more stable.

Description

Technical Field

[0001] The present application relates to the field of pavers, and in particular to a pavers and a construction process for new and old asphalt concrete pavements. Background Art

[0002] A paver is a construction equipment mainly used for paving various materials on the base and surface layers of highways. It is a piece of equipment that is completed by the cooperation of various systems.

[0003] The invention application with announcement number CN108487008B discloses a road paving machine, including a discharge bin, a baffle, a fixed plate and a steel roller. Asphalt is poured into the discharge bin and discharged from the discharge port on the lower surface of the discharge bin. The amount of paving and the thickness of the road surface are controlled by the baffle, the road surface is scraped flat by the fixed plate, and the road surface is rolled by the steel roller.

[0004] With respect to the above-mentioned related technologies, the inventors believe that the baffle can control the amount of paving and the thickness of the road surface but cannot control the width of the paving surface. Therefore, the paver has the defect of being greatly limited in its scope of use. Summary of the invention

[0005] In order to expand the application scope of the paver, the present application provides a paver and a construction process for new and old asphalt concrete pavements.

[0006] In a first aspect, the present application provides a paver, which adopts the following technical solution:

[0007] A paving machine comprises a vehicle head, a discharge bin and a roller, wherein the discharge bin is connected to the vehicle head, the roller is connected to the discharge bin, a discharge port is arranged at one end of the discharge bin close to the ground, two baffles are slidably arranged on the discharge bin, the baffles slide along the length direction of the discharge bin, the two baffles are symmetrically arranged about the center of the discharge port, the baffles are used to block the discharge port, a synchronizing component is arranged on the discharge bin, and the synchronizing component is used to drive the two baffles to slide synchronously toward or away from the center of the discharge port.

[0008] By adopting the above technical solution, the size of the discharge port can be controlled by setting the baffle, that is, the width of the asphalt paving is controlled, so that the paver can be adapted to paving roads of different widths, and the paver has a wide range of use. By setting the synchronous parts, the two baffles can be driven to slide synchronously toward or away from the center of the discharge port, thereby controlling the size of the discharge port so that the asphalt always flows out from the center section of the discharge port; the synchronous parts can also improve the efficiency of the baffle sliding.

[0009] Optionally, the synchronous component includes a bidirectional screw, a first driving component, a sliding block and a connecting rod, the first driving component is arranged on the discharge bin, the bidirectional screw is rotatably connected to the discharge bin, the first driving component is connected to the bidirectional screw, the central axis of the bidirectional screw is arranged parallel to the length direction of the discharge bin, the bidirectional screw rotates around its own axis, a accommodating groove is provided on the top of the discharge bin, the accommodating groove is used to accommodate the bidirectional screw, the two sliding blocks are threadedly connected to the bidirectional screw, one sliding block is threadedly connected to the left-handed thread of the bidirectional screw, and the other sliding block is threadedly connected to the right-handed thread of the bidirectional screw, the outer surfaces of the two sliding blocks are both in contact with the inner wall of the accommodating groove, the tops of the two sliding blocks are fixedly connected with a slide plate, one end of the connecting rod is fixedly connected to the slide plate, and the other end of the connecting rod is fixedly connected to the baffle.

[0010] By adopting the above technical solution, when it is necessary to drive the baffle to slide, the first driving member drives the bidirectional screw to rotate. Since the threads at both ends of the bidirectional screw are left-handed and right-handed respectively, the sliding block connected to the bidirectional screw can be driven to slide toward or away from the center of the discharge port synchronously, and the sliding block synchronously drives the slide plate and the connecting rod to slide. Since the end of the connecting rod away from the slide plate is fixedly connected to the baffle, the connecting rod can drive the baffle to slide toward or away from the center of the discharge port synchronously, thereby realizing the baffle's control over the size of the discharge port.

[0011] Optionally, a plurality of first slide grooves are provided on the top surface of the discharge bin, and the plurality of first slide grooves are arranged parallel to the length direction of the discharge bin; a first connecting block is fixedly connected to the slide plate, and the first slide groove is used for sliding connection of the first connecting block; a second connecting block is fixedly provided on the baffle plate, and a second slide groove is provided on the side wall of the discharge bin, and the second slide groove is opened parallel to the length direction of the discharge bin, and the second slide groove is used for sliding connection of the second connecting block.

[0012] By adopting the above technical solution, when the sliding block slides along the bidirectional screw, the first connecting block is always located in the first sliding groove, and the sliding path of the sliding block is fixed through the cooperation of the first sliding groove and the first connecting block; when the sliding block drives the sliding plate and the connecting rod to slide synchronously, the positional relationship between the first connecting block and the first sliding groove is fixed, so that the second connecting block on the baffle is always located in the second sliding groove, which limits the horizontal and vertical displacement of the baffle, fixes the sliding path of the baffle, and allows the baffle to stably slide on the discharge bin to control the size of the discharge port.

[0013] Optionally, a blocking block is provided on the bidirectional screw, and the blocking block is located at the center of the bidirectional screw. The blocking block is used to separate the left-handed thread and the right-handed thread of the bidirectional screw.

[0014] By adopting the above technical solution and setting the blocking block, the horizontal displacement of the sliding block is limited, the possibility of collision between the two sliding blocks when they slide synchronously toward the center of the discharge bin is reduced, and the service life of the sliding block is extended.

[0015] Optionally, a vibration mechanism is provided on the discharge bin, and the vibration mechanism includes an eccentric wheel, a vibration wheel and a connecting piece, the eccentric wheel is rotatably connected to the inner wall of the discharge bin, a second driving piece is provided on the discharge bin, the second driving piece is used to drive the eccentric wheel to rotate, and the connecting piece is used to connect the eccentric wheel and the vibration wheel.

[0016] By adopting the above technical solution and setting the connecting piece, the eccentric wheel can drive the vibrating wheel to perform eccentric movement, that is, the vibrating wheel can stir and vibrate the asphalt to make the asphalt mixed more fully.

[0017] Optionally, the connecting member includes a ball joint and a third connecting block, the ball joint is arranged on the eccentric wheel, the third connecting block is arranged on the ball joint, the end of the third connecting block away from the ball joint is fixedly connected to a sliding rod, a fixed frame is fixedly arranged on the discharge bin, the sliding rod passes through the fixed frame, the sliding rod is slidably connected to the fixed frame, the sliding direction of the sliding rod is perpendicular to the rotation direction of the eccentric wheel, and the end of the sliding rod away from the fixed frame is fixedly connected to the vibration wheel.

[0018] By adopting the above technical solution and setting up the fixed frame, the fixed frame can provide stable support for the vibrating wheel; by driving the eccentric wheel to rotate, the eccentric wheel drives the ball joint to rotate, and the third connecting block rotates synchronously with the ball joint; due to the limiting effect of the fixed frame on the sliding rod, the sliding rod slides on the fixed frame, and the sliding rod drives the vibrating wheel to slide in the horizontal direction, and the vibrating wheel tamps the asphalt concrete to make the asphalt mixed more fully.

[0019] Optionally, the second driving member includes a first gear and a second gear, the first gear is coaxially connected to the roller, the second gear is rotatably arranged on the side wall of the discharge bin, the second gear is connected to the eccentric wheel, and the first gear and the second gear are connected by a belt drive.

[0020] By adopting the above technical solution, the first gear is driven to rotate by the rotation of the roller, and the first gear drives the second gear to rotate through the belt drive, thereby causing the vibration wheel to vibrate. The vibration wheel can complete the vibration without electric drive, thereby reducing energy loss.

[0021] Optionally, a covering box is provided on the inner wall of the discharge bin, and the covering box is covered on the eccentric wheel, the ball joint and the third connecting block. A through hole is opened on the covering box, and the sliding rod extends through the through hole to the outside of the covering box.

[0022] By adopting the above technical solution and setting up a cover box, the asphalt is blocked outside the cover box, thereby reducing the possibility that the eccentric wheel, the ball joint and the third connecting block cannot continue to work due to the adhesion of asphalt.

[0023] Optionally, a conical scraper is provided on the outer side wall of the cover box, the conical scraper is sleeved on the sliding rod, and the busbar of the conical hanging plate is arranged at one end away from the cover box and close to the sliding rod.

[0024] By adopting the above technical solution and setting the conical scraper, when the sliding rod slides toward the cover box, the conical scraper can scrape off the asphalt on the sliding rod, thereby reducing the possibility of the asphalt on the sliding rod clogging the through hole.

[0025] In the second aspect, the present application provides a construction process for new and old asphalt concrete pavements, using the following technical solutions:

[0026] A construction process for new and old asphalt concrete pavement, using the above-mentioned paver, comprises the following steps:

[0027] S1. Road surface clearing: remove the shoulders, slope grass, tree roots, humus and other debris and loose roadbed fillers of the old and new roads to complete the clearing of the old and new roads;

[0028] S2, milling of old road surface: milling the old road surface into a step surface;

[0029] S3. Preparation of new road: dig a road trench on the new road, loosen the road trench, fill it with lime soil and roll it to form a lime soil layer, the upper surface of which is flush with the step surface of the old road;

[0030] S4, roadbed backfill: geogrids are laid on the gray soil layer and the old road step surface, and a mixture of crushed stone and cement is filled into the road trough and the old road step surface. After drying, a cement layer is formed, and the upper surface of the cement layer is flush with the old road surface;

[0031] S5. Asphalt paving: Fiber-broken grids are laid on the surface of the old road and on the cement layer above the steps of the old road. Asphalt concrete is laid with a paver and compacted by rolling. After curing and drying, a new and old asphalt concrete pavement is obtained.

[0032] By adopting the above technical solution and setting the step surface, an overlap surface is created between the new road and the old road, and the connection between the new and old road surfaces is more stable.

[0033] In summary, the present application includes at least one of the following beneficial technical effects:

[0034] 1. The size of the discharge port can be controlled by setting the baffle, that is, the width of the asphalt paving can be controlled, so that the paver can be adapted to paving roads of different widths, and the paver has a wider range of use;

[0035] 2. The bidirectional screw can drive the sliding block and the connecting rod to slide synchronously toward or away from the center of the discharge port. Since the end of the connecting rod away from the slide plate is fixedly connected to the baffle, the connecting rod can drive the baffle to slide synchronously toward or away from the center of the discharge port, thereby realizing the control of the size of the discharge port by the baffle;

[0036] 3. By setting up the step surface, there is an overlap surface between the new road and the old road, making the connection between the new and old road surfaces more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is an overall schematic diagram of the paver in the embodiment of the present application.

[0038] Figure 2 Schematic diagram showing a baffle in an embodiment of the present application.

[0039] Figure 3 Schematic diagram showing a bidirectional screw in an embodiment of the present application.

[0040] Figure 4 yes Figure 3 Enlarged schematic diagram of part A.

[0041] Figure 5 It is a schematic diagram showing the vibration mechanism in the embodiment of the present application.

[0042] Figure 6 It is a schematic diagram showing a ball joint in an embodiment of the present application.

[0043] Figure 7 It is a schematic diagram showing the overlapping road surface in the embodiment of the present application.

[0044] Explanation of the reference numerals in the accompanying drawings: 1. front of the vehicle; 2. discharge bin; 3. roller; 4. roller; 5. discharge port; 6. baffle; 7. bidirectional screw; 8. blocking block; 9. first driving member; 10. accommodating groove; 11. sliding block; 12. sliding plate; 13. connecting rod; 14. first slide groove; 15. first connecting block; 16. second connecting block; 17. second slide groove; 18. eccentric wheel; 19. vibrating wheel; 20. cover box; 21. conical scraper; 22. first gear; 23. conveyor belt; 24. second gear; 25. ball joint; 26. third connecting block; 27. sliding rod; 28. fixing frame; 29. ​​through hole; 30. step surface; 31. ash soil layer; 32. geogrid; 33. cement layer; 34. fiber breaking grid; 35. asphalt concrete pavement. DETAILED DESCRIPTION

[0045] The following is combined with Figure 1-7 This application is described in further detail.

[0046] The present application embodiment discloses a paving machine. Figure 1 and Figure 2 A paving machine includes a headstock 1, a discharge bin 2 and a roller 3 connected in sequence. The discharge bin 2 is hinged to the headstock 1, and the roller 3 is hinged to the discharge bin 2. A roller 4 is fixedly arranged at the lower end of the discharge bin 2. When the headstock 1 moves, the headstock 1 synchronously drives the discharge bin 2 and the roller 3 to move. A discharge port 5 is provided at one end of the discharge bin 2 close to the ground. Two baffles 6 are slidably arranged on the discharge bin 2. The two baffles 6 slide along the length direction of the discharge bin 2. The two baffles 6 are used to block the discharge port 5. The two baffles 6 are symmetrically arranged about the center of the discharge port 5. After the asphalt flows out from the discharge port 5, the roller 3 can roll the asphalt. When the paver needs to pave a wider road surface, the two baffles 6 slide away from the center of the discharge port 5. When the paver needs to pave a narrower road surface, the two baffles 6 slide toward the center of the discharge port 5. That is, the paver can control the width of the asphalt paving by adjusting the baffles 6, thereby broadening the application range of the paver.

[0047] Reference Figure 3 and Figure 4 A bidirectional screw 7 is rotatably arranged on the discharge bin 2, and the threads at both ends of the bidirectional screw 7 are left-handed threads and right-handed threads respectively. The central axis of the bidirectional screw 7 is arranged parallel to the length direction of the discharge bin 2, and the bidirectional screw 7 rotates around its own axis. A blocking block 8 is fixedly arranged on the bidirectional screw 7, and the blocking block 8 is located at the center of the bidirectional screw 7. The blocking block 8 separates the left-handed threads from the right-handed threads on the bidirectional screw 7. A first driving member 9 is fixedly arranged on the discharge bin 2. In the embodiment of the present application, the first driving member 9 is a motor, which is fixedly arranged on the side wall of the discharge bin 2, and the output end of the motor is fixedly connected to the bidirectional screw 7, and the motor is used to drive the bidirectional screw 7 to rotate. A receiving groove 10 is provided on the top wall of the discharge bin 2, and the receiving groove 10 is used to accommodate the bidirectional screw 7. Two sliding blocks 11 are threadedly connected to the bidirectional screw 7, one of the sliding blocks 11 is threadedly connected to the left-handed thread of the bidirectional screw 7, and the other sliding block 11 is threadedly connected to the right-handed thread on the bidirectional screw 7. The two sliding blocks 11 are separated by a blocking block 8, and the outer surfaces of the two sliding blocks 11 are both in contact with the inner wall of the receiving groove 10.

[0048] By starting the motor, the motor drives the bidirectional screw 7 to rotate. Since the threads at both ends of the bidirectional screw 7 are left-handed and right-handed respectively, the sliding blocks 11 located at both ends of the blocking block 8 can slide synchronously toward or away from the center of the discharge bin 2. The setting of the blocking block 8 limits the horizontal displacement of the sliding block 11, reduces the possibility of collision when the two sliding blocks 11 slide synchronously toward the center of the discharge bin 2, and extends the service life of the sliding block 11.

[0049] Reference Figure 4A slide plate 12 is integrally formed on the slide block 11, and a connecting rod 13 is fixedly connected to the slide plate 12. The end of the connecting rod 13 away from the slide plate 12 is welded to the baffle 6. When the slide block 11 slides, the slide block 11 can drive the slide plate 12 and the connecting rod 13 to slide synchronously, and the connecting rod 13 can drive the baffle 6 to slide synchronously toward or away from the center of the discharge bin 2, thereby realizing the control of the baffle 6 on the size of the discharge port 5.

[0050] Reference Figure 3 and Figure 4 , a plurality of first chutes 14 are also provided on the top wall of the discharge bin 2. In the embodiment of the present application, there are two first chutes 14, which are respectively located on both sides of the accommodating groove 10, and the two first chutes 14 are arranged parallel to the accommodating groove 10; a first connecting block 15 is integrally formed on the slide plate 12. In the embodiment of the present application, there are four first connecting blocks 15, which are grouped in pairs, and the two first connecting blocks 15 in the same group are arranged on the same slide plate 12, and the two first connecting blocks 15 in the same group are symmetrically arranged with respect to the length direction of the first chute 14, and the side wall and the lower bottom surface of the first connecting block 15 are in contact with the inner wall of the first chute 14.

[0051] When the sliding block 11 slides along the bidirectional screw 7, the first connecting block 15 is always located in the first sliding groove 14. The first sliding groove 14 and the first connecting block 15 cooperate to fix the sliding path of the sliding block 11, so that the sliding block 11 always slides along the length direction of the discharge bin 2, that is, the slide plate 12 and the connecting rod 13 always slide along the length direction of the discharge bin 2.

[0052] Reference Figure 2 A second connecting block 16 is integrally formed on the baffle 6, and the second connecting block 16 is arranged in the length direction of the baffle 6. The second connecting block 16 is arranged in a T-shape. A second slide groove 17 is opened on the side wall of the discharge bin 2, and the second slide groove 17 is arranged parallel to the length direction of the discharge bin 2. The second slide groove 17 is used for the second connecting block 16 to slide and connect.

[0053] Since the second connecting block 16 is slidably connected to the second sliding groove 17, the horizontal and vertical displacements of the baffle 6 are limited, that is, the sliding path of the baffle 6 is fixed, so that the baffle 6 can stably slide along the length direction of the discharge bin 2, thereby controlling the size of the discharge port 5.

[0054] Reference Figure 5 A vibration mechanism is provided in the discharge bin 2. In the embodiment of the present application, there are two vibration mechanisms, and the two vibration mechanisms are symmetrically arranged about the center of the discharge bin 2.

[0055] Reference Figure 5 and Figure 6The vibration mechanism includes an eccentric wheel 18, a vibration wheel 19, a second driving member, and a connecting member, and the connecting member is used to connect the eccentric wheel 18 and the vibration wheel 19. A cover box 20 is fixedly arranged on the inner wall of the discharge bin 2, and the cover box 20 is arranged to cover the outside of the eccentric wheel 18 and the connecting member. The cover box 20 can reduce the possibility that the connecting member cannot continue to work due to asphalt adhesion to a certain extent.

[0056] Reference Figure 2 , the eccentric wheel 18 is rotatably arranged on the inner side wall of the discharge bin 2, and the rotation center line of the eccentric wheel 18 is parallel to the length direction of the discharge bin 2. The second driving member is used to drive the eccentric wheel 18 to rotate. In the embodiment of the present application, there are two second driving members, and the two second driving members are symmetrically arranged about the center of the discharge bin 2. The second driving member includes a first gear 22, a conveyor belt 23 and a second gear 24. The second gear 24 is rotatably arranged on the outer side wall of the discharge bin 2, and the rotation center line of the second gear 24 is parallel to the length direction of the discharge bin 2. The second gear 24 is coaxially connected to the eccentric wheel 18, the first gear 22 is coaxially connected to the roller 3, and the second gear 24 is connected to the first gear 22 through the conveyor belt 23.

[0057] Reference Figure 5 and Figure 6 The connecting member includes a ball hinge joint 25 and a third connecting block 26. The ball hinge joint 25 is fixedly connected to the end of the eccentric wheel 18 away from the second gear 24. The third connecting block 26 is fixedly arranged at the end of the ball hinge joint 25 away from the eccentric wheel 18. A sliding rod 27 is fixedly connected to the third connecting block 26. The sliding rod 27 is located at the end of the third connecting block 26 away from the ball hinge joint 25. A fixing frame 28 is fixedly connected to the side wall of the discharge bin 2. The fixing frame 28 is located in the cover box 20. The sliding rod 27 is slidably connected to the fixing frame 28. The sliding rod 27 passes through the fixing frame 28. The sliding direction of the sliding rod 27 is perpendicular to the rotation direction of the eccentric wheel 18. A through hole 29 is opened on the cover box 20. The end of the sliding rod 27 away from the fixing frame 28 passes through the through hole 29 and is fixedly connected to the vibration wheel 19. The fixing frame 28 can support the sliding rod 27 and the vibration wheel 19 to a certain extent. In the embodiment of the present application, two vibration wheels 19 symmetrically arranged about the center of the discharge bin 2 are integrally formed.

[0058] When the front of the vehicle 1 is displaced, the roller 3 rotates synchronously, and the roller 3 drives the first gear 22 to rotate. The first gear 22 drives the second gear 24 to rotate through the conveyor belt 23. The second gear 24 synchronously drives the eccentric wheel 18, the ball joint 25, and the third connecting block 26 to rotate. Due to the limiting effect of the fixed frame 28 on the sliding rod 27, the sliding rod 27 slides horizontally on the fixed frame 28. The sliding rod 27 drives the vibration wheel 19 to slide in the horizontal direction. The vibration wheel 19 vibrates the asphalt to make the asphalt mixed more fully. The whole process can be completed without adding an additional power source, which reduces the energy loss to a certain extent.

[0059] Reference Figure 5 and Figure 6 A conical scraper 21 is provided on the outer wall of the cover box 20. The conical scraper 21 is arranged in a frustum shape. The conical scraper 21 is sleeved on the sliding rod 27. The small diameter end of the conical hanging plate is arranged close to the sliding rod 27. When the sliding rod 27 slides toward the cover box 20, the conical scraper 21 can scrape off the asphalt on the sliding rod 27, reducing the possibility of the asphalt on the sliding rod 27 blocking the through hole 29.

[0060] The implementation principle of a paver in an embodiment of the present application is as follows: when the paver needs to pave and roll asphalt on the road surface, the motor is started, and the motor drives the bidirectional screw 7 to rotate, and the baffle 6 is synchronously driven to slide through the cooperation of the sliding block 11, the slide plate 12 and the connecting rod 13, and the size of the discharge port 5 is controlled by the baffle 6, and the motor can be stopped when the width of the discharge port 5 is consistent with the width of the road surface to be paved; when the front of the vehicle 1 slides, the discharge bin 2 and the roller 3 move synchronously with the front of the vehicle 1, and the rotation of the roller 3 drives the vibration wheel 19 to stir the asphalt concrete in the discharge bin 2, and the stirred asphalt concrete flows out from the discharge port 5, and the asphalt concrete flowing out of the roller 3 is rolled.

[0061] Reference Figure 7 The present application embodiment discloses a construction process of a new and old asphalt concrete pavement 35, and the paver described in the present embodiment is used, comprising the following steps: S1, clearing the pavement, the average clearing depth is 20 cm, that is, removing the shoulders, slope grass, tree roots, humus and other debris and loose roadbed fillers of the old road and the new road; S2, milling the old road surface into a step surface 30; S3, digging a road groove on the new road, ensuring that the height difference between the design elevation of the roadbed top and the top surface of the excavated road groove is 20 cm, loosening the original groove by 20 cm, adding 10% lime soil and rolling and compacting it to form A lime soil layer 31, the upper surface of the lime soil layer 31 is flush with the old road step surface 30; S4, laying geogrids 32 on the lime soil layer 31 and the old road step surface 30, filling the road groove and the old road step surface 30 with a mixture of crushed stone and cement, and forming a cement layer 33 after drying, and the upper surface of the cement layer 33 is flush with the old road surface; S5, laying fiber-broken grids 34 on the old road surface and the cement layer 33 located above the old road step surface 30, using a paver to lay asphalt concrete and roll and compact, maintain, and dry to obtain a new and old asphalt concrete pavement 35.

[0062] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A paving machine, comprising a headstock (1), a discharge bin (2) and a roller (3), wherein the discharge bin (2) is connected to the headstock (1), and the roller (3) is connected to the discharge bin (2), characterized in that: A discharge port (5) is arranged at one end of the discharge bin (2) close to the ground, two baffles (6) are slidably arranged on the discharge bin (2), the baffles (6) slide along the length direction of the discharge bin (2), the two baffles (6) are symmetrically arranged about the center of the discharge port (5), the baffles (6) are used to block the discharge port (5), and a synchronous component is arranged on the discharge bin (2), the synchronous component is used to drive the two baffles (6) to slide synchronously toward or away from the center of the discharge port (5); The discharge bin (2) is provided with a vibration mechanism, the vibration mechanism comprising an eccentric wheel (18), a vibration wheel (19) and a connecting piece, the eccentric wheel (18) is rotatably connected to the inner wall of the discharge bin (2), the discharge bin (2) is provided with a second driving piece, the second driving piece is used to drive the eccentric wheel (18) to rotate, and the connecting piece is used to connect the eccentric wheel (18) and the vibration wheel (19); The connecting member comprises a ball joint (25) and a third connecting block (26), the ball joint (25) being arranged on the eccentric wheel (18), the third connecting block (26) being arranged on the ball joint (25), one end of the third connecting block (26) away from the ball joint (25) being fixedly connected with a sliding rod (27), a fixing frame (28) being fixedly arranged on the discharge bin (2), the sliding rod (27) passing through the fixing frame (28), the sliding rod (27) being slidably connected with the fixing frame (28), the sliding direction of the sliding rod (27) being perpendicular to the rotation direction of the eccentric wheel (18), and one end of the sliding rod (27) away from the fixing frame (28) being fixedly connected with the vibration wheel (19); The second driving member comprises a first gear (22) and a second gear (24), the first gear (22) being coaxially connected to the roller (3), the second gear (24) being rotatably arranged on the side wall of the discharge bin (2), the second gear (24) being connected to the eccentric wheel (18), and the first gear (22) and the second gear (24) being connected via a conveyor belt (23); A cover box (20) is arranged on the inner wall of the discharge bin (2), and the cover box (20) covers the eccentric wheel (18), the ball joint (25) and the third connecting block (26). A through hole (29) is opened on the cover box (20), and the sliding rod (27) passes through the through hole (29) and extends to the outside of the cover box (20); A conical scraper (21) is arranged on the outer wall of the cover box (20), and the conical scraper (21) is sleeved on the sliding rod (27). The end of the generatrix of the conical scraper (21) away from the cover box (20) is arranged close to the sliding rod (27).

2. A paver according to claim 1, characterized in that: The synchronous member comprises a bidirectional screw (7), a first driving member (9), a sliding block (11) and a connecting rod (13); the first driving member (9) is arranged on the discharge bin (2); the bidirectional screw (7) is rotatably connected to the discharge bin (2); the first driving member (9) is connected to the bidirectional screw (7); the central axis of the bidirectional screw (7) is arranged parallel to the length direction of the discharge bin (2); the bidirectional screw (7) rotates around its own axis; a receiving groove (10) is provided on the top of the discharge bin (2); the receiving groove (10) is used to receive the bidirectional screw ( 7), the two sliding blocks (11) are both threadedly connected to the bidirectional screw (7), one sliding block (11) is threadedly connected to the left-handed thread of the bidirectional screw (7), and the other sliding block (11) is threadedly connected to the right-handed thread of the bidirectional screw (7), the outer surfaces of the two sliding blocks (11) are both in contact with the inner wall of the accommodating groove (10), the tops of the two sliding blocks (11) are fixedly connected with a slide plate (12), one end of the connecting rod (13) is fixedly connected to the slide plate (12), and the other end of the connecting rod (13) is fixedly connected to the baffle (6).

3. A paver according to claim 2, characterized in that: A plurality of first slide grooves (14) are provided on the top surface of the discharge bin (2), and the plurality of first slide grooves (14) are arranged parallel to the length direction of the discharge bin (2); a first connecting block (15) is fixedly connected to the slide plate (12), and the first slide groove (14) is used for the first connecting block (15) to be slidably connected; a second connecting block (16) is fixedly provided on the baffle plate (6), and a second slide groove (17) is provided on the side wall of the discharge bin (2), and the second slide groove (17) is arranged parallel to the length direction of the discharge bin (2), and the second slide groove (17) is used for the second connecting block (16) to be slidably connected.

4. A paver according to claim 2, characterized in that: The bidirectional screw (7) is provided with a blocking block (8), the blocking block (8) is located at the center of the bidirectional screw (7), and the blocking block (8) is used to separate the left-handed thread and the right-handed thread of the bidirectional screw (7).

5. A construction process for new and old asphalt concrete pavement, characterized in that: The paver according to any one of claims 1 to 4 is used, comprising the following steps: S1. Road surface clearing: remove the shoulders, slope grass, tree roots, humus and other debris and loose roadbed fillers of the old and new roads to complete the clearing of the old and new roads; S2, milling the old road surface: milling the old road surface into a step surface (30); S3, preparation of new road: digging a road trench on the new road, loosening the road trench, filling it with lime soil and rolling and compacting it to form a lime soil layer (31), the upper surface of the lime soil layer (31) is flush with the step surface (30) of the old road; S4, roadbed backfill: laying geogrids (32) on the lime soil layer (31) and the old road step surface (30), filling the road groove and the old road step surface (30) with a mixture of crushed stone and cement, and forming a cement layer (33) after drying, the upper surface of the cement layer (33) being flush with the old road surface; S5, asphalt paving: laying a glass fiber grid (34) on the old road surface and the cement layer (33) located above the old road step surface (30), laying asphalt concrete with a paver and rolling and compacting, curing, and drying to obtain a new and old asphalt concrete pavement (35).

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